"""
Service-specific page context IO handlers.

These are application-specific (rose-ash), not part of the generic SX
framework. Each handler builds a dict of template data from Quart request
context for use by .sx page components.
"""
from __future__ import annotations

from typing import Any

from .primitives_io import register_io_handler


# ---------------------------------------------------------------------------
# Root / post headers
# ---------------------------------------------------------------------------

@register_io_handler("root-header-ctx")
async def _io_root_header_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(root-header-ctx)`` → dict with all root header values.

    Fetches cart-mini, auth-menu, nav-tree fragments and computes
    settings-url / is-admin from rights.  Result is cached on ``g``
    per request so multiple calls (e.g. header + mobile) are free.
    """
    from quart import g, current_app, request
    cached = getattr(g, "_root_header_ctx", None)
    if cached is not None:
        return cached

    from shared.infrastructure.fragments import fetch_fragments
    from shared.infrastructure.cart_identity import current_cart_identity
    from shared.infrastructure.urls import app_url
    from shared.config import config
    from .types import NIL

    user = getattr(g, "user", None)
    ident = current_cart_identity()

    cart_params: dict[str, Any] = {}
    if ident["user_id"] is not None:
        cart_params["user_id"] = ident["user_id"]
    if ident["session_id"] is not None:
        cart_params["session_id"] = ident["session_id"]

    auth_params: dict[str, Any] = {}
    if user and getattr(user, "email", None):
        auth_params["email"] = user.email

    nav_params = {"app_name": current_app.name, "path": request.path}

    cart_mini, auth_menu, nav_tree = await fetch_fragments([
        ("cart", "cart-mini", cart_params or None),
        ("account", "auth-menu", auth_params or None),
        ("blog", "nav-tree", nav_params),
    ])

    rights = getattr(g, "rights", None) or {}
    is_admin = (
        rights.get("admin", False)
        if isinstance(rights, dict)
        else getattr(rights, "admin", False)
    )

    result = {
        "cart-mini": cart_mini or NIL,
        "blog-url": app_url("blog", ""),
        "site-title": config()["title"],
        "app-label": current_app.name,
        "nav-tree": nav_tree or NIL,
        "auth-menu": auth_menu or NIL,
        "nav-panel": NIL,
        "settings-url": app_url("blog", "/settings/") if is_admin else "",
        "is-admin": is_admin,
    }
    g._root_header_ctx = result
    return result


@register_io_handler("post-header-ctx")
async def _io_post_header_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(post-header-ctx)`` → dict with post-level header values."""
    from quart import g, request
    cached = getattr(g, "_post_header_ctx", None)
    if cached is not None:
        return cached

    from shared.infrastructure.urls import app_url
    from .types import NIL
    from .parser import SxExpr

    dctx = getattr(g, "_defpage_ctx", None) or {}
    post = dctx.get("post") or {}
    slug = post.get("slug", "")
    if not slug:
        result: dict[str, Any] = {"slug": ""}
        g._post_header_ctx = result
        return result

    title = (post.get("title") or "")[:160]
    feature_image = post.get("feature_image") or NIL

    # Container nav (pre-fetched by page helper into defpage ctx)
    raw_nav = dctx.get("container_nav") or ""
    container_nav: Any = NIL
    nav_str = str(raw_nav).strip()
    if nav_str and nav_str.replace("(<>", "").replace(")", "").strip():
        if isinstance(raw_nav, SxExpr):
            container_nav = raw_nav
        else:
            container_nav = SxExpr(nav_str)

    page_cart_count = dctx.get("page_cart_count", 0) or 0

    rights = getattr(g, "rights", None) or {}
    is_admin = (
        rights.get("admin", False)
        if isinstance(rights, dict)
        else getattr(rights, "admin", False)
    )

    is_admin_page = dctx.get("is_admin_section") or "/admin" in request.path

    from quart import current_app
    select_colours = current_app.jinja_env.globals.get("select_colours", "")

    result = {
        "slug": slug,
        "title": title,
        "feature-image": feature_image,
        "link-href": app_url("blog", f"/{slug}/"),
        "container-nav": container_nav,
        "page-cart-count": page_cart_count,
        "cart-href": app_url("cart", f"/{slug}/") if page_cart_count else "",
        "admin-href": app_url("blog", f"/{slug}/admin/"),
        "is-admin": is_admin,
        "is-admin-page": is_admin_page or NIL,
        "select-colours": select_colours,
    }
    g._post_header_ctx = result
    return result


