feat: enhance Sentry integration with dynamic loading and status reporting

.vscode/settings.json

@@ -1,8 +1,11 @@
 {
     "editor.autoIndent": "keep",
     "javascript.format.insertSpaceAfterFunctionKeywordForAnonymousFunctions": false,
-    "javascript.format.insertSpaceAfterKeywordsInControlFlowStatements": false,
+    "javascript.format.insertSpaceAfterKeywordsInControlFlowStatements": true,
     "javascript.format.insertSpaceAfterOpeningAndBeforeClosingNonemptyBraces": false,
-    "javascript.format.enable": false,
-    "liveServer.settings.port": 5502
+    "javascript.format.enable": true,
+    "liveServer.settings.port": 5502,
+    "javascript.format.insertSpaceAfterConstructor": true,
+    "javascript.format.insertSpaceBeforeFunctionParenthesis": false,
+    "javascript.format.insertSpaceAfterOpeningAndBeforeClosingEmptyBraces": false
 }

css/base.css

@@ -1,3 +1,4 @@
+/* Set some default CSS */
 html,
 body,
 div,

css/loading.css

@@ -0,0 +1,89 @@
+/* Some fancy loading CSS */
+.sk-cube-grid {
+    width: 60px;
+    height: 60px;
+}
+
+.sk-cube-grid .sk-cube {
+    width: 33%;
+    height: 33%;
+    background-color: #4527A0;
+    float: left;
+    -webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
+    animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
+}
+
+.sk-cube-grid .sk-cube1 {
+    -webkit-animation-delay: 0.2s;
+    animation-delay: 0.2s;
+}
+
+.sk-cube-grid .sk-cube2 {
+    -webkit-animation-delay: 0.3s;
+    animation-delay: 0.3s;
+}
+
+.sk-cube-grid .sk-cube3 {
+    -webkit-animation-delay: 0.4s;
+    animation-delay: 0.4s;
+}
+
+.sk-cube-grid .sk-cube4 {
+    -webkit-animation-delay: 0.1s;
+    animation-delay: 0.1s;
+}
+
+.sk-cube-grid .sk-cube5 {
+    -webkit-animation-delay: 0.2s;
+    animation-delay: 0.2s;
+}
+
+.sk-cube-grid .sk-cube6 {
+    -webkit-animation-delay: 0.3s;
+    animation-delay: 0.3s;
+}
+
+.sk-cube-grid .sk-cube7 {
+    -webkit-animation-delay: 0s;
+    animation-delay: 0s;
+}
+
+.sk-cube-grid .sk-cube8 {
+    -webkit-animation-delay: 0.1s;
+    animation-delay: 0.1s;
+}
+
+.sk-cube-grid .sk-cube9 {
+    -webkit-animation-delay: 0.2s;
+    animation-delay: 0.2s;
+}
+
+@-webkit-keyframes sk-cubeGridScaleDelay {
+
+    0%,
+    70%,
+    100% {
+        -webkit-transform: scale3D(1, 1, 1);
+        transform: scale3D(1, 1, 1);
+    }
+
+    35% {
+        -webkit-transform: scale3D(0, 0, 1);
+        transform: scale3D(0, 0, 1);
+    }
+}
+
+@keyframes sk-cubeGridScaleDelay {
+
+    0%,
+    70%,
+    100% {
+        -webkit-transform: scale3D(1, 1, 1);
+        transform: scale3D(1, 1, 1);
+    }
+
+    35% {
+        -webkit-transform: scale3D(0, 0, 1);
+        transform: scale3D(0, 0, 1);
+    }
+}

css/main.css

@@ -1,7 +1,8 @@
 @charset "UTF-8";
 @import "./base.css";
+@import "./loading.css";
 @import url("https://fonts.googleapis.com/css?family=Noto+Sans:400,700");
-/* Colourscheme from https://www.materialui.co/colors */
+/* Colourscheme from https://www.materialui.co/colors (as per original) */
 
 * {
     -webkit-font-smoothing: antialiased;
@@ -50,7 +51,7 @@ html {
 
 html,
 body,
-input:not([type=text]),
+input:not([type=text]):not([type=number]), /* TODO: check it works in safari */
 button,
 select,
 option {
@@ -72,8 +73,6 @@ textarea {
     margin: 0;
     padding: 0;
     color: black;
-    /*#1d3850;*/
-    /*font-family: 'Noto Sans', sans-serif;*/
     overflow: hidden;
 }
 
@@ -239,6 +238,7 @@ td {
     box-shadow: none;
     text-shadow: none;
     flex-shrink: 0;
+    font-size: 12px;
 }
 
 .nav-left {
@@ -272,7 +272,7 @@ td {
     border-style: dashed;
 }
 
-/*@media screen and (orientation:landscape) {*/
+/* LANDSCAPE */
 @media screen and (min-aspect-ratio:12/9) {
     .exam-content-panel {
         display: flex;
@@ -339,7 +339,7 @@ td {
     }
 }
 
-/*@media screen and (orientation:portrait) {*/
+/* PORTRAIT*/
 @media screen and (max-aspect-ratio:12/9) {
     .exam-content-panel {
         display: block;
@@ -473,6 +473,7 @@ td {
     overflow: hidden;
     resize: none;
     margin-bottom: 1.6rem;
+    border-radius: 0.3em;
 }
 
 .long-answer-marked {
@@ -498,6 +499,20 @@ td {
     box-shadow: 0 0 0 3px #4527A0;
 }
 
+/* .short-option-answer {
+    width: 100%;
+    display: block;
+    border: 1px solid #4527A0;
+    margin: 0.8rem 1.6rem 1.6rem 1.6rem;
+    overflow: hidden;
+    resize: none;
+    padding: 0.4rem;
+}
+
+.short-option-answer:focus {
+    box-shadow: 0 0 0 3px #4527A0;
+} */
+
 img {
     display: block;
     padding: 0;
@@ -548,6 +563,71 @@ img {
     text-align: center;
 }
 
+/* Finish dialog styling */
+.finish-header {
+    display: flex;
+    justify-content: center;
+    padding-top: 6vh;
+    pointer-events: none;
+}
+.login-risr-box {
+    display: inline-block;
+}
+.login-risr-logo {
+    height: 64px;
+    width: auto;
+    user-drag: none;
+}
+.finish-dialog {
+    display: inline-block;
+    background-color: #1b1b1b;
+    color: #fff;
+    margin: 3vh auto;
+    padding: 1.6rem;
+    border-radius: 8px;
+    max-width: 520px;
+    box-shadow: 0 8px 24px rgba(0,0,0,0.6);
+    text-align: left;
+}
+.logout-title {
+    font-size: 1.4rem;
+    font-weight: 700;
+    margin-bottom: 0.8rem;
+}
+.logout-error.info {
+    background-color: #e3f2fd;
+    color: #0d47a1;
+    border: 1px solid rgba(13,71,161,0.15);
+    padding: 0.8rem;
+    border-radius: 4px;
+    margin-bottom: 0.8rem;
+}
+.logout-text {
+    margin-bottom: 0.8rem;
+    color: #ddd;
+}
+.logout-buttons {
+    display: flex;
+    gap: 0.6rem;
+    justify-content: flex-end;
+}
+.logout-button {
+    padding: 0.6rem 1rem;
+    border-radius: 4px;
+    border: none;
+    cursor: pointer;
+    font-weight: 600;
+}
+.logout-button.danger {
+    background: #b71c1c;
+    color: white;
+}
+.logout-button.primary {
+    background: #1976d2;
+    color: white;
+}
+
+
 .dialog {
     /*display: inline-block;*/
     display: none;
@@ -790,6 +870,7 @@ select option:disabled {
     border-radius: 5px;
     color: #311B92;
     margin: 0 .8rem .8rem 0;
+    padding: 1rem 1.6rem;
     box-shadow: none;
     text-shadow: none;
     flex: 0 0 auto;
@@ -921,94 +1002,6 @@ select option:disabled {
     content: "⏸"
 }
 
-.sk-cube-grid {
-    width: 60px;
-    height: 60px;
-}
-
-.sk-cube-grid .sk-cube {
-    width: 33%;
-    height: 33%;
-    background-color: #4527A0;
-    float: left;
-    -webkit-animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
-    animation: sk-cubeGridScaleDelay 1.3s infinite ease-in-out;
-}
-
-.sk-cube-grid .sk-cube1 {
-    -webkit-animation-delay: 0.2s;
-    animation-delay: 0.2s;
-}
-
-.sk-cube-grid .sk-cube2 {
-    -webkit-animation-delay: 0.3s;
-    animation-delay: 0.3s;
-}
-
-.sk-cube-grid .sk-cube3 {
-    -webkit-animation-delay: 0.4s;
-    animation-delay: 0.4s;
-}
-
-.sk-cube-grid .sk-cube4 {
-    -webkit-animation-delay: 0.1s;
-    animation-delay: 0.1s;
-}
-
-.sk-cube-grid .sk-cube5 {
-    -webkit-animation-delay: 0.2s;
-    animation-delay: 0.2s;
-}
-
-.sk-cube-grid .sk-cube6 {
-    -webkit-animation-delay: 0.3s;
-    animation-delay: 0.3s;
-}
-
-.sk-cube-grid .sk-cube7 {
-    -webkit-animation-delay: 0s;
-    animation-delay: 0s;
-}
-
-.sk-cube-grid .sk-cube8 {
-    -webkit-animation-delay: 0.1s;
-    animation-delay: 0.1s;
-}
-
-.sk-cube-grid .sk-cube9 {
-    -webkit-animation-delay: 0.2s;
-    animation-delay: 0.2s;
-}
-
-@-webkit-keyframes sk-cubeGridScaleDelay {
-
-    0%,
-    70%,
-    100% {
-        -webkit-transform: scale3D(1, 1, 1);
-        transform: scale3D(1, 1, 1);
-    }
-
-    35% {
-        -webkit-transform: scale3D(0, 0, 1);
-        transform: scale3D(0, 0, 1);
-    }
-}
-
-@keyframes sk-cubeGridScaleDelay {
-
-    0%,
-    70%,
-    100% {
-        -webkit-transform: scale3D(1, 1, 1);
-        transform: scale3D(1, 1, 1);
-    }
-
-    35% {
-        -webkit-transform: scale3D(0, 0, 1);
-        transform: scale3D(0, 0, 1);
-    }
-}
 
 
 .displayblock {
@@ -1145,7 +1138,7 @@ select option:disabled {
     }
 }
 
-#submit-error-overlay {
+#view-answers-overlay {
     opacity: 0.9;
     position: absolute;
     top: 0;
@@ -1158,6 +1151,78 @@ select option:disabled {
     z-index: 5000;
 }
 
