/**
 * Application settings domain entity. Mirrors `settings.rs`.
 */
import type { AppConfig } from "./app_config.ts";

/** Controls how much network access the agent is permitted. */
export type InternetMode = "Off" | "ReadOnly" | "Full";

export const InternetModeLiteral = {
  Off: "Off" as const,
  ReadOnly: "ReadOnly" as const,
  Full: "Full" as const,
} satisfies Record<string, InternetMode>;

/** Grouped boolean feature toggles. */
export interface SettingsFlags {
  review_enabled: boolean;
  session_archive_enabled: boolean;
}

export function newSettingsFlags(): SettingsFlags {
  return { review_enabled: true, session_archive_enabled: true };
}

const DEFAULT_HIVE_MIND_NODE_TIMEOUT_MS = 600_000;

/** Top-level application settings model (serialized to `settings.json`). */
export interface Settings {
  internet_mode: InternetMode;
  provider: string;
  model: string;
  api_keys: Record<string, string>;
  max_tokens?: number;
  temperature?: number;
  review_max_lessons_per_run: number;
  adaptive_review_max_skip: number;
  verify_command?: string;
  verify_timeout_ms: number;
  workflow_max_concurrency: number;
  review_enabled: boolean;
  session_archive_enabled: boolean;
  hive_mind_node_timeout_ms: number;
}

export function newSettings(): Settings {
  return {
    internet_mode: "Off",
    provider: "zen",
    model: "deepseek-v4-flash-free",
    api_keys: {},
    max_tokens: undefined,
    temperature: undefined,
    review_max_lessons_per_run: 5,
    adaptive_review_max_skip: 3,
    verify_command: undefined,
    verify_timeout_ms: 30_000,
    workflow_max_concurrency: 5,
    review_enabled: true,
    session_archive_enabled: true,
    hive_mind_node_timeout_ms: DEFAULT_HIVE_MIND_NODE_TIMEOUT_MS,
  };
}

/**
 * Pick the effective model name for the main agent.
 *
 * When `settings.provider === "claude"`, the provider's `default_model`
 * (or the app-level `default_model`) wins over a possibly-stale persisted
 * `settings.model`. Otherwise the user's explicit `settings.model` is used.
 */
export function resolveEffectiveModel(settings: Settings, appConfig: AppConfig): string {
  if (settings.provider === "claude") {
    const m = appConfig.providers["claude"]?.default_model;
    if (m) return m;
    return appConfig.default_model;
  }
  return settings.model;
}