const fs = require('fs');
const path = require('path');
const yaml = require('js-yaml');
const inquirer = require('inquirer');
const chalk = require('chalk');

const configDirPath = `${__dirname}/../.config`;
const configPath = `${configDirPath}/default.yml`;

const form = [
	{
		type: 'input',
		name: 'maintainer',
		message: 'Maintainer name(and email address):'
	},
	{
		type: 'input',
		name: 'url',
		message: 'PRIMARY URL:'
	},
	{
		type: 'input',
		name: 'secondary_url',
		message: 'SECONDARY URL:'
	},
	{
		type: 'input',
		name: 'port',
		message: 'Listen port:'
	},
	{
		type: 'confirm',
		name: 'https',
		message: 'Use TLS?',
		default: false
	},
	{
		type: 'input',
		name: 'https_key',
		message: 'Path of tls key:',
		when: ctx => ctx.https
	},
	{
		type: 'input',
		name: 'https_cert',
		message: 'Path of tls cert:',
		when: ctx => ctx.https
	},
	{
		type: 'input',
		name: 'https_ca',
		message: 'Path of tls ca:',
		when: ctx => ctx.https
	},
	{
		type: 'input',
		name: 'mongo_host',
		message: 'MongoDB\'s host:',
		default: 'localhost'
	},
	{
		type: 'input',
		name: 'mongo_port',
		message: 'MongoDB\'s port:',
		default: '27017'
	},
	{
		type: 'input',
		name: 'mongo_db',
		message: 'MongoDB\'s db:',
		default: 'misskey'
	},
	{
		type: 'input',
		name: 'mongo_user',
		message: 'MongoDB\'s user:'
	},
	{
		type: 'password',
		name: 'mongo_pass',
		message: 'MongoDB\'s password:'
	},
	{
		type: 'input',
		name: 'redis_host',
		message: 'Redis\'s host:',
		default: 'localhost'
	},
	{
		type: 'input',
		name: 'redis_port',
		message: 'Redis\'s port:',
		default: '6379'
	},
	{
		type: 'password',
		name: 'redis_pass',
		message: 'Redis\'s password:'
	},
	{
		type: 'confirm',
		name: 'elasticsearch',
		message: 'Use Elasticsearch?',
		default: false
	},
	{
		type: 'input',
		name: 'es_host',
		message: 'Elasticsearch\'s host:',
		default: 'localhost',
		when: ctx => ctx.elasticsearch
	},
	{
		type: 'input',
		name: 'es_port',
		message: 'Elasticsearch\'s port:',
		default: '9200',
		when: ctx => ctx.elasticsearch
	},
	{
		type: 'password',
		name: 'es_pass',
		message: 'Elasticsearch\'s password:',
		when: ctx => ctx.elasticsearch
	},
	{
		type: 'input',
		name: 'recaptcha_site',
		message: 'reCAPTCHA\'s site key:'
	},
	{
		type: 'input',
		name: 'recaptcha_secret',
		message: 'reCAPTCHA\'s secret key:'
	}
];

inquirer.prompt(form).then(as => {
	// Mapping answers
	const conf = {
		maintainer: as['maintainer'],
		url: as['url'],
		secondary_url: as['secondary_url'],
		port: parseInt(as['port'], 10),
		https: {
			enable: as['https'],
			key: as['https_key'] || null,
			cert: as['https_cert'] || null,
			ca: as['https_ca'] || null
		},
		mongodb: {
			host: as['mongo_host'],
			port: parseInt(as['mongo_port'], 10),
			db: as['mongo_db'],
			user: as['mongo_user'],
			pass: as['mongo_pass']
		},
		redis: {
			host: as['redis_host'],
			port: parseInt(as['redis_port'], 10),
			pass: as['redis_pass']
		},
		elasticsearch: {
			enable: as['elasticsearch'],
			host: as['es_host'] || null,
			port: parseInt(as['es_port'], 10) || null,
			pass: as['es_pass'] || null
		},
		recaptcha: {
			siteKey: as['recaptcha_site'],
			secretKey: as['recaptcha_secret']
		}
	};

	console.log(`Thanks. Writing the configuration to ${chalk.bold(path.resolve(configPath))}`);

	try {
		fs.mkdirSync(configDirPath);
		fs.writeFileSync(configPath, yaml.dump(conf));
		console.log(chalk.green('Well done.'));
	} catch (e) {
		console.error(e);
	}
});