+#submit-error-overlay {
+    position: fixed;
+    top: 0;
+    left: 0;
+    width: 100%;
+    height: 100%;
+    background-color: rgba(0, 0, 0, 0.85);
+    display: flex;
+    justify-content: center;
+    align-items: center;
+    z-index: 10000;
+    user-select: text;
+    -moz-user-select: text;
+    -webkit-user-select: text;
+    overflow-y: auto;
+    padding: 20px;
+    box-sizing: border-box;
+}
+
+#submit-error-overlay .error-card {
+    background-color: #1a1a1a;
+    border: 1px solid #c62828;
+    border-radius: 8px;
+    max-width: 600px;
+    width: 100%;
+    padding: 25px;
+    box-shadow: 0 10px 25px rgba(0,0,0,0.5);
+    color: #eee;
+    font-family: sans-serif;
+}
+
+#submit-error-overlay .error-card h3 {
+    margin-top: 0;
+    color: #ef5350;
+    font-size: 20px;
+    border-bottom: 1px solid #333;
+    padding-bottom: 10px;
+    margin-bottom: 15px;
+}
+
+#submit-error-overlay .error-card button {
+    cursor: pointer;
+    background-color: #311B92;
+    color: white;
+    border: none;
+    padding: 10px 18px;
+    font-size: 14px;
+    border-radius: 4px;
+    transition: background-color 0.2s;
+    font-weight: bold;
+}
+
+#submit-error-overlay .error-card button:hover {
+    background-color: #4527A0;
+}
+
+#submit-error-overlay .error-card button.btn-secondary {
+    background-color: #444;
+}
+
+#submit-error-overlay .error-card button.btn-secondary:hover {
+    background-color: #555;
+}
+
+#submit-error-overlay .error-card button.btn-danger {
+    background-color: #c62828;
+}
+
+#submit-error-overlay .error-card button.btn-danger:hover {
+    background-color: #d32f2f;
+}
+
 .cache-out-of-date {
     color: red;
 }
@@ -1187,12 +1252,26 @@ select option:disabled {
 .invalid-login {
     color: red;
 }
-
-input[type="number"] {
+.invalid-login::before {
+    content: "Invalid login";
+    color: red;
+    font-size: 1rem;
+    font-weight: 900;
+    border: 0.25rem solid red;
+    display: inline-block;
+    text-transform: uppercase;
+    border-radius: 1rem;
+    font-family: 'Courier';
+    opacity: 80%;
+    margin-top: 3em;
+    padding: 0.25rem 1rem;
+    position: absolute;
+} 
+/* input[type="number"] {
     user-select: text;
     -moz-user-select: text;
     -webkit-user-select: text;
-}
+} */
 
 .feedback-image {
     max-width: 100%;
@@ -1205,3 +1284,286 @@ input[type="button"], button {
 .login-button {
     cursor: pointer;
 }
+
+h2:has(+ #exam-list:empty),  h2:has(+ #packet-list:empty){
+    opacity: 30%;
+}
+
+#exam-list:empty::after,  #packet-list:empty::after{
+    content: "None available.";
+    opacity: 30%;
+}
+
+#viewer-title-bar {
+    display: flex;
+    flex-direction: row;
+    justify-content: space-between;
+    align-items: center;
+    padding: 0.8rem 1.6rem;
+    background-color: gray;
+    color: white;
+}
+
+.title-bar-button {
+    display: inline-flex;
+    flex-direction: column;
+    align-items: center;
+    border: none;
+    margin: 0 0 0 2px;
+    background-color: gray;
+    color: white;
+    border-left: 1px solid white;
+}
+
+.viewer-icon {
+    margin: auto;
+}
+
+.title-bar-button:hover {
+    background-color: darkgray;
+}
+
+/* Sync Status Styles */
+#sync-status {
+    display: flex;
+    align-items: center;
+    gap: 0.5rem;
+    font-size: 0.85rem;
+    font-weight: 500;
+    color: rgba(255, 255, 255, 0.85);
+    margin: auto 0.8rem;
+    padding: 0.3rem 0.6rem;
+    border-radius: 4px;
+    background-color: rgba(255, 255, 255, 0.05);
+    transition: background-color 0.3s ease;
+}
+
+.sync-dot {
+    width: 8px;
+    height: 8px;
+    border-radius: 50%;
+    display: inline-block;
+}
+
+.sync-dot.saved {
+    background-color: #4CAF50;
+    box-shadow: 0 0 8px #4CAF50;
+}
+
+.sync-dot.syncing {
+    background-color: #FFC107;
+    box-shadow: 0 0 8px #FFC107;
+    animation: pulse-syncing 1.2s infinite ease-in-out;
+}
+
+.sync-dot.failed {
+    background-color: #F44336;
+    box-shadow: 0 0 8px #F44336;
+    animation: pulse-failed 1s infinite alternate;
+}
+
+.sync-dot.practice {
+    background-color: #2196F3;
+    box-shadow: 0 0 8px #2196F3;
+}
+
+.sync-text {
+    letter-spacing: 0.2px;
+}
+
+@keyframes pulse-syncing {
+    0% {
+        transform: scale(0.85);
+        opacity: 0.6;
+    }
+    50% {
+        transform: scale(1.15);
+        opacity: 1;
+    }
+    100% {
+        transform: scale(0.85);
+        opacity: 0.6;
+    }
+}
+
+@keyframes pulse-failed {
+    from {
+        box-shadow: 0 0 4px #F44336;
+    }
+    to {
+        box-shadow: 0 0 12px #F44336;
+    }
+}
+
+.refresh-button {
+    background-color: transparent;
+    border: 1px solid #555;
+    border-radius: 3px;
+    color: #bbb;
+    padding: 1px 6px;
+    font-size: 10px;
+    cursor: pointer;
+    margin-left: 10px;
+    vertical-align: middle;
+    transition: all 0.2s;
+}
+
+.refresh-button:hover {
+    background-color: #333;
+    border-color: #888;
+    color: #fff;
+}
+
+.global-refresh-container {
+    margin-bottom: 20px;
+    display: flex;
+    align-items: center;
+    gap: 15px;
+}
+
+.exit-exam-mode {
+    position: fixed;
+    bottom: 20px;
+    right: 20px;
+    background-color: #b71c1c;
+    color: white;
+    border: none;
+    padding: 10px 15px;
+    border-radius: 5px;
+    cursor: pointer;
+    z-index: 10000;
+}
+
+/* Options and Cache Tidy Up */
+.options-details, .cache-details-box {
+    background: #181818;
+    border: 1px solid #333;
+    border-radius: 6px;
+    margin-bottom: 15px;
+    padding: 12px 18px;
+    font-family: sans-serif;
+}
+
+.options-details summary, .cache-details-box summary {
+    font-weight: bold;
+    cursor: pointer;
+    font-size: 15px;
+    outline: none;
+    color: #e0e0e0;
+}
+
+.options-details summary:hover, .cache-details-box summary:hover {
+    color: #fff;
+}
+
+.options-details[open], .cache-details-box[open] {
+    border-color: #444;
+}
+
+.options-details[open] summary, .cache-details-box[open] summary {
+    border-bottom: 1px solid #333;
+    padding-bottom: 8px;
+    margin-bottom: 12px;
+}
+
+.database-btn-group {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 10px;
+    margin-bottom: 15px;
+}
+
+.database-btn-group input[type="button"] {
+    background: #2a2a2a;
+    color: #eee;
+    border: 1px solid #444;
+    padding: 8px 14px;
+    border-radius: 4px;
+    cursor: pointer;
+    font-size: 12px;
+    font-weight: bold;
+    transition: background-color 0.2s, border-color 0.2s;
+}
+
+.database-btn-group input[type="button"]:hover {
+    background: #3a3a3a;
+    border-color: #666;
+}
+
+.database-btn-group input#btn-delete-answer-databases {
+    background: #5f0909;
+    border-color: #8c0d0d;
+    color: #ffcdd2;
+}
+
+.database-btn-group input#btn-delete-answer-databases:hover {
+    background: #8c0d0d;
+    border-color: #b71c1c;
+}
+
+.database-btn-group input#btn-reset-local {
+    background: #5d2e00;
+    border-color: #8c4600;
+    color: #ffe0b2;
+}
+
+.database-btn-group input#btn-reset-local:hover {
+    background: #8c4600;
+    border-color: #e65100;
+}
+
+.local-loader-field {
+    border: 1px solid #333;
+    padding: 15px;
+    border-radius: 6px;
+    background: #111;
+    margin-bottom: 15px;
+}
+
+.local-loader-field h2 {
+    margin-top: 0;
+    font-size: 14px;
+    color: #ccc;
+    margin-bottom: 10px;
+}
+
+.local-loader-field input[type="file"] {
+    background: #222;
+    border: 1px solid #333;
+    color: #eee;
+    padding: 4px;
+    border-radius: 4px;
+    font-size: 12px;
+}
+
+.local-loader-field input[type="button"] {
+    background: #311B92;
+    color: #fff;
+    border: none;
+    padding: 6px 12px;
+    border-radius: 4px;
+    font-weight: bold;
+    cursor: pointer;
+    font-size: 12px;
+    margin-left: 5px;
+}
+
+.local-loader-field input[type="button"]:hover {
+    background: #4527A0;
+}
+
+.view-answers-btn {
+    background: #2e7d32;
+    color: white;
+    border: none;
+    padding: 10px 16px;
+    border-radius: 4px;
+    font-size: 13px;
+    font-weight: bold;
+    cursor: pointer;
+    transition: background-color 0.2s;
+}
+
+.view-answers-btn:hover {
+    background: #388e3c;
+}

index.html

@@ -1,15 +1,24 @@
-<!DOCTYPE html>
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" class="no-touch" lang="en">
-
+<!doctype html>
+<html
+  xmlns="http://www.w3.org/1999/xhtml"
+  xml:lang="en"
+  class="no-touch"
+  lang="en"
+>
   <head>
-    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
-    <meta charset="UTF-8">
-    <meta name="viewport"
-        content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no">
-    <meta name="viewport" content="initial-scale=1.0, maximum-scale=1.0, width=device-width, height=device-height">
-    <link type="text/css" rel="stylesheet" href="lib/jquery.modal.min.css">
-    <link type="text/css" rel="stylesheet" href="lib/cornerstone.min.css">
-    <link type="text/css" rel="stylesheet" href="css/main.css">
+    <meta http-equiv="content-type" content="text/html; charset=UTF-8" />
+    <meta charset="UTF-8" />
+    <meta
+      name="viewport"
+      content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"
+    />
+    <meta
+      name="viewport"
+      content="initial-scale=1.0, maximum-scale=1.0, width=device-width, height=device-height"
+    />
+    <link type="text/css" rel="stylesheet" href="lib/jquery.modal.min.css" />
+    <link type="text/css" rel="stylesheet" href="lib/cornerstone.min.css" />
+    <link type="text/css" rel="stylesheet" href="css/main.css" />
     <title>RTS</title>
   </head>
 
