/**
 * FABRIC Type Definitions
 *
 * Core types for NEEDLE log parsing and worker state management.
 */

/**
 * Schema version for the NEEDLE event wire format.
 * Bumped when the canonical NeedleEvent shape changes.
 * Both NEEDLE and FABRIC must agree on this version.
 */
export const NEEDLE_EVENT_SCHEMA_VERSION = 1;

export type LogLevel = 'debug' | 'info' | 'warn' | 'error';

export type WorkerStatus = 'active' | 'idle' | 'error';

/**
 * NEEDLE worker state machine — first-class states emitted by
 * worker.state_transition events. These are the canonical states
 * that replace the coarse WorkerStatus in the UI.
 *
 * BOOTING → SELECTING → CLAIMING → WORKING → CLOSING → STOPPED
 */
export type NeedleState =
  | 'BOOTING'
  | 'SELECTING'
  | 'CLAIMING'
  | 'WORKING'
  | 'CLOSING'
  | 'STOPPED';

/**
 * All valid state transitions in the NEEDLE worker state machine.
 * A worker in BOOTING can only go to SELECTING, etc.
 */
export const VALID_TRANSITIONS: Record<NeedleState, NeedleState[]> = {
  BOOTING:   ['SELECTING'],
  SELECTING: ['CLAIMING', 'STOPPED'],
  CLAIMING:  ['WORKING', 'SELECTING'],
  WORKING:   ['CLOSING', 'SELECTING'],
  CLOSING:   ['SELECTING', 'STOPPED'],
  STOPPED:   ['BOOTING'],
};

/**
 * Map a NeedleState to the coarser WorkerStatus for backward compatibility.
 */
export function needleStateToStatus(state: NeedleState): WorkerStatus {
  switch (state) {
    case 'BOOTING':
    case 'SELECTING':
    case 'CLAIMING':
    case 'WORKING':
      return 'active';
    case 'CLOSING':
      return 'active';
    case 'STOPPED':
      return 'idle';
  }
}

/**
 * All event types emitted by NEEDLE's telemetry pipeline.
 * Format: category.action — matches NEEDLE's EventKind::event_type() mapping.
 *
 * Note: This is a non-exhaustive list of known event types for documentation.
 * The parser accepts any string for event_type to forward-compat with new NEEDLE versions.
 */
export type NeedleEventType =
  // Worker lifecycle
  | 'worker.booting'
  | 'worker.started'
  | 'worker.stopped'
  | 'worker.errored'
  | 'worker.exhausted'
  | 'worker.idle'
  | 'worker.idle_sleep_completed'
  | 'worker.idle_sleep_entered'
  | 'worker.state_transition'
  | 'worker.queue_empty'
  | 'worker.boot.timeout'
  | 'worker.handling.timeout'
  | 'worker.upgrade.detected'
  | 'worker.upgrade.completed'
  // Initialization
  | 'init.step.started'
  | 'init.step.completed'
  // Strand lifecycle
  | 'strand.evaluated'
  | 'strand.skipped'
  // Bead claim lifecycle
  | 'bead.claim.attempted'
  | 'bead.claim.succeeded'
  | 'bead.claim.race_lost'
  | 'bead.claim.race_lost_skipped'
  | 'bead.claim.failed'
  // Bead lifecycle
  | 'bead.released'
  | 'bead.release.failed'
  | 'bead.completed'
  | 'bead.orphaned'
  // Bead mitosis
  | 'bead.mitosis.evaluated'
  | 'bead.mitosis.split'
  | 'bead.mitosis.skipped'
  // Bead unravel (alternatives)
  | 'bead.unravel.analyzed'
  | 'bead.unravel.skipped'
  // Agent lifecycle
  | 'agent.dispatched'
  | 'agent.completed'
  | 'agent.transform.spawned'
  | 'agent.transform.exited'
  | 'agent.transform.skipped'
  // Build lifecycle
  | 'build.timeout'
  | 'build.heartbeat'
  // Outcome handling
  | 'outcome.classified'
  | 'outcome.handled'
  // Heartbeat & peer detection
  | 'heartbeat.emitted'
  | 'peer.stale'
  | 'peer.crashed'
  // Health checks
  | 'health.check'
  // Mend (maintenance cycle)
  | 'mend.orphaned_lock_removed'
  | 'mend.dependency_cleaned'
  | 'mend.db_repaired'
  | 'mend.db_rebuilt'
  | 'mend.cycle_summary'
  | 'mend.trace_cleanup'
  | 'mend.learning_cleanup'
  | 'mend.idle_worker_flagged'
  | 'mend.worker_deregistered'
  | 'mend.orphaned_heartbeat_removed'
  | 'mend.dependency_removed'
  | 'mend.bead_release_failed'
  | 'mend.dependency_cleanup_failed'
  | 'mend.lock_remove_failed'
  | 'mend.rate_limit_cleaned'
  | 'mend.rate_limit_provider_removed'
  | 'mend.rate_limit_provider_reset'
  | 'mend.zero_activity_log_cleaned'
  // Effort & budget
  | 'effort.recorded'
  | 'budget.warning'
  | 'budget.stop'
  // Rate limiting
  | 'rate_limit.wait'
  | 'rate_limit.allowed'
  // Verification
  | 'verification.failed'
  | 'verification.passed'
  // Reflect (drift detection & decision mining)
  | 'reflect.started'
  | 'reflect.consolidated'
  | 'reflect.skipped'
  | 'reflect.transcripts_read'
  | 'reflect.drift_detected'
  | 'reflect.drift_promoted'
  | 'reflect.decision_extracted'
  | 'reflect.adr_created'
  | 'reflect.learning_promoted'
  | 'reflect.learning_deduplicated'
  | 'reflect.claudemd_written'
  // Drift detection
  | 'drift.started'
  | 'drift.completed'
  | 'drift.skipped'
  | 'drift.report_written'
  // Decision detection
  | 'decision.started'
  | 'decision.completed'
  | 'decision.skipped'
  // Pulse (health monitoring)
  | 'pulse.scanner_started'
  | 'pulse.scanner_completed'
  | 'pulse.scanner_failed'
  | 'pulse.bead_created'
  | 'pulse.skipped'
  // Rollback
  | 'rollback.completed'
  // Canary deployment
  | 'canary.started'
  | 'canary.suite_completed'
  | 'canary.promoted'
  | 'canary.rejected'
  // Transform lifecycle
  | 'transform.started'
  | 'transform.completed'
  | 'transform.failed'
  | 'transform.skipped'
  // Telemetry internal
  | 'telemetry.sink_error'
  | 'telemetry.otlp.dropped'
  | 'telemetry.otlp.shutdown_timeout';

// ============================================
// Canonical NeedleEvent (wire schema)
// ============================================

/**
 * Canonical event shape emitted by NEEDLE over JSONL and OTLP.
 * This is the contract between NEEDLE and FABRIC — versioned via NEEDLE_EVENT_SCHEMA_VERSION.
 *
 * Ordering: sort by (worker_id, sequence), NOT by timestamp.
 * Wall clocks skew across hosts; sequence is the worker's monotonic counter.
 */
export interface NeedleEvent {
  /** RFC3339 timestamp — display only, NOT authoritative for ordering */
  timestamp: string;

  /** Event taxonomy string, e.g. "worker.started", "bead.claimed" */
  event_type: NeedleEventType | string;

  /** Worker identifier (e.g. "tcb-alpha") */
  worker_id: string;

  /** Session identifier grouping a worker's lifetime events */
  session_id: string;

  /** Per-worker monotonic counter — authoritative for ordering */
  sequence: number;

  /** Present when event pertains to a specific bead */
  bead_id?: string;

  /** Event-specific payload */
  data: Record<string, unknown>;
}

// ============================================
// Conversation Event Types
// ============================================

/**
 * Role in a conversation
 */
export type ConversationRole = 'system' | 'user' | 'assistant' | 'tool';

/**
 * Type of conversation event
 */
export type ConversationEventType =
  | 'prompt'        // User input/prompt
  | 'response'      // Assistant response text
  | 'thinking'      // Internal reasoning/thinking block
  | 'tool_call'     // Tool being called with arguments
  | 'tool_result';  // Result from a tool call

