export type GenerationTaskStatus = 'draft' | 'queued' | 'running' | 'waiting_external' | 'completed' | 'failed' | 'cancelled';

export type GenerationTaskStepStatus = 'pending' | 'running' | 'completed' | 'failed' | 'skipped';

export interface GenerationTaskStep {
  id: string;
  label: string;
  status: GenerationTaskStepStatus;
  progress: number;
  errorMessage?: string;
  startedAt?: number;
  finishedAt?: number;
  retryable?: boolean;
}

export interface GenerationTaskCost {
  estimatedCredits: number;
  reservedCredits?: number;
  reservationId?: string;
  status: 'estimated' | 'reserved' | 'committed' | 'refunded' | 'free' | 'unknown';
  refundReason?: string;
}

export interface GenerationTask {
  id: string;
  title: string;
  pipelineId: string;
  operation: string;
  status: GenerationTaskStatus;
  progress: number;
  currentStepId: string;
  steps: GenerationTaskStep[];
  cost: GenerationTaskCost;
  createdAt: number;
  updatedAt: number;
  resultUrl?: string;
  errorMessage?: string;
  failureSuggestion?: string;
  retryable?: boolean;
  recoverable?: boolean;
  externalTaskIds?: Record<string, string>;
  snapshot?: any;
}

export interface LegacyTaskLike {
  id: string;
  keyword: string;
  status: string;
  step: string;
  progress: number;
  cost?: number;
  created_at: Date | string;
  updated_at: Date | string;
  result_url?: string;
  error_message?: string;
  original_video_title?: string;
  duration?: string;
  type?: string;
  estimatedCredits?: number;
  reservedCredits?: number;
  creditReservationId?: string;
  creditStatus?: GenerationTaskCost['status'];
  operation?: string;
  pipelineId?: string;
  generationStatus?: GenerationTaskStatus;
  externalTaskIds?: Record<string, string>;
  failureSuggestion?: string;
  retryable?: boolean;
  recoverable?: boolean;
  lastErrorAt?: string;
  retryCount?: number;
  steps?: GenerationTaskStep[];
  snapshot?: any;
  vgData?: any;
}