export enum ErrorCode {
  SOURCE_MISSING = 4001,
  INVALID_URL = 4002,
  PARSE_FAILED = 4003,
  NO_CONTENT = 4004,
  CRAWL_FAILED = 5001,
  DIFF_FAILED = 5002,
  DB_SAVE_FAILED = 5003,
  EXPORT_STRUCT_FAILED = 5004
}

export type SourceType = 'peer_bank' | 'regulator' | 'sdk_vendor';
export type CrawlFrequency = '4h' | 'daily' | 'weekly';
export type Priority = 'high' | 'medium' | 'low';

export interface SourceRegistry {
  source_id: string;
  source_name: string;
  source_type: SourceType;
  domain: string;
  entry_url: string;
  url_pattern: string;
  parser_type: string;
  crawl_frequency: CrawlFrequency;
  priority: Priority;
  enabled: boolean;
  topic_tags: string[];
  created_at?: string;
  updated_at?: string;
}

export type TriggerType = 'schedule' | 'manual' | 'webhook';
export type JobStatus = 'queued' | 'running' | 'success' | 'failed';

export interface CrawlJob {
  job_id: string;
  source_id: string;
  trigger_type: TriggerType;
  status: JobStatus;
  started_at?: string;
  ended_at?: string;
  error_code?: string;
  error_message?: string;
  retry_count: number;
}

export interface RawSnapshot {
  snapshot_id: string;
  source_id: string;
  job_id: string;
  fetched_at: string;
  content_type: string;
  raw_body: string;
  raw_hash: string;
  http_status: number;
  final_url: string;
}

export type DocStatus = 'active' | 'archived';

export interface NormalizedDocument {
  doc_id: string;
  source_id: string;
  snapshot_id: string;
  title: string;
  version_date: string;
  effective_date: string;
  normalized_text: string;
  normalized_hash: string;
  doc_status: DocStatus;
  created_at?: string;
}

export type EmbeddingStatus = 'pending' | 'ready' | 'failed';

export interface ClauseChunk {
  chunk_id: string;
  doc_id: string;
  section_path: string;
  section_title: string;
  clause_text: string;
  topic_tags: string[];
  embedding_status: EmbeddingStatus;
  chunk_order: number;
  created_at?: string;
}

export type ChangeType = 'added' | 'removed' | 'modified' | 'unchanged';
export type ImpactLevel = 'high' | 'medium' | 'low';

export interface DiffEvent {
  event_id: string;
  source_id: string;
  from_doc_id: string;
  to_doc_id: string;
  change_type: ChangeType;
  section_title: string;
  old_excerpt: string;
  new_excerpt: string;
  topic_tags: string[];
  impact_level: ImpactLevel;
  detected_at: string;
}

// API Requests / Responses

export interface CreateSourceRequest {
  source_name: string;
  source_type: SourceType;
  domain: string;
  entry_url: string;
  url_pattern: string;
  parser_type: string;
  crawl_frequency: CrawlFrequency;
  priority: Priority;
  enabled: boolean;
  topic_tags: string[];
}

export interface CreateSourceResponse {
  source_id: string;
  success: boolean;
}

export interface GetSourcesQuery {
  source_type?: SourceType;
  enabled?: boolean;
  priority?: Priority;
}

export interface GetSourcesResponse {
  items: SourceRegistry[];
  total: number;
}

export interface CreateJobsRequest {
  source_ids: string[];
  trigger_type: TriggerType;
}

export interface CreateJobsResponse {
  job_ids: string[];
  status: string;
}

export interface GetJobResponse {
  job_id: string;
  source_id: string;
  status: JobStatus;
  started_at?: string;
  ended_at?: string;
  error_code?: string | null;
  retry_count: number;
}