/**
 * Base interface for all conversation events
 */
export interface ConversationEventBase {
  /** Unique event identifier */
  id: string;

  /** Type of conversation event */
  type: ConversationEventType;

  /** Role in conversation */
  role: ConversationRole;

  /** Unix timestamp in milliseconds */
  ts: number;

  /** Worker identifier */
  worker: string;

  /** Associated bead/task ID (if any) */
  bead?: string;

  /** Sequence number within the conversation */
  sequence: number;

  /** Token count for this event (if available) */
  tokens?: number;
}

/**
 * User prompt event
 */
export interface PromptEvent extends ConversationEventBase {
  type: 'prompt';
  role: 'user';

  /** The user's prompt text */
  content: string;

  /** Whether this is a continuation of a previous prompt */
  isContinuation?: boolean;
}

/**
 * Assistant response event
 */
export interface ResponseEvent extends ConversationEventBase {
  type: 'response';
  role: 'assistant';

  /** The response text */
  content: string;

  /** Whether the response is truncated */
  isTruncated?: boolean;

  /** Model used for this response */
  model?: string;

  /** Stop reason (if available) */
  stopReason?: 'end_turn' | 'max_tokens' | 'stop_sequence' | 'tool_use';
}

/**
 * Thinking/reasoning block event
 */
export interface ThinkingEvent extends ConversationEventBase {
  type: 'thinking';
  role: 'assistant';

  /** The thinking content */
  content: string;

  /** Whether thinking is truncated */
  isTruncated?: boolean;

  /** Duration of thinking in ms (if available) */
  durationMs?: number;
}

/**
 * Tool argument types
 */
export type ToolArgValue = string | number | boolean | null | ToolArgValue[] | { [key: string]: ToolArgValue };

/**
 * Tool call event
 */
export interface ToolCallEvent extends ConversationEventBase {
  type: 'tool_call';
  role: 'assistant';

  /** Tool name */
  tool: string;

  /** Tool arguments */
  args: Record<string, ToolArgValue>;

  /** Tool call ID (for correlating with results) */
  toolCallId?: string;

  /** Human-readable summary of the call */
  summary?: string;
}

/**
 * Tool result event
 */
export interface ToolResultEvent extends ConversationEventBase {
  type: 'tool_result';
  role: 'tool';

  /** Tool name */
  tool: string;

  /** Tool call ID this is a response to */
  toolCallId?: string;

  /** Result content (may be truncated) */
  content: string;

  /** Whether the tool call succeeded */
  success: boolean;

  /** Error message if failed */
  error?: string;

  /** Duration of tool call in ms */
  durationMs?: number;

  /** Whether the result is truncated */
  isTruncated?: boolean;

  /** Size of full result in bytes (for context) */
  resultSize?: number;
}

/**
 * Union type for all conversation events
 */
export type ConversationEvent =
  | PromptEvent
  | ResponseEvent
  | ThinkingEvent
  | ToolCallEvent
  | ToolResultEvent;

/**
 * A complete conversation session
 */
export interface ConversationSession {
  /** Session identifier */
  id: string;

  /** Worker ID */
  workerId: string;

  /** Associated bead ID (if any) */
  beadId?: string;

  /** Start timestamp */
  startTime: number;

  /** End timestamp (if complete) */
  endTime?: number;

  /** All events in chronological order */
  events: ConversationEvent[];

  /** Total token count */
  totalTokens: number;

  /** Number of turns */
  turnCount: number;

  /** Tools used in this session */
  toolsUsed: string[];

  /** Whether the session is still active */
  isActive: boolean;
}

/**
 * Options for parsing conversation events
 */
export interface ConversationParseOptions {
  /** Maximum content length before truncation */
  maxContentLength?: number;

  /** Include thinking blocks */
  includeThinking?: boolean;

  /** Include tool results */
  includeToolResults?: boolean;

  /** Truncate tool results longer than this */
  maxToolResultLength?: number;
}

// ============================================
// Core Log Event Types
// ============================================

export interface LogEvent {
  /** Unix timestamp in milliseconds — display only, NOT authoritative for ordering */
  ts: number;

  /** Worker identifier (e.g., 'w-abc123') */
  worker: string;

  /** Per-worker monotonic counter — authoritative for ordering (from NeedleEvent.sequence) */
  sequence?: number;

  /** Log level */
  level: LogLevel;

  /** Log message */
  msg: string;

  /** Optional: Tool that was called */
  tool?: string;

  /** Optional: File path being operated on */
  path?: string;

  /** Optional: Bead/task identifier */
  bead?: string;

  /** Optional: Duration in milliseconds */
  duration_ms?: number;

  /** Optional: Error details */
  error?: string;

  /** NEEDLE session identifier (e.g. 'needle-claude-anthropic-sonnet-alpha') */
  session?: string;

  /** AI provider extracted from NEEDLE worker string (e.g. 'anthropic', 'openai') */
  provider?: string;

  /** AI model identifier extracted from NEEDLE worker string (e.g. 'sonnet', 'gpt-4o') */
  model?: string;

  /** Any additional fields */
  [key: string]: unknown;
}

/**
 * Compare two LogEvents by (worker, sequence), falling back to ts.
 *
 * Sequence is the authoritative ordering key within a worker (monotonic counter
 * from NEEDLE). Timestamp is used only as a display fallback for legacy events
 * that lack a sequence number.
 */
export function compareEventsBySequence(a: LogEvent, b: LogEvent): number {
  const seqA = a.sequence != null && a.sequence >= 0 ? a.sequence : null;
  const seqB = b.sequence != null && b.sequence >= 0 ? b.sequence : null;

  if (seqA !== null && seqB !== null) {
    if (a.worker !== b.worker) return a.worker.localeCompare(b.worker);
    return seqA - seqB;
  }

  return a.ts - b.ts;
}

export interface WorkerInfo {
  /** Worker identifier */
  id: string;

  /** Current status (coarse — derived from needleState) */
  status: WorkerStatus;

  /** Current NEEDLE state machine state (fine-grained) */
  needleState?: NeedleState;

  /** Timestamp of the last state transition (ms since epoch) */
  lastStateTransition?: number;

  /** Last event received */
  lastEvent?: LogEvent;

  /** Total beads completed */
  beadsCompleted: number;

  /** First seen timestamp */
  firstSeen: number;

  /** Last activity timestamp */
  lastActivity: number;

  /** Files currently being modified by this worker */
  activeFiles: string[];

  /** Whether this worker is involved in any collisions */
  hasCollision: boolean;

  /** Current bead/task being worked on */
  activeBead?: string;

  /** Current bead from bead.claim.succeeded, cleared on bead.released */
  currentBead: string | null;

  /** Directories this worker is active in */
  activeDirectories: string[];

  /** All collision types this worker is involved in */
  collisionTypes: ('file' | 'bead' | 'task')[];

  /** Total number of events received for this worker */
  eventCount: number;

  /** Whether the worker appears stuck (gap-based detection) */
  stuck?: boolean;

  /** Human-readable reason the worker is stuck */
  stuckReason?: string;
}

export interface EventFilter {
  /** Filter by worker ID */
  worker?: string;

  /** Filter by log level */
  level?: LogLevel;

  /** Filter by bead ID */
  bead?: string;

  /** Filter by event type (glob pattern, e.g. "bead.*") */
  eventType?: string;

  /** Filter by file path */
  path?: string;

  /** Time range start (Unix timestamp) */
  since?: number;

  /** Time range end (Unix timestamp) */
  until?: number;
}

/**
 * File collision event - when multiple workers modify the same file concurrently
 */
export interface FileCollision {
  /** File path being contested */
  path: string;

  /** Workers involved in the collision */
  workers: string[];

  /** Timestamp when collision was detected */
  detectedAt: number;

  /** Events that triggered the collision */
  events: LogEvent[];

  /** Whether the collision is still active */
  isActive: boolean;
}

/**
 * Bead collision - when multiple workers work on the same bead/task
 */
export interface BeadCollision {
  /** Bead ID being contested */
  beadId: string;

  /** Workers working on this bead */
  workers: string[];

  /** Timestamp when collision was detected */
  detectedAt: number;

