export type MetricsSnapshot = {
  schemaVersion: 1;
  updatedAt: number;
  provider: string | null;
  transcriptUi: {
    supported: boolean;
    currentPartialText: string | null;
    lastFinalText: string | null;
    partialCount: number;
    finalCount: number;
    diarizationCount: number;
    utteranceCount: number;
    lastFirstPartialLatencyMs: number | null;
    avgFirstPartialLatencyMs: number | null;
    p95FirstPartialLatencyMs: number | null;
    lastFinalLatencyMs: number | null;
    avgFinalLatencyMs: number | null;
    p95FinalLatencyMs: number | null;
    lastStabilizationLatencyMs: number | null;
    avgStabilizationLatencyMs: number | null;
    p95StabilizationLatencyMs: number | null;
  };
  session: {
    supported: boolean;
    sessionStartedAt: number | null;
    sessionStoppedAt: number | null;
    sessionDurationMs: number | null;
    initializationLatencyMs: number | null;
    pauseCount: number;
    resumeCount: number;
    pausedDurationMs: number | null;
    errorCount: number;
    fatalErrorCount: number;
  };
  connection: {
    supported: boolean;
    connectionState: string;
    websocketState: string;
    browserOnline: boolean;
    connectionOpenCount: number;
    connectionCloseCount: number;
    connectedDurationMs: number | null;
    reconnectingDurationMs: number | null;
    disconnectedDurationMs: number | null;
    transportBufferedAmountBytes: number;
    lastDisconnectCode: number | null;
    lastDisconnectReason: string | null;
  };
  recovery: {
    supported: boolean;
    reconnectCount: number;
    recoverySuccessCount: number;
    terminalDisconnectCount: number;
    currentReconnectAttempt: number | null;
    nextReconnectDelayMs: number | null;
    remainingReconnectAttempts: number | null;
    lastRecoveryDurationMs: number | null;
    avgRecoveryDurationMs: number | null;
    p95RecoveryDurationMs: number | null;
  };
  buffering: {
    supported: boolean;
    isBufferingAudio: boolean;
    isDrainingAudio: boolean;
    pendingBufferedAudioBytes: number;
    persistedBufferedAudioBytes: number;
    persistedBufferedAudioSegments: number;
    totalBufferedAudioBytes: number;
    peakBufferedAudioBytes: number;
    bufferingDurationMs: number | null;
    drainingDurationMs: number | null;
    lastDrainProgressAt: number | null;
    drainCycles: number;
    drainExitReason: string | null;
    finishDeliveryState: string | null;
    avgBufferGrowthRateBytesPerSecond: number | null;
    avgBufferDrainRateBytesPerSecond: number | null;
    bufferStallCount: number;
  };
  browserNetwork: {
    supported: boolean;
    onlineTransitionCount: number;
    offlineTransitionCount: number;
    offlineDurationMs: number | null;
    flapCount: number;
    effectiveType: string | null;
    downlinkMbps: number | null;
    rttMs: number | null;
  };
  audioCapture: {
    supported: boolean;
    inputSampleRate: number | null;
    targetSampleRate: number | null;
    channelCount: number | null;
    currentRms: number | null;
    peakRms: number | null;
    currentPeakAmplitude: number | null;
    clippingEventCount: number;
    silenceRatio: number | null;
    speechActivityRatio: number | null;
    audioCallbackGapCount: number;
    longestAudioCallbackGapMs: number | null;
  };
};

export const createMetricsSnapshot = (
  overrides: Partial<MetricsSnapshot> = {}
): MetricsSnapshot => {
  const now = 1_700_000_000_000;

