"""Frontend registration for Wall Panel."""

from __future__ import annotations

import time
from pathlib import Path

from homeassistant.components.frontend import async_register_built_in_panel
from homeassistant.components.http import StaticPathConfig
from homeassistant.core import HomeAssistant

from .const import (
    CONF_FRONTEND_URL_PATH,
    CONF_PANEL_URL,
    CONF_REQUIRE_ADMIN,
    CONF_SIDEBAR_ICON,
    CONF_SIDEBAR_TITLE,
    CONF_SYNC_TOKEN,
    DEFAULT_FRONTEND_URL_PATH,
    DEFAULT_SIDEBAR_ICON,
    DEFAULT_SIDEBAR_TITLE,
    DOMAIN,
)
from .helpers import current_entry_config


def _panel_url_path(entry) -> str:
    raw = str(entry.options.get(CONF_FRONTEND_URL_PATH, DEFAULT_FRONTEND_URL_PATH) or DEFAULT_FRONTEND_URL_PATH).strip()
    if raw in {"", "wall-panel"}:
        return DEFAULT_FRONTEND_URL_PATH
    return raw


async def async_setup_frontend(hass: HomeAssistant, entry) -> str:
    """Register the custom panel and static frontend assets."""

    frontend_dir = Path(__file__).parent / "frontend"
    # Bundle the HA-native assets inside the component so the integration
    # does not depend on files living in the root of /config.
    assets_dir = Path(__file__).parent / "assets"
    state = hass.data.setdefault(DOMAIN, {})
    if not state.get("_static_paths_registered"):
        await hass.http.async_register_static_paths([
            StaticPathConfig(
                f"/api/{DOMAIN}/frontend",
                str(frontend_dir),
                cache_headers=False,
            ),
            StaticPathConfig(
                f"/api/{DOMAIN}/assets",
                str(assets_dir),
                cache_headers=False,
            ),
        ])
        state["_static_paths_registered"] = True

    panel_url_path = _panel_url_path(entry)
    sidebar_title = str(entry.options.get(CONF_SIDEBAR_TITLE, DEFAULT_SIDEBAR_TITLE) or DEFAULT_SIDEBAR_TITLE).strip()
    sidebar_icon = str(entry.options.get(CONF_SIDEBAR_ICON, DEFAULT_SIDEBAR_ICON) or DEFAULT_SIDEBAR_ICON).strip()
    require_admin = bool(entry.options.get(CONF_REQUIRE_ADMIN, False))
    sync_token = str(entry.options.get(CONF_SYNC_TOKEN, "") or "").strip()
    asset_version = str(int(time.time()))
    runtime_config = current_entry_config(entry)

    async_register_built_in_panel(
        hass,
        component_name="custom",
        sidebar_title=sidebar_title,
        sidebar_icon=sidebar_icon,
        frontend_url_path=panel_url_path,
        config={
            "_panel_custom": {
                "name": "striker-panel-panel",
                "module_url": f"/api/{DOMAIN}/frontend/panel.js?v={asset_version}",
                "config": {
                    "runtime_config": runtime_config,
                    "ui_mode": "ha-native",
                    "entry_id": entry.entry_id,
                    "sync_token": sync_token,
                    "config_url": f"/api/{DOMAIN}/config/{entry.entry_id}",
                },
            }
        },
        require_admin=require_admin,
        update=True,
    )

    return panel_url_path