  /** Events that triggered the collision */
  events: LogEvent[];

  /** Whether the collision is still active */
  isActive: boolean;

  /** Collision severity based on operation types */
  severity: 'warning' | 'critical';
}

/**
 * Task collision - when workers work on tasks that may conflict
 */
export interface TaskCollision {
  /** Type of collision */
  type: 'directory' | 'related_files' | 'dependency';

  /** Human-readable description */
  description: string;

  /** Workers involved */
  workers: string[];

  /** Affected paths/beads */
  affectedResources: string[];

  /** Timestamp when collision was detected */
  detectedAt: number;

  /** Whether the collision is still active */
  isActive: boolean;

  /** Risk level */
  riskLevel: 'low' | 'medium' | 'high';
}

/**
 * Collision alert for user notification
 */
export interface CollisionAlert {
  /** Unique alert ID */
  id: string;

  /** Alert type */
  type: 'file' | 'bead' | 'task';

  /** Severity level */
  severity: 'info' | 'warning' | 'error' | 'critical';

  /** Human-readable title */
  title: string;

  /** Detailed description */
  description: string;

  /** Workers involved */
  workers: string[];

  /** Timestamp when alert was generated */
  timestamp: number;

  /** Whether the alert has been acknowledged */
  acknowledged: boolean;

  /** Related collision data */
  collision: FileCollision | BeadCollision | TaskCollision;

  /** Suggested resolution */
  suggestion?: string;
}

export interface EventStore {
  /** Add an event to the store */
  add(event: LogEvent): void;

  /** Query events with optional filter */
  query(filter?: EventFilter): LogEvent[];

  /** Query events sorted by (worker, sequence), falling back to ts */
  queryOrdered(filter?: EventFilter): LogEvent[];

  /** Get worker info */
  getWorker(workerId: string): WorkerInfo | undefined;

  /** Get all workers */
  getWorkers(): WorkerInfo[];

  /** Clear all events */
  clear(): void;

  /** Get all active collisions */
  getCollisions(): FileCollision[];

  /** Get collisions for a specific worker */
  getWorkerCollisions(workerId: string): FileCollision[];
}

// ============================================
// Error Grouping Types
// ============================================

/**
 * Error fingerprint - used to identify similar errors
 */
export interface ErrorFingerprint {
  /** Normalized pattern signature (e.g., "ECONNREFUSED_*:*" for connection errors) */
  signature: string;

  /** Category of error (network, permission, validation, etc.) */
  category: ErrorCategory;

  /** Original error message (first occurrence) */
  sampleMessage: string;

  /** Hash of the signature for quick comparison */
  hash: string;
}

/**
 * Error categories for grouping
 */
export type ErrorCategory =
  | 'network'      // Connection errors, timeouts, DNS issues
  | 'permission'   // Auth failures, access denied
  | 'validation'   // Invalid input, schema errors
  | 'resource'     // Out of memory, disk full, quota exceeded
  | 'not_found'    // File not found, 404 errors
  | 'timeout'      // Operation timed out
  | 'syntax'       // Parse errors, malformed data
  | 'tool'         // Tool-specific failures
  | 'unknown';     // Uncategorized errors

/**
 * Grouped error - clusters similar errors together
 */
export interface ErrorGroup {
  /** Unique group ID */
  id: string;

  /** Fingerprint identifying this group */
  fingerprint: ErrorFingerprint;

  /** All error events in this group */
  events: LogEvent[];

  /** First occurrence timestamp */
  firstSeen: number;

  /** Most recent occurrence timestamp */
  lastSeen: number;

  /** Number of occurrences */
  count: number;

  /** Workers that have encountered this error */
  affectedWorkers: string[];

  /** Whether this error group is currently active (seen recently) */
  isActive: boolean;

  /** Severity based on frequency and recency */
  severity: 'low' | 'medium' | 'high' | 'critical';
}

/**
 * Options for error grouping
 */
export interface ErrorGroupingOptions {
  /** Time window to consider errors as active (ms), default 5 minutes */
  activeWindowMs?: number;

  /** Minimum occurrences for high severity */
  highSeverityThreshold?: number;

  /** Minimum occurrences for critical severity */
  criticalSeverityThreshold?: number;

  /** Maximum groups to track */
  maxGroups?: number;
}

// ============================================
// Session Replay Types
// ============================================

export type ReplaySpeed = 0.5 | 1 | 2 | 5 | 10;

export type ReplayState = 'idle' | 'playing' | 'paused' | 'ended';

export interface ReplaySession {
  /** Unique session identifier */
  id: string;

  /** Source log file path */
  sourcePath: string;

  /** Total events in the session */
  totalEvents: number;

  /** Current playback position (event index) */
  currentIndex: number;

  /** Playback state */
  state: ReplayState;

  /** Playback speed multiplier */
  speed: ReplaySpeed;

  /** Start timestamp of session (first event) */
  startTime: number;

  /** End timestamp of session (last event) */
  endTime: number;

  /** Filter applied during replay */
  filter?: EventFilter;
}

export interface ReplayControls {
  /** Start or resume playback */
  play(): void;

  /** Pause playback */
  pause(): void;

  /** Toggle play/pause */
  toggle(): void;

  /** Step to next event */
  stepForward(): void;

  /** Step to previous event */
  stepBackward(): void;

  /** Jump to specific event index */
  seekTo(index: number): void;

  /** Set playback speed */
  setSpeed(speed: ReplaySpeed): void;

  /** Stop and reset replay */
  reset(): void;
}

// ============================================
// File Heatmap Types
// ============================================

/**
 * Heat level for a file based on modification frequency
 */
export type HeatLevel = 'cold' | 'warm' | 'hot' | 'critical';

/**
 * Worker contribution to a file's modification history
 */
export interface WorkerFileContribution {
  /** Worker ID */
  workerId: string;

  /** Number of modifications by this worker */
  modifications: number;

  /** Last modification timestamp */
  lastModified: number;

  /** Percentage of total modifications (0-100) */
  percentage: number;
}

/**
 * Single file entry in the heatmap
 */
export interface FileHeatmapEntry {
  /** File path */
  path: string;

  /** Total modification count */
  modifications: number;

  /** Heat level based on frequency */
  heatLevel: HeatLevel;

  /** Workers who have modified this file */
  workers: WorkerFileContribution[];

  /** First modification timestamp */
  firstModified: number;

  /** Most recent modification timestamp */
  lastModified: number;

  /** Whether this file is currently being modified by multiple workers */
  hasCollision: boolean;

  /** Number of workers currently active on this file */
  activeWorkers: number;

  /** Average time between modifications (ms) */
  avgModificationInterval: number;
}

/**
 * Options for heatmap generation
 */
export interface HeatmapOptions {
  /** Minimum modifications to be included in heatmap */
  minModifications?: number;

  /** Maximum entries to return */
  maxEntries?: number;

  /** Sort by: 'modifications' | 'recent' | 'workers' | 'collisions' */
  sortBy?: 'modifications' | 'recent' | 'workers' | 'collisions';

  /** Filter by directory prefix */
  directoryFilter?: string;

  /** Only show files with collisions */
  collisionsOnly?: boolean;
}

/**
 * Statistics for the entire file heatmap
 */
export interface FileHeatmapStats {
  /** Total files being tracked */
  totalFiles: number;

  /** Total modifications across all files */
  totalModifications: number;

  /** Files with collisions */
  collisionFiles: number;

  /** Files currently being modified */
  activeFiles: number;

  /** Heat level distribution */
  heatDistribution: Record<HeatLevel, number>;

  /** Most active directory */
  mostActiveDirectory: string;

  /** Average modifications per file */
  avgModificationsPerFile: number;
}

/**
 * Heatmap snapshot at a specific point in time
 */
export interface HeatmapSnapshot {
  /** Timestamp of this snapshot */
  timestamp: number;

  /** Heatmap entries at this point in time */
  entries: FileHeatmapEntry[];

  /** Statistics at this point in time */
  stats: FileHeatmapStats;
}

/**
 * Time-series heatmap data for animation
 */
export interface HeatmapTimelapse {
  /** Start timestamp of the timelapse */
  startTimestamp: number;

  /** End timestamp of the timelapse */
  endTimestamp: number;