  return {
    schemaVersion: 1,
    updatedAt: now,
    provider: "sofya_as_service",
    transcriptUi: {
      supported: true,
      currentPartialText: null,
      lastFinalText: null,
      partialCount: 0,
      finalCount: 0,
      diarizationCount: 0,
      utteranceCount: 0,
      lastFirstPartialLatencyMs: null,
      avgFirstPartialLatencyMs: null,
      p95FirstPartialLatencyMs: null,
      lastFinalLatencyMs: null,
      avgFinalLatencyMs: null,
      p95FinalLatencyMs: null,
      lastStabilizationLatencyMs: null,
      avgStabilizationLatencyMs: null,
      p95StabilizationLatencyMs: null,
    },
    session: {
      supported: true,
      sessionStartedAt: now,
      sessionStoppedAt: null,
      sessionDurationMs: null,
      initializationLatencyMs: 42,
      pauseCount: 0,
      resumeCount: 0,
      pausedDurationMs: null,
      errorCount: 0,
      fatalErrorCount: 0,
    },
    connection: {
      supported: true,
      connectionState: "connecting",
      websocketState: "connecting",
      browserOnline: true,
      connectionOpenCount: 0,
      connectionCloseCount: 0,
      connectedDurationMs: null,
      reconnectingDurationMs: null,
      disconnectedDurationMs: null,
      transportBufferedAmountBytes: 0,
      lastDisconnectCode: null,
      lastDisconnectReason: null,
    },
    recovery: {
      supported: true,
      reconnectCount: 0,
      recoverySuccessCount: 0,
      terminalDisconnectCount: 0,
      currentReconnectAttempt: null,
      nextReconnectDelayMs: null,
      remainingReconnectAttempts: 96,
      lastRecoveryDurationMs: null,
      avgRecoveryDurationMs: null,
      p95RecoveryDurationMs: null,
    },
    buffering: {
      supported: true,
      isBufferingAudio: false,
      isDrainingAudio: false,
      pendingBufferedAudioBytes: 0,
      persistedBufferedAudioBytes: 0,
      persistedBufferedAudioSegments: 0,
      totalBufferedAudioBytes: 0,
      peakBufferedAudioBytes: 0,
      bufferingDurationMs: null,
      drainingDurationMs: null,
      lastDrainProgressAt: null,
      drainCycles: 0,
      drainExitReason: null,
      finishDeliveryState: null,
      avgBufferGrowthRateBytesPerSecond: null,
      avgBufferDrainRateBytesPerSecond: null,
      bufferStallCount: 0,
    },
    browserNetwork: {
      supported: true,
      onlineTransitionCount: 0,
      offlineTransitionCount: 0,
      offlineDurationMs: null,
      flapCount: 0,
      effectiveType: null,
      downlinkMbps: null,
      rttMs: null,
    },
    audioCapture: {
      supported: true,
      inputSampleRate: 44_100,
      targetSampleRate: 16_000,
      channelCount: 1,
      currentRms: null,
      peakRms: null,
      currentPeakAmplitude: null,
      clippingEventCount: 0,
      silenceRatio: null,
      speechActivityRatio: null,
      audioCallbackGapCount: 0,
      longestAudioCallbackGapMs: null,
    },
    ...overrides,
  };
};

export const createUnsupportedMetricsSnapshot = (
  overrides: Partial<MetricsSnapshot> = {}
): MetricsSnapshot =>
  createMetricsSnapshot({
    provider: "oracle",
    transcriptUi: {
      supported: false,
      currentPartialText: null,
      lastFinalText: null,
      partialCount: 0,
      finalCount: 0,
      diarizationCount: 0,
      utteranceCount: 0,
      lastFirstPartialLatencyMs: null,
      avgFirstPartialLatencyMs: null,
      p95FirstPartialLatencyMs: null,
      lastFinalLatencyMs: null,
      avgFinalLatencyMs: null,
      p95FinalLatencyMs: null,
      lastStabilizationLatencyMs: null,
      avgStabilizationLatencyMs: null,
      p95StabilizationLatencyMs: null,
    },
    session: {
      supported: false,
      sessionStartedAt: null,
      sessionStoppedAt: null,
      sessionDurationMs: null,
      initializationLatencyMs: null,
      pauseCount: 0,
      resumeCount: 0,
      pausedDurationMs: null,
      errorCount: 0,
      fatalErrorCount: 0,
    },
    connection: {
      supported: false,
      connectionState: "disconnected",
      websocketState: "unavailable",
      browserOnline: true,
      connectionOpenCount: 0,
      connectionCloseCount: 0,
      connectedDurationMs: null,
      reconnectingDurationMs: null,
      disconnectedDurationMs: null,
      transportBufferedAmountBytes: 0,
      lastDisconnectCode: null,
      lastDisconnectReason: null,
    },
    recovery: {
      supported: false,
      reconnectCount: 0,
      recoverySuccessCount: 0,
      terminalDisconnectCount: 0,
      currentReconnectAttempt: null,
      nextReconnectDelayMs: null,
      remainingReconnectAttempts: null,
      lastRecoveryDurationMs: null,
      avgRecoveryDurationMs: null,
      p95RecoveryDurationMs: null,
    },
    buffering: {
      supported: false,
      isBufferingAudio: false,
      isDrainingAudio: false,
      pendingBufferedAudioBytes: 0,
      persistedBufferedAudioBytes: 0,
      persistedBufferedAudioSegments: 0,
      totalBufferedAudioBytes: 0,
      peakBufferedAudioBytes: 0,
      bufferingDurationMs: null,
      drainingDurationMs: null,
      lastDrainProgressAt: null,
      drainCycles: 0,
      drainExitReason: null,
      finishDeliveryState: null,
      avgBufferGrowthRateBytesPerSecond: null,
      avgBufferDrainRateBytesPerSecond: null,
      bufferStallCount: 0,
    },
    browserNetwork: {
      supported: false,
      onlineTransitionCount: 0,
      offlineTransitionCount: 0,
      offlineDurationMs: null,
      flapCount: 0,
      effectiveType: null,
      downlinkMbps: null,
      rttMs: null,
    },
    audioCapture: {
      supported: false,
      inputSampleRate: null,
      targetSampleRate: null,
      channelCount: null,
      currentRms: null,
      peakRms: null,
      currentPeakAmplitude: null,
      clippingEventCount: 0,
      silenceRatio: null,
      speechActivityRatio: null,
      audioCallbackGapCount: 0,
      longestAudioCallbackGapMs: null,
    },
    ...overrides,
  });