import os
from pathlib import Path
from typing import Literal

from pydantic import BaseModel, Field, PrivateAttr, computed_field

from ...libs.media_api.types import MediaSort, UserMediaListSort
from ...libs.provider.anime.types import ProviderName, ProviderServer
from ..constants import APP_ASCII_ART
from . import defaults
from . import descriptions as desc


class GeneralConfig(BaseModel):
    """Configuration for general application behavior and integrations."""

    pygment_style: str = Field(
        default=defaults.GENERAL_PYGMENT_STYLE, description=desc.GENERAL_PYGMENT_STYLE
    )
    media_api: Literal["anilist", "jikan"] = Field(
        default=defaults.GENERAL_API_CLIENT,
        description=desc.GENERAL_API_CLIENT,
    )
    provider: ProviderName = Field(
        default=ProviderName.ALLANIME,
        description=desc.GENERAL_PROVIDER,
    )
    selector: Literal["default", "fzf", "rofi"] = Field(
        default=defaults.GENERAL_SELECTOR,
        description=desc.GENERAL_SELECTOR,
    )
    auto_select_anime_result: bool = Field(
        default=defaults.GENERAL_AUTO_SELECT_ANIME_RESULT,
        description=desc.GENERAL_AUTO_SELECT_ANIME_RESULT,
    )
    icons: bool = Field(default=defaults.GENERAL_ICONS, description=desc.GENERAL_ICONS)
    preview: Literal["full", "text", "image", "none"] = Field(
        default=defaults.GENERAL_PREVIEW,
        description=desc.GENERAL_PREVIEW,
    )
    image_renderer: Literal["icat", "chafa", "imgcat"] = Field(
        default="icat"
        if os.environ.get("KITTY_WINDOW_ID")
        else defaults.GENERAL_IMAGE_RENDERER,
        description=desc.GENERAL_IMAGE_RENDERER,
    )
    manga_viewer: Literal["feh", "icat"] = Field(
        default=defaults.GENERAL_MANGA_VIEWER,
        description=desc.GENERAL_MANGA_VIEWER,
    )
    check_for_updates: bool = Field(
        default=defaults.GENERAL_CHECK_FOR_UPDATES,
        description=desc.GENERAL_CHECK_FOR_UPDATES,
    )
    cache_requests: bool = Field(
        default=defaults.GENERAL_CACHE_REQUESTS,
        description=desc.GENERAL_CACHE_REQUESTS,
    )
    max_cache_lifetime: str = Field(
        default=defaults.GENERAL_MAX_CACHE_LIFETIME,
        description=desc.GENERAL_MAX_CACHE_LIFETIME,
    )
    normalize_titles: bool = Field(
        default=defaults.GENERAL_NORMALIZE_TITLES,
        description=desc.GENERAL_NORMALIZE_TITLES,
    )
    discord: bool = Field(
        default=defaults.GENERAL_DISCORD,
        description=desc.GENERAL_DISCORD,
    )
    recent: int = Field(
        default=defaults.GENERAL_RECENT,
        ge=0,
        description=desc.GENERAL_RECENT,
    )


class StreamConfig(BaseModel):
    """Configuration specific to video streaming and playback."""

    player: Literal["mpv", "vlc"] = Field(
        default=defaults.STREAM_PLAYER,
        description=desc.STREAM_PLAYER,
    )
    quality: Literal["360", "480", "720", "1080"] = Field(
        default=defaults.STREAM_QUALITY,
        description=desc.STREAM_QUALITY,
    )
    translation_type: Literal["sub", "dub"] = Field(
        default=defaults.STREAM_TRANSLATION_TYPE,
        description=desc.STREAM_TRANSLATION_TYPE,
    )
    server: ProviderServer = Field(
        default=ProviderServer.TOP,
        description=desc.STREAM_SERVER,
    )
    auto_next: bool = Field(
        default=defaults.STREAM_AUTO_NEXT,
        description=desc.STREAM_AUTO_NEXT,
    )
    continue_from_watch_history: bool = Field(
        default=defaults.STREAM_CONTINUE_FROM_WATCH_HISTORY,
        description=desc.STREAM_CONTINUE_FROM_WATCH_HISTORY,
    )
    preferred_watch_history: Literal["local", "remote"] = Field(
        default=defaults.STREAM_PREFERRED_WATCH_HISTORY,
        description=desc.STREAM_PREFERRED_WATCH_HISTORY,
    )
    auto_skip: bool = Field(
        default=defaults.STREAM_AUTO_SKIP,
        description=desc.STREAM_AUTO_SKIP,
    )
    episode_complete_at: int = Field(
        default=defaults.STREAM_EPISODE_COMPLETE_AT,
        ge=0,
        le=100,
        description=desc.STREAM_EPISODE_COMPLETE_AT,
    )
    ytdlp_format: str = Field(
        default=defaults.STREAM_YTDLP_FORMAT,
        description=desc.STREAM_YTDLP_FORMAT,
    )
    force_forward_tracking: bool = Field(
        default=defaults.STREAM_FORCE_FORWARD_TRACKING,
        description=desc.STREAM_FORCE_FORWARD_TRACKING,
    )
    default_media_list_tracking: Literal["track", "disabled", "prompt"] = Field(
        default=defaults.STREAM_DEFAULT_MEDIA_LIST_TRACKING,
        description=desc.STREAM_DEFAULT_MEDIA_LIST_TRACKING,
    )
    sub_lang: str = Field(
        default=defaults.STREAM_SUB_LANG,
        description=desc.STREAM_SUB_LANG,
    )