@@ -17,98 +26,257 @@
     <div id="content">
       <div class="content-panel">
         <div class="nav-bar">
-                <button id="review-button" class="navigation nav-right"><b>☰</b></button>
-                <button id="nav-submit-button" class="submit-button navigation nav-right"><b>submit</b></button>
-                <!--<button id="options-button" class="navigation nav-right"
-                    title="click to load new packet or manage saved answers">options</button>-->
-                <button id="review-overlay-button" class="navigation nav-right"
-                    title="click to finish exam and review answers">review</button>
-                <button id="fullscreen-overlay-button" class="navigation nav-right"
-                    title="click to toggle fullscreen">fullscreen</button>
-                <!--<button id="logout-button" class="navigation nav-right">logout</button>-->
+          <button id="btn-review" class="navigation nav-right">
+            <b>☰</b><br />OVERVIEW
+          </button>
+          <button
+            id="btn-submit-nav"
+            class="submit-button navigation nav-right"
+          >
+            <b>FINISH</b>
+          </button>
+          <button
+            id="btn-review-overlay"
+            class="navigation nav-right"
+            title="click to finish exam and review answers"
+          >
+            REVIEW
+          </button>
+          <button
+            id="btn-fullscreen-overlay"
+            class="navigation nav-right"
+            title="click to toggle fullscreen"
+          >
+            FULLSCREEN
+          </button>
           <div class="app-name nav-left">RTS</div>
+          <div id="sync-status" class="nav-left"></div>
           <div id="timer" title="click to pause"></div>
           <div class="exam-name" title="currently loaded packet"></div>
-                <input type="button" class="navigation nav-left" value="previous" disabled="disabled">
-                <input type="button" class="navigation nav-left" value="next">
+          <button
+            class="navigation nav-left"
+            disabled="disabled"
+            data-nav="previous"
+          >
+            <svg
+              xmlns="http://www.w3.org/2000/svg"
+              width="16"
+              height="16"
+              fill="currentColor"
+              class="bi bi-arrow-left-short"
+              viewBox="0 0 16 16"
+            >
+              <path
+                fill-rule="evenodd"
+                d="M12 8a.5.5 0 0 1-.5.5H5.707l2.147 2.146a.5.5 0 0 1-.708.708l-3-3a.5.5 0 0 1 0-.708l3-3a.5.5 0 1 1 .708.708L5.707 7.5H11.5a.5.5 0 0 1 .5.5"
+              />
+            </svg>
+            <br />
+            <span>PREVIOUS</span>
+          </button>
+          <button class="navigation nav-left" data-nav="next">
+            <svg
+              xmlns="http://www.w3.org/2000/svg"
+              width="16"
+              height="16"
+              fill="currentColor"
+              class="bi bi-arrow-right-short"
+              viewBox="0 0 16 16"
+            >
+              <path
+                fill-rule="evenodd"
+                d="M4 8a.5.5 0 0 1 .5-.5h5.793L8.146 5.354a.5.5 0 1 1 .708-.708l3 3a.5.5 0 0 1 0 .708l-3 3a.5.5 0 0 1-.708-.708L10.293 8.5H4.5A.5.5 0 0 1 4 8"
+              />
+            </svg>
+            <br />
+            <span>NEXT</span>
+          </button>
         </div>
         <div class="main-panel">
-                <div class="question-list-panel" style="display: block;">
-                </div>
+          <div class="question-list-panel" style="display: block"></div>
           <div class="exam-panel">
             <div class="exam-content-panel">
               <div class="question">
-                            <div class="title"><span style="font-weight:700;">1</span> </div>
+                <div class="title"><span style="font-weight: 700">1</span></div>
                 <div class="stem">
                   <div id="thumbnails"></div>
                 </div>
-                            <div class="thumbs">
-                            </div>
+                <div class="thumbs"></div>
               </div>
               <div class="answers">
                 <div class="answer-title">Answer</div>
-                            <div class="answer-panel">
+                <div class="answer-panel"></div>
               </div>
             </div>
           </div>
         </div>
+        <div
+          class="logout-background"
+          role="dialog"
+          aria-modal="true"
+          aria-labelledby="finish-title"
+        >
+          <div class="finish-header">
+            <div class="login-risr-box">
+              <img
+                class="login-risr-logo"
+                draggable="false"
+                alt="Logo"
+                src="risr-assess-on-dark.png"
+              />
+            </div>
+          </div>
+          <div class="logout-panel finish-dialog" id="finish-dialog-panel">
+            <div class="logout-title" id="finish-title">Ready to finish?</div>
+            <div class="logout-error info">
+              <p>
+                <strong
+                  >Answers are submitted automatically. You can complete the
+                  exam by clicking below.</strong
+                >
+              </p>
+              <p class="unanswered-line">
+                You have <span id="unanswered-count">0</span> unanswered
+                questions
+              </p>
+            </div>
+            <div class="logout-text">
+              Click “Submit exam” before closing the tab or window
+            </div>
+            <div class="logout-buttons">
+              <button class="logout-button danger" id="button-logout">
+                Submit exam
+              </button>
+              <button class="logout-button primary" id="button-continue">
+                Continue exam
+              </button>
             </div>
-            <div class="logout-background">
-                <div class="logout-panel">
-                    <div class="logout-title">Ready to logout?</div>
-                    <div class="logout-text"></div>
-                    <button class="navigation logout-cancel">continue exam</button>
-                    <button class="navigation logout-okay">logout now</button>
           </div>
         </div>
         <div id="options-panel" class="fullscreen-overlay">
           <h1>RTS</h1>
-                <input type='button' id='btn-candidate-login' class="login-button" value='Enter candidate details' onclick='void(0)' ><span
-                    id="candidate-details"></span>
-                <input type='button' id='btn-user-login' class="login-button" value='User log in'>
+          <span id="user-details">
+            <span id="candidate-info">
+              <span id="candidate-details"></span>
+            </span>
+            <span id="user-actions">
+              <input
+                type="button"
+                id="btn-candidate-login"
+                class="login-button"
+                value="Enter candidate details"
+                onclick="void 0"
+              />
+              <input
+                type="button"
+                id="btn-user-login"
+                class="login-button"
+                value="User log in"
+              />
+            </span>
             <!-- <a href="#" id="overlay-close" class="close"></a> -->
             <div id="user" class="user-text"></div>
+          </span>
           <div id="packets">
-                    <p>Click buttons below to load an exam / packet</p>
+            <div class="global-refresh-container">
+              <span id="load-exam-packet-instructions">
+                <span>Click buttons below to load an exam / packet</span>
+              </span>
+              <button
+                id="btn-refresh-all"
+                class="refresh-button"
+                title="Refresh all exams and packets"
+              >
+                Refresh All
+              </button>
+            </div>
             <span class="exam-wrapper">
-                        <h2>Available Exams:</h2>
-                        <span id="exam-list">
-
-                        </span>
+              <h2>Exams:</h2>
+              <span id="exam-list"></span>
             </span>
 
-                    <h2>Available Packets:</h2>
-                    <span id="packet-list">
+            <span class="packet-wrapper">
+              <h2>
+                Packets:
+                <button
+                  id="btn-refresh-packets"
+                  class="refresh-button"
+                  title="Refresh packets"
+                >
+                  Refresh
+                </button>
+              </h2>
+              <span id="packet-list"></span>
             </span>
           </div>
-                <div id="options-link">
-                </div>
-                <div id="storage-details">
-                </div>
+          <div id="options-link"></div>
+          <div id="storage-details" style="font-family: sans-serif; font-size: 13px; color: #aaa; margin: 15px 0 10px 0; padding-left: 5px;"></div>
           <div id="cache-details">
-                    <details>
-                        <summary></summary>
-                        <ul>
-                        </ul>
+            <details class="cache-details-box">
+              <summary>Cached Exams / Questions</summary>
+              <ul style="margin: 10px 0 0 15px; padding: 0; font-size: 13px; color: #ccc;"></ul>
             </details>
           </div>
-                <details>
+          <details class="options-details">
             <summary>Options</summary>
-                    <div id="database-buttons">
-                        <input type='button' id='btn-delete-answer-databases' value='Delete local answers'>
-                        <input type='button' id='btn-delete-cached-questions' value='Delete cached questions'>
-                        <input type='button' id='btn-reset-local' value='Clear all local data'>
+            <div id="database-buttons" class="database-btn-group">
+              <input
+                type="button"
+                id="btn-delete-answer-databases"
+                value="Delete local answers"
+              />
+              <input
+                type="button"
+                id="btn-delete-cached-questions"
+                value="Delete cached questions"
+              />
+              <input
+                type="button"
+                id="btn-reset-local"
+                value="Clear all local data"
+              />
+              <details style="width: 100%; margin-top: 10px; font-size: 12px; border: 1px solid #444; border-radius: 4px; padding: 10px; background: #111; font-family: sans-serif;">
+                <summary style="cursor: pointer; font-weight: bold; color: #aaa; outline: none; user-select: none;">Manual Reset Instructions</summary>
+                <div style="margin-top: 8px; color: #bbb; line-height: 1.5;">
+                  <p style="margin: 0 0 8px 0;">If the automatic reset parameter fails, perform a manual reset in your browser:</p>
+                  <ol style="margin: 0; padding-left: 18px;">
+                    <li style="margin-bottom: 4px;">Open Developer Tools by pressing <strong>F12</strong> or <strong>Ctrl+Shift+I</strong> (Cmd+Option+I on Mac).</li>
+                    <li style="margin-bottom: 4px;">Navigate to the <strong>Application</strong> tab (Chrome/Edge) or <strong>Storage</strong> tab (Firefox).</li>
+                    <li style="margin-bottom: 4px;">Locate storage items and select <strong>Clear Site Data</strong> or delete entries under <em>IndexedDB</em>, <em>Local Storage</em>, and <em>Session Storage</em>.</li>
+                    <li>Reload the page.</li>
+                  </ol>
                 </div>
-                    <div id="local-fileloader">
-                        <form id="jsonFile" name="jsonFile" enctype="multipart/form-data" method="post">
-
-                            <fieldset>
+              </details>
+            </div>
+            <div id="local-fileloader" class="local-loader-field">
+              <form
+                id="jsonFile"
+                name="jsonFile"
+                enctype="multipart/form-data"
+                method="post"
+              >
+                <fieldset style="border: none; padding: 0; margin: 0;">
                   <h2>Load local question set</h2>
-                                <input type='file' id='fileinput'>
-                                <input type='button' id='btn-local-file-load' value='Load'>
+                  <input type="file" id="fileinput" />
+                  <input type="button" id="btn-local-file-load" value="Load" />
                 </fieldset>
               </form>
             </div>
+            <p style="margin: 15px 0;">
+              <button id="btn-view-local-answers" class="view-answers-btn">
+                View local saved answers
+              </button>
+            </p>
+            <div id="logging-controls" style="margin-top: 15px; border-top: 1px solid #333; padding-top: 15px; font-family: sans-serif; font-size: 13px;">
+              <label for="select-log-level" style="font-weight: bold; color: #ccc;">Logging Level:</label>
+              <select id="select-log-level" style="background:#222; color:#fff; border:1px solid #555; padding: 4px 8px; border-radius: 4px; font-size: 13px; margin-left: 5px; cursor: pointer; outline: none;">
+                <option value="silent">Disabled (Silent)</option>
+                <option value="error">Error</option>
+                <option value="warn">Warn</option>
+                <option value="info">Info</option>
+                <option value="debug">Debug</option>
+              </select>
+            </div>
           </details>
         </div>
         <div id="review-overlay" class="fullscreen-overlay">
@@ -124,8 +292,8 @@
             Overcall: <span id="overcall-number"></span><br />
             Incorrect call: <span id="incorrectcall-number"></span><br />
           </div>
-                <ul id='review-answer-list'></ul>
-                <table id='review-answer-table'></table>
+          <ul id="review-answer-list"></ul>
+          <table id="review-answer-table"></table>
         </div>
       </div>
     </div>
@@ -133,24 +301,39 @@
     <div id="finish-dialog" class="dialog modal">
       <h3 class="dialog-title">Finish exam and review?</h3>
       <div class="dialog-text">
-            <button id="finish-exam" class="navigation dialog-yes">Finish and review</button>
-            <button id="finish-cancel" class="navigation dialog-cancel">Continue exam</button>
+        <button id="finish-exam" class="navigation dialog-yes">
+          Finish and review
+        </button>
+        <button id="finish-cancel" class="navigation dialog-cancel">
+          Continue exam
+        </button>
       </div>
     </div>
 