  /** Time interval between snapshots (ms) */
  interval: number;

  /** Total number of snapshots */
  totalSnapshots: number;

  /** Array of heatmap snapshots */
  snapshots: HeatmapSnapshot[];
}

/**
 * Options for generating timelapse data
 */
export interface TimelapseOptions {
  /** Start timestamp (defaults to oldest modification) */
  startTimestamp?: number;

  /** End timestamp (defaults to now) */
  endTimestamp?: number;

  /** Number of snapshots to generate (default 30) */
  snapshotCount?: number;

  /** Minimum modifications to be included */
  minModifications?: number;

  /** Maximum entries per snapshot */
  maxEntries?: number;

  /** Sort mode for snapshots */
  sortBy?: 'modifications' | 'recent' | 'workers' | 'collisions';

  /** Filter by directory prefix */
  directoryFilter?: string;

  /** Only show files with collisions */
  collisionsOnly?: boolean;
}

// ============================================
// File Anomaly Detection Types
// ============================================

/**
 * Types of file activity anomalies
 */
export type AnomalyType =
  | 'config_modification'      // Config file modified outside expected context
  | 'high_frequency'           // Unusually high modification rate
  | 'burst_activity'           // Sudden burst of modifications
  | 'unusual_pattern'          // Activity pattern outside normal bounds
  | 'sensitive_file';          // Sensitive file (secrets, credentials) touched

/**
 * Severity level for anomalies
 */
export type AnomalySeverity = 'info' | 'warning' | 'critical';

/**
 * Detected file anomaly
 */
export interface FileAnomaly {
  /** File path with anomaly */
  path: string;

  /** Type of anomaly detected */
  type: AnomalyType;

  /** Severity level */
  severity: AnomalySeverity;

  /** Human-readable description */
  message: string;

  /** When the anomaly was detected */
  detectedAt: number;

  /** Supporting data for the anomaly */
  details: {
    /** Modification count involved */
    modifications?: number;

    /** Workers involved */
    workers?: string[];

    /** Time span of anomalous activity (ms) */
    timeSpan?: number;

    /** Expected normal value */
    expectedValue?: number;

    /** Actual observed value */
    actualValue?: number;

    /** Additional context */
    context?: Record<string, unknown>;
  };
}

/**
 * Options for anomaly detection
 */
export interface AnomalyDetectionOptions {
  /** Minimum modifications to consider for anomaly detection */
  minModifications?: number;

  /** Threshold multiplier for high-frequency detection (e.g., 3 = 3x average) */
  frequencyThreshold?: number;

  /** Time window for burst detection (ms) */
  burstWindow?: number;

  /** Minimum burst count to trigger anomaly */
  burstThreshold?: number;

  /** Custom patterns for sensitive files */
  sensitivePatterns?: string[];
}

/**
 * Statistics for anomaly detection
 */
export interface AnomalyStats {
  /** Total anomalies detected */
  totalAnomalies: number;

  /** Count by type */
  byType: Record<AnomalyType, number>;

  /** Count by severity */
  bySeverity: Record<AnomalySeverity, number>;

  /** Files with most anomalies */
  topAnomalyFiles: Array<{
    path: string;
    count: number;
    types: AnomalyType[];
  }>;
}

// ============================================
// Dependency DAG Types
// ============================================

/**
 * Bead status type
 */
export type BeadStatus = 'open' | 'in_progress' | 'blocked' | 'completed' | 'closed' | 'deferred';

/**
 * Single node in the dependency graph
 */
export interface BeadNode {
  /** Bead ID (e.g., 'bd-abc123') */
  id: string;

  /** Bead title */
  title: string;

  /** Current status */
  status: BeadStatus;

  /** Priority level (0-4) */
  priority: number;

  /** Depth in the dependency tree (0 = root) */
  depth: number;

  /** Number of dependents (beads that depend on this) */
  dependentCount: number;

  /** Number of dependencies (beads this depends on) */
  dependencyCount: number;

  /** Whether this is on the critical path */
  isCriticalPath: boolean;

  /** Estimated effort (if available) */
  estimatedEffort?: number;
}

/**
 * Edge in the dependency graph
 */
export interface DependencyEdge {
  /** Source bead ID (the one that depends) */
  from: string;

  /** Target bead ID (the dependency) */
  to: string;

  /** Whether this edge is part of the critical path */
  isCritical: boolean;
}

/**
 * Connected component in the dependency graph
 */
export interface DagComponent {
  /** All nodes in this component */
  nodes: BeadNode[];

  /** All edges in this component */
  edges: DependencyEdge[];

  /** Root nodes (no incoming edges) */
  roots: string[];

  /** Whether this component contains cycles */
  hasCycle: boolean;

  /** Critical path through this component (bead IDs) */
  criticalPath: string[];

  /** Total depth of the component */
  maxDepth: number;
}

/**
 * Full dependency graph
 */
export interface DependencyGraph {
  /** All connected components */
  components: DagComponent[];

  /** Total nodes across all components */
  totalNodes: number;

  /** Total edges across all components */
  totalEdges: number;

  /** Total components */
  totalComponents: number;

  /** Overall critical path (longest path across all components) */
  globalCriticalPath: string[];

  /** Timestamp when graph was generated */
  generatedAt: number;
}

/**
 * Options for DAG visualization
 */
export interface DagOptions {
  /** Filter by status */
  status?: BeadStatus | 'all';

  /** Filter by priority range */
  minPriority?: number;
  maxPriority?: number;

  /** Show only critical path */
  criticalOnly?: boolean;

  /** Maximum depth to display */
  maxDepth?: number;

  /** Sort order: 'priority' | 'depth' | 'dependents' */
  sortBy?: 'priority' | 'depth' | 'dependents';

  /** Include closed/completed beads */
  includeClosed?: boolean;
}

/**
 * Statistics about the dependency graph
 */
export interface DagStats {
  /** Total beads tracked */
  totalBeads: number;

  /** Blocked beads count */
  blockedCount: number;

  /** Ready beads (unblocked, open) */
  readyCount: number;

  /** Average dependencies per bead */
  avgDependencies: number;

  /** Average dependents per bead */
  avgDependents: number;

  /** Maximum depth found */
  maxDepth: number;

  /** Number of cycles detected */
  cycleCount: number;

  /** Critical path length */
  criticalPathLength: number;

  /** Beads on critical path */
  criticalPathBeads: number;
}

// ============================================
// Span-based DAG Types (OTLP span hierarchy)
// ============================================

/**
 * A node in the span DAG, built from paired .started/.finished NeedleEvents
 * derived from OTLP spans. Parent-child relationships come from
 * parent_span_id rather than bead dependencies.
 */
export interface SpanNode {
  /** OTLP span ID */
  span_id: string;

  /** OTLP trace ID */
  trace_id: string;

  /** Parent span ID (undefined for root spans) */
  parent_span_id?: string;

  /** Span name (e.g. "bead.lifecycle", "tool.call", "llm.request") */
  name: string;

  /** Worker that emitted this span */
  worker_id: string;

  /** Associated bead ID (if this is a bead lifecycle span) */
  bead_id?: string;

  /** Start timestamp (ms from .started event) */
  start_ts?: number;

  /** End timestamp (ms from .finished event) */
  end_ts?: number;

  /** Duration in ms */
  duration_ms?: number;

  /** Span completion status */
  status: 'ok' | 'error' | 'unknown';

  /** Child spans (populated during tree construction) */
  children: SpanNode[];

  /** Remaining span attributes */
  attributes: Record<string, unknown>;
}

/**
 * A span hierarchy DAG built from OTLP span events.
 * Unlike the bead DependencyGraph (which uses br graph --json),
 * the SpanDag is built from the live event stream using parent_span_id
 * for parent-child linkage.
 */
export interface SpanDag {
  /** Root spans (no parent_span_id or orphaned) */
  roots: SpanNode[];

  /** All spans indexed by span_id */
  allSpans: Map<string, SpanNode>;

  /** Spans grouped by trace_id */
  traces: Map<string, SpanNode[]>;
}

// ============================================
// Git Event Types
// ============================================

