export interface FileSnapshot {
  path: string;
  content: string;
  content_hash: string;
}

export interface AgentSessionCreateResponse {
  session_id: string;
  rag_session_id: string;
  index_job_id: string;
  status: string;
  created_at: string;
}

export interface AgentSessionResult {
  sessionId: string;
  ragSessionId: string;
  indexedFiles: number;
  failedFiles: number;
  cacheHitFiles: number;
  cacheMissFiles: number;
}

export interface TaskQueuedResponse {
  request_id: string;
  session_id: string;
  status: string;
  stream_url: string;
}

export interface PatchHunk {
  type?: "append_end" | "replace_between" | "replace_line_equals";
  new_text?: string;
  start_anchor?: string;
  end_anchor?: string;
  old_line?: string;
}

export interface ChangeItem {
  op?: "create" | "update" | "delete";
  path?: string;
  base_hash?: string | null;
  proposed_content?: string | null;
  reason?: string;
  hunks?: PatchHunk[];
}

export interface TaskResultResponse {
  request_id: string;
  session_id: string;
  status: string;
  process_version: string;
  answer?: string | null;
  changeset?: ChangeItem[];
  apply_changeset?: boolean;
  error?: { desc?: string; message?: string } | null;
}

export interface TaskArtifact {
  artifact_type: string;
  title: string;
  content?: string;
  format?: string;
  template_id?: string | null;
  source_refs?: string[];
}

export interface TaskEvent {
  kind: "queued" | "progress" | "thinking" | "status" | "result" | "error";
  task_id: string;
  status?: string;
  stage?: string;
  message?: string;
  progress?: unknown;
  meta?: Record<string, unknown>;
  heartbeat?: boolean;
  result_type?: string;
  answer?: string;
  artifacts?: TaskArtifact[];
}

export interface SendChatPayload {
  sessionId: string;
  message: string;
  processVersion: string;
}

export interface SendChatResult {
  taskId: string;
  resultType: string;
  answer: string;
  artifacts: TaskArtifact[];
  changeset: ChangeItem[];
  applyChangeset: boolean;
}

export interface RagJobResponse {
  rag_session_id: string;
  index_job_id: string;
  status: string;
  indexed_files: number;
  failed_files: number;
  cache_hit_files: number;
  cache_miss_files: number;
  error?: { desc?: string; message?: string } | null;
}

export interface RagProgressEvent {
  status: "progress" | "done" | "error";
  message: string;
  done: number | null;
  total: number | null;
  failed: number | null;
  cacheHitFiles: number | null;
  cacheMissFiles: number | null;
  currentFilePath?: string;
  currentFileName?: string;
}