     <div id="start-dialog" class="dialog modal">
       <h3 class="dialog-title">Start <span class="exam-name"></span></h3>
       <div class="packet-database-options">
-            <input type='button' id='btn-delete-current' value='Reset current packet answers'><br />
-            <input type='button' id='btn-delete-current-saved-answers' value='Reset current packet saved answers'>
+        <input
+          type="button"
+          id="btn-delete-current"
+          value="Reset current packet answers"
+        /><br />
+        <input
+          type="button"
+          id="btn-delete-current-saved-answers"
+          value="Reset current packet saved answers"
+        />
       </div>
       <div class="dialog-text">
         Click to start exam.
-            <p>You will have <input type='number' size=2 class='exam-time'></input> minutes.</p>
+        <p>
+          You will have
+          <input type="number" size="2" class="exam-time" /> minutes.
+        </p>
       </div>
       <div id="exam-candidate-number" class="dialog-text hidden">
         Check your below candidate number / user is correct.
-            <input type='text' size=10 id='candidate-number2' disabled></input>
+        <input type="text" size="10" id="candidate-number2" disabled />
       </div>
       <button class="start-packet-button navigation dialog-yes">Start</button>
     </div>
@@ -160,24 +343,60 @@
       <div class="dialog-text">
         Allocated time has ended. You can review or continue.
       </div>
-        <button id="time-up-review-button" class="navigation dialog-review">Review</button>
-        <button id="time-up-continue-button" class="navigation dialog-yes">Continue</button>
-        <button id="dialog-submit-button" class="submit-button navigation dialog-review hidden"><b>submit</b></button>
+      <button id="btn-time-up-review" class="navigation dialog-review">
+        Review
+      </button>
+      <button id="time-up-continue-button" class="navigation dialog-yes">
+        Continue
+      </button>
+      <button
+        id="dialog-submit-button"
+        class="submit-button navigation dialog-review hidden"
+      >
+        <b>submit</b>
+      </button>
     </div>
 
     <div id="login-dialog" class="dialog modal noclose">
       <h3 class="dialog-title">Enter Details</h3>
       <div class="dialog-text">
-            Candidate number: <input type="number" id="candidate-number" name="candidate" required size="10"><br />
-            Passcode: <input type="text" id="passcode" name="passcode" required size="10"><br />
+        Candidate number:
+        <input
+          type="number"
+          id="candidate-number"
+          name="candidate"
+          required
+          size="10"
+        /><br />
+        Passcode:
+        <input
+          type="text"
+          id="passcode"
+          name="passcode"
+          required
+          size="10"
+        /><br />
+      </div>
+      <button id="btn-login" class="navigation dialog-yes">Login</button>
+    </div>
+
+    <div id="resume-dialog" class="dialog modal noclose">
+      <h3 class="dialog-title">Resume Session?</h3>
+      <div class="dialog-text">
+        <p id="resume-text">Choose a previous session to continue, or start a new one:</p>
+        <div id="resume-sessions-list" style="margin: 15px 0; max-height: 200px; overflow-y: auto;">
+          <!-- Session options list -->
+        </div>
+      </div>
+      <div class="dialog-buttons" style="display: flex; gap: 10px; justify-content: flex-end; margin-top: 15px;">
+        <button id="btn-resume-start-new" class="navigation dialog-no" style="margin: 0;">Start New</button>
+        <button id="btn-resume-continue" class="navigation dialog-yes" style="margin: 0;" disabled>Continue</button>
       </div>
-        <button id="login-button" class="navigation dialog-yes">Login</button>
     </div>
 
     <div id="loading" class="fullscreen-overlay">
       <div class="progress-block">
-            <div id="progress">
-            </div>
+        <div id="progress"></div>
         <div class="sk-cube-grid full">
           <div class="sk-cube sk-cube1"></div>
           <div class="sk-cube sk-cube2"></div>
@@ -200,36 +419,39 @@
       </div>
     </div>
 
-    <div id="pause" class="fullscreen-overlay">
-    </div>
+    <div id="pause" class="fullscreen-overlay"></div>
 
-    <div id="packet-history" class="fullscreen-overlay">
-    </div>
+    <div id="packet-history" class="fullscreen-overlay"></div>
 
-    <div id="database-error" class="fullscreen-overlay">
-    </div>
+    <script src="https://browser.sentry-cdn.com/8.48.0/bundle.min.js" crossorigin="anonymous"></script>
+    <div id="database-error" class="fullscreen-overlay"></div>
+    <script
+      src="https://js-de.sentry-cdn.com/017b4494d7038e3e789fe38378b53fb2.min.js"
+      crossorigin="anonymous"
+    ></script>
 
+    <script src="lib/loglevel.min.js"></script>
     <script src="lib/uuidv4.min.js" type="module"></script>
     <script src="lib/jquery-3.4.1.min.js" type="text/javascript"></script>
     <script src="lib/jq-ajax-progress.min.js" type="text/javascript"></script>
     <script src="lib/easytimer.min.js" type="module"></script>
     <script src="lib/hammer.js"></script>
-    <script src="https://unpkg.com/cornerstone-core/dist/cornerstone.js"></script>
+    <script src="lib/cornerstone.js"></script>
     <script src="lib/dicomParser.min.js"></script>
     <script src="lib/cornerstoneMath.min.js"></script>
     <!-- <script src="lib/cornerstoneTools.min.js"></script> -->
-    <script src="https://www.unpkg.com/cornerstone-tools@5.2.0/dist/cornerstoneTools.js"></script>
+    <script src="lib/cornerstoneTools.js"></script>
     <script src="lib/cornerstoneWebImageLoader.min.js"></script>
     <script src="lib/cornerstoneWADOImageLoader.js"></script>
     <script src="lib/cornerstone-base64-image-loader.umd.js"></script>
     <script src="lib/dexie.js"></script>
     <script src="lib/jquery.modal.min.js"></script>
     <!-- <script src="packets/rr1" defer="defer"></script> -->
+
     <script src="js/main.js" defer="defer" type="module"></script>
     <script src="lib/notify.min.js" type="text/javascript"></script>
 
-<script>
-</script>
-</body>
 
+    <script></script>
+  </body>
 </html>

js/db.js

@@ -0,0 +1,16 @@
+/* global Dexie */
+
+// Set up database
+export const db = new Dexie("answers_database");
+db.version(1).stores({
+  answers: "[aid+cid+eid+qid+qidn], [aid+cid+eid], qid, ans, eid",
+  flags: "[aid+cid+eid+qid+qidn], [aid+cid+eid], qid",
+  user_answers: "[qid+type+ans], [qid+type]",
+  session: "[eid+aid], eid, packet, aid, status, date, score, max_score, exam_time, time_left, question_order, questions_answered, total_questions",
+});
+
+export const question_db = new Dexie("question_database");
+question_db.version(1).stores({
+  question_data: "&[qid+type], qid, type",
+  saved_exams: "&eid, type, exam_mode, name, order, time, exam_json_id",
+});

js/interact.js

@@ -3,7 +3,11 @@ import * as config from "./config.js";
 /**
  * Submits answers
  */
-export function submitAnswers(exam_details, db, config) {
+export function submitAnswers(exam_details, db, URLS) {
+  if (!exam_details || !exam_details.exam_mode) {
+    alert("Answers can only be submitted when the exam is in exam mode.");
+    return;
+  }
   getJsonAnswers(exam_details, db)
     .then((a) => {
       let json = {
@@ -12,7 +16,7 @@ export function submitAnswers(exam_details, db, config) {
         start_time: exam_details.start_time,
         answers: JSON.stringify(a),
       };
-      postAnswers(json, config, exam_details);
+      postAnswers(json, URLS, exam_details);
     })
     .catch((e) => {
       console.debug(e)
@@ -44,11 +48,12 @@ export function getJsonAnswers(exam_details, db) {
  * Posts answers to url
  * @param {*} ans - json representation of answers
  */
-export function postAnswers(ans, config, exam_details) {
+export function postAnswers(ans, URLS, exam_details) {
   $("#progress").html("Submitting answers...");
-  console.debug("postAnswers", ans, config, exam_details)
+  console.debug("postAnswers", ans, URLS, exam_details)
+  console.debug("posturl", URLS.exam_submit_url)
 
-  $.post(config.exam_submit_url, ans, null, "json")
+  $.post(URLS.exam_submit_url, ans, null, "json")
     .done((data) => {
       console.debug("returned data", data);
       if (data.success) {
@@ -61,11 +66,17 @@ export function postAnswers(ans, config, exam_details) {
 
           if (ret) {
             $(document).trigger("saveSessionEvent", [true]);
-            if (config.exam_results_url != "") {
-              let url = config.exam_results_url;
+            if (URLS.exam_results_url != "") {
+              let url = URLS.exam_results_url;
 
               if (exam_details.cid != "") {
-                url = url + exam_details.cid;
+                url = `${url}${exam_details.cid}`;
+                if (localStorage.getItem("cid.passcode") != null) {
+                  url = `${url}/${localStorage.getItem("cid.passcode")}`;
+                  }
+                if (exam_details.cid.startsWith("u-")) {
+                  url = URLS.exam_user_results_url;
+              }
               }
               $("#options-link")
                 .empty()
@@ -80,74 +91,97 @@ export function postAnswers(ans, config, exam_details) {
           alert(`Answers sucessfully submitted.`);
         }
       } else {
-        submissionError(data, ans, exam_details);
+        submissionError(data, ans, exam_details, URLS);
       }
     })
     .fail((e) => {
       // Will occur with server error such as 500
       console.debug("error", e);
-      submissionError(e, ans, exam_details);
+      submissionError(e, ans, exam_details, URLS);
     });
   // $.post( "http://localhost:8000/submit_answers", JSON.stringify(ans));
 }
 
-function submissionError(data, answer_json, exam_details) {
-  // error will not be defined with server errors
-  if (data.error != undefined) {
-    alert(`Error submitting answers: ${data.error}`);
-  } else {
-    alert(`Error submitting answers`);
-  }
-  var docHeight = $(document).height();
+export function submissionError(data, answer_json, exam_details, URLS) {
+  // Clear any existing overlay
+  $("#submit-error-overlay").remove();
 
-  let answers = JSON.parse(answer_json.answers)
+  let answers = JSON.parse(answer_json.answers);
+  let answer_map = {};
 
-  let answer_map = {}
-
-  answers.forEach((ans, n) => {
+  answers.forEach((ans) => {
     if (!answer_map.hasOwnProperty(ans.qid)) {
       answer_map[ans.qid] = [];
     }
-
     answer_map[ans.qid].push(ans);
-
   });
 
