const Promise = require('bluebird')
const path = require("path")
const Builder = require('./buildSrc/Builder.js').Builder
const builder = new Builder(path.join(__dirname, '.'), path.join(__dirname, "build/"))
const fs = Promise.Promise.promisifyAll(require("fs-extra"))
const env = require('./buildSrc/env.js')
const LaunchHtml = require('./buildSrc/LaunchHtml.js')
const SystemConfig = require('./buildSrc/SystemConfig.js')
const os = require("os")

let start = new Date().getTime()

let promise = Promise.resolve()
if (process.argv.indexOf("clean") !== -1) {
	promise = builder.clean()
}

let watch = process.argv.indexOf("watch") === -1 ? undefined : () => {
	}

promise
	.then(() => fs.copyAsync(path.join(__dirname, '/resources/favicon'), path.join(__dirname, '/build/images')))
	.then(() => fs.copyAsync(path.join(__dirname, '/resources/images/'), path.join(__dirname, '/build/images')))
	.then(() => fs.copyAsync(path.join(__dirname, '/libs'), path.join(__dirname, '/build/libs')))
	.then(() => {
		const version = require('./package.json').version
		if (process.argv.indexOf("test") !== -1) {
			return Promise.all([
				createHtml(env.create(SystemConfig.devConfig(true), "https://test.tutanota.com", version, "Browser")),
				createHtml(env.create(SystemConfig.devConfig(true), "https://test.tutanota.com", version, "App"))
			])
		} else if (process.argv.indexOf("prod") !== -1) {
			return Promise.all([
				createHtml(env.create(SystemConfig.devConfig(true), "https://mail.tutanota.com", version, "Browser")),
				createHtml(env.create(SystemConfig.devConfig(true), "https://mail.tutanota.com", version, "App"))
			])
        } else if (process.argv.indexOf("host") !== -1) {
            const hostname = process.argv[process.argv.indexOf("host") + 1]
            return Promise.all([
                createHtml(env.create(SystemConfig.devConfig(true), hostname, version, "Browser")),
                createHtml(env.create(SystemConfig.devConfig(false), hostname, version, "App"))
            ])
		} else {
			return Promise.all([
				createHtml(env.create(SystemConfig.devConfig(true), null, version, "Browser")),
				createHtml(env.create(SystemConfig.devConfig(true),
					"http://" + os.hostname().split(".")[0] + ":9000", version, "App"))
			])
		}
	})
	.then(() => builder.build(["src"], watch))
	.then(() => {
		if (process.argv.indexOf("desktop") !== -1) {
			console.log("building electron desktop client")
			const electronSourcesDir = path.join(__dirname, '/app-native')
			return fs.emptyDirAsync(electronSourcesDir + "/resources/")
			         .then(() => {
				         return Promise.all([
					         fs.copyAsync(path.join(__dirname, '/build/images'), electronSourcesDir + "/resources/images"),
					         fs.copyAsync(path.join(__dirname, '/build/libs'), electronSourcesDir + "/resources/libs"),
					         fs.copyAsync(path.join(__dirname, '/build/src'), electronSourcesDir + "/resources/src"),
					         fs.copyAsync(path.join(__dirname, '/build/index.html'), electronSourcesDir + "/resources/index.html"),
					         fs.copyAsync(path.join(__dirname, '/build/index.js'), electronSourcesDir + "/resources/index.js")
				         ])
			         })
			         .then(() => {
				         console.log("Starting desktop client...")
				         const out = fs.openSync('./desktop_out.log', 'a');
				         const err = fs.openSync('./desktop_out.log', 'a');
				         //need to run "npm install --save-dev electron" in directory first!
				         spawn("/bin/sh", ["-c", "npm start"], {
					         cwd: path.join(__dirname, '/app-native/'),
					         stdio: ['ignore', out, err],
					         detached: true
				         }).unref()
			         })
		}
	})
	.then(() => {
		let now = new Date().getTime()
		let time = Math.round((now - start) / 1000 * 100) / 100
		console.log(`\n >>> Build completed in ${time}s\n`)
	})
	.then(() => {
		if (process.argv.indexOf("watch") !== -1) {
			require('chokidar-socket-emitter')({port: 9082, path: 'build', relativeTo: 'build'})
		}
	})


function createHtml(env) {
	let filenamePrefix = (env.mode == "App") ? "app" : "index"
	let imports = SystemConfig.baseDevDependencies.concat([`${filenamePrefix}.js`])
	return Promise.all([
		_writeFile(`./build/${filenamePrefix}.js`, [
			`window.whitelabelCustomizations = null`,
			`window.env = ${JSON.stringify(env, null, 2)}`,
			`System.config(env.systemConfig)`,
			`System.import("src/system-resolve.js").then(function() { System.import('src/bootstrapHotReload.js') })`
		].join("\n")),
		_writeFile(`./build/${filenamePrefix}.html`, LaunchHtml.renderHtml(imports, env))
	])
}

function _writeFile(targetFile, content) {
	return fs.mkdirsAsync(path.dirname(targetFile)).then(() => fs.writeFileAsync(targetFile, content, 'utf-8'))
}