"""Server-gerenderte Seiten mit Jinja2 + HTMX"""
import logging
from aiohttp import web
import aiohttp_jinja2
from app.config import Config
from app.services.queue import QueueService
from app.services.encoder import EncoderService
from app.models.media import MediaFile


def setup_page_routes(app: web.Application, config: Config,
                      queue_service: QueueService) -> None:
    """Registriert Seiten-Routes"""

    def _build_ws_url(request) -> str:
        """Baut WebSocket-URL fuer den Client"""
        srv = config.server_config
        ext_url = srv.get("external_url", "")
        use_https = srv.get("use_https", False)
        ws_path = srv.get("websocket_path", "/ws")
        protocol = "wss" if use_https else "ws"

        if ext_url:
            return f"{protocol}://{ext_url}{ws_path}"
        return f"{protocol}://{request.host}{ws_path}"

    @aiohttp_jinja2.template("dashboard.html")
    async def dashboard(request: web.Request) -> dict:
        """GET / - Dashboard"""
        return {
            "ws_url": _build_ws_url(request),
            "active_jobs": queue_service.get_active_jobs().get("data_convert", {}),
            "queue": queue_service.get_queue_state().get("data_queue", {}),
        }

    @aiohttp_jinja2.template("admin.html")
    async def admin(request: web.Request) -> dict:
        """GET /admin - Einstellungsseite"""
        gpu_available = EncoderService.detect_gpu_available()
        gpu_devices = EncoderService.get_available_render_devices()
        return {
            "settings": config.settings,
            "presets": config.presets,
            "gpu_available": gpu_available,
            "gpu_devices": gpu_devices,
        }

    @aiohttp_jinja2.template("library.html")
    async def library(request: web.Request) -> dict:
        """GET /library - Bibliothek"""
        return {}

    @aiohttp_jinja2.template("statistics.html")
    async def statistics(request: web.Request) -> dict:
        """GET /statistics - Statistik-Seite"""
        entries = await queue_service.get_statistics(limit=50)
        summary = await queue_service.get_statistics_summary()
        return {
            "entries": entries,
            "summary": summary,
            "format_size": MediaFile.format_size,
            "format_time": MediaFile.format_time,
        }

    # --- HTMX Partials ---

    async def htmx_save_settings(request: web.Request) -> web.Response:
        """POST /htmx/settings - Settings via Formular speichern"""
        data = await request.post()

        # Formular-Daten in Settings-Struktur konvertieren
        settings = config.settings

        # Encoding
        settings["encoding"]["mode"] = data.get("encoding_mode", "cpu")
        settings["encoding"]["gpu_device"] = data.get("gpu_device",
                                                       "/dev/dri/renderD128")
        settings["encoding"]["default_preset"] = data.get("default_preset",
                                                           "cpu_av1")
        settings["encoding"]["max_parallel_jobs"] = int(
            data.get("max_parallel_jobs", 1)
        )

        # Files
        settings["files"]["target_container"] = data.get("target_container", "webm")
        settings["files"]["target_folder"] = data.get("target_folder", "same")
        settings["files"]["delete_source"] = data.get("delete_source") == "on"
        settings["files"]["recursive_scan"] = data.get("recursive_scan") == "on"

        # Cleanup
        settings["cleanup"]["enabled"] = data.get("cleanup_enabled") == "on"
        cleanup_ext = data.get("cleanup_extensions", "")
        if cleanup_ext:
            settings["cleanup"]["delete_extensions"] = [
                e.strip() for e in cleanup_ext.split(",") if e.strip()
            ]
        exclude_pat = data.get("cleanup_exclude", "")
        if exclude_pat:
            settings["cleanup"]["exclude_patterns"] = [
                p.strip() for p in exclude_pat.split(",") if p.strip()
            ]

        # Audio
        audio_langs = data.get("audio_languages", "ger,eng,und")
        settings["audio"]["languages"] = [
            l.strip() for l in audio_langs.split(",") if l.strip()
        ]
        settings["audio"]["default_codec"] = data.get("audio_codec", "libopus")
        settings["audio"]["keep_channels"] = data.get("keep_channels") == "on"

        # Subtitle
        sub_langs = data.get("subtitle_languages", "ger,eng")
        settings["subtitle"]["languages"] = [
            l.strip() for l in sub_langs.split(",") if l.strip()
        ]

        # Logging
        settings["logging"]["level"] = data.get("log_level", "INFO")

        # Bibliothek / TVDB
        settings.setdefault("library", {})
        settings["library"]["tvdb_api_key"] = data.get("tvdb_api_key", "")
        settings["library"]["tvdb_pin"] = data.get("tvdb_pin", "")
        settings["library"]["tvdb_language"] = data.get("tvdb_language", "deu")

        config.save_settings()
        logging.info("Settings via Admin-UI gespeichert")

        # Erfolgs-HTML zurueckgeben (HTMX swap)
        return web.Response(
            text='<div class="toast success">Settings gespeichert!</div>',
            content_type="text/html",
        )

    @aiohttp_jinja2.template("partials/stats_table.html")
    async def htmx_stats_table(request: web.Request) -> dict:
        """GET /htmx/stats?page=1 - Paginierte Statistik"""
        page = int(request.query.get("page", 1))
        limit = 25
        offset = (page - 1) * limit
        entries = await queue_service.get_statistics(limit, offset)
        return {
            "entries": entries,
            "page": page,
            "format_size": MediaFile.format_size,
            "format_time": MediaFile.format_time,
        }

    async def redirect_to_library(request: web.Request):
        """GET / -> Weiterleitung zur Bibliothek"""
        raise web.HTTPFound("/library")

    # Routes registrieren
    app.router.add_get("/", redirect_to_library)
    app.router.add_get("/dashboard", dashboard)
    app.router.add_get("/library", library)
    app.router.add_get("/admin", admin)
    app.router.add_get("/statistics", statistics)
    app.router.add_post("/htmx/settings", htmx_save_settings)
    app.router.add_get("/htmx/stats", htmx_stats_table)