-  let html = $("<ul></ul>");
-
-  exam_details.question_order.forEach((i, j) => {
-    console.debug(i, answer_map)
-    if (i in answer_map) {
-      console.debug("YES", i, answer_map)
-      let ans_array = answer_map[i];
-      ans_array.forEach((x, y) => {
-        $(html).append(`<li><b>Question ${j+1}.${y}:</b> ${x.ans}</li>`);
+  let $list = $("<ol style='margin-left: 20px; font-size: 13px; max-height: 150px; overflow-y: auto; color: #ccc;'></ol>");
+  exam_details.question_order.forEach((qid, idx) => {
+    if (qid in answer_map) {
+      let ans_array = answer_map[qid];
+      ans_array.forEach((ans_obj, sub_idx) => {
+        $list.append(`<li><strong>Question ${idx + 1}.${sub_idx + 1}:</strong> ${ans_obj.ans}</li>`);
       });
     }
+  });
 
-  })
+  let rawJsonStr = JSON.stringify(answer_json, null, 2);
 
-  console.debug(exam_details.question_order);
-  console.debug(answer_map);
-  console.debug(html);
-
-  if ($("#submit-error-overlay").length < 1) {
-    $("body").append(
-      `<div id='submit-error-overlay'><span style='color: white'><p>An error has occurred when submitting your answers. A copy of your answers are displayed below, you may wish to <a id="save-failed-answers" href="#">save a copy</a>. Please try submitting again or refresh this page to continue (answers will be saved locally in the browser unless you clear local storage).</p><p>${html.get(0).innerHTML}</p><p>${JSON.stringify(
-        answer_json
-      )}</p></span></div>`
-    );
-
-    $("#nav-submit-button").prependTo("#submit-error-overlay");
-
-    $("#submit-error-overlay").height(docHeight);
-
-    let file = new Blob([JSON.stringify(answer_json)], {type: "application/json"})
-
-    let link = document.getElementById("save-failed-answers");
-    link.href = URL.createObjectURL(file);
-    link.download = "answers.json";
+  let errorMsg = "An error occurred while submitting your answers.";
+  if (data && data.error) {
+    errorMsg = `Server returned error: ${data.error}`;
+  } else if (data && data.statusText) {
+    errorMsg = `Network error: ${data.statusText} (${data.status})`;
   }
+
+  let $overlay = $(`
+    <div id="submit-error-overlay">
+      <div class="error-card">
+        <h3>Submission Failed</h3>
+        <p style="margin-bottom: 15px; color: #ef5350; font-weight: bold;">${errorMsg}</p>
+        <p style="font-size: 13px; color: #bbb; line-height: 1.4;">
+          Your answers are saved locally in the browser's database and will not be lost unless you clear your local data.
+          Please try to submit again, or save a backup file of your answers and contact support.
+        </p>
+        
+        <div style="margin: 15px 0;">
+          <h4 style="margin: 0 0 5px 0; font-size: 14px; color: #eee;">Submitted Answers:</h4>
+          <div style="background: #111; border: 1px solid #333; padding: 10px; border-radius: 4px;">
+            ${$list.prop("outerHTML")}
+          </div>
+        </div>
+
+        <details style="margin: 15px 0; font-size: 12px; cursor: pointer; color: #aaa;">
+          <summary style="font-weight: bold; margin-bottom: 5px;">View Raw Submission JSON</summary>
+          <pre style="background: #111; border: 1px solid #333; padding: 10px; overflow: auto; max-height: 150px; text-align: left; font-family: monospace; white-space: pre-wrap; margin: 0; color: #a5d6a7;">${rawJsonStr}</pre>
+        </details>
+
+        <div style="display: flex; justify-content: flex-end; gap: 10px; margin-top: 20px;">
+          <button id="btn-err-close" class="btn-secondary">Close</button>
+          <a id="btn-err-backup" class="button" style="text-decoration: none;"><button class="btn-secondary">Save Backup</button></a>
+          <button id="btn-err-retry">Retry Submit</button>
+        </div>
+      </div>
+    </div>
+  `);
+
+  $("body").append($overlay);
+
+  // Setup download backup link
+  let fileBlob = new Blob([JSON.stringify(answer_json)], {type: "application/json"});
+  let backupUrl = URL.createObjectURL(fileBlob);
+  $overlay.find("#btn-err-backup").attr("href", backupUrl).attr("download", `answers_backup_${exam_details.eid.replace(/\//g, "_")}.json`);
+
+  // Close handler
+  $overlay.find("#btn-err-close").on("click", function() {
+    $("#submit-error-overlay").remove();
+  });
+
+  // Retry handler
+  $overlay.find("#btn-err-retry").on("click", function() {
+    postAnswers(answer_json, URLS, exam_details);
+  });
 }
 
 export function getQuestion(url, question_number, question_total) {
@@ -180,11 +214,11 @@ export function getQuestion(url, question_number, question_total) {
   });
 }
 
-export function postSavedAnswer(type, qid, answer, e, db_object, db) {
+export function postSavedAnswer(type, qid, answer, e, db_object, db, submit_url) {
   console.debug("post", type, qid, answer, e)
   return $.ajax({
     type: "POST",
-    url: config.question_answer_submit_url,
+    url: submit_url,
     data: JSON.stringify({
       qid: `${type}/${qid}`,
       answer: answer,

js/sentry.js

@@ -0,0 +1,101 @@
+/**
+ * Sentry Error Monitoring initializer for RTS.
+ * Optimized for Free Tier with beforeSend noise filtering.
+ */
+
+export function initSentry() {
+  try {
+    const defaultDsn = "https://a5a64d2190093ce4b8972dd9a6907828@o4511766757244928.ingest.de.sentry.io/4511766900310096";
+    const metaDsn = document.querySelector('meta[name="sentry-dsn"]')?.getAttribute('content');
+    const dsn = window.SENTRY_DSN || window.RTS_SENTRY_DSN || metaDsn || defaultDsn;
+
+    if (!dsn) {
+      window.SENTRY_STATUS = { loaded: false, reason: "No DSN configured" };
+      console.warn("[Sentry] ❌ Error monitoring disabled (No DSN provided)");
+      return;
+    }
+
+    const beforeSend = (event, hint) => {
+      const error = hint?.originalException;
+      const message = event?.message || (error && error.message) || "";
+
+      // Ignore common harmless browser/network noise to preserve Sentry free quota
+      const noisePatterns = [
+        /ResizeObserver loop/i,
+        /Failed to fetch/i,
+        /NetworkError/i,
+        /Load failed/i,
+        /Script error/i,
+        /top.GLOBALS/i,
+        /chrome-extension:\/\//i,
+        /moz-extension:\/\//i,
+      ];
+
+      if (noisePatterns.some((pattern) => pattern.test(message))) {
+        return null;
+      }
+
+      return event;
+    };
+
+    const config = {
+      dsn: dsn,
+      environment: window.SENTRY_ENVIRONMENT || "production",
+      tracesSampleRate: parseFloat(window.SENTRY_TRACES_SAMPLE_RATE || "0.02"),
+      beforeSend: beforeSend,
+      ignoreErrors: [
+        "ResizeObserver loop limit exceeded",
+        "ResizeObserver loop completed with undelivered notifications.",
+        "NetworkError when attempting to fetch resource.",
+        "Failed to fetch",
+        "Load failed",
+      ],
+    };
+
+    const onInitialized = () => {
+      window.SENTRY_STATUS = { loaded: true, dsn: dsn, environment: config.environment };
+      console.info(`[Sentry] ✅ Error monitoring initialized (Env: ${config.environment})`);
+
+      // Expose a convenient window.testSentry() function for testing from browser console
+      window.testSentry = function(msg = "RTS Sentry Test Event") {
+        if (window.Sentry && typeof window.Sentry.captureException === "function") {
+          const testErr = new Error(msg);
+          window.Sentry.captureException(testErr);
+          console.info("[Sentry] 🚀 Sent test error event to Sentry:", testErr);
+          return "Sentry test event sent!";
+        } else {
+          console.error("[Sentry] ❌ Sentry is not available to send test event");
+          return "Failed to send event";
+        }
+      };
+    };
+
+    if (window.Sentry) {
+      window.Sentry.init({
+        ...config,
+        integrations: [
+          window.Sentry.browserTracingIntegration ? window.Sentry.browserTracingIntegration() : null,
+        ].filter(Boolean),
+      });
+      onInitialized();
+    } else {
+      const script = document.createElement("script");
+      script.src = "https://browser.sentry-cdn.com/8.48.0/bundle.min.js";
+      script.crossOrigin = "anonymous";
+      script.onload = () => {
+        if (window.Sentry) {
+          window.Sentry.init(config);
+          onInitialized();
+        }
+      };
+      script.onerror = () => {
+        window.SENTRY_STATUS = { loaded: false, reason: "Failed to load Sentry CDN script" };
+        console.warn("[Sentry] ❌ Failed to load Sentry CDN script");
+      };
+      document.head.appendChild(script);
+    }
+  } catch (err) {
+    window.SENTRY_STATUS = { loaded: false, error: err };
+    console.warn("[Sentry] ❌ Initialization failed:", err);
+  }
+}