/**
 * Type of git event
 */
export type GitEventType =
  | 'status'   // Git status output (staged, unstaged, untracked)
  | 'commit'   // Git commit
  | 'branch'   // Branch information
  | 'diff';    // Git diff output

/**
 * File status in git
 */
export type GitFileStatus =
  | 'added'
  | 'modified'
  | 'deleted'
  | 'renamed'
  | 'copied'
  | 'untracked'
  | 'unmerged';

/**
 * Single file change in git
 */
export interface GitFileChange {
  /** File path */
  path: string;

  /** Status of the file */
  status: GitFileStatus;

  /** Original path (for renames) */
  originalPath?: string;

  /** Staging area status */
  staged: boolean;
}

/**
 * Base interface for all git events
 */
export interface GitEventBase {
  /** Unique event identifier */
  id: string;

  /** Type of git event */
  type: GitEventType;

  /** Unix timestamp in milliseconds */
  ts: number;

  /** Worker identifier */
  worker: string;

  /** Associated bead/task ID (if any) */
  bead?: string;
}

/**
 * Git status event
 */
export interface GitStatusEvent extends GitEventBase {
  type: 'status';

  /** Current branch name */
  branch: string;

  /** Commit hash (HEAD) */
  commit?: string;

  /** Staged file changes */
  staged: GitFileChange[];

  /** Unstaged file changes */
  unstaged: GitFileChange[];

  /** Untracked files */
  untracked: string[];

  /** Commits ahead of remote */
  ahead?: number;

  /** Commits behind remote */
  behind?: number;

  /** Remote tracking branch */
  tracking?: string;
}

/**
 * Git commit event
 */
export interface GitCommitEvent extends GitEventBase {
  type: 'commit';

  /** Commit hash */
  hash: string;

  /** Commit message */
  message: string;

  /** Branch name */
  branch?: string;

  /** Author name */
  author?: string;

  /** Author email */
  email?: string;

  /** Parent commit hash(es) */
  parents?: string[];

  /** Files changed in this commit */
  files?: GitFileChange[];
}

/**
 * Git branch event
 */
export interface GitBranchEvent extends GitEventBase {
  type: 'branch';

  /** Current branch name */
  current: string;

  /** All local branches */
  branches?: string[];

  /** Remote tracking branch */
  tracking?: string;

  /** Commits ahead of tracking */
  ahead?: number;

  /** Commits behind tracking */
  behind?: number;
}

/**
 * Git diff event
 */
export interface GitDiffEvent extends GitEventBase {
  type: 'diff';

  /** Diff target (e.g., 'HEAD', 'origin/main') */
  target: string;

  /** Files with changes */
  files: GitFileChange[];

  /** Total lines added */
  linesAdded: number;

  /** Total lines deleted */
  linesDeleted: number;

  /** Diff content (may be truncated) */
  content?: string;

  /** Whether diff content is truncated */
  isTruncated?: boolean;
}

/**
 * Union type for all git events
 */
export type GitEvent =
  | GitStatusEvent
  | GitCommitEvent
  | GitBranchEvent
  | GitDiffEvent;

/**
 * Options for parsing git events
 */
export interface GitParseOptions {
  /** Maximum diff content length before truncation */
  maxDiffLength?: number;

  /** Include file change details */
  includeFileChanges?: boolean;

  /** Maximum files to track in a single event */
  maxFiles?: number;
}

// ============================================
// PR Preview Types
// ============================================

/**
 * File change with diff statistics
 */
export interface PRFileChange extends GitFileChange {
  /** Lines added in this file */
  linesAdded: number;

  /** Lines deleted in this file */
  linesDeleted: number;

  /** Worker who made the change */
  worker?: string;
}

/**
 * Upstream commit that might conflict
 */
export interface UpstreamCommit {
  /** Commit hash */
  hash: string;

  /** Commit message */
  message: string;

  /** Author name */
  author?: string;

  /** Files changed in this commit */
  files: string[];

  /** Timestamp */
  ts: number;
}

/**
 * Potential conflict information
 */
export interface PotentialConflict {
  /** Whether there are upstream commits */
  hasUpstreamCommits: boolean;

  /** Number of upstream commits */
  upstreamCommitCount: number;

  /** Upstream commits that might conflict */
  upstreamCommits: UpstreamCommit[];

  /** Files that might have conflicts */
  conflictingFiles: string[];

  /** Whether rebase is recommended */
  rebaseRecommended: boolean;

  /** Reason for rebase recommendation */
  rebaseReason?: string;
}

/**
 * PR Preview data
 */
export interface PRPreview {
  /** Generated PR title */
  title: string;

  /** Generated PR description */
  description: string;

  /** Commit message preview */
  commitMessage: string;

  /** All files changed */
  files: PRFileChange[];

  /** Total lines added */
  totalLinesAdded: number;

  /** Total lines deleted */
  totalLinesDeleted: number;

  /** Number of files changed */
  filesChanged: number;

  /** Potential conflicts with upstream */
  conflicts: PotentialConflict;

  /** Source branch */
  sourceBranch: string;

  /** Target branch (usually main) */
  targetBranch: string;

  /** Number of commits ahead */
  ahead: number;

  /** Number of commits behind */
  behind: number;

  /** Whether there are uncommitted changes */
  hasUncommittedChanges: boolean;

  /** Timestamp when preview was generated */
  generatedAt: number;
}

// ============================================
// Cross-Reference Types
// ============================================

/**
 * Type of entity that can be cross-referenced
 */
export type CrossReferenceEntityType = 'event' | 'bead' | 'file' | 'worker' | 'session';

/**
 * A single cross-reference link
 */
export interface CrossReferenceLink {
  /** Unique link ID */
  id: string;

  /** Source entity type */
  sourceType: CrossReferenceEntityType;

  /** Source entity ID */
  sourceId: string;

  /** Target entity type */
  targetType: CrossReferenceEntityType;

  /** Target entity ID */
  targetId: string;

  /** Relationship type */
  relationship: CrossReferenceRelationship;

  /** Strength of the relationship (0-1) */
  strength: number;

  /** When this link was detected */
  detectedAt: number;

  /** Optional context about why this link exists */
  context?: string;
}

/**
 * Types of relationships between entities
 */
export type CrossReferenceRelationship =
  | 'same_bead'         // Events working on the same bead/task
  | 'same_file'         // Events modifying the same file
  | 'same_worker'       // Events from the same worker
  | 'temporal_proximity' // Events happening close together in time
  | 'same_session'      // Events in the same worker session
  | 'dependency'        // One bead depends on another
  | 'collision'         // Workers colliding on the same file
  | 'parent_child'      // Hierarchical relationship
  | 'error_related'     // Events related to the same error
  | 'tool_sequence';    // Tool calls that form a logical sequence

/**
 * A cross-reference entity with its links
 */
export interface CrossReferenceEntity {
  /** Entity type */
  type: CrossReferenceEntityType;

  /** Entity ID */
  id: string;

  /** Human-readable label */
  label: string;

  /** All links from this entity */
  outgoingLinks: CrossReferenceLink[];

  /** All links to this entity */
  incomingLinks: CrossReferenceLink[];

  /** Related entities grouped by type */
  relatedEntities: Map<CrossReferenceEntityType, CrossReferenceLink[]>;

  /** Total link count */
  linkCount: number;

  /** Most recent link timestamp */
  lastLinkedAt: number;

  /** First seen timestamp */
  firstSeen: number;

  /** Number of occurrences */
  occurrenceCount: number;
}

/**
 * Options for cross-reference queries
 */
export interface CrossReferenceQueryOptions {
  /** Filter by source entity type */
  sourceType?: CrossReferenceEntityType;

  /** Filter by target entity type */
  targetType?: CrossReferenceEntityType;

  /** Filter by relationship type */
  relationship?: CrossReferenceRelationship;

  /** Minimum relationship strength */
  minStrength?: number;

  /** Time range start */
  since?: number;

  /** Time range end */
  until?: number;

  /** Maximum results */
  limit?: number;
}

/** Alias for backward compatibility */
export type CrossReferenceFilter = CrossReferenceQueryOptions;

/**
 * Statistics about cross-references
 */
export interface CrossReferenceStats {
  /** Total links tracked */
  totalLinks: number;

