import {
  AnkiConnectConfig,
  Config,
  RawConfig,
  ResolvedConfig,
  RuntimeOptionId,
  RuntimeOptionScope,
  RuntimeOptionValue,
  RuntimeOptionValueType,
} from "../types";

export type ConfigValueKind =
  | "boolean"
  | "number"
  | "string"
  | "enum"
  | "array"
  | "object";

export interface RuntimeOptionRegistryEntry {
  id: RuntimeOptionId;
  path: string;
  label: string;
  scope: RuntimeOptionScope;
  valueType: RuntimeOptionValueType;
  allowedValues: RuntimeOptionValue[];
  defaultValue: RuntimeOptionValue;
  requiresRestart: boolean;
  formatValueForOsd: (value: RuntimeOptionValue) => string;
  toAnkiPatch: (value: RuntimeOptionValue) => Partial<AnkiConnectConfig>;
}

export interface ConfigOptionRegistryEntry {
  path: string;
  kind: ConfigValueKind;
  defaultValue: unknown;
  description: string;
  enumValues?: readonly string[];
  runtime?: RuntimeOptionRegistryEntry;
}

export interface ConfigTemplateSection {
  title: string;
  description: string[];
  key: keyof ResolvedConfig;
  notes?: string[];
}

export const SPECIAL_COMMANDS = {
  SUBSYNC_TRIGGER: "__subsync-trigger",
  RUNTIME_OPTIONS_OPEN: "__runtime-options-open",
  RUNTIME_OPTION_CYCLE_PREFIX: "__runtime-option-cycle:",
  REPLAY_SUBTITLE: "__replay-subtitle",
  PLAY_NEXT_SUBTITLE: "__play-next-subtitle",
} as const;

export const DEFAULT_KEYBINDINGS: NonNullable<ResolvedConfig["keybindings"]> = [
  { key: "Space", command: ["cycle", "pause"] },
  { key: "ArrowRight", command: ["seek", 5] },
  { key: "ArrowLeft", command: ["seek", -5] },
  { key: "ArrowUp", command: ["seek", 60] },
  { key: "ArrowDown", command: ["seek", -60] },
  { key: "Shift+KeyH", command: ["sub-seek", -1] },
  { key: "Shift+KeyL", command: ["sub-seek", 1] },
  { key: "Ctrl+Shift+KeyH", command: [SPECIAL_COMMANDS.REPLAY_SUBTITLE] },
  { key: "Ctrl+Shift+KeyL", command: [SPECIAL_COMMANDS.PLAY_NEXT_SUBTITLE] },
  { key: "KeyQ", command: ["quit"] },
  { key: "Ctrl+KeyW", command: ["quit"] },
];

