/**
 * @license
 * Copyright 2026 Google LLC
 * SPDX-License-Identifier: Apache-2.0
 */
import fs from 'node:fs';
import os from 'node:os';
import path from 'node:path';
import process from 'node:process';
import { logger } from '../logger.js';
export const DAEMON_SCRIPT_PATH = path.join(import.meta.dirname, 'daemon.js');
export const INDEX_SCRIPT_PATH = path.join(import.meta.dirname, '..', 'bin', 'chrome-devtools-mcp.js');
const APP_NAME = 'chrome-devtools-mcp';
export const DAEMON_CLIENT_NAME = 'chrome-devtools-cli-daemon';
// Using these paths due to strict limits on the POSIX socket path length.
export function getSocketPath(sessionId) {
    const uid = os.userInfo().uid;
    const suffix = sessionId ? `-${sessionId}` : '';
    const appName = APP_NAME + suffix;
    if (IS_WINDOWS) {
        // Windows uses Named Pipes, not file paths.
        // This format is required for server.listen()
        return path.join('\\\\.\\pipe', appName, 'server.sock');
    }
    // 1. Try XDG_RUNTIME_DIR (Linux standard, sometimes macOS)
    if (process.env.XDG_RUNTIME_DIR) {
        return path.join(process.env.XDG_RUNTIME_DIR, appName, 'server.sock');
    }
    // 2. macOS/Unix Fallback: Use /tmp/
    // We use /tmp/ because it is much shorter than ~/Library/Application Support/
    // and keeps us well under the 104-character limit.
    return path.join('/tmp', `${appName}-${uid}.sock`);
}
export function getRuntimeHome(sessionId) {
    const platform = os.platform();
    const uid = os.userInfo().uid;
    const suffix = sessionId ? `-${sessionId}` : '';
    const appName = APP_NAME + suffix;
    // 1. Check for the modern Unix standard
    if (process.env.XDG_RUNTIME_DIR) {
        return path.join(process.env.XDG_RUNTIME_DIR, appName);
    }
    // 2. Fallback for macOS and older Linux
    if (platform === 'darwin' || platform === 'linux') {
        // /tmp is cleared on boot, making it perfect for PIDs
        return path.join('/tmp', `${appName}-${uid}`);
    }
    // 3. Windows Fallback
    return path.join(os.tmpdir(), appName);
}
export const IS_WINDOWS = os.platform() === 'win32';
export function getPidFilePath(sessionId) {
    const runtimeDir = getRuntimeHome(sessionId);
    return path.join(runtimeDir, 'daemon.pid');
}
export function getDaemonPid(sessionId) {
    try {
        const pidFile = getPidFilePath(sessionId);
        logger(`Daemon pid file ${pidFile} sessionId=${sessionId}`);
        if (!fs.existsSync(pidFile)) {
            return null;
        }
        const pidContent = fs.readFileSync(pidFile, 'utf-8');
        const pid = parseInt(pidContent.trim(), 10);
        logger(`Daemon pid: ${pid}`);
        if (isNaN(pid)) {
            return null;
        }
        return pid;
    }
    catch {
        return null;
    }
}
export function isDaemonRunning(sessionId) {
    const pid = getDaemonPid(sessionId);
    if (pid) {
        try {
            process.kill(pid, 0); // Throws if process doesn't exist
            return true;
        }
        catch {
            // Process is dead, stale PID file. Proceed with startup.
        }
    }
    return false;
}
export function serializeArgs(options, argv) {
    const args = [];
    for (const key of Object.keys(options)) {
        if (argv[key] === undefined || argv[key] === null) {
            continue;
        }
        const value = argv[key];
        const kebabKey = key.replace(/[A-Z]/g, m => `-${m.toLowerCase()}`);
        if (typeof value === 'boolean') {
            if (value) {
                args.push(`--${kebabKey}`);
            }
            else {
                args.push(`--no-${kebabKey}`);
            }
        }
        else if (Array.isArray(value)) {
            for (const item of value) {
                args.push(`--${kebabKey}`, String(item));
            }
        }
        else {
            args.push(`--${kebabKey}`, String(value));
        }
    }
    return args;
}
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