class ServiceConfig(BaseModel):
    """Configuration for the background download service."""

    enabled: bool = Field(
        default=defaults.SERVICE_ENABLED,
        description=desc.SERVICE_ENABLED,
    )
    watchlist_check_interval: int = Field(
        default=defaults.SERVICE_WATCHLIST_CHECK_INTERVAL,
        ge=5,
        le=180,
        description=desc.SERVICE_WATCHLIST_CHECK_INTERVAL,
    )
    queue_process_interval: int = Field(
        default=defaults.SERVICE_QUEUE_PROCESS_INTERVAL,
        ge=1,
        le=60,
        description=desc.SERVICE_QUEUE_PROCESS_INTERVAL,
    )
    max_concurrent_downloads: int = Field(
        default=defaults.SERVICE_MAX_CONCURRENT_DOWNLOADS,
        ge=1,
        le=10,
        description=desc.SERVICE_MAX_CONCURRENT_DOWNLOADS,
    )
    auto_retry_count: int = Field(
        default=defaults.SERVICE_AUTO_RETRY_COUNT,
        ge=0,
        le=10,
        description=desc.SERVICE_AUTO_RETRY_COUNT,
    )
    cleanup_completed_days: int = Field(
        default=defaults.SERVICE_CLEANUP_COMPLETED_DAYS,
        ge=1,
        le=30,
        description=desc.SERVICE_CLEANUP_COMPLETED_DAYS,
    )
    notification_enabled: bool = Field(
        default=defaults.SERVICE_NOTIFICATION_ENABLED,
        description=desc.SERVICE_NOTIFICATION_ENABLED,
    )


class OtherConfig(BaseModel):
    pass


class SessionsConfig(OtherConfig):
    dir: Path = Field(
        default_factory=lambda: defaults.SESSIONS_DIR,
        description=desc.SESSIONS_DIR,
    )


class FzfConfig(OtherConfig):
    """Configuration specific to the FZF selector."""

    _opts: str = PrivateAttr(
        default_factory=lambda: defaults.FZF_OPTS.read_text(encoding="utf-8")
    )
    header_color: str = Field(
        default=defaults.FZF_HEADER_COLOR, description=desc.FZF_HEADER_COLOR
    )
    _header_ascii_art: str = PrivateAttr(
        default_factory=lambda: APP_ASCII_ART.read_text(encoding="utf-8")
    )
    preview_header_color: str = Field(
        default=defaults.FZF_PREVIEW_HEADER_COLOR,
        description=desc.FZF_PREVIEW_HEADER_COLOR,
    )
    preview_separator_color: str = Field(
        default=defaults.FZF_PREVIEW_SEPARATOR_COLOR,
        description=desc.FZF_PREVIEW_SEPARATOR_COLOR,
    )

    def __init__(self, **kwargs):
        opts = kwargs.pop("opts", None)
        header_ascii_art = kwargs.pop("header_ascii_art", None)

        super().__init__(**kwargs)
        if opts:
            self._opts = opts
        if header_ascii_art:
            self._header_ascii_art = header_ascii_art

    @computed_field(description=desc.FZF_OPTS)
    @property
    def opts(self) -> str:
        return "\n" + "\n".join([f"\t{line}" for line in self._opts.split()])