export const DEFAULT_CONFIG: ResolvedConfig = {
  subtitlePosition: { yPercent: 10 },
  keybindings: [],
  websocket: {
    enabled: "auto",
    port: 6677,
  },
  texthooker: {
    openBrowser: true,
  },
  ankiConnect: {
    enabled: false,
    url: "http://127.0.0.1:8765",
    pollingRate: 3000,
    fields: {
      audio: "ExpressionAudio",
      image: "Picture",
      sentence: "Sentence",
      miscInfo: "MiscInfo",
      translation: "SelectionText",
    },
    ai: {
      enabled: false,
      alwaysUseAiTranslation: false,
      apiKey: "",
      model: "openai/gpt-4o-mini",
      baseUrl: "https://openrouter.ai/api",
      targetLanguage: "English",
      systemPrompt:
        "You are a translation engine. Return only the translated text with no explanations.",
    },
    media: {
      generateAudio: true,
      generateImage: true,
      imageType: "static",
      imageFormat: "jpg",
      imageQuality: 92,
      imageMaxWidth: undefined,
      imageMaxHeight: undefined,
      animatedFps: 10,
      animatedMaxWidth: 640,
      animatedMaxHeight: undefined,
      animatedCrf: 35,
      audioPadding: 0.5,
      fallbackDuration: 3.0,
      maxMediaDuration: 30,
    },
    behavior: {
      overwriteAudio: true,
      overwriteImage: true,
      mediaInsertMode: "append",
      highlightWord: true,
      notificationType: "osd",
      autoUpdateNewCards: true,
    },
    nPlusOne: {
      highlightEnabled: false,
      refreshMinutes: 1440,
      matchMode: "headword",
      decks: [],
    },
    metadata: {
      pattern: "[SubMiner] %f (%t)",
    },
    isLapis: {
      enabled: false,
      sentenceCardModel: "Japanese sentences",
      sentenceCardSentenceField: "Sentence",
      sentenceCardAudioField: "SentenceAudio",
    },
    isKiku: {
      enabled: false,
      fieldGrouping: "disabled",
      deleteDuplicateInAuto: true,
    },
  },
  shortcuts: {
    toggleVisibleOverlayGlobal: "Alt+Shift+O",
    toggleInvisibleOverlayGlobal: "Alt+Shift+I",
    copySubtitle: "CommandOrControl+C",
    copySubtitleMultiple: "CommandOrControl+Shift+C",
    updateLastCardFromClipboard: "CommandOrControl+V",
    triggerFieldGrouping: "CommandOrControl+G",
    triggerSubsync: "Ctrl+Alt+S",
    mineSentence: "CommandOrControl+S",
    mineSentenceMultiple: "CommandOrControl+Shift+S",
    multiCopyTimeoutMs: 3000,
    toggleSecondarySub: "CommandOrControl+Shift+V",
    markAudioCard: "CommandOrControl+Shift+A",
    openRuntimeOptions: "CommandOrControl+Shift+O",
    openJimaku: "Ctrl+Shift+J",
  },
  secondarySub: {
    secondarySubLanguages: [],
    autoLoadSecondarySub: false,
    defaultMode: "hover",
  },
  subsync: {
    defaultMode: "auto",
    alass_path: "",
    ffsubsync_path: "",
    ffmpeg_path: "",
  },
  subtitleStyle: {
    fontFamily:
      "Noto Sans CJK JP Regular, Noto Sans CJK JP, Arial Unicode MS, Arial, sans-serif",
    fontSize: 35,
    fontColor: "#cad3f5",
    fontWeight: "normal",
    fontStyle: "normal",
    backgroundColor: "rgba(54, 58, 79, 0.5)",
    secondary: {
      fontSize: 24,
      fontColor: "#ffffff",
      backgroundColor: "transparent",
      fontWeight: "normal",
      fontStyle: "normal",
      fontFamily:
        "Noto Sans CJK JP Regular, Noto Sans CJK JP, Arial Unicode MS, Arial, sans-serif",
    },
  },
  auto_start_overlay: false,
  bind_visible_overlay_to_mpv_sub_visibility: true,
  jimaku: {
    apiBaseUrl: "https://jimaku.cc",
    languagePreference: "ja",
    maxEntryResults: 10,
  },
  youtubeSubgen: {
    mode: "automatic",
    whisperBin: "",
    whisperModel: "",
    primarySubLanguages: ["ja", "jpn"],
  },
  invisibleOverlay: {
    startupVisibility: "platform-default",
  },
};

export const DEFAULT_ANKI_CONNECT_CONFIG = DEFAULT_CONFIG.ankiConnect;

export const RUNTIME_OPTION_REGISTRY: RuntimeOptionRegistryEntry[] = [
  {
    id: "anki.autoUpdateNewCards",
    path: "ankiConnect.behavior.autoUpdateNewCards",
    label: "Auto Update New Cards",
    scope: "ankiConnect",
    valueType: "boolean",
    allowedValues: [true, false],
    defaultValue: DEFAULT_CONFIG.ankiConnect.behavior.autoUpdateNewCards,
    requiresRestart: false,
    formatValueForOsd: (value) => (value === true ? "On" : "Off"),
    toAnkiPatch: (value) => ({
      behavior: { autoUpdateNewCards: value === true },
    }),
  },
  {
    id: "anki.nPlusOneMatchMode",
    path: "ankiConnect.nPlusOne.matchMode",
    label: "N+1 Match Mode",
    scope: "ankiConnect",
    valueType: "enum",
    allowedValues: ["headword", "surface"],
    defaultValue: DEFAULT_CONFIG.ankiConnect.nPlusOne.matchMode,
    requiresRestart: false,
    formatValueForOsd: (value) => String(value),
    toAnkiPatch: (value) => ({
      nPlusOne: {
        matchMode:
          value === "headword" || value === "surface" ? value : "headword",
      },
    }),
  },
  {
    id: "anki.kikuFieldGrouping",
    path: "ankiConnect.isKiku.fieldGrouping",
    label: "Kiku Field Grouping",
    scope: "ankiConnect",
    valueType: "enum",
    allowedValues: ["auto", "manual", "disabled"],
    defaultValue: "disabled",
    requiresRestart: false,
    formatValueForOsd: (value) => String(value),
    toAnkiPatch: (value) => ({
      isKiku: {
        fieldGrouping:
          value === "auto" || value === "manual" || value === "disabled"
            ? value
            : "disabled",
      },
    }),
  },
];

