/**
 * @file Where Antigravity's CLI (`agy`) keeps its data. `agy` has no home
 * override of its own — everything is under `~/.gemini`: its conversations and
 * transcripts in `antigravity-cli/`, and the user's global hooks in
 * `config/hooks.json`, shared with the Antigravity IDE. `AGENTHUB_GEMINI_DIR`
 * points AgentHub elsewhere (tests; a pane whose HOME differs). `agyCliDirs`
 * also names the resolved path when a symlink leads elsewhere, since agy may
 * report either in a hook.
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */

const fs = require("node:fs");
const path = require("node:path");
const os = require("node:os");

/** `~/.gemini`, or `AGENTHUB_GEMINI_DIR`; read at call time. */
function getGeminiDir() {
  return process.env.AGENTHUB_GEMINI_DIR || path.join(os.homedir(), ".gemini");
}

/** The CLI's own data: `conversations/<id>.db`, `brain/<id>/…`. */
function getAgyCliDir() {
  return path.join(getGeminiDir(), "antigravity-cli");
}

/** The CLI dir as configured and, when a symlink leads elsewhere, as resolved. */
function agyCliDirs() {
  const raw = path.resolve(getAgyCliDir());
  let real = raw;
  try {
    real = fs.realpathSync(raw);
  } catch {
    try {
      real = path.join(fs.realpathSync(getGeminiDir()), "antigravity-cli");
    } catch {
      /* neither exists yet */
    }
  }
  return real === raw ? [raw] : [raw, real];
}

module.exports = { getGeminiDir, getAgyCliDir, agyCliDirs };