import fs from 'node:fs';
import path from 'node:path';
import { X509Certificate, createPrivateKey } from 'node:crypto';
import { getCacheDirectory } from './helpers/get-cache-directory';
import * as Log from '../build/output/log';
import { execSync } from 'node:child_process';
const { WritableStream } = require('node:stream/web');
const MKCERT_VERSION = 'v1.4.4';
function getBinaryName() {
    const platform = process.platform;
    const arch = process.arch === 'x64' ? 'amd64' : process.arch;
    if (platform === 'win32') {
        return `mkcert-${MKCERT_VERSION}-windows-${arch}.exe`;
    }
    if (platform === 'darwin') {
        return `mkcert-${MKCERT_VERSION}-darwin-${arch}`;
    }
    if (platform === 'linux') {
        return `mkcert-${MKCERT_VERSION}-linux-${arch}`;
    }
    throw Object.defineProperty(new Error(`Unsupported platform: ${platform}`), "__NEXT_ERROR_CODE", {
        value: "E141",
        enumerable: false
    });
}
async function downloadBinary() {
    try {
        const binaryName = getBinaryName();
        const cacheDirectory = getCacheDirectory('mkcert');
        const binaryPath = path.join(cacheDirectory, binaryName);
        if (fs.existsSync(binaryPath)) {
            return binaryPath;
        }
        const downloadUrl = `https://github.com/FiloSottile/mkcert/releases/download/${MKCERT_VERSION}/${binaryName}`;
        await fs.promises.mkdir(cacheDirectory, {
            recursive: true
        });
        Log.info(`Downloading mkcert package...`);
        const response = await fetch(downloadUrl);
        if (!response.ok || !response.body) {
            throw Object.defineProperty(new Error(`request failed with status ${response.status}`), "__NEXT_ERROR_CODE", {
                value: "E109",
                enumerable: false
            });
        }
        Log.info(`Download response was successful, writing to disk`);
        const binaryWriteStream = fs.createWriteStream(binaryPath);
        await response.body.pipeTo(new WritableStream({
            write (chunk) {
                return new Promise((resolve, reject)=>{
                    binaryWriteStream.write(chunk, (error)=>{
                        if (error) {
                            reject(error);
                            return;
                        }
                        resolve();
                    });
                });
            },
            close () {
                return new Promise((resolve, reject)=>{
                    binaryWriteStream.close((error)=>{
                        if (error) {
                            reject(error);
                            return;
                        }
                        resolve();
                    });
                });
            }
        }));
        await fs.promises.chmod(binaryPath, 493);
        return binaryPath;
    } catch (err) {
        Log.error('Error downloading mkcert:', err);
    }
}
export async function createSelfSignedCertificate(host, certDir = 'certificates') {
    try {
        const binaryPath = await downloadBinary();
        if (!binaryPath) throw Object.defineProperty(new Error('missing mkcert binary'), "__NEXT_ERROR_CODE", {
            value: "E198",
            enumerable: false
        });
        const resolvedCertDir = path.resolve(process.cwd(), `./${certDir}`);
        await fs.promises.mkdir(resolvedCertDir, {
            recursive: true
        });
        const keyPath = path.resolve(resolvedCertDir, 'localhost-key.pem');
        const certPath = path.resolve(resolvedCertDir, 'localhost.pem');
        if (fs.existsSync(keyPath) && fs.existsSync(certPath)) {
            const cert = new X509Certificate(fs.readFileSync(certPath));
            const key = fs.readFileSync(keyPath);
            if (cert.checkHost(host ?? 'localhost') && cert.checkPrivateKey(createPrivateKey(key))) {
                Log.info('Using already generated self signed certificate');
                const caLocation = execSync(`"${binaryPath}" -CAROOT`).toString().trim();
                return {
                    key: keyPath,
                    cert: certPath,
                    rootCA: `${caLocation}/rootCA.pem`
                };
            }
        }
        Log.info('Attempting to generate self signed certificate. This may prompt for your password');
        const defaultHosts = [
            'localhost',
            '127.0.0.1',
            '::1'
        ];
        const hosts = host && !defaultHosts.includes(host) ? [
            ...defaultHosts,
            host
        ] : defaultHosts;
        execSync(`"${binaryPath}" -install -key-file "${keyPath}" -cert-file "${certPath}" ${hosts.join(' ')}`, {
            stdio: 'ignore'
        });
        const caLocation = execSync(`"${binaryPath}" -CAROOT`).toString().trim();
        if (!fs.existsSync(keyPath) || !fs.existsSync(certPath)) {
            throw Object.defineProperty(new Error('Certificate files not found'), "__NEXT_ERROR_CODE", {
                value: "E131",
                enumerable: false
            });
        }
        Log.info(`CA Root certificate created in ${caLocation}`);
        Log.info(`Certificates created in ${resolvedCertDir}`);
        const gitignorePath = path.resolve(process.cwd(), './.gitignore');
        if (fs.existsSync(gitignorePath)) {
            const gitignore = await fs.promises.readFile(gitignorePath, 'utf8');
            if (!gitignore.includes(certDir)) {
                Log.info('Adding certificates to .gitignore');
                await fs.promises.appendFile(gitignorePath, `\n${certDir}`);
            }
        }
        return {
            key: keyPath,
            cert: certPath,
            rootCA: `${caLocation}/rootCA.pem`
        };
    } catch (err) {
        Log.error('Failed to generate self-signed certificate. Falling back to http.', err);
    }
}

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