js/sync.js

@@ -0,0 +1,194 @@
+// Background Sync Module for RTS
+
+import { db } from "./db.js";
+
+let syncInterval = null;
+let debounceTimeout = null;
+let currentStatus = "saved"; // "saved", "syncing", "failed", "practice"
+
+/**
+ * Update the sync UI state
+ * @param {string} status - "saved", "syncing", "failed", "practice"
+ */
+export function updateSyncUI(status) {
+  currentStatus = status;
+  const container = document.getElementById("sync-status");
+  if (!container) return;
+
+  let html = "";
+  switch (status) {
+    case "practice":
+      html = `
+        <span class="sync-dot practice"></span>
+        <span class="sync-text">Practice mode (local only)</span>
+      `;
+      break;
+    case "syncing":
+      html = `
+        <span class="sync-dot syncing"></span>
+        <span class="sync-text">Saving to server...</span>
+      `;
+      break;
+    case "failed":
+      html = `
+        <span class="sync-dot failed"></span>
+        <span class="sync-text">Offline - Save failed</span>
+      `;
+      break;
+    case "saved":
+    default:
+      html = `
+        <span class="sync-dot saved"></span>
+        <span class="sync-text">Saved to server</span>
+      `;
+      break;
+  }
+  container.innerHTML = html;
+}
+
+/**
+ * Perform background synchronization of unsynced answers
+ */
+export async function performSync(exam_details, URLS) {
+  if (!exam_details || !exam_details.exam_mode || !exam_details.eid) return;
+
+  // Find all unsynced answers for this exam/cid/aid
+  const unsynced = await db.answers
+    .where({
+      aid: exam_details.aid,
+      cid: exam_details.cid,
+      eid: exam_details.eid,
+    })
+    .filter(ans => ans.synced === false)
+    .toArray();
+
+  if (unsynced.length === 0) {
+    if (currentStatus === "syncing") {
+      updateSyncUI("saved");
+    }
+    return;
+  }
+
+  updateSyncUI("syncing");
+
+  const json = {
+    eid: exam_details.eid,
+    cid: exam_details.cid,
+    start_time: exam_details.start_time,
+    answers: JSON.stringify(unsynced),
+    in_progress: "true",
+  };
+
+  try {
+    const response = await new Promise((resolve, reject) => {
+      $.ajax({
+        type: "POST",
+        url: URLS.exam_submit_url,
+        data: json,
+        dataType: "json",
+        global: false, // Prevents triggering global ajaxStart / ajaxStop spinners
+        success: resolve,
+        error: reject,
+      });
+    });
+
+    if (response && response.success) {
+      // Mark as synced in Dexie database
+      await db.transaction("rw", db.answers, async () => {
+        for (const ans of unsynced) {
+          ans.synced = true;
+          await db.answers.put(ans);
+        }
+      });
+      updateSyncUI("saved");
+    } else {
+      updateSyncUI("failed");
+    }
+  } catch (error) {
+    console.error("Autosubmission failed:", error);
+    updateSyncUI("failed");
+  }
+}
+
+/**
+ * Trigger an immediate, debounced sync (2s delay after last change)
+ */
+export function triggerImmediateSync(exam_details, URLS) {
+  if (!exam_details || !exam_details.exam_mode) return;
+
+  if (debounceTimeout) {
+    clearTimeout(debounceTimeout);
+  }
+  debounceTimeout = setTimeout(() => {
+    performSync(exam_details, URLS);
+  }, 2000);
+}
+
+/**
+ * Initialize background sync process
+ */
+export function initSync(exam_details, URLS) {
+  // Clear any existing sync process
+  if (syncInterval) {
+    clearInterval(syncInterval);
+  }
+
+  // Setup click redirect to remote user answers on the server if in exam mode
+  const container = document.getElementById("sync-status");
+  if (container) {
+    if (exam_details && exam_details.exam_mode) {
+      $(container).css("cursor", "pointer");
+      $(container).off("click").on("click", () => {
+        let url = URLS.exam_results_url;
+        if (url) {
+          if (exam_details.cid) {
+            if (exam_details.cid.startsWith("u-")) {
+              url = URLS.exam_user_results_url || url;
+            } else {
+              url = `${url}${exam_details.cid}`;
+              const passcode = localStorage.getItem("cid.passcode");
+              if (passcode) {
+                url = `${url}/${passcode}`;
+              }
+            }
+          }
+          window.open(url, "_blank");
+        }
+      });
+    } else {
+      $(container).css("cursor", "default");
+      $(container).off("click");
+    }
+  }
+
+  if (!exam_details || !exam_details.exam_mode) {
+    updateSyncUI("practice");
+    return;
+  }
+
+  // Check if there are unsynced answers at startup
+  db.answers
+    .where({
+      aid: exam_details.aid,
+      cid: exam_details.cid,
+      eid: exam_details.eid,
+    })
+    .filter(ans => ans.synced === false)
+    .toArray()
+    .then(unsynced => {
+      if (unsynced && unsynced.length > 0) {
+        updateSyncUI("failed"); // Unsynced answers exist; they aren't accepted by server yet
+        performSync(exam_details, URLS);
+      } else {
+        updateSyncUI("saved");
+      }
+    })
+    .catch(() => {
+      updateSyncUI("saved");
+    });
+
+  // Run periodic sync every 15 seconds
+  syncInterval = setInterval(() => {
+    performSync(exam_details, URLS);
+  }, 15000);
+}

js/viewer.js

@@ -11,6 +11,9 @@ export function loadMainImage(image, stack) {
   const RotateTool = cornerstoneTools.RotateTool;
   const StackScrollTool = cornerstoneTools.StackScrollTool;
   const ArrowAnnotateTool = cornerstoneTools.ArrowAnnotateTool;
+  const LengthTool = cornerstoneTools.LengthTool;
+  const RectangleRoiTool = cornerstoneTools.RectangleRoiTool;
+  const EllipseRoiTool = cornerstoneTools.EllipseRoiTool;
   const AngleTool = cornerstoneTools.AngleTool;
   const CobbAngleTool = cornerstoneTools.CobbAngleTool;
   const EraserTool = cornerstoneTools.EraserTool;
@@ -35,6 +38,9 @@ export function loadMainImage(image, stack) {
   cornerstoneTools.addToolForElement(element, CobbAngleTool);
   cornerstoneTools.addToolForElement(element, StackScrollTool);
   cornerstoneTools.addToolForElement(element, EraserTool);
+  cornerstoneTools.addToolForElement(element, LengthTool);
+  cornerstoneTools.addToolForElement(element, RectangleRoiTool);
+  //cornerstoneTools.addToolForElement(element, EllipseRoiTool);
 
   cornerstoneTools.addToolForElement(element, ArrowAnnotateTool, {
     configuration: {
@@ -58,7 +64,9 @@ export function loadMainImage(image, stack) {
 
   setDicomCanvasNonFullscreen(element);
   cornerstone.reset(element);
-  element.scrollIntoView(false);
+  let viewerTitleBar = document.getElementById("viewer-title-bar");
+  viewerTitleBar.scrollIntoView();
+  //element.scrollIntoView(false);
   //element.scrollTo(0);
 
   $(element).dblclick(function() {
@@ -66,40 +74,13 @@ export function loadMainImage(image, stack) {
       // already fullscreen (disable it)
       disableFullscreen(this);
     } else {
-      $(".content-panel").append($(".canvas-panel"));
-      $(".canvas-panel").toggleClass("canvas-panel canvas-panel-fullscreen");
-      $("#dicom-image").attr("height", "100%");
-      $("#dicom-image").height("100%");
-      // $(".cornerstone-canvas").attr("height", "100%");
-      // $(".cornerstone-canvas").height("100%");
-      cornerstone.resize(this, true);
+      enableFullscreen(this);
     }
   });
 
   element.removeEventListener("wheel", element.wheelEventHandler);
 
-  // Add tool selector
-  $(".canvas-panel").append(
-    '<select class="control-overlay"> \
-    <option value="pan">pan [p]</option> \
-    <option value="zoom">zoom [z]</option> \
-    <option value="rotate">rotate [r]</option> \
-    <option value="angle">angle</option> \
-    <option value="cobbangle">cobb angle</option> \
-    <option value="eraser">eraser</option> \
-    <option value="scroll" hidden="" disabled="">scroll (1/1)</option> \
-    <option value="window">window ()</option> \
-    <option value="abdomen" hidden="" disabled="">window = abdomen [a]</option> \
-    <option value="pulmonary" hidden="" disabled="">window = pulmonary [u]</option> \
-    <option value="brain" hidden="" disabled="">window = brain [b]</option> \
-    <option value="bone" hidden="" disabled="">window = bone [o]</option> \
-    <option value="reset">reset [e]</option> \
-    <option value="close">close [c]</option> \
-    <option disabled="true" value="notes">[modality = CR][size = 9.8]</option> \
-    </select>'
-  );
-
-  $(".control-overlay")
+  $(".dicom-select-control")
     .get(0)
     .addEventListener("change", function() {
       changeControlSelection();
@@ -117,7 +98,7 @@ function onImageRendered(e) {
   const eventData = e.detail;
 
   // Update ww/wl
-  const sel = $(".control-overlay").get(0);
+  const sel = $(".dicom-select-control").get(0);
   sel.options[find_option(sel, "window")].firstChild.textContent =
     "window (" +
     Math.round(eventData.viewport.voi.windowCenter) +
@@ -176,7 +157,10 @@ export function disableFullscreen(dicom_element) {
   $(".canvas-panel-fullscreen").toggleClass(
     "canvas-panel canvas-panel-fullscreen"
   );
-  $(".question").append($(".canvas-panel"));
+
+  $("#disable-fullscreen-viewer-button").hide();
+  $("#fullscreen-viewer-button").show();
+  $(".question").prepend($(".canvas-panel"));
   $(".canvas-panel").get(0).scrollIntoView();
 
   setDicomCanvasNonFullscreen(dicom_element);
@@ -279,10 +263,12 @@ export function debugCornerstone() {
 
 /**
  * Registers the selected dicom tool
+ * 
+ * This also allows selecting of window levels
  */
 export function changeControlSelection() {
   // We also duplicate the sel that are available
-  const sel = $(".control-overlay").get(0);
+  const sel = $(".dicom-select-control").get(0);
 
   const old = sel.oldSelectedIndex;
   sel.oldSelectedIndex = sel.selectedIndex;
@@ -307,6 +293,25 @@ export function changeControlSelection() {
       });
       break;
     }
+    case "measure": {
+      cornerstoneTools.setToolActiveForElement(dicom_element, "Length", {
+        mouseButtonMask: 1,
+      });
+      break;
+    }
+    case "rectangle": {
+      cornerstoneTools.setToolActiveForElement(dicom_element, "RectangleRoi", {
+        mouseButtonMask: 1,
+      });
+      break;
+    }
+    case "ellipse": {
+      cornerstoneTools.setToolActiveForElement(dicom_element, "EllipseRoi", {
+        mouseButtonMask: 1,
+      });
+      break;
+    }
+
     case "angle": {
       cornerstoneTools.setToolActiveForElement(dicom_element, "Angle", {
         mouseButtonMask: 1,
@@ -376,24 +381,13 @@ export function changeControlSelection() {
       break;
     }
     case "reset": {
-      cornerstone.reset(dicom_element);
+      resetViewer(dicom_element);
       sel.selectedIndex = old;
       sel.oldSelectedIndex = old;
       break;
     }
     case "close": {
-      // disable fullscreen if required
-      if ($(".canvas-panel").length == 0) {
-        disableFullscreen(dicom_element);
-      }
-      if (dicom_element != undefined) {
-        // See https://github.com/cornerstonejs/cornerstoneTools/issues/1337
-        cornerstone.removeElementData(dicom_element);
-        cornerstone.disable(dicom_element);
-        $(".canvas-panel").remove();
-        $(".figure-open").removeClass("figure-open").addClass("figure");
-        $(dicom_element).remove();
-      }
+      closeViewer(dicom_element);
       break;
     }
   }
@@ -403,6 +397,12 @@ export function changeControlSelection() {
   }
 }
 
+function resetViewer(dicom_element) {
+  cornerstoneTools.clearToolState(dicom_element, "RectangleRoi");
+  cornerstoneTools.clearToolState(dicom_element, "Length");
+  cornerstone.reset(dicom_element);
+}
+
 /**
  * Handle key button events
  * These are the same as in the RCR pratique implementation
@@ -422,12 +422,16 @@ export function keydown_handler(event) {
   if (target_element == "INPUT" || target_element == "TEXTAREA") {
     return;
   }
-  const sel = $(".control-overlay").get(0);
+  const sel = $(".dicom-select-control").get(0);
   switch (event.code) {
     case "KeyP":
       sel.selectedIndex = find_option(sel, "pan");
       changeControlSelection();
       break;
+    case "KeyC":
+      sel.selectedIndex = find_option(sel, "rectangle");
+      changeControlSelection();
+      break;
     case "KeyZ":
       sel.selectedIndex = find_option(sel, "zoom");
       changeControlSelection();
@@ -466,7 +470,7 @@ export function keydown_handler(event) {
       changeControlSelection();
       break;
     // Escape and C do the same
-    case "KeyC":
+    //case "KeyC":
     case "Escape":
       sel.selectedIndex = find_option(sel, "close");
       changeControlSelection();
@@ -527,7 +531,7 @@ export function keydown_handler(event) {
           manualZoomDicom(-1);
           break;
         case "rotate":
-          manualRotateDicom(1);
+          manualRotateDicom(-1);
           break;
         case "scroll":
           manualScrollDicom(1);
@@ -547,7 +551,7 @@ export function keydown_handler(event) {
           manualZoomDicom(1);
           break;
         case "rotate":
-          manualRotateDicom(-1);
+          manualRotateDicom(1);
           break;
         case "scroll":
           manualScrollDicom(-1);
@@ -562,16 +566,6 @@ export function keydown_handler(event) {
   event.preventDefault();
 }
 
