import logging

from django.contrib import admin
from django.contrib.auth.models import Group
from django.urls import reverse
from django.utils.html import mark_safe

from sorl.thumbnail.admin import AdminImageMixin
from sorl.thumbnail.shortcuts import get_thumbnail

from core_images.models import FallbackUrl, LabelImage

logger = logging.getLogger(__name__)


class FallbackUrlAdmin(admin.ModelAdmin):
    search_fields = ("gras_id", "url")
    list_display = ("gras_id", "image_preview")
    list_display_links = ("gras_id", "image_preview")

    def image_preview(self, instance):
        return mark_safe(f'<img src="{instance.url}" height="100"><img>')

    def get_form(self, request, obj=None, change=False, **kwargs):
        form = super().get_form(request, obj, change, **kwargs)
        form.base_fields[
            "url"
        ].widget.template_name = "widgets/url_with_image.html"
        return form


class LabelImageAdmin(AdminImageMixin, admin.ModelAdmin):
    PREVIEW_RESOLUTION = "100x100"

    search_fields = ("label_id",)
    list_display = ("label_id", "image_preview")
    list_display_links = ("label_id", "image_preview")

    def image_preview(self, instance):
        try:
            thumbnail = get_thumbnail(
                instance.image,
                self.PREVIEW_RESOLUTION,
                upscale=False,
                crop=False,
            )
            url = thumbnail.url
        except Exception as e:
            logger.exception(f"Unable to get thumbnail: {e}")
            url = instance.image.url
        return mark_safe(f'<img src="{url}"><img>')


admin.site.register(FallbackUrl, FallbackUrlAdmin)
admin.site.register(LabelImage, LabelImageAdmin)
admin.site.unregister(Group)
admin.site.site_header = "Core Images Service"
admin.site.site_title = admin.site.site_header
admin.site.site_url = reverse("docs")