"""
Page summary blueprint — shows upcoming events across all calendars
for a container (e.g. the village hall).

Routes:
  GET /<slug>/          — full page with first page of entries
  GET /<slug>/entries   — HTMX fragment for infinite scroll
"""
from __future__ import annotations

from quart import Blueprint, g, request, render_template, make_response

from shared.browser.app.utils.htmx import is_htmx_request
from shared.infrastructure.cart_identity import current_cart_identity
from shared.services.registry import services


def register() -> Blueprint:
    bp = Blueprint("page_summary", __name__)

    async def _load_entries(post_id, page, per_page=20):
        """Load upcoming entries + pending ticket counts for current user."""
        entries, has_more = await services.calendar.upcoming_entries_for_container(
            g.s, "page", post_id, page=page, per_page=per_page,
        )

        # Pending ticket counts keyed by entry_id
        ident = current_cart_identity()
        pending_tickets = {}
        if entries:
            tickets = await services.calendar.pending_tickets(
                g.s, user_id=ident["user_id"], session_id=ident["session_id"],
            )
            for t in tickets:
                if t.entry_id is not None:
                    pending_tickets[t.entry_id] = pending_tickets.get(t.entry_id, 0) + 1

        return entries, has_more, pending_tickets

    @bp.get("/")
    async def index():
        post = g.post_data["post"]
        view = request.args.get("view", "list")
        page = int(request.args.get("page", 1))

        entries, has_more, pending_tickets = await _load_entries(post["id"], page)

        ctx = dict(
            entries=entries,
            has_more=has_more,
            pending_tickets=pending_tickets,
            page=page,
            view=view,
        )

        if is_htmx_request():
            html = await render_template("_types/page_summary/_main_panel.html", **ctx)
        else:
            html = await render_template("_types/page_summary/index.html", **ctx)

        return await make_response(html, 200)

    @bp.get("/entries")
    async def entries_fragment():
        post = g.post_data["post"]
        view = request.args.get("view", "list")
        page = int(request.args.get("page", 1))

        entries, has_more, pending_tickets = await _load_entries(post["id"], page)

        html = await render_template(
            "_types/page_summary/_cards.html",
            entries=entries,
            has_more=has_more,
            pending_tickets=pending_tickets,
            page=page,
            view=view,
        )
        return await make_response(html, 200)

    return bp