  /** Total entities tracked */
  totalEntities: number;

  /** Links by relationship type */
  byRelationship: Record<CrossReferenceRelationship, number>;

  /** Entities by type */
  byEntityType: Record<CrossReferenceEntityType, number>;

  /** Most linked entities */
  mostLinked: CrossReferenceEntity[];

  /** Recent links */
  recentLinks: CrossReferenceLink[];
}

/**
 * A navigation path through cross-references
 */
export interface CrossReferencePath {
  /** Starting entity */
  start: CrossReferenceEntity;

  /** Ending entity */
  end: CrossReferenceEntity;

  /** Path steps */
  steps: CrossReferenceLink[];

  /** Total path length */
  length: number;

  /** Path description */
  description: string;
}

// ============================================
// Recovery Playbook Types
// ============================================

/**
 * Priority level for recovery actions
 */
export type RecoveryPriority = 'immediate' | 'high' | 'normal' | 'low';

/**
 * Type of recovery action
 */
export type RecoveryActionType =
  | 'retry'           // Simple retry the operation
  | 'backoff'         // Retry with exponential backoff
  | 'alternative'     // Use alternative approach
  | 'escalate'        // Escalate to human
  | 'skip'            // Skip and continue
  | 'fix_config'      // Fix configuration
  | 'install_dep'     // Install missing dependency
  | 'fix_permissions' // Fix file permissions
  | 'cleanup'         // Clean up resources
  | 'restart'         // Restart service/process
  | 'investigate';    // Requires further investigation

/**
 * A single recovery action step
 */
export interface RecoveryAction {
  /** Unique action ID */
  id: string;

  /** Action type */
  type: RecoveryActionType;

  /** Human-readable title */
  title: string;

  /** Detailed description of the action */
  description: string;

  /** Priority for ordering actions */
  priority: RecoveryPriority;

  /** Whether this action can be automated */
  automated: boolean;

  /** Command or code snippet to execute (if applicable) */
  command?: string;

  /** Expected outcome */
  expectedOutcome?: string;

  /** Prerequisites before this action */
  prerequisites?: string[];

  /** Risk level of this action */
  riskLevel?: 'safe' | 'moderate' | 'risky';

  /** Estimated time to complete (seconds) */
  estimatedTime?: number;
}

/**
 * A recovery playbook entry mapping error patterns to actions
 */
export interface RecoveryPlaybookEntry {
  /** Unique playbook ID */
  id: string;

  /** Error category this applies to */
  category: ErrorCategory;

  /** Title for this recovery playbook */
  title: string;

  /** Description of the error pattern */
  description: string;

  /** Pattern to match error messages */
  patterns: RegExp[];

  /** Recovery actions in order */
  actions: RecoveryAction[];

  /** When this playbook was created */
  createdAt: number;

  /** When this playbook was last updated */
  updatedAt: number;

  /** Tags for categorization */
  tags: string[];
}

/**
 * A specific recovery suggestion for an error
 */
export interface RecoverySuggestion {
  /** Unique suggestion ID */
  id: string;

  /** The error group this suggestion is for */
  errorGroupId: string;

  /** The playbook entry this came from (if any) */
  playbookId?: string;

  /** Error category */
  category: ErrorCategory;

  /** Title for the suggestion */
  title: string;

  /** Summary of the error */
  errorSummary: string;

  /** Recommended actions in order */
  actions: RecoveryAction[];

  /** When this suggestion was generated */
  generatedAt: number;

  /** Confidence level (0-1) */
  confidence: number;

  /** Related workers affected */
  affectedWorkers: string[];

  /** Similar past errors (if any) */
  relatedErrors?: string[];

  /** Whether this is still relevant */
  isActive: boolean;
}

/**
 * Options for recovery suggestion generation
 */
export interface RecoveryOptions {
  /** Maximum actions to include per suggestion */
  maxActions?: number;

  /** Only include automated actions */
  automatedOnly?: boolean;

  /** Minimum confidence threshold */
  minConfidence?: number;

  /** Filter by category */
  category?: ErrorCategory;

  /** Filter by worker */
  workerId?: string;
}

/**
 * Statistics about recovery suggestions
 */
export interface RecoveryStats {
  /** Total suggestions generated */
  totalSuggestions: number;

  /** Active suggestions */
  activeSuggestions: number;

  /** Suggestions by category */
  byCategory: Record<ErrorCategory, number>;

  /** Automated vs manual actions */
  automatedActions: number;
  manualActions: number;

  /** Average confidence */
  avgConfidence: number;

  /** Most common recovery action types */
  topActionTypes: Array<{ type: RecoveryActionType; count: number }>;
}

// ============================================
// Session Digest Types
// ============================================

/**
 * Bead completion summary
 */
export interface BeadCompletion {
  /** Bead ID */
  beadId: string;

  /** Worker that completed the bead */
  workerId: string;

  /** Completion timestamp */
  completedAt: number;

  /** Duration in milliseconds */
  durationMs?: number;
}

/**
 * File modification summary
 */
export interface FileModificationSummary {
  /** File path */
  path: string;

  /** Number of modifications */
  modifications: number;

  /** Workers who modified this file */
  workers: string[];

  /** Tools used */
  tools: string[];
}

/**
 * Error occurrence in session
 */
export interface ErrorOccurrence {
  /** Error message */
  message: string;

  /** Error category */
  category: ErrorCategory;

  /** Worker that encountered the error */
  workerId: string;

  /** Timestamp */
  timestamp: number;

  /** Error fingerprint */
  fingerprint?: string;
}

/**
 * Worker session summary
 */
export interface WorkerSessionSummary {
  /** Worker ID */
  workerId: string;

  /** Beads completed */
  beadsCompleted: number;

  /** Files modified */
  filesModified: number;

  /** Errors encountered */
  errorsEncountered: number;

  /** Total events */
  totalEvents: number;

  /** Active time in milliseconds */
  activeTimeMs: number;

  /** First activity timestamp */
  firstActivity: number;

  /** Last activity timestamp */
  lastActivity: number;
}

/**
 * Complete session digest
 */
export interface SessionDigest {
  /** Session ID or identifier */
  sessionId: string;

  /** Session start timestamp */
  startTime: number;

  /** Session end timestamp */
  endTime: number;

  /** Total duration in milliseconds */
  durationMs: number;

  /** Beads completed */
  beadsCompleted: BeadCompletion[];

  /** Files modified */
  filesModified: FileModificationSummary[];

  /** Errors encountered */
  errors: ErrorOccurrence[];

  /** Worker summaries */
  workers: WorkerSessionSummary[];

  /** Token usage and cost */
  cost: {
    totalTokens: number;
    inputTokens: number;
    outputTokens: number;
    estimatedCostUsd: number;
  };

  /** Overall statistics */
  stats: {
    totalEvents: number;
    totalWorkers: number;
    totalBeads: number;
    totalFiles: number;
    totalErrors: number;
    avgEventsPerWorker: number;
    avgBeadsPerWorker: number;
  };
}

/**
 * Options for session digest generation
 */
export interface SessionDigestOptions {
  /** Start time filter */
  startTime?: number;

  /** End time filter */
  endTime?: number;

  /** Include only specific workers */
  workers?: string[];

  /** Include error details */
  includeErrors?: boolean;

  /** Include cost breakdown */
  includeCost?: boolean;

  /** Maximum files to list */
  maxFiles?: number;

  /** Maximum errors to list */
  maxErrors?: number;
}

// ============================================
// Worker Analytics Types
// ============================================

/**
 * Time window for aggregation
 */
export type TimeWindow = 'hour' | 'day' | 'week' | 'all';

/**
 * Worker analytics metrics for a specific time period
 */
export interface WorkerMetrics {
  /** Worker ID */
  workerId: string;

  /** Time period start (Unix timestamp) */
  periodStart: number;

  /** Time period end (Unix timestamp) */
  periodEnd: number;

  /** Total beads completed in this period */
  beadsCompleted: number;

  /** Beads per hour (rate) */
  beadsPerHour: number;

  /** Average completion time per bead (milliseconds) */
  avgCompletionTimeMs: number;

  /** Total errors encountered */
  errorCount: number;

