// TTS provider registry — voices/languages are the keys the Python backend reads from config
export const TTS_PROVIDERS = {
  sarvam: {
    label: 'Sarvam',
    voices: [
      { value: 'simran',   label: 'Simran (F)' },
      { value: 'meera',    label: 'Meera (F)' },
      { value: 'anushka',  label: 'Anushka (F)' },
      { value: 'pavithra', label: 'Pavithra (F)' },
      { value: 'priya',    label: 'Priya (F)' },
      { value: 'maitreyi', label: 'Maitreyi (F)' },
      { value: 'arya',     label: 'Arya (F)' },
      { value: 'amol',     label: 'Amol (M)' },
      { value: 'advait',   label: 'Advait (M)' },
    ],
    languages: [
      { value: 'en-IN', label: 'English (India)' },
      { value: 'hi-IN', label: 'Hindi' },
      { value: 'ta-IN', label: 'Tamil' },
      { value: 'te-IN', label: 'Telugu' },
      { value: 'kn-IN', label: 'Kannada' },
      { value: 'ml-IN', label: 'Malayalam' },
      { value: 'mr-IN', label: 'Marathi' },
      { value: 'bn-IN', label: 'Bengali' },
      { value: 'gu-IN', label: 'Gujarati' },
    ],
    defaults: { voice: 'simran', language: 'en-IN' },
    buildId: ({ voice, language }) => ({ service: 'sarvam', voice, language }),
  },
  deepgram: {
    label: 'Deepgram',
    voices: [
      { value: 'aura-2-thalia-en',  label: 'Thalia (F)' },
      { value: 'aura-2-luna-en',    label: 'Luna (F)' },
      { value: 'aura-2-stella-en',  label: 'Stella (F)' },
      { value: 'aura-2-asteria-en', label: 'Asteria (F)' },
      { value: 'aura-2-orion-en',   label: 'Orion (M)' },
      { value: 'aura-2-atlas-en',   label: 'Atlas (M)' },
      { value: 'aura-2-helios-en',  label: 'Helios (M)' },
    ],
    defaults: { voice: 'aura-2-thalia-en' },
    buildId: ({ voice }) => ({ service: 'deepgram', 'model-name': voice }),
  },
  resembleai: {
    label: 'ResembleAI',
    voices: [
      { value: 'c99f388c', label: 'Default Voice' },
    ],
    defaults: { voice: 'c99f388c' },
    buildId: ({ voice }) => ({ service: 'resembleai', voice }),
  },
  google: {
    label: 'Google TTS',
    voices: [
      { value: 'en-IN-Wavenet-A', label: 'Wavenet-A (F, IN)' },
      { value: 'en-IN-Wavenet-B', label: 'Wavenet-B (M, IN)' },
      { value: 'en-IN-Wavenet-C', label: 'Wavenet-C (M, IN)' },
      { value: 'en-IN-Wavenet-D', label: 'Wavenet-D (F, IN)' },
      { value: 'en-US-Neural2-F', label: 'Neural2-F (F, US)' },
      { value: 'en-US-Neural2-D', label: 'Neural2-D (M, US)' },
    ],
    defaults: { voice: 'en-IN-Wavenet-A' },
    buildId: ({ voice }) => ({ service: 'google', 'voice-name': voice }),
  },
}

