"""Account pages blueprint.

Moved from federation/bp/auth — newsletters, fragment pages (tickets, bookings).
Mounted at root /.
"""
from __future__ import annotations

from quart import (
    Blueprint,
    request,
    make_response,
    redirect,
    g,
)
from sqlalchemy import select

from shared.models import UserNewsletter
from shared.models.ghost_membership_entities import GhostNewsletter
from shared.infrastructure.urls import login_url
from shared.infrastructure.fragments import fetch_fragment, fetch_fragments
from shared.sexp.helpers import sexp_response

oob = {
    "oob_extends": "oob_elements.html",
    "extends": "_types/root/_index.html",
    "parent_id": "root-header-child",
    "child_id": "auth-header-child",
    "header": "_types/auth/header/_header.html",
    "parent_header": "_types/root/header/_header.html",
    "nav": "_types/auth/_nav.html",
    "main": "_types/auth/_main_panel.html",
}


def register(url_prefix="/"):
    account_bp = Blueprint("account", __name__, url_prefix=url_prefix)

    @account_bp.context_processor
    async def context():
        events_nav, cart_nav, artdag_nav = await fetch_fragments([
            ("events", "account-nav-item", {}),
            ("cart", "account-nav-item", {}),
            ("artdag", "nav-item", {}),
        ], required=False)
        return {"oob": oob, "account_nav": events_nav + cart_nav + artdag_nav}

    @account_bp.get("/")
    async def account():
        from shared.browser.app.utils.htmx import is_htmx_request
        from shared.sexp.page import get_template_context
        from sexp.sexp_components import render_account_page, render_account_oob

        if not g.get("user"):
            return redirect(login_url("/"))

        ctx = await get_template_context()
        if not is_htmx_request():
            html = await render_account_page(ctx)
            return await make_response(html)
        else:
            sexp_src = await render_account_oob(ctx)
            return sexp_response(sexp_src)

    @account_bp.get("/newsletters/")
    async def newsletters():
        from shared.browser.app.utils.htmx import is_htmx_request

        if not g.get("user"):
            return redirect(login_url("/newsletters/"))

        result = await g.s.execute(
            select(GhostNewsletter).order_by(GhostNewsletter.name)
        )
        all_newsletters = result.scalars().all()

        sub_result = await g.s.execute(
            select(UserNewsletter).where(
                UserNewsletter.user_id == g.user.id,
            )
        )
        user_subs = {un.newsletter_id: un for un in sub_result.scalars().all()}

        newsletter_list = []
        for nl in all_newsletters:
            un = user_subs.get(nl.id)
            newsletter_list.append({
                "newsletter": nl,
                "un": un,
                "subscribed": un.subscribed if un else False,
            })

        from shared.sexp.page import get_template_context
        from sexp.sexp_components import render_newsletters_page, render_newsletters_oob

        ctx = await get_template_context()
        if not is_htmx_request():
            html = await render_newsletters_page(ctx, newsletter_list)
            return await make_response(html)
        else:
            sexp_src = await render_newsletters_oob(ctx, newsletter_list)
            return sexp_response(sexp_src)

    @account_bp.post("/newsletter/<int:newsletter_id>/toggle/")
    async def toggle_newsletter(newsletter_id: int):
        if not g.get("user"):
            return "", 401

        result = await g.s.execute(
            select(UserNewsletter).where(
                UserNewsletter.user_id == g.user.id,
                UserNewsletter.newsletter_id == newsletter_id,
            )
        )
        un = result.scalar_one_or_none()

        if un:
            un.subscribed = not un.subscribed
        else:
            un = UserNewsletter(
                user_id=g.user.id,
                newsletter_id=newsletter_id,
                subscribed=True,
            )
            g.s.add(un)

        await g.s.flush()

        from sexp.sexp_components import render_newsletter_toggle
        return sexp_response(render_newsletter_toggle(un))

    # Catch-all for fragment-provided pages — must be last
    @account_bp.get("/<slug>/")
    async def fragment_page(slug):
        from shared.browser.app.utils.htmx import is_htmx_request
        from quart import abort

        if not g.get("user"):
            return redirect(login_url(f"/{slug}/"))

        fragment_html = await fetch_fragment(
            "events", "account-page",
            params={"slug": slug, "user_id": str(g.user.id)},
        )
        if not fragment_html:
            abort(404)

        from shared.sexp.page import get_template_context
        from sexp.sexp_components import render_fragment_page, render_fragment_oob

        ctx = await get_template_context()
        if not is_htmx_request():
            html = await render_fragment_page(ctx, fragment_html)
            return await make_response(html)
        else:
            sexp_src = await render_fragment_oob(ctx, fragment_html)
            return sexp_response(sexp_src)

    return account_bp