  /** Error rate (errors per bead) */
  errorRate: number;

  /** Total cost incurred (USD) */
  totalCostUsd: number;

  /** Cost per bead (USD) */
  costPerBead: number;

  /** Total active time (milliseconds) */
  activeTimeMs: number;

  /** Total idle time (milliseconds) */
  idleTimeMs: number;

  /** Idle percentage (0-100) */
  idlePercentage: number;

  /** Total events processed */
  totalEvents: number;

  /** Total tokens used */
  totalTokens: number;

  /** Tokens per bead */
  tokensPerBead: number;

  /** Efficiency score (0-1, calculated from active time vs idle time) */
  efficiencyScore: number;

  /** Performance trend data */
  trend?: {
    direction: 'improving' | 'declining' | 'stable';
    confidence: number;
    factors: string[];
  };
}

/**
 * Time-series data point for worker metrics
 */
export interface MetricsDataPoint {
  /** Timestamp of this data point */
  timestamp: number;

  /** Worker ID */
  workerId: string;

  /** Metrics snapshot at this time */
  metrics: Partial<WorkerMetrics>;
}

/**
 * Worker performance trend
 */
export interface PerformanceTrend {
  /** Worker ID */
  workerId: string;

  /** Metric being tracked */
  metric: keyof WorkerMetrics;

  /** Time-series data points */
  dataPoints: MetricsDataPoint[];

  /** Trend direction: 'improving' | 'declining' | 'stable' */
  trend: 'improving' | 'declining' | 'stable';

  /** Percentage change from first to last data point */
  changePercent: number;

  /** Average value across all data points */
  average: number;

  /** Minimum value */
  min: number;

  /** Maximum value */
  max: number;
}

/**
 * Aggregated analytics across all workers
 */
export interface AggregatedAnalytics {
  /** Time period covered */
  periodStart: number;
  periodEnd: number;

  /** Total workers tracked */
  totalWorkers: number;

  /** Total beads completed */
  totalBeadsCompleted: number;

  /** Average beads per hour across all workers */
  avgBeadsPerHour: number;

  /** Average completion time across all workers */
  avgCompletionTimeMs: number;

  /** Total errors across all workers */
  totalErrors: number;

  /** Overall error rate */
  overallErrorRate: number;

  /** Total cost across all workers */
  totalCostUsd: number;

  /** Average cost per bead */
  avgCostPerBead: number;

  /** Top performers (sorted by beads completed) */
  topPerformers: WorkerMetrics[];

  /** Workers with highest error rates */
  highErrorRateWorkers: WorkerMetrics[];

  /** Most cost-efficient workers (lowest cost per bead) */
  costEfficientWorkers: WorkerMetrics[];

  /** Number of currently active workers */
  activeWorkerCount: number;

  /** Total tokens used across all workers */
  totalTokens: number;

  /** Average efficiency across all workers */
  avgEfficiency: number;

  /** Underperforming workers (high error rate or low efficiency) */
  underperformers: WorkerMetrics[];
}

/**
 * Options for worker analytics
 */
export interface WorkerAnalyticsOptions {
  /** Time window for aggregation */
  timeWindow?: TimeWindow;

  /** Custom start time (overrides timeWindow) */
  startTime?: number;

  /** Custom end time (overrides timeWindow) */
  endTime?: number;

  /** Filter by specific worker IDs */
  workerIds?: string[];

  /** Minimum beads completed to be included */
  minBeadsCompleted?: number;

  /** Maximum workers to return in rankings */
  maxWorkers?: number;

  /** Include time-series data */
  includeTimeSeries?: boolean;

  /** Time-series data point interval (milliseconds) */
  timeSeriesInterval?: number;
}

/**
 * Worker analytics store interface
 */
export interface WorkerAnalyticsStore {
  /** Process an event and update analytics */
  processEvent(event: LogEvent): void;

  /** Get metrics for a specific worker */
  getWorkerMetrics(workerId: string, options?: WorkerAnalyticsOptions): WorkerMetrics | undefined;

  /** Get metrics for all workers */
  getAllWorkerMetrics(options?: WorkerAnalyticsOptions): WorkerMetrics[];

  /** Get aggregated analytics */
  getAggregatedAnalytics(options?: WorkerAnalyticsOptions): AggregatedAnalytics;

  /** Get performance trends */
  getPerformanceTrends(workerId: string, metric: keyof WorkerMetrics, options?: WorkerAnalyticsOptions): PerformanceTrend;

  /** Get time-series data */
  getTimeSeriesData(workerId: string, options?: WorkerAnalyticsOptions): MetricsDataPoint[];

  /** Clear all analytics data */
  clear(): void;

  /** Get analytics summary as formatted string */
  getSummary(options?: WorkerAnalyticsOptions): string;
}

/**
 * Worker comparison result - side-by-side comparison of two workers
 */
export interface WorkerComparison {
  /** First worker metrics */
  worker1: WorkerMetrics;

  /** Second worker metrics */
  worker2: WorkerMetrics;

  /** Metric differences (worker1 - worker2, positive means worker1 is higher) */
  differences: {
    beadsCompleted: number;
    beadsPerHour: number;
    avgCompletionTimeMs: number;
    errorRate: number;
    costPerBead: number;
    efficiencyScore: number;
  };

  /** Percentage differences (worker1 relative to worker2) */
  percentDifferences: {
    beadsCompleted: number;
    beadsPerHour: number;
    avgCompletionTimeMs: number;
    errorRate: number;
    costPerBead: number;
    efficiencyScore: number;
  };

  /** Which worker is better for each metric */
  betterWorker: {
    beadsCompleted: 'worker1' | 'worker2' | 'tie';
    beadsPerHour: 'worker1' | 'worker2' | 'tie';
    avgCompletionTimeMs: 'worker1' | 'worker2' | 'tie';
    errorRate: 'worker1' | 'worker2' | 'tie';
    costPerBead: 'worker1' | 'worker2' | 'tie';
    efficiencyScore: 'worker1' | 'worker2' | 'tie';
  };

  /** Overall winner based on majority of metrics */
  overallWinner: 'worker1' | 'worker2' | 'tie';

  /** Score tally for determining overall winner */
  score: { worker1: number; worker2: number };
}

// ============================================
// Semantic Narrative Types
// ============================================

/**
 * Narrative style for summarization
 */
export type NarrativeStyle = 'brief' | 'detailed' | 'timeline' | 'technical';

/**
 * Event pattern types that drive narrative generation
 */
export type EventPattern =
  | 'bead_started'        // Worker started working on a bead
  | 'bead_completed'      // Worker completed a bead
  | 'file_editing'        // Editing files
  | 'file_created'        // Creating new files
  | 'testing'             // Running tests
  | 'debugging'           // Debugging errors
  | 'git_operations'      // Git commits, pushes, etc.
  | 'dependency_install'  // Installing dependencies
  | 'collision_detected'  // Workers colliding
  | 'error_recovery'      // Recovering from errors
  | 'iteration'           // Iterative refinement
  | 'investigation'       // Investigating/researching
  | 'tool_usage'          // Tool usage patterns
  | 'error_handling'      // Error handling patterns
  | 'task_completion'     // Task completion patterns
  | 'exploration'         // Exploration patterns
  | 'planning'            // Planning patterns
  | 'research';           // Research patterns

/**
 * A single narrative segment describing a sequence of events
 */
export interface NarrativeSegment {
  /** Unique segment ID */
  id: string;

  /** Event pattern this segment describes */
  pattern: EventPattern;

  /** Natural language summary */
  summary: string;

  /** Detailed narrative (if available) */
  details?: string;

  /** Start timestamp */
  startTime: number;

  /** End timestamp */
  endTime: number;

  /** Duration in milliseconds */
  durationMs: number;

  /** Worker ID */
  workerId: string;

  /** Associated bead (if any) */
  beadId?: string;

  /** Events that comprise this segment */
  events: LogEvent[];

  /** Key entities mentioned (files, tools, etc.) */
  entities: {
    files?: string[];
    tools?: string[];
    beads?: string[];
    errors?: string[];
  };

  /** Confidence in pattern detection (0-1) */
  confidence: number;

