const readline = require('readline');
const { execFileSync } = require('child_process');
const fs = require('fs');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

const CONFIG_DIR = '/opt/proxy-bridge';
const CONFIG_FILE = `${CONFIG_DIR}/config.json`;
const USER_FILE = `${CONFIG_DIR}/user.json`;

console.log("=== Proxy Bridge Configuration Setup ===");

function ask(question, defaultValue = "") {
    return new Promise((resolve) => {
        const prompt = defaultValue ? `${question} [${defaultValue}]: ` : `${question}: `;
        rl.question(prompt, (answer) => {
            resolve(answer || defaultValue);
        });
    });
}

async function run() {
    try {
        // 1. Upstream Proxy Configuration
        console.log("\n--- Upstream Proxy (Corporate) ---");
        const host = await ask("Corporate Proxy Hostname (e.g. proxy.company.com)");
        const port = await ask("Corporate Proxy Port", "8080");

        if (!host) {
            console.error("❌ Hostname is required.");
            process.exit(1);
        }

        // 2. Credentials
        console.log("\n--- Credentials ---");
        const user = await ask("Corporate Username");
        
        // Setup password mask
        const oldWrite = rl._writeToOutput;
        rl._writeToOutput = function _writeToOutput(stringToWrite) {
            if (rl.line.length > 0) rl.output.write("*");
            else rl.output.write(stringToWrite);
        };
        const pass = await ask("Corporate Password");
        rl._writeToOutput = oldWrite;

        // Save Proxy Config
        if (!fs.existsSync(CONFIG_DIR)) {
            fs.mkdirSync(CONFIG_DIR, { recursive: true });
        }
        fs.writeFileSync(CONFIG_FILE, JSON.stringify({ host, port }, null, 2));

        // Save Username
        fs.writeFileSync(USER_FILE, JSON.stringify({ username: user }));

        // Store Password in Keyring
        console.log("\n--> Storing password in system keyring...");
        execFileSync('secret-tool', [
            'store',
            '--label=Proxy Bridge Credentials',
            'service',
            'proxy-bridge',
            'account',
            user,
        ], {
            input: pass
        });

        console.log("\n✅ Configuration and credentials successfully stored.");
    } catch (error) {
        console.error("\n❌ Setup failed:", error.message);
        process.exit(1);
    } finally {
        rl.close();
    }
}

run();