-/**
- * View cornstone image
- * @param {*} t
- * @param {*} source
- */
-export function openMainImage(current_question, t, source) {
-  /**
-   * Load image
-   * @param {*} images - list of images
-   */
 function loadAnnotation(imageId, annotation) {
   const toolStateManager =
     cornerstoneTools.globalImageIdSpecificToolStateManager;
@@ -588,67 +582,58 @@ export function openMainImage(current_question, t, source) {
   toolStateManager.restoreToolState(tool_state);
 }
 async function load(images, annotations) {
-    //console.debug("Load function", images)
-    const imageIds = [];
-    for (let i = 0; i < images.length; i++) {
-      const data_url = images[i];
+  // Parallelize image preparation and annotation loading
+  const imageTasks = images.map(async (data_url, i) => {
     const annotation = annotations[i];
-
-      // check stack type
+    let imageId;
     if (data_url.startsWith("data:image")) {
-        const imageId = "base64://" + data_url.split(",")[1];
-
-        loadAnnotation(imageId, annotation);
-
-        imageIds.push(imageId);
-        //} else if (data_url.startsWith("data:application/dicom")) {
+      imageId = "base64://" + data_url.split(",")[1];
     } else if (data_url.startsWith("data:")) {
-        // stack = stack.split(";")[1];
-
       const dfile = await urltoFile(data_url, "dicom", "application/dicom");
-
-        const imageId = cornerstoneWADOImageLoader.wadouri.fileManager.add(
-          dfile
-        );
-
-        loadAnnotation(imageId, annotation);
-
-        imageIds.push(imageId);
-        // cornerstone.loadImage(imageId).then(function(image) {
-        //    tempFunction(image);
-        // });
+      imageId = cornerstoneWADOImageLoader.wadouri.fileManager.add(dfile);
     } else {
       let url = data_url;
-        //if (data_url.startsWith("http")) {
-        //  url = data_url;
-        //} else {
-        //  url = window.location.href.replace(/\/\#\/?$/, "") + "/" + data_url;
-        //}
-
       if (url.endsWith("dcm")) {
         url = "wadouri:" + url;
       }
-
-        // if there is no extension treat it as a dicom
       if (/(?:\/|^)[^.\/]+$/.test(url)) {
         url = "wadouri:" + url;
       }
-        //console.debug(url)
-
-        loadAnnotation(url, annotation);
-
-        imageIds.push(url);
-      }
+      imageId = url;
     }
+    return {imageId, annotation};
+  });
+
+  // Wait for all image tasks to complete
+  const imageResults = await Promise.all(imageTasks);
+  const imageIds = imageResults.map(r => r.imageId);
+
+  // Display the first image as soon as possible
+  cornerstone.loadAndCacheImage(imageIds[0]).then(function(image) {
     const stack = {
       currentImageIdIndex: 0,
       imageIds,
     };
-    cornerstone.loadAndCacheImage(imageIds[0]).then(function (image) {
     loadMainImage(image, stack);
+    // Restore annotations for all images after display
+    imageResults.forEach(({imageId, annotation}) => {
+      loadAnnotation(imageId, annotation);
+    });
   });
 }
 
+/**
+ * View cornstone image
+ * @param {*} t
+ * @param {*} source
+ */
+export function openMainImage(current_question, t, source) {
+  /**
+   * Load image
+   * @param {*} images - list of images
+   */
+
+
   if (current_question) {
     // Check if the figure is already loaded (or if another one is)
     const open_figure = $("#dicom-image").data("figure");
@@ -658,7 +643,7 @@ export function openMainImage(current_question, t, source) {
       // No full size figure / dicom loaded yet
       if (figure_to_load == open_figure) {
         // Scroll to the image if it is already open
-        document.getElementById("dicom-image").scrollIntoView();
+        document.getElementById("viewer-title-bar").scrollIntoView();
         return;
       } else {
         let el;
@@ -676,11 +661,97 @@ export function openMainImage(current_question, t, source) {
 
     source.className = "figure-open";
 
-    $(".question").append(
-      '<div class= "canvas-panel"><div id="dicom-image" data-figure="' +
-        figure_to_load +
-        '"></div></div>'
-    );
+    let image_title = source.getElementsByClassName("figcaption")[0].textContent;
+
+    // Native DOM creation for performance
+    const questionElem = document.querySelector('.question');
+    const canvasPanel = document.createElement('div');
+    canvasPanel.className = 'canvas-panel';
+
+    const viewerTitleBar = document.createElement('div');
+    viewerTitleBar.id = 'viewer-title-bar';
+
+    const flexDiv = document.createElement('div');
+    flexDiv.style.flex = '1 1 auto';
+
+    const viewerTitle = document.createElement('div');
+    viewerTitle.id = 'viewer-title';
+    viewerTitle.style.color = 'white';
+    viewerTitle.textContent = image_title;
+    flexDiv.appendChild(viewerTitle);
+    viewerTitleBar.appendChild(flexDiv);
+
+    // Select control
+    const select = document.createElement('select');
+    select.title = 'SELECT CLICK ACTION';
+    select.className = 'dicom-select-control title-bar-button';
+    select.style.marginRight = '8px';
+    const options = [
+      { value: 'pan', text: 'pan [p]' },
+      { value: 'zoom', text: 'zoom [z]' },
+      { value: 'rotate', text: 'rotate [r]' },
+      { value: 'scroll', text: 'scroll [s]' },
+      { value: 'window', text: 'window (128 ± 127.5) [w]' },
+      { value: 'abdomen', text: 'window = abdomen [a]', hidden: true, disabled: true },
+      { value: 'pulmonary', text: 'window = pulmonary [p]', hidden: true, disabled: true },
+      { value: 'brain', text: 'window = brain [b]', hidden: true, disabled: true },
+      { value: 'bone', text: 'window = bone [o]', hidden: true, disabled: true },
+      { value: 'measure', text: 'measure [m]' },
+      { value: 'ellipse', text: 'ellipse [l]' },
+      { value: 'rectangle', text: 'rectangle [c]' },
+      { value: 'reset', text: 'reset [e]' },
+      { value: 'notes', text: '[modality = SC]', disabled: true }
+    ];
+    options.forEach(opt => {
+      const o = document.createElement('option');
+      o.value = opt.value;
+      o.textContent = opt.text;
+      if (opt.disabled) o.disabled = true;
+      if (opt.hidden) o.hidden = true;
+      select.appendChild(o);
+    });
+    viewerTitleBar.appendChild(select);
+
+    // Buttons
+    function createButton(id, title, svg, style = '') {
+      const btn = document.createElement('button');
+      btn.id = id;
+      btn.className = 'title-bar-button';
+      btn.title = title;
+      btn.style.marginRight = '8px';
+      if (style) btn.style.display = style;
+      const span = document.createElement('span');
+      span.className = 'viewer-icon';
+      span.innerHTML = svg;
+      btn.appendChild(span);
+      return btn;
+    }
+    // SVGs
+    const svgReset = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-arrow-counterclockwise" viewBox="0 0 16 16"><path fill-rule="evenodd" d="M8 3a5 5 0 1 1-4.546 2.914.5.5 0 0 0-.908-.417A6 6 0 1 0 8 2z"/><path d="M8 4.466V.534a.25.25 0 0 0-.41-.192L5.23 2.308a.25.25 0 0 0 0 .384l2.36 1.966A.25.25 0 0 0 8 4.466"/></svg>`;
+    const svgFullscreen = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-fullscreen" viewBox="0 0 16 16"><path d="M1.5 1a.5.5 0 0 0-.5.5v4a.5.5 0 0 1-1 0v-4A1.5 1.5 0 0 1 1.5 0h4a.5.5 0 0 1 0 1zM10 .5a.5.5 0 0 1 .5-.5h4A1.5 1.5 0 0 1 16 1.5v4a.5.5 0 0 1-1 0v-4a.5.5 0 0 0-.5-.5h-4a.5.5 0 0 1-.5-.5M.5 10a.5.5 0 0 1 .5.5v4a.5.5 0 0 0 .5.5h4a.5.5 0 0 1 0 1h-4A1.5 1.5 0 0 1 0 14.5v-4a.5.5 0 0 1 .5-.5m15 0a.5.5 0 0 1 .5.5v4a1.5 1.5 0 0 1-1.5 1.5h-4a.5.5 0 0 1 0-1h4a.5.5 0 0 0-.5-.5v-4a.5.5 0 0 1 .5-.5"/></svg>`;
+    const svgFullscreenExit = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-fullscreen-exit" viewBox="0 0 16 16"><path d="M5.5 0a.5.5 0 0 1 .5.5v4A1.5 1.5 0 0 1 4.5 6h-4a.5.5 0 0 1 0-1h4a.5.5 0 0 0 .5-.5v-4a.5.5 0 0 1 .5-.5m5 0a.5.5 0 0 1 .5.5v4a.5.5 0 0 0 .5.5h4a.5.5 0 0 1 0 1h-4A1.5 1.5 0 0 1 10 4.5v-4a.5.5 0 0 1 .5-.5M0 10.5a.5.5 0 0 1 .5-.5h4A1.5 1.5 0 0 1 6 11.5v4a.5.5 0 0 1-1 0v-4a.5.5 0 0 0-.5-.5h-4a.5.5 0 0 1-.5-.5m10 1a1.5 1.5 0 0 1 1.5-1.5h4a.5.5 0 0 1 0 1h-4a.5.5 0 0 0-.5.5v4a.5.5 0 0 1-1 0z"/></svg>`;
+    const svgClose = `<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="currentColor" class="bi bi-x-lg" viewBox="0 0 16 16"><path d="M2.146 2.854a.5.5 0 1 1 .708-.708L8 7.293l5.146-5.147a.5.5 0 0 1 .708.708L8.707 8l5.147 5.146a.5.5 0 0 1-.708.708L8 8.707l-5.146 5.147a.5.5 0 0 1-.708-.708L7.293 8z"/></svg>`;
+
+    const btnReset = createButton('reset-viewer-button', 'RESET VIEW', svgReset);
+    const btnFullscreen = createButton('fullscreen-viewer-button', 'TOGGLE FULLSCREEN', svgFullscreen);
+    const btnFullscreenExit = createButton('disable-fullscreen-viewer-button', 'TOGGLE FULLSCREEN', svgFullscreenExit, 'none');
+    const btnClose = createButton('close-viewer-button', 'CLOSE VIEWER', svgClose);
+
+    viewerTitleBar.appendChild(btnReset);
+    viewerTitleBar.appendChild(btnFullscreen);
+    viewerTitleBar.appendChild(btnFullscreenExit);
+    viewerTitleBar.appendChild(btnClose);
+
+    canvasPanel.appendChild(viewerTitleBar);
+
+    // DICOM image container
+    const dicomImageDiv = document.createElement('div');
+    dicomImageDiv.id = 'dicom-image';
+    dicomImageDiv.setAttribute('data-figure', figure_to_load);
+    canvasPanel.appendChild(dicomImageDiv);
+
+    // Prepend to question
+    questionElem.insertBefore(canvasPanel, questionElem.firstChild);
 
     let images = current_question.images[figure_to_load.split("-")[1]];
     // images = current_question.images
@@ -698,10 +769,40 @@ export function openMainImage(current_question, t, source) {
       }
     }
 
