import django_tables2 as tables
from django_tables2.utils import A

from .models import Long, LongSeries, UserAnswer

from django.utils.html import format_html

from easy_thumbnails.files import get_thumbnailer

from easy_thumbnails.exceptions import InvalidImageFormatError


class LongImageColumn(tables.Column):
    def render(self, value):
        blocks =[]
        for obj in value.all():
            blocks.append(obj.get_block())
        return format_html("<span class='multi-image-block'>{}</span>".format("".join(blocks)))

        obj = value.first()

        if obj is None:
            return format_html("<span>No image<span>")

        return obj.get_thumbnail()[0]

        # image_object = obj.image
        # try:
        #    thumbnailer = get_thumbnailer(image_object)
        #    return format_html('<img src="/media/{}" />', thumbnailer["exam-list"])
        # except InvalidImageFormatError:
        #    return format_html('<span title="{}">Invalid image url<span>', image_object)


class LongSeriesImageColumn(tables.Column):
    def render(self, value):
        obj = value.all()

        if not obj:
            return "None"

        image_object = obj[0].image
        try:
            thumbnailer = get_thumbnailer(image_object)
            return format_html('<img src="/media/{}" /><br/>[{}]', thumbnailer["exam-list"], value.count())
        except InvalidImageFormatError:
            return format_html('<span title="{}">Invalid image url<span><br/>[{}]', image_object, value.count())


class LongTable(tables.Table):
    edit = tables.LinkColumn(
        "longs:long_update", text="Edit", args=[A("pk")], orderable=False
    )
    view = tables.LinkColumn(
        "longs:question_detail", text="View", args=[A("pk")], orderable=False
    )
    clone = tables.LinkColumn(
        "longs:long_clone", text="Clone", args=[A("pk")], orderable=False
    )
    delete = tables.LinkColumn(
        "longs:long_delete", text="Delete", args=[A("pk")], orderable=False
    )
    series = LongImageColumn("Images", orderable=False)

    #series = tables.ManyToManyColumn(verbose_name="Exams")
    exams = tables.ManyToManyColumn(verbose_name="Exams")

    selection = tables.CheckBoxColumn(accessor="pk", orderable=False)

    class Meta:
        model = Long
        template_name = "django_tables2/bootstrap4.html"
        fields = ("description", "history", "created_date", "author")
        sequence = ("view", "series", "exams")

    def __init__(self, data=None, *args, **kwargs):
        super().__init__(
            data.prefetch_related(
                "series", "author", "exams", "series__images", "series__examination", "series__plane", "series__contrast"
            ),
            *args,
            **kwargs,
        )

class PopupLinkColumn(tables.Column):
    def render(self, value):
        return format_html("<span>test: {}<span>", value)
        obj = value.first()

        if obj is None:
            return format_html("<span>No image<span>")

        return obj.get_thumbnail()[0]


class LongSeriesTable(tables.Table):
    edit = tables.LinkColumn(
        "longs:long_series_update", text="Edit", args=[A("pk")], orderable=False
    )
    view = tables.LinkColumn(
        "longs:long_series_detail", text="View", args=[A("pk")], orderable=False
    )
    popup = tables.Column(empty_values=(), orderable=False)

    images = LongSeriesImageColumn("Images", orderable=False)

    delete = tables.LinkColumn(
        "longs:long_series_delete", text="Delete", args=[A("pk")], orderable=False
    )
    selection = tables.CheckBoxColumn(accessor="pk", orderable=False)

    long = tables.ManyToManyColumn(verbose_name="Question")

    class Meta:
        model = LongSeries
        template_name = "django_tables2/bootstrap4.html"
        fields = ("modality", "examination", "description", "author")
        sequence = ("view", "popup", "images", "long")

    def __init__(self, data=None, *args, **kwargs):
        super().__init__(
            data.prefetch_related(
                "long", "long__series", "images", "author", "examination", "plane", "contrast", "modality"
            ),
            *args,
            **kwargs,
        )

    def render_popup(self, value, record):
        print(self)
        return format_html("""<a href="#" onclick="return window.create_popup_window('/longs/series/{}', 'Series')" >Popup</a>""", record.pk)

class UserAnswerTable(tables.Table):
    select = tables.CheckBoxColumn(accessor=("pk"))
    delete = tables.LinkColumn(
        "longs:user_answer_delete", text="Delete", args=[A("pk")], orderable=False
    )
    view = tables.LinkColumn('longs:user_answer_view',
                             text='View',
                             args=[A('pk')],
                             orderable=False)
    class Meta:
        model = UserAnswer
        template_name = "django_tables2/bootstrap4.html"
        fields = (
            "cid",
            "question",
            "score",
            #"normal",
            #"answer",
            #"answer_compare",
            "exam",
            "created",
            "updated",
        )