  /** Whether this segment is still active/ongoing */
  isActive: boolean;
}

/**
 * A complete narrative for a worker session or time period
 */
export interface SemanticNarrative {
  /** Narrative ID */
  id: string;

  /** Worker ID (or 'all' for multi-worker narratives) */
  workerId: string;

  /** Narrative title */
  title: string;

  /** High-level summary (1-2 sentences) */
  summary: string;

  /** All narrative segments in chronological order */
  segments: NarrativeSegment[];

  /** Full narrative text */
  fullNarrative: string;

  /** Timeline of key events */
  timeline: string[];

  /** Start timestamp */
  startTime: number;

  /** End timestamp */
  endTime: number;

  /** Total duration */
  durationMs: number;

  /** Key accomplishments */
  accomplishments: string[];

  /** Challenges encountered */
  challenges: string[];

  /** Overall sentiment: 'productive' | 'struggling' | 'mixed' | 'idle' */
  sentiment: 'productive' | 'struggling' | 'mixed' | 'idle';

  /** Statistics */
  stats: {
    totalEvents: number;
    segmentCount: number;
    beadsWorked: number;
    filesModified: number;
    errorsEncountered: number;
    toolsUsed: number;
  };

  /** When this narrative was generated */
  generatedAt: number;

  /** Whether this narrative is still being updated */
  isLive: boolean;
}

/**
 * Options for narrative generation
 */
export interface NarrativeOptions {
  /** Narrative style */
  style?: NarrativeStyle;

  /** Filter by worker ID */
  workerId?: string;

  /** Filter by bead ID */
  beadId?: string;

  /** Time range start */
  startTime?: number;

  /** Time range end */
  endTime?: number;

  /** Minimum confidence for pattern detection */
  minConfidence?: number;

  /** Maximum segments to generate */
  maxSegments?: number;

  /** Include technical details */
  includeTechnicalDetails?: boolean;

  /** Include timeline */
  includeTimeline?: boolean;

  /** Group events by time window (ms) */
  segmentWindowMs?: number;

  /** Minimum events per segment */
  minEventsPerSegment?: number;
}

/**
 * Narrative update event - emitted when narrative changes
 */
export interface NarrativeUpdate {
  /** Narrative ID */
  narrativeId: string;

  /** Update type */
  type: 'segment_added' | 'segment_updated' | 'segment_completed' | 'narrative_completed';

  /** Updated segment (if applicable) */
  segment?: NarrativeSegment;

  /** Timestamp of update */
  timestamp: number;

  /** New summary text */
  summary?: string;
}

/**
 * Semantic narrative manager interface
 */
export interface SemanticNarrativeManager {
  /** Process an event and update narratives */
  processEvent(event: LogEvent): void;

  /** Generate narrative for a worker */
  generateNarrative(workerId: string, options?: NarrativeOptions): SemanticNarrative;

  /** Generate narrative for all workers */
  generateAggregatedNarrative(options?: NarrativeOptions): SemanticNarrative;

  /** Get current active narratives */
  getActiveNarratives(): SemanticNarrative[];

  /** Get narrative by ID */
  getNarrative(narrativeId: string): SemanticNarrative | undefined;

  /** Subscribe to narrative updates */
  onUpdate(callback: (update: NarrativeUpdate) => void): () => void;

  /** Clear all narratives */
  clear(): void;

  /** Get narrative as formatted string */
  formatNarrative(narrative: SemanticNarrative, style?: NarrativeStyle): string;
}

// ============================================
// Worker Fleet Analytics Types
// ============================================

/**
 * Duration bucket for bead completion histogram
 */
export type DurationBucket = '<5s' | '5-30s' | '30-120s' | '2-10m' | '10m+';

/**
 * Model performance metrics
 */
export interface ModelPerformanceMetrics {
  /** Model identifier (e.g., 'sonnet', 'glm-4.7', 'gpt-4o') */
  model: string;

  /** Provider (e.g., 'anthropic', 'openai', 'glm') */
  provider: string;

  /** Total beads completed */
  beadsCompleted: number;

  /** Average bead duration in ms */
  avgDurationMs: number;

  /** Median bead duration in ms */
  medianDurationMs: number;

  /** Duration distribution histogram */
  durationDistribution: Record<DurationBucket, number>;

  /** Success rate (0-1) */
  successRate: number;

  /** Total errors */
  errorCount: number;

  /** Total cost in USD */
  totalCostUsd: number;

  /** Average cost per bead */
  avgCostPerBead: number;
}

/**
 * Strand utilization metrics
 */
export interface StrandMetrics {
  /** Strand name (pluck, mend, explore, weave, pulse, unravel, knot) */
  strand: string;

  /** Number of invocations */
  invocations: number;

  /** Number of successful invocations (found work) */
  successCount: number;

  /** Success rate (0-1) */
  successRate: number;

  /** Total time spent in ms */
  totalTimeMs: number;

  /** Average time per invocation in ms */
  avgTimeMs: number;

  /** Beads created by this strand (for weave, explore, etc.) */
  beadsCreated?: number;
}

/**
 * Completion quality indicator
 */
export interface CompletionQualityIndicator {
  /** Bead ID */
  beadId: string;

  /** Worker that completed */
  workerId: string;

  /** Model used */
  model: string;

  /** Duration in ms */
  durationMs: number;

  /** Quality flags */
  flags: {
    /** Completed in <10s - suspicious shallow */
    isShallow: boolean;

    /** Had git commits */
    hadCommits: boolean;

    /** Was reopened after closure */
    wasReopened: boolean;

    /** Was claimed by multiple workers (race) */
    hadClaimRace: boolean;
  };

  /** Completion timestamp */
  completedAt: number;
}

/**
 * Fleet time series data point
 */
export interface FleetTimeSeriesPoint {
  /** Timestamp */
  ts: number;

  /** Active worker count */
  activeWorkers: number;

  /** Beads completed in this bucket */
  beadsCompleted: number;

  /** Errors in this bucket */
  errors: number;

  /** Cost in this bucket */
  costUsd: number;
}

/**
 * Workspace coverage info
 */
export interface WorkspaceCoverage {
  /** Workspace path */
  path: string;

  /** Active workers in this workspace */
  activeWorkers: number;

  /** Total beads worked on */
  beadsWorked: number;

  /** Last activity timestamp */
  lastActivity: number;

  /** Worker IDs */
  workers: string[];
}

/**
 * Complete fleet analytics data
 */
export interface FleetAnalytics {
  /** Time range covered */
  timeRange: {
    start: number;
    end: number;
    windowLabel: string;
  };

  /** Model performance breakdown */
  modelPerformance: ModelPerformanceMetrics[];

  /** Strand utilization */
  strandMetrics: StrandMetrics[];

  /** Quality indicators */
  qualityIndicators: {
    /** Total shallow completions (<10s) */
    shallowCompletions: number;

    /** Completions with git commits */
    completionsWithCommits: number;

    /** Reopened beads */
    reopenedBeads: number;

    /** Claim races */
    claimRaces: number;

    /** Recent suspicious completions */
    suspiciousCompletions: CompletionQualityIndicator[];
  };

  /** Fleet overview */
  fleetOverview: {
    /** Total unique workers seen */
    totalWorkers: number;

    /** Currently active workers */
    activeWorkers: number;

    /** Total beads completed */
    totalBeadsCompleted: number;

    /** Total errors */
    totalErrors: number;

    /** Bead throughput per hour */
    beadsPerHour: number;

    /** Watchdog relaunch count */
    watchdogRelaunchCount: number;

    /** Workspace coverage */
    workspaces: WorkspaceCoverage[];
  };

  /** Time series data */
  timeSeries: FleetTimeSeriesPoint[];
}

/**
 * Options for fleet analytics queries
 */
export interface FleetAnalyticsOptions {
  /** Time window */
  timeWindow?: TimeWindow;

  /** Custom start time */
  startTime?: number;

  /** Custom end time */
  endTime?: number;

  /** Include time series data */
  includeTimeSeries?: boolean;

  /** Time series bucket size in minutes */
  timeSeriesBucketMinutes?: number;

  /** Filter by model */
  modelFilter?: string;

  /** Maximum suspicious completions to return */
  maxSuspiciousCompletions?: number;
}