"""
Page-markets blueprint — shows markets for a single page.

Mounted at /<slug> (page-scoped). Requires g.post_data from hydrate_post.

Routes:
  GET  /<slug>/              — full page scoped to this page
  GET  /<slug>/page-markets  — 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.services.registry import services


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

    async def _load_markets(post_id, page, per_page=20):
        """Load markets for this page's container."""
        markets, has_more = await services.market.list_marketplaces(
            g.s, "page", post_id, page=page, per_page=per_page,
        )
        return markets, has_more

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

        markets, has_more = await _load_markets(post["id"], page)

        ctx = dict(
            markets=markets,
            has_more=has_more,
            page_info={},
            page=page,
        )

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

        return await make_response(html, 200)

    @bp.get("/page-markets")
    async def markets_fragment():
        post = g.post_data["post"]
        page = int(request.args.get("page", 1))

        markets, has_more = await _load_markets(post["id"], page)

        html = await render_template(
            "_types/page_markets/_cards.html",
            markets=markets,
            has_more=has_more,
            page_info={},
            page=page,
        )
        return await make_response(html, 200)

    return bp