// STT provider registry
export const STT_PROVIDERS = {
  'deepgram-streaming': {
    label: 'Deepgram (Streaming)',
    models: [
      { value: 'nova-3', label: 'Nova 3' },
      { value: 'nova-2', label: 'Nova 2' },
    ],
    languages: [
      { value: 'en-IN', label: 'English (India)' },
      { value: 'en-US', label: 'English (US)' },
      { value: 'multi', label: 'Multilingual' },
      { value: 'hi',    label: 'Hindi' },
    ],
    defaults: { model: 'nova-3', language: 'en-IN' },
    buildId: ({ model, language }) => ({ service: 'deepgram-streaming', 'model-name': model, language }),
  },
  deepgram: {
    label: 'Deepgram (Batch)',
    models: [
      { value: 'nova-3', label: 'Nova 3' },
      { value: 'nova-2', label: 'Nova 2' },
    ],
    languages: [
      { value: 'en-IN', label: 'English (India)' },
      { value: 'en-US', label: 'English (US)' },
      { value: 'multi', label: 'Multilingual' },
    ],
    defaults: { model: 'nova-3', language: 'en-IN' },
    buildId: ({ model, language }) => ({ service: 'deepgram', 'model-name': model, language }),
  },
  sarvam: {
    label: 'Sarvam (Saarika)',
    languages: [
      { value: 'en-IN', label: 'English (India)' },
      { value: 'hi-IN', label: 'Hindi' },
      { value: 'ta-IN', label: 'Tamil' },
      { value: 'te-IN', label: 'Telugu' },
    ],
    defaults: { language: 'en-IN' },
    buildId: ({ language }) => ({ service: 'sarvam', language }),
  },
  soniox: {
    label: 'Soniox',
    multiLanguage: true,
    languages: [
      { value: 'af', label: 'Afrikaans' },
      { value: 'sq', label: 'Albanian' },
      { value: 'ar', label: 'Arabic' },
      { value: 'az', label: 'Azerbaijani' },
      { value: 'eu', label: 'Basque' },
      { value: 'be', label: 'Belarusian' },
      { value: 'bn', label: 'Bengali' },
      { value: 'bs', label: 'Bosnian' },
      { value: 'bg', label: 'Bulgarian' },
      { value: 'ca', label: 'Catalan' },
      { value: 'zh', label: 'Chinese' },
      { value: 'hr', label: 'Croatian' },
      { value: 'cs', label: 'Czech' },
      { value: 'da', label: 'Danish' },
      { value: 'nl', label: 'Dutch' },
      { value: 'en', label: 'English' },
      { value: 'et', label: 'Estonian' },
      { value: 'fi', label: 'Finnish' },
      { value: 'fr', label: 'French' },
      { value: 'gl', label: 'Galician' },
      { value: 'de', label: 'German' },
      { value: 'el', label: 'Greek' },
      { value: 'gu', label: 'Gujarati' },
      { value: 'he', label: 'Hebrew' },
      { value: 'hi', label: 'Hindi' },
      { value: 'hu', label: 'Hungarian' },
      { value: 'id', label: 'Indonesian' },
      { value: 'it', label: 'Italian' },
      { value: 'ja', label: 'Japanese' },
      { value: 'kn', label: 'Kannada' },
      { value: 'kk', label: 'Kazakh' },
      { value: 'ko', label: 'Korean' },
      { value: 'lv', label: 'Latvian' },
      { value: 'lt', label: 'Lithuanian' },
      { value: 'mk', label: 'Macedonian' },
      { value: 'ms', label: 'Malay' },
      { value: 'ml', label: 'Malayalam' },
      { value: 'mr', label: 'Marathi' },
      { value: 'no', label: 'Norwegian' },
      { value: 'fa', label: 'Persian' },
      { value: 'pl', label: 'Polish' },
      { value: 'pt', label: 'Portuguese' },
      { value: 'pa', label: 'Punjabi' },
      { value: 'ro', label: 'Romanian' },
      { value: 'ru', label: 'Russian' },
      { value: 'sr', label: 'Serbian' },
      { value: 'sk', label: 'Slovak' },
      { value: 'sl', label: 'Slovenian' },
      { value: 'es', label: 'Spanish' },
      { value: 'sw', label: 'Swahili' },
      { value: 'sv', label: 'Swedish' },
      { value: 'tl', label: 'Tagalog' },
      { value: 'ta', label: 'Tamil' },
      { value: 'te', label: 'Telugu' },
      { value: 'th', label: 'Thai' },
      { value: 'tr', label: 'Turkish' },
      { value: 'uk', label: 'Ukrainian' },
      { value: 'ur', label: 'Urdu' },
      { value: 'vi', label: 'Vietnamese' },
      { value: 'cy', label: 'Welsh' },
    ],
    defaults: { languages: ['hi', 'en'] },
    buildId: ({ languages }) => ({ service: 'soniox', language: languages }),
  },
}

export const VOICE_SETTING_DEFAULTS = {
  ttsProvider:              'sarvam',
  ttsVoice:                 'simran',
  ttsLanguage:              'en-IN',
  sttProvider:              'deepgram-streaming',
  sttModel:                 'nova-3',
  sttLanguage:              'en-IN',
  sttLanguages:             ['hi', 'en'],   // for multi-language providers (soniox)
  grainVoice:               false,
  grainLevel:               0.025,
  preFire:                  true,
  preFireMin:               50,
  preFireMax:               5000,
  preFireCurrent:           100,
  inactivity:               true,
  inactivityTimePeriod:     1000,
  inactivityMaxTimes:       3,
  inactivityMessage:        "Are you still there? No rush — take your time and answer whenever you're ready.",
  inactivityInterruptionType: 'full',
}

// Converts the flat settings object into the customs keys the backend expects
export function buildVoiceCustoms(settings) {
  const s = { ...VOICE_SETTING_DEFAULTS, ...settings }

  const ttsDef = TTS_PROVIDERS[s.ttsProvider]?.defaults ?? {}
  const sttDef = STT_PROVIDERS[s.sttProvider]?.defaults ?? {}
  const sttProv = STT_PROVIDERS[s.sttProvider]

  const ttsParams = {
    voice:    s.ttsVoice    ?? ttsDef.voice,
    language: s.ttsLanguage ?? ttsDef.language,
    model:    ttsDef.model,
  }

  const sttParams = sttProv?.multiLanguage
    ? { languages: s.sttLanguages?.length ? s.sttLanguages : (sttDef.languages ?? ['en']) }
    : { model: s.sttModel ?? sttDef.model, language: s.sttLanguage ?? sttDef.language }

  return {
    tts_id: TTS_PROVIDERS[s.ttsProvider]?.buildId(ttsParams) ?? { service: s.ttsProvider },
    stt_id: sttProv?.buildId(sttParams) ?? { service: s.sttProvider },
    'grain-voice': s.grainVoice,
    'grain-level': s.grainVoice ? s.grainLevel : 0,
    'pre-fire': s.preFire,
    'pre-fire-config': s.preFire
      ? { min: s.preFireMin, max: s.preFireMax, current: s.preFireCurrent }
      : {},
    inactivity: s.inactivity,
    'inactivity-metadata': s.inactivity ? {
      'time-period':          s.inactivityTimePeriod,
      'max-times':            s.inactivityMaxTimes,
      'inactivity-type':      'static',
      message:                s.inactivityMessage,
      'interruption-type':    s.inactivityInterruptionType,
      'interruption-metadata': {},
    } : {},
  }
}