# ---------------------------------------------------------------------------
# Cart
# ---------------------------------------------------------------------------

@register_io_handler("cart-page-ctx")
async def _io_cart_page_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(cart-page-ctx)`` → dict with cart page header values."""
    from quart import g
    from .types import NIL
    from shared.infrastructure.urls import app_url

    page_post = getattr(g, "page_post", None)
    if not page_post:
        return {"slug": "", "title": "", "feature-image": NIL, "cart-url": "/"}

    slug = getattr(page_post, "slug", "") or ""
    title = (getattr(page_post, "title", "") or "")[:160]
    feature_image = getattr(page_post, "feature_image", None) or NIL

    return {
        "slug": slug,
        "title": title,
        "feature-image": feature_image,
        "page-cart-url": app_url("cart", f"/{slug}/"),
        "cart-url": app_url("cart", "/"),
    }


# ---------------------------------------------------------------------------
# Events
# ---------------------------------------------------------------------------

@register_io_handler("events-calendar-ctx")
async def _io_events_calendar_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(events-calendar-ctx)`` → dict with events calendar header values."""
    from quart import g
    cal = getattr(g, "calendar", None)
    if not cal:
        dctx = getattr(g, "_defpage_ctx", None) or {}
        cal = dctx.get("calendar")
    if not cal:
        return {"slug": ""}
    return {
        "slug": getattr(cal, "slug", "") or "",
        "name": getattr(cal, "name", "") or "",
        "description": getattr(cal, "description", "") or "",
    }


@register_io_handler("events-day-ctx")
async def _io_events_day_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(events-day-ctx)`` → dict with events day header values."""
    from quart import g, url_for
    from .types import NIL
    from .parser import SxExpr

    dctx = getattr(g, "_defpage_ctx", None) or {}
    cal = getattr(g, "calendar", None) or dctx.get("calendar")
    day_date = dctx.get("day_date") or getattr(g, "day_date", None)
    if not cal or not day_date:
        return {"date-str": ""}

    cal_slug = getattr(cal, "slug", "") or ""

    # Build confirmed entries nav
    confirmed = dctx.get("confirmed_entries") or []
    rights = getattr(g, "rights", None) or {}
    is_admin = (
        rights.get("admin", False)
        if isinstance(rights, dict)
        else getattr(rights, "admin", False)
    )

    from .helpers import sx_call
    nav_parts: list[str] = []
    if confirmed:
        entry_links = []
        for entry in confirmed:
            href = url_for(
                "calendar.day.calendar_entries.calendar_entry.get",
                calendar_slug=cal_slug,
                year=day_date.year, month=day_date.month, day=day_date.day,
                entry_id=entry.id,
            )
            start = entry.start_at.strftime("%H:%M") if entry.start_at else ""
            end = (
                f" \u2013 {entry.end_at.strftime('%H:%M')}"
                if entry.end_at else ""
            )
            entry_links.append(sx_call(
                "events-day-entry-link",
                href=href, name=entry.name, time_str=f"{start}{end}",
            ))
        inner = "".join(entry_links)
        nav_parts.append(sx_call(
            "events-day-entries-nav", inner=SxExpr(inner),
        ))

    if is_admin and day_date:
        admin_href = url_for(
            "defpage_day_admin", calendar_slug=cal_slug,
            year=day_date.year, month=day_date.month, day=day_date.day,
        )
        nav_parts.append(sx_call("nav-link", href=admin_href, icon="fa fa-cog"))

    return {
        "date-str": day_date.strftime("%A %d %B %Y"),
        "year": day_date.year,
        "month": day_date.month,
        "day": day_date.day,
        "nav": SxExpr("".join(nav_parts)) if nav_parts else NIL,
    }


