/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import * as os from 'os';
import * as fs from 'fs';
import * as path from 'path';
import { randomUUID } from 'crypto';
import { QWEN_DIR } from './paths.js';
const homeDir = os.homedir() ?? '';
const geminiDir = path.join(homeDir, QWEN_DIR);
const installationIdFile = path.join(geminiDir, 'installation_id');
function ensureGeminiDirExists() {
    if (!fs.existsSync(geminiDir)) {
        fs.mkdirSync(geminiDir, { recursive: true });
    }
}
function readInstallationIdFromFile() {
    if (fs.existsSync(installationIdFile)) {
        const installationid = fs.readFileSync(installationIdFile, 'utf-8').trim();
        return installationid || null;
    }
    return null;
}
function writeInstallationIdToFile(installationId) {
    fs.writeFileSync(installationIdFile, installationId, 'utf-8');
}
/**
 * Retrieves the installation ID from a file, creating it if it doesn't exist.
 * This ID is used for unique user installation tracking.
 * @returns A UUID string for the user.
 */
export function getInstallationId() {
    try {
        ensureGeminiDirExists();
        let installationId = readInstallationIdFromFile();
        if (!installationId) {
            installationId = randomUUID();
            writeInstallationIdToFile(installationId);
        }
        return installationId;
    }
    catch (error) {
        console.error('Error accessing installation ID file, generating ephemeral ID:', error);
        return '123456789';
    }
}
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