+    const dicom_element = document.getElementById("dicom-image");
+    // Bind button actions
+    $("#close-viewer-button").click(function() {
+      closeViewer(dicom_element);
+    });
+    $("#reset-viewer-button").click(function() {
+      resetViewer(dicom_element);
+    });
+    $("#fullscreen-viewer-button").click(function() {
+      enableFullscreen(dicom_element);
+    });
+    $("#disable-fullscreen-viewer-button").click(function() {
+      disableFullscreen(dicom_element);
+    });
+
     load(images, annotations);
   }
 }
 
+function closeViewer(dicom_element) {
+  // disable fullscreen if required
+  if ($(".canvas-panel").length == 0) {
+    disableFullscreen(dicom_element);
+  }
+  if (dicom_element != undefined) {
+    // See https://github.com/cornerstonejs/cornerstoneTools/issues/1337
+    cornerstone.removeElementData(dicom_element);
+    cornerstone.disable(dicom_element);
+    $(".canvas-panel").remove();
+    $(".figure-open").removeClass("figure-open").addClass("figure");
+    $(dicom_element).remove();
+  }
+}
+
 export function urltoFile(url, filename, mimeType) {
   return fetch(url)
     .then(function(res) {
@@ -711,3 +812,16 @@ export function urltoFile(url, filename, mimeType) {
       return new File([buf], filename, {type: mimeType});
     });
 }
+
+
+function enableFullscreen(dicom_element) {
+  $(".content-panel").prepend($(".canvas-panel"));
+  $(".canvas-panel").toggleClass("canvas-panel canvas-panel-fullscreen");
+  $("#dicom-image").attr("height", "100%");
+  $("#dicom-image").height("100%");
+  $("#disable-fullscreen-viewer-button").show();
+  $("#fullscreen-viewer-button").hide();
+  // $(".cornerstone-canvas").attr("height", "100%");
+  // $(".cornerstone-canvas").height("100%");
+  cornerstone.resize(dicom_element, true);
+}

lib/loglevel.min.js

@@ -0,0 +1,2 @@
+/*! loglevel - v1.8.1 - https://github.com/pimterry/loglevel - (c) 2022 Tim Perry - licensed MIT */
+!function(a,b){"use strict";"function"==typeof define&&define.amd?define(b):"object"==typeof module&&module.exports?module.exports=b():a.log=b()}(this,function(){"use strict";function a(a,b){var c=a[b];if("function"==typeof c.bind)return c.bind(a);try{return Function.prototype.bind.call(c,a)}catch(b){return function(){return Function.prototype.apply.apply(c,[a,arguments])}}}function b(){console.log&&(console.log.apply?console.log.apply(console,arguments):Function.prototype.apply.apply(console.log,[console,arguments])),console.trace&&console.trace()}function c(c){return"debug"===c&&(c="log"),typeof console!==i&&("trace"===c&&j?b:void 0!==console[c]?a(console,c):void 0!==console.log?a(console,"log"):h)}function d(a,b){for(var c=0;c<k.length;c++){var d=k[c];this[d]=c<a?h:this.methodFactory(d,a,b)}this.log=this.debug}function e(a,b,c){return function(){typeof console!==i&&(d.call(this,b,c),this[a].apply(this,arguments))}}function f(a,b,d){return c(a)||e.apply(this,arguments)}function g(a,b,c){function e(a){var b=(k[a]||"silent").toUpperCase();if(typeof window!==i&&m){try{return void(window.localStorage[m]=b)}catch(a){}try{window.document.cookie=encodeURIComponent(m)+"="+b+";"}catch(a){}}}function g(){var a;if(typeof window!==i&&m){try{a=window.localStorage[m]}catch(a){}if(typeof a===i)try{var b=window.document.cookie,c=b.indexOf(encodeURIComponent(m)+"=");-1!==c&&(a=/^([^;]+)/.exec(b.slice(c))[1])}catch(a){}return void 0===l.levels[a]&&(a=void 0),a}}function h(){if(typeof window!==i&&m){try{return void window.localStorage.removeItem(m)}catch(a){}try{window.document.cookie=encodeURIComponent(m)+"=; expires=Thu, 01 Jan 1970 00:00:00 UTC"}catch(a){}}}var j,l=this;b=null==b?"WARN":b;var m="loglevel";"string"==typeof a?m+=":"+a:"symbol"==typeof a&&(m=void 0),l.name=a,l.levels={TRACE:0,DEBUG:1,INFO:2,WARN:3,ERROR:4,SILENT:5},l.methodFactory=c||f,l.getLevel=function(){return j},l.setLevel=function(b,c){if("string"==typeof b&&void 0!==l.levels[b.toUpperCase()]&&(b=l.levels[b.toUpperCase()]),!("number"==typeof b&&b>=0&&b<=l.levels.SILENT))throw"log.setLevel() called with invalid level: "+b;if(j=b,!1!==c&&e(b),d.call(l,b,a),typeof console===i&&b<l.levels.SILENT)return"No console available for logging"},l.setDefaultLevel=function(a){b=a,g()||l.setLevel(a,!1)},l.resetLevel=function(){l.setLevel(b,!1),h()},l.enableAll=function(a){l.setLevel(l.levels.TRACE,a)},l.disableAll=function(a){l.setLevel(l.levels.SILENT,a)};var n=g();null==n&&(n=b),l.setLevel(n,!1)}var h=function(){},i="undefined",j=typeof window!==i&&typeof window.navigator!==i&&/Trident\/|MSIE /.test(window.navigator.userAgent),k=["trace","debug","info","warn","error"],l=new g,m={};l.getLogger=function(a){if("symbol"!=typeof a&&"string"!=typeof a||""===a)throw new TypeError("You must supply a name when creating a logger.");var b=m[a];return b||(b=m[a]=new g(a,l.getLevel(),l.methodFactory)),b};var n=typeof window!==i?window.log:void 0;return l.noConflict=function(){return typeof window!==i&&window.log===l&&(window.log=n),l},l.getLoggers=function(){return m},l.default=l,l});

package.json

@@ -6,8 +6,10 @@
   "directories": {
     "lib": "lib"
   },
+  "type": "module",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "NODE_OPTIONS=--experimental-vm-modules jest",
+    "lint": "eslint --fix . && echo 'Lint complete.'"
   },
   "repository": {
     "type": "git",
@@ -21,7 +23,7 @@
   "homepage": "https://github.com/xkjq/rts#readme",
   "devDependencies": {
     "eslint": "^6.8.0",
-    "eslint-config-google": "^0.14.0"
-  },
-  "lint": "eslint --fix . && echo 'Lint complete.'"
+    "eslint-config-google": "^0.14.0",
+    "jest": "^30.4.2"
+  }
 }

tests/sync.test.js

@@ -0,0 +1,122 @@
+// Unit tests for RTS Background Sync
+
+import { jest } from "@jest/globals";
+
+// Mock Dexie and jQuery globally before importing modules that use them
+const mockAnswersWhere = jest.fn();
+const mockAnswersFilter = jest.fn();
+const mockAnswersToArray = jest.fn();
+const mockAnswersPut = jest.fn();
+const mockTransaction = jest.fn();
+
+globalThis.Dexie = class {
+  constructor(name) {
+    this.name = name;
+    this.answers = {
+      where: mockAnswersWhere,
+      put: mockAnswersPut,
+    };
+  }
+  version() {
+    return {
+      stores: () => {}
+    };
+  }
+  transaction(mode, tables, cb) {
+    return mockTransaction(mode, tables, cb);
+  }
+};
+
+// Define mock jQuery $.ajax
+const mockAjax = jest.fn();
+
+globalThis.$ = {
+  ajax: mockAjax,
+};
+
+// Mock DOM elements
+const mockHtml = jest.fn();
+globalThis.document = {
+  getElementById: jest.fn(() => ({
+    set innerHTML(val) {
+      mockHtml(val);
+    }
+  })),
+};
+
+// Dynamic import to avoid ES module hoisting execution before mocks are set up
+let performSync, updateSyncUI;
+
+describe("RTS Sync Unit Tests", () => {
+  beforeAll(async () => {
+    const syncModule = await import("../js/sync.js");
+    performSync = syncModule.performSync;
+    updateSyncUI = syncModule.updateSyncUI;
+  });
+  beforeEach(() => {
+    jest.clearAllMocks();
+  });
+
+  test("updateSyncUI updates the DOM container", () => {
+    updateSyncUI("syncing");
+    expect(globalThis.document.getElementById).toHaveBeenCalledWith("sync-status");
+    expect(mockHtml).toHaveBeenCalledWith(expect.stringContaining("Saving to server..."));
+  });
+
+  test("performSync does nothing if exam details are missing", async () => {
+    await performSync(null, {});
+    expect(mockAnswersWhere).not.toHaveBeenCalled();
+  });
+
+  test("performSync processes unsynced answers and marks them as synced", async () => {
+    const examDetails = {
+      aid: "session-123",
+      cid: "9999",
+      eid: "rapid/1",
+      start_time: 1234567,
+      exam_mode: true,
+    };
+    const URLS = {
+      exam_submit_url: "/submit-url",
+    };
+
+    const unsyncedAnswers = [
+      { aid: "session-123", cid: "9999", eid: "rapid/1", qid: 1, qidn: "1", ans: "Normal", synced: false }
+    ];
+
+    mockAnswersWhere.mockReturnValue({
+      filter: mockAnswersFilter.mockReturnValue({
+        toArray: mockAnswersToArray.mockResolvedValue(unsyncedAnswers)
+      })
+    });
+
+    mockAjax.mockImplementation((options) => {
+      if (options.success) {
+        options.success({ success: true });
+      }
+    });
+
+    mockTransaction.mockImplementation(async (mode, tables, cb) => {
+      await cb();
+    });
+
+    await performSync(examDetails, URLS);
+
+    expect(mockAnswersWhere).toHaveBeenCalledWith({
+      aid: examDetails.aid,
+      cid: examDetails.cid,
+      eid: examDetails.eid,
+    });
+    expect(mockAjax).toHaveBeenCalledWith(
+      expect.objectContaining({
+        type: "POST",
+        url: URLS.exam_submit_url,
+        dataType: "json",
+        global: false,
+        data: expect.objectContaining({
+          in_progress: "true",
+        }),
+      })
+    );
+  });
+});