    @computed_field(description=desc.FZF_HEADER_ASCII_ART)
    @property
    def header_ascii_art(self) -> str:
        return "\n" + "\n".join(
            [f"\t{line}" for line in self._header_ascii_art.split()]
        )


class RofiConfig(OtherConfig):
    """Configuration specific to the Rofi selector."""

    theme_main: Path = Field(
        default_factory=lambda: Path(str(defaults.ROFI_THEME_MAIN)),
        description=desc.ROFI_THEME_MAIN,
    )
    theme_preview: Path = Field(
        default_factory=lambda: Path(str(defaults.ROFI_THEME_PREVIEW)),
        description=desc.ROFI_THEME_PREVIEW,
    )
    theme_confirm: Path = Field(
        default_factory=lambda: Path(str(defaults.ROFI_THEME_CONFIRM)),
        description=desc.ROFI_THEME_CONFIRM,
    )
    theme_input: Path = Field(
        default_factory=lambda: Path(str(defaults.ROFI_THEME_INPUT)),
        description=desc.ROFI_THEME_INPUT,
    )


class MpvConfig(OtherConfig):
    """Configuration specific to the MPV player integration."""

    args: str = Field(default=defaults.MPV_ARGS, description=desc.MPV_ARGS)
    pre_args: str = Field(
        default=defaults.MPV_PRE_ARGS,
        description=desc.MPV_PRE_ARGS,
    )
    disable_popen: bool = Field(
        default=defaults.MPV_DISABLE_POPEN,
        description=desc.MPV_DISABLE_POPEN,
    )
    use_python_mpv: bool = Field(
        default=defaults.MPV_USE_PYTHON_MPV,
        description=desc.MPV_USE_PYTHON_MPV,
    )


class VlcConfig(OtherConfig):
    """Configuration specific to the vlc player integration."""

    args: str = Field(default=defaults.VLC_ARGS, description=desc.VLC_ARGS)


class AnilistConfig(OtherConfig):
    """Configuration for interacting with the AniList API."""

    per_page: int = Field(
        default=defaults.ANILIST_PER_PAGE,
        gt=0,
        le=50,
        description=desc.ANILIST_PER_PAGE,
    )
    sort_by: MediaSort = Field(
        default=MediaSort.SEARCH_MATCH,
        description=desc.ANILIST_SORT_BY,
    )
    media_list_sort_by: UserMediaListSort = Field(
        default=UserMediaListSort.MEDIA_POPULARITY_DESC,
        description=desc.ANILIST_MEDIA_LIST_SORT_BY,
    )
    preferred_language: Literal["english", "romaji"] = Field(
        default=defaults.ANILIST_PREFERRED_LANGUAGE,
        description=desc.ANILIST_PREFERRED_LANGUAGE,
    )


class JikanConfig(OtherConfig):
    """Configuration for the Jikan API (currently none)."""

    per_page: int = Field(
        default=defaults.ANILIST_PER_PAGE,
        gt=0,
        le=50,
        description=desc.ANILIST_PER_PAGE,
    )
    sort_by: MediaSort = Field(
        default=MediaSort.SEARCH_MATCH,
        description=desc.ANILIST_SORT_BY,
    )
    media_list_sort_by: UserMediaListSort = Field(
        default=UserMediaListSort.MEDIA_POPULARITY_DESC,
        description=desc.ANILIST_MEDIA_LIST_SORT_BY,
    )
    preferred_language: Literal["english", "romaji"] = Field(
        default=defaults.ANILIST_PREFERRED_LANGUAGE,
        description=desc.ANILIST_PREFERRED_LANGUAGE,
    )


class DownloadsConfig(OtherConfig):
    """Configuration for download related options"""

    downloader: Literal["auto", "default", "yt-dlp"] = Field(
        default=defaults.DOWNLOADS_DOWNLOADER, description=desc.DOWNLOADS_DOWNLOADER
    )

    downloads_dir: Path = Field(
        default_factory=lambda: defaults.DOWNLOADS_DOWNLOADS_DIR,
        description=desc.DOWNLOADS_DOWNLOADS_DIR,
    )

