lemoncurry/wellknowns/views/manifest.py

from django.http import JsonResponse
from django.urls import reverse
from ..favicons import icons
from lemoncurry import utils
from lemoncurry.theme import color
from urllib.parse import urljoin
from textwrap import shorten


def manifest_icons(base):
    return [
        {"src": i.url, "type": i.mime, "sizes": i.sizes}
        for i in sorted(icons, key=lambda i: i.size)
    ]


def manifest(request):
    base = utils.origin(request)
    start_url = reverse("home:index") + "?utm_source=homescreen"

    app = {
        "name": request.site.name,
        "short_name": shorten(request.site.name, width=20, placeholder=""),
        "icons": manifest_icons(base),
        "display": "browser",
        "start_url": urljoin(base, start_url),
        "background_color": color(0),
        "theme_color": color(3),
    }

    return JsonResponse(app, content_type="application/manifest+json")