/**
 * @license
 * Copyright 2025 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import { spawn } from 'node:child_process';
import { RELAUNCH_EXIT_CODE } from './processUtils.js';
import { writeToStderr } from '@google/gemini-cli-core';
export async function relaunchOnExitCode(runner) {
    while (true) {
        try {
            const exitCode = await runner();
            if (exitCode !== RELAUNCH_EXIT_CODE) {
                process.exit(exitCode);
            }
        }
        catch (error) {
            process.stdin.resume();
            const errorMessage = error instanceof Error ? (error.stack ?? error.message) : String(error);
            writeToStderr(`Fatal error: Failed to relaunch the CLI process.\n${errorMessage}\n`);
            process.exit(1);
        }
    }
}
export async function relaunchAppInChildProcess(additionalNodeArgs, additionalScriptArgs) {
    if (process.env['GEMINI_CLI_NO_RELAUNCH']) {
        return;
    }
    const runner = () => {
        // process.argv is [node, script, ...args]
        // We want to construct [ ...nodeArgs, script, ...scriptArgs]
        const script = process.argv[1];
        const scriptArgs = process.argv.slice(2);
        const nodeArgs = [
            ...process.execArgv,
            ...additionalNodeArgs,
            script,
            ...additionalScriptArgs,
            ...scriptArgs,
        ];
        const newEnv = { ...process.env, GEMINI_CLI_NO_RELAUNCH: 'true' };
        // The parent process should not be reading from stdin while the child is running.
        process.stdin.pause();
        const child = spawn(process.execPath, nodeArgs, {
            stdio: 'inherit',
            env: newEnv,
        });
        return new Promise((resolve, reject) => {
            child.on('error', reject);
            child.on('close', (code) => {
                // Resume stdin before the parent process exits.
                process.stdin.resume();
                resolve(code ?? 1);
            });
        });
    };
    await relaunchOnExitCode(runner);
}
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