/**
 * @file sessionDefaults.ts
 * @description The account's own starting choices for new work, picked in the
 * first-run setup (docs/plans/onboarding) and synced per account like every
 * other preference (`lib/userPrefs.ts`): the AI a new workspace starts on, and
 * the permission mode a new Claude session starts in. Bypass is NEVER one of
 * them — it stays the per-session switch (CLAUDE.md), so `bypassPermissions`
 * is refused on read and on write.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

import type { PermissionMode } from "./api";

const TOOL_KEY = "agenthub.defaultTool";
const MODE_KEY = "agenthub.permissionMode";

/** The permission modes a default may be. */
export const DEFAULT_MODES = ["auto", "acceptEdits", "default", "plan"] as const;
export type DefaultMode = (typeof DEFAULT_MODES)[number];

function read(key: string): string | null {
  try {
    return localStorage.getItem(key);
  } catch {
    return null;
  }
}
function write(key: string, value: string): void {
  try {
    localStorage.setItem(key, value);
  } catch {
    /* storage blocked */
  }
}

/** The account's own default AI tool id, or null (the install's default applies). */
export const readDefaultTool = (): string | null => read(TOOL_KEY);
export const writeDefaultTool = (id: string): void => write(TOOL_KEY, id);

/** The permission mode a new Claude session starts in ("auto" when none was picked). */
export function readDefaultMode(): PermissionMode {
  const v = read(MODE_KEY);
  return (DEFAULT_MODES as readonly string[]).includes(v ?? "") ? (v as DefaultMode) : "auto";
}
export function writeDefaultMode(mode: DefaultMode): void {
  if ((DEFAULT_MODES as readonly string[]).includes(mode)) write(MODE_KEY, mode);
}