@register_io_handler("events-entry-ctx")
async def _io_events_entry_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(events-entry-ctx)`` → dict with events entry header values."""
    from quart import g, url_for
    from .types import NIL
    from .parser import SxExpr

    dctx = getattr(g, "_defpage_ctx", None) or {}
    cal = getattr(g, "calendar", None) or dctx.get("calendar")
    entry = getattr(g, "entry", None) or dctx.get("entry")
    if not cal or not entry:
        return {"id": ""}

    cal_slug = getattr(cal, "slug", "") or ""
    day = dctx.get("day")
    month = dctx.get("month")
    year = dctx.get("year")

    # Times
    start = entry.start_at
    end = entry.end_at
    time_str = ""
    if start:
        time_str = start.strftime("%H:%M")
        if end:
            time_str += f" \u2192 {end.strftime('%H:%M')}"

    link_href = url_for(
        "calendar.day.calendar_entries.calendar_entry.get",
        calendar_slug=cal_slug,
        year=year, month=month, day=day, entry_id=entry.id,
    )

    # Build nav: associated posts + admin link
    entry_posts = dctx.get("entry_posts") or []
    rights = getattr(g, "rights", None) or {}
    is_admin = (
        rights.get("admin", False)
        if isinstance(rights, dict)
        else getattr(rights, "admin", False)
    )

    from .helpers import sx_call
    from shared.infrastructure.urls import app_url

    nav_parts: list[str] = []
    if entry_posts:
        post_links = ""
        for ep in entry_posts:
            ep_slug = getattr(ep, "slug", "")
            ep_title = getattr(ep, "title", "")
            feat = getattr(ep, "feature_image", None)
            href = app_url("blog", f"/{ep_slug}/")
            if feat:
                img_html = sx_call("events-post-img", src=feat, alt=ep_title)
            else:
                img_html = sx_call("events-post-img-placeholder")
            post_links += sx_call(
                "events-entry-nav-post-link",
                href=href, img=SxExpr(img_html), title=ep_title,
            )
        nav_parts.append(
            sx_call("events-entry-posts-nav-oob", items=SxExpr(post_links))
            .replace(' :hx-swap-oob "true"', '')
        )

    if is_admin:
        admin_url = url_for(
            "calendar.day.calendar_entries.calendar_entry.admin.admin",
            calendar_slug=cal_slug,
            day=day, month=month, year=year, entry_id=entry.id,
        )
        nav_parts.append(sx_call("events-entry-admin-link", href=admin_url))

    # Entry admin nav (ticket_types link)
    admin_href = url_for(
        "calendar.day.calendar_entries.calendar_entry.admin.admin",
        calendar_slug=cal_slug,
        day=day, month=month, year=year, entry_id=entry.id,
    ) if is_admin else ""

    ticket_types_href = url_for(
        "calendar.day.calendar_entries.calendar_entry.ticket_types.get",
        calendar_slug=cal_slug, entry_id=entry.id,
        year=year, month=month, day=day,
    )

    from quart import current_app
    select_colours = current_app.jinja_env.globals.get("select_colours", "")

    return {
        "id": str(entry.id),
        "name": entry.name or "",
        "time-str": time_str,
        "link-href": link_href,
        "nav": SxExpr("".join(nav_parts)) if nav_parts else NIL,
        "admin-href": admin_href,
        "ticket-types-href": ticket_types_href,
        "is-admin": is_admin,
        "select-colours": select_colours,
    }


@register_io_handler("events-slot-ctx")
async def _io_events_slot_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(events-slot-ctx)`` → dict with events slot header values."""
    from quart import g
    dctx = getattr(g, "_defpage_ctx", None) or {}
    slot = getattr(g, "slot", None) or dctx.get("slot")
    if not slot:
        return {"name": ""}
    return {
        "name": getattr(slot, "name", "") or "",
        "description": getattr(slot, "description", "") or "",
    }


@register_io_handler("events-ticket-type-ctx")
async def _io_events_ticket_type_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(events-ticket-type-ctx)`` → dict with ticket type header values."""
    from quart import g, url_for

    dctx = getattr(g, "_defpage_ctx", None) or {}
    cal = getattr(g, "calendar", None) or dctx.get("calendar")
    entry = getattr(g, "entry", None) or dctx.get("entry")
    ticket_type = getattr(g, "ticket_type", None) or dctx.get("ticket_type")
    if not cal or not entry or not ticket_type:
        return {"id": ""}

    cal_slug = getattr(cal, "slug", "") or ""
    day = dctx.get("day")
    month = dctx.get("month")
    year = dctx.get("year")

    link_href = url_for(
        "calendar.day.calendar_entries.calendar_entry.ticket_types.ticket_type.get",
        calendar_slug=cal_slug, year=year, month=month, day=day,
        entry_id=entry.id, ticket_type_id=ticket_type.id,
    )

    return {
        "id": str(ticket_type.id),
        "name": getattr(ticket_type, "name", "") or "",
        "link-href": link_href,
    }