    # Download tracking configuration
    enable_tracking: bool = Field(
        default=defaults.DOWNLOADS_ENABLE_TRACKING,
        description=desc.DOWNLOADS_ENABLE_TRACKING,
    )
    auto_organize: bool = Field(
        default=defaults.DOWNLOADS_AUTO_ORGANIZE,
        description=desc.DOWNLOADS_AUTO_ORGANIZE,
    )
    max_concurrent: int = Field(
        default=defaults.DOWNLOADS_MAX_CONCURRENT,
        gt=0,
        le=10,
        description=desc.DOWNLOADS_MAX_CONCURRENT,
    )
    auto_cleanup_failed: bool = Field(
        default=defaults.DOWNLOADS_AUTO_CLEANUP_FAILED,
        description=desc.DOWNLOADS_AUTO_CLEANUP_FAILED,
    )
    retention_days: int = Field(
        default=defaults.DOWNLOADS_RETENTION_DAYS,
        gt=0,
        description=desc.DOWNLOADS_RETENTION_DAYS,
    )

    # Integration with watch history
    sync_with_watch_history: bool = Field(
        default=defaults.DOWNLOADS_SYNC_WITH_WATCH_HISTORY,
        description=desc.DOWNLOADS_SYNC_WITH_WATCH_HISTORY,
    )
    auto_mark_offline: bool = Field(
        default=defaults.DOWNLOADS_AUTO_MARK_OFFLINE,
        description=desc.DOWNLOADS_AUTO_MARK_OFFLINE,
    )

    # File organization
    naming_template: str = Field(
        default=defaults.DOWNLOADS_NAMING_TEMPLATE,
        description=desc.DOWNLOADS_NAMING_TEMPLATE,
    )

    # Quality and subtitles
    preferred_quality: Literal["360", "480", "720", "1080", "best"] = Field(
        default=defaults.DOWNLOADS_PREFERRED_QUALITY,
        description=desc.DOWNLOADS_PREFERRED_QUALITY,
    )
    download_subtitles: bool = Field(
        default=defaults.DOWNLOADS_DOWNLOAD_SUBTITLES,
        description=desc.DOWNLOADS_DOWNLOAD_SUBTITLES,
    )

    # Queue management
    queue_max_size: int = Field(
        default=defaults.DOWNLOADS_QUEUE_MAX_SIZE,
        gt=0,
        description=desc.DOWNLOADS_QUEUE_MAX_SIZE,
    )
    auto_start_downloads: bool = Field(
        default=defaults.DOWNLOADS_AUTO_START_DOWNLOADS,
        description=desc.DOWNLOADS_AUTO_START_DOWNLOADS,
    )
    retry_attempts: int = Field(
        default=defaults.DOWNLOADS_RETRY_ATTEMPTS,
        ge=0,
        description=desc.DOWNLOADS_RETRY_ATTEMPTS,
    )
    retry_delay: int = Field(
        default=defaults.DOWNLOADS_RETRY_DELAY,
        ge=0,
        description=desc.DOWNLOADS_RETRY_DELAY,
    )


class MediaRegistryConfig(OtherConfig):
    """Configuration for registry related options"""

    media_dir: Path = Field(
        default=defaults.MEDIA_REGISTRY_DIR,
        description=desc.MEDIA_REGISTRY_DIR,
    )

    index_dir: Path = Field(
        default=defaults.MEDIA_REGISTRY_INDEX_DIR,
        description=desc.MEDIA_REGISTRY_INDEX_DIR,
    )


class AppConfig(BaseModel):
    """The root configuration model for the FastAnime application."""

    general: GeneralConfig = Field(
        default_factory=GeneralConfig,
        description=desc.APP_GENERAL,
    )
    stream: StreamConfig = Field(
        default_factory=StreamConfig,
        description=desc.APP_STREAM,
    )
    downloads: DownloadsConfig = Field(
        default_factory=DownloadsConfig, description=desc.APP_DOWNLOADS
    )
    anilist: AnilistConfig = Field(
        default_factory=AnilistConfig,
        description=desc.APP_ANILIST,
    )
    service: ServiceConfig = Field(
        default_factory=ServiceConfig,
        description=desc.APP_SERVICE,
    )

    fzf: FzfConfig = Field(
        default_factory=FzfConfig,
        description=desc.APP_FZF,
    )
    rofi: RofiConfig = Field(
        default_factory=RofiConfig,
        description=desc.APP_ROFI,
    )
    mpv: MpvConfig = Field(default_factory=MpvConfig, description=desc.APP_MPV)
    service: ServiceConfig = Field(
        default_factory=ServiceConfig,
        description=desc.APP_SERVICE,
    )
    media_registry: MediaRegistryConfig = Field(
        default_factory=MediaRegistryConfig, description=desc.APP_MEDIA_REGISTRY
    )
    sessions: SessionsConfig = Field(
        default_factory=SessionsConfig, description=desc.APP_SESSIONS
    )