export const CONFIG_OPTION_REGISTRY: ConfigOptionRegistryEntry[] = [
  {
    path: "websocket.enabled",
    kind: "enum",
    enumValues: ["auto", "true", "false"],
    defaultValue: DEFAULT_CONFIG.websocket.enabled,
    description: "Built-in subtitle websocket server mode.",
  },
  {
    path: "websocket.port",
    kind: "number",
    defaultValue: DEFAULT_CONFIG.websocket.port,
    description: "Built-in subtitle websocket server port.",
  },
  {
    path: "ankiConnect.enabled",
    kind: "boolean",
    defaultValue: DEFAULT_CONFIG.ankiConnect.enabled,
    description: "Enable AnkiConnect integration.",
  },
  {
    path: "ankiConnect.pollingRate",
    kind: "number",
    defaultValue: DEFAULT_CONFIG.ankiConnect.pollingRate,
    description: "Polling interval in milliseconds.",
  },
  {
    path: "ankiConnect.behavior.autoUpdateNewCards",
    kind: "boolean",
    defaultValue: DEFAULT_CONFIG.ankiConnect.behavior.autoUpdateNewCards,
    description: "Automatically update newly added cards.",
    runtime: RUNTIME_OPTION_REGISTRY[0],
  },
  {
    path: "ankiConnect.nPlusOne.matchMode",
    kind: "enum",
    enumValues: ["headword", "surface"],
    defaultValue: DEFAULT_CONFIG.ankiConnect.nPlusOne.matchMode,
    description: "Known-word matching strategy for N+1 highlighting.",
  },
  {
    path: "ankiConnect.nPlusOne.highlightEnabled",
    kind: "boolean",
    defaultValue: DEFAULT_CONFIG.ankiConnect.nPlusOne.highlightEnabled,
    description: "Enable fast local highlighting for words already known in Anki.",
  },
  {
    path: "ankiConnect.nPlusOne.refreshMinutes",
    kind: "number",
    defaultValue: DEFAULT_CONFIG.ankiConnect.nPlusOne.refreshMinutes,
    description: "Minutes between known-word cache refreshes.",
  },
  {
    path: "ankiConnect.nPlusOne.decks",
    kind: "array",
    defaultValue: DEFAULT_CONFIG.ankiConnect.nPlusOne.decks,
    description:
      "Decks used for N+1 known-word cache scope. Supports one or more deck names.",
  },
  {
    path: "ankiConnect.isKiku.fieldGrouping",
    kind: "enum",
    enumValues: ["auto", "manual", "disabled"],
    defaultValue: DEFAULT_CONFIG.ankiConnect.isKiku.fieldGrouping,
    description: "Kiku duplicate-card field grouping mode.",
    runtime: RUNTIME_OPTION_REGISTRY[1],
  },
  {
    path: "subsync.defaultMode",
    kind: "enum",
    enumValues: ["auto", "manual"],
    defaultValue: DEFAULT_CONFIG.subsync.defaultMode,
    description: "Subsync default mode.",
  },
  {
    path: "shortcuts.multiCopyTimeoutMs",
    kind: "number",
    defaultValue: DEFAULT_CONFIG.shortcuts.multiCopyTimeoutMs,
    description: "Timeout for multi-copy/mine modes.",
  },
  {
    path: "bind_visible_overlay_to_mpv_sub_visibility",
    kind: "boolean",
    defaultValue: DEFAULT_CONFIG.bind_visible_overlay_to_mpv_sub_visibility,
    description:
      "Link visible overlay toggles to MPV subtitle visibility (primary and secondary).",
  },
  {
    path: "jimaku.languagePreference",
    kind: "enum",
    enumValues: ["ja", "en", "none"],
    defaultValue: DEFAULT_CONFIG.jimaku.languagePreference,
    description: "Preferred language used in Jimaku search.",
  },
  {
    path: "jimaku.maxEntryResults",
    kind: "number",
    defaultValue: DEFAULT_CONFIG.jimaku.maxEntryResults,
    description: "Maximum Jimaku search results returned.",
  },
  {
    path: "youtubeSubgen.mode",
    kind: "enum",
    enumValues: ["automatic", "preprocess", "off"],
    defaultValue: DEFAULT_CONFIG.youtubeSubgen.mode,
    description: "YouTube subtitle generation mode for the launcher script.",
  },
  {
    path: "youtubeSubgen.whisperBin",
    kind: "string",
    defaultValue: DEFAULT_CONFIG.youtubeSubgen.whisperBin,
    description: "Path to whisper.cpp CLI used as fallback transcription engine.",
  },
  {
    path: "youtubeSubgen.whisperModel",
    kind: "string",
    defaultValue: DEFAULT_CONFIG.youtubeSubgen.whisperModel,
    description: "Path to whisper model used for fallback transcription.",
  },
  {
    path: "youtubeSubgen.primarySubLanguages",
    kind: "string",
    defaultValue: DEFAULT_CONFIG.youtubeSubgen.primarySubLanguages.join(","),
    description:
      "Comma-separated primary subtitle language priority used by the launcher.",
  },
];