# ---------------------------------------------------------------------------
# Market
# ---------------------------------------------------------------------------

@register_io_handler("market-header-ctx")
async def _io_market_header_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(market-header-ctx)`` → dict with market header data."""
    from quart import g, url_for
    from shared.config import config as get_config
    from .parser import SxExpr

    cfg = get_config()
    market_title = cfg.get("market_title", "")
    link_href = url_for("defpage_market_home")

    # Get categories if market is loaded
    market = getattr(g, "market", None)
    categories = {}
    if market:
        from bp.browse.services.nav import get_nav
        nav_data = await get_nav(g.s, market_id=market.id)
        categories = nav_data.get("cats", {})

    # Build minimal ctx for existing helper functions
    select_colours = getattr(g, "select_colours", "")
    if not select_colours:
        from quart import current_app
        select_colours = current_app.jinja_env.globals.get("select_colours", "")
    rights = getattr(g, "rights", None) or {}

    mini_ctx: dict[str, Any] = {
        "market_title": market_title,
        "top_slug": "",
        "sub_slug": "",
        "categories": categories,
        "qs": "",
        "hx_select_search": "#main-panel",
        "select_colours": select_colours,
        "rights": rights,
        "category_label": "",
    }

    # Build header + mobile nav data via new data-driven helpers
    from sxc.pages.layouts import _market_header_data, _mobile_nav_panel_sx
    header_data = _market_header_data(mini_ctx)
    mobile_nav = _mobile_nav_panel_sx(mini_ctx)

    return {
        "market-title": market_title,
        "link-href": link_href,
        "top-slug": "",
        "sub-slug": "",
        "categories": header_data.get("categories", []),
        "hx-select": header_data.get("hx-select", "#main-panel"),
        "select-colours": header_data.get("select-colours", ""),
        "all-href": header_data.get("all-href", ""),
        "all-active": header_data.get("all-active", False),
        "admin-href": header_data.get("admin-href", ""),
        "mobile-nav": SxExpr(mobile_nav) if mobile_nav else "",
    }


# ---------------------------------------------------------------------------
# Federation
# ---------------------------------------------------------------------------

@register_io_handler("federation-actor-ctx")
async def _io_federation_actor_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any] | None:
    """``(federation-actor-ctx)`` → serialized actor dict or None."""
    from quart import g
    actor = getattr(g, "_social_actor", None)
    if not actor:
        return None
    return {
        "id": actor.id,
        "preferred_username": actor.preferred_username,
        "display_name": getattr(actor, "display_name", None),
        "icon_url": getattr(actor, "icon_url", None),
        "actor_url": getattr(actor, "actor_url", ""),
    }


# ---------------------------------------------------------------------------
# Misc UI contexts
# ---------------------------------------------------------------------------

@register_io_handler("select-colours")
async def _io_select_colours(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> str:
    """``(select-colours)`` → the shared select/hover CSS class string."""
    from quart import current_app
    return current_app.jinja_env.globals.get("select_colours", "")


@register_io_handler("account-nav-ctx")
async def _io_account_nav_ctx(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> Any:
    """``(account-nav-ctx)`` → account nav fragments as SxExpr, or NIL."""
    from quart import g
    from .types import NIL
    from .parser import SxExpr
    from .helpers import sx_call
    val = getattr(g, "account_nav", None)
    if not val:
        return NIL
    if isinstance(val, SxExpr):
        return val
    return sx_call("rich-text", html=str(val))


@register_io_handler("app-rights")
async def _io_app_rights(
    args: list[Any], kwargs: dict[str, Any], ctx: Any
) -> dict[str, Any]:
    """``(app-rights)`` → user rights dict from ``g.rights``."""
    from quart import g
    return getattr(g, "rights", None) or {}
