import type { SessionResult } from "./session-runner.js";

export interface SimpleSubagentsConfig {
  confirmWrites: boolean;
  allowThinkingOverrides: boolean;
}

export type SessionState = "opening" | "open" | "closing" | "closed" | "failed";
export type WorkState = "queued" | "running" | "cancelling" | "completed" | "waiting_for_parent" | "cancelled" | "failed";
export type ResultState = "none" | "ready" | "collected" | "discarded";
export type AccessMode = "read-only" | "write";
export type ReportKind = "progress" | "help_request";
/** Maximum recent non-live closed or failed session records retained by the manager. */
export const SESSION_TOMBSTONE_MAX_ITEMS = 64;
export const TASK_MAX_BYTES = 32 * 1024;
export const REPORT_MAX_BYTES = 4 * 1024;
export const REPORT_ID_MAX_BYTES = 256;
export const REPORT_INBOX_MAX_BYTES = 50 * 1024;
export const REPORT_INBOX_MAX_ITEMS = 128;
export const REPORT_RECORD_FIXED_BYTES = 64;
export const REPORT_DEDUPE_MAX_ITEMS = 512;
export const REPORT_DEDUPE_MAX_BYTES = 16 * 1024;
export const STATUS_ACTIVITY_LIMIT = 3;
export const STATUS_ACTIVITY_MAX_BYTES = 256;
export const RESULT_PREVIEW_MAX_BYTES = 1_024;

export const THINKING_LEVELS = ["off", "minimal", "low", "medium", "high", "xhigh", "max"] as const;
export type ThinkingLevel = (typeof THINKING_LEVELS)[number];
export type LaunchThinkingSource =
  | "job"
  | "profile"
  | "parent"
  | "model_or_pi_default";

export interface AgentProfile {
  name: string;
  description: string;
  systemPrompt: string;
  tools?: string[];
  model?: string;
  thinking?: ThinkingLevel;
  source: "builtin" | "user";
  filePath?: string;
}

export interface JobRequest {
  task: string;
  agent: string;
  writeAccess: boolean;
  cwd?: string;
  model?: string;
  thinkingLevel?: ThinkingLevel;
}

export interface SubagentActivity {
  type: "model" | "tool" | "diagnostic";
  text: string;
  timestamp: number;
}

export interface SubagentGeneration {
  number: number;
  state: WorkState;
  resultState: ResultState;
  /** Safe telemetry retained after the full result is collected or discarded. */
  usage: UsageStats;
  /** Manager-owned, terminal-safe activity labels for only this generation. */
  activity: SubagentActivity[];
  /** Model identity reported by child telemetry, not the requested launch model. */
  reportedModel?: string;
  /** Bounded terminal-safe output metadata retained only after collection. */
  resultPreview?: string;
  result?: SessionResult;
  createdAt: number;
  startedAt?: number;
  finishedAt?: number;
}

export interface SubagentReport {
  sessionId: string;
  generation: number;
  reportId: string;
  kind: ReportKind;
  message: string;
  timestamp: number;
}

export interface SubagentSessionProfile {
  /** Safe agent identity retained after launch-private profile data is released. */
  name: string;
}

export interface SubagentSession {
  id: string;
  request: JobRequest;
  profile: SubagentSessionProfile;
  state: SessionState;
  createdAt: number;
  openedAt?: number;
  failedAt?: number;
  errorMessage?: string;
  pendingHelpReportId?: string;
  pendingHelpQuestion?: string;
  reports: SubagentReport[];
  /** UTF-8 record bytes retained across report messages, IDs, session IDs, and fixed metadata. */
  reportBytes: number;
  omittedReports: number;
  generation: SubagentGeneration;
  launchModel?: string;
  launchThinkingLevel?: ThinkingLevel;
  launchThinkingSource?: LaunchThinkingSource;
}

export interface UsageStats {
  input: number;
  output: number;
  cacheRead: number;
  cacheWrite: number;
  cost: number;
  turns: number;
}

export interface TextTruncation {
  originalBytes: number;
  keptBytes: number;
}