export const CONFIG_TEMPLATE_SECTIONS: ConfigTemplateSection[] = [
  {
    title: "Overlay Auto-Start",
    description: [
      "When overlay connects to mpv, automatically show overlay and hide mpv subtitles.",
    ],
    key: "auto_start_overlay",
  },
  {
    title: "Visible Overlay Subtitle Binding",
    description: [
      "Control whether visible overlay toggles also toggle MPV subtitle visibility.",
      "When enabled, visible overlay hides MPV subtitles; when disabled, MPV subtitles are left unchanged.",
    ],
    key: "bind_visible_overlay_to_mpv_sub_visibility",
  },
  {
    title: "Texthooker Server",
    description: [
      "Control whether browser opens automatically for texthooker.",
    ],
    key: "texthooker",
  },
  {
    title: "WebSocket Server",
    description: [
      "Built-in WebSocket server broadcasts subtitle text to connected clients.",
      "Auto mode disables built-in server if mpv_websocket is detected.",
    ],
    key: "websocket",
  },
  {
    title: "AnkiConnect Integration",
    description: ["Automatic Anki updates and media generation options."],
    key: "ankiConnect",
  },
  {
    title: "Keyboard Shortcuts",
    description: [
      "Overlay keyboard shortcuts. Set a shortcut to null to disable.",
    ],
    key: "shortcuts",
  },
  {
    title: "Invisible Overlay",
    description: [
      "Startup behavior for the invisible interactive subtitle mining layer.",
    ],
    notes: [
      "Invisible subtitle position edit mode: Ctrl/Cmd+Shift+P to toggle, arrow keys to move, Enter or Ctrl/Cmd+S to save, Esc to cancel.",
      "This edit-mode shortcut is fixed and is not currently configurable.",
    ],
    key: "invisibleOverlay",
  },
  {
    title: "Keybindings (MPV Commands)",
    description: [
      "Extra keybindings that are merged with built-in defaults.",
      "Set command to null to disable a default keybinding.",
    ],
    key: "keybindings",
  },
  {
    title: "Subtitle Appearance",
    description: ["Primary and secondary subtitle styling."],
    key: "subtitleStyle",
  },
  {
    title: "Secondary Subtitles",
    description: [
      "Dual subtitle track options.",
      "Used by subminer YouTube subtitle generation as secondary language preferences.",
    ],
    key: "secondarySub",
  },
  {
    title: "Auto Subtitle Sync",
    description: ["Subsync engine and executable paths."],
    key: "subsync",
  },
  {
    title: "Subtitle Position",
    description: ["Initial vertical subtitle position from the bottom."],
    key: "subtitlePosition",
  },
  {
    title: "Jimaku",
    description: ["Jimaku API configuration and defaults."],
    key: "jimaku",
  },
  {
    title: "YouTube Subtitle Generation",
    description: [
      "Defaults for subminer YouTube subtitle extraction/transcription mode.",
    ],
    key: "youtubeSubgen",
  },
];

export function deepCloneConfig(config: ResolvedConfig): ResolvedConfig {
  return JSON.parse(JSON.stringify(config)) as ResolvedConfig;
}

export function deepMergeRawConfig(
  base: RawConfig,
  patch: RawConfig,
): RawConfig {
  const clone = JSON.parse(JSON.stringify(base)) as Record<string, unknown>;
  const patchObject = patch as Record<string, unknown>;

  const mergeInto = (
    target: Record<string, unknown>,
    source: Record<string, unknown>,
  ): void => {
    for (const [key, value] of Object.entries(source)) {
      if (
        value !== null &&
        typeof value === "object" &&
        !Array.isArray(value) &&
        typeof target[key] === "object" &&
        target[key] !== null &&
        !Array.isArray(target[key])
      ) {
        mergeInto(
          target[key] as Record<string, unknown>,
          value as Record<string, unknown>,
        );
      } else {
        target[key] = value;
      }
    }
  };

  mergeInto(clone, patchObject);
  return clone as RawConfig;
}