'use strict';

const path = require('path');
const spawn = require('child_process').spawn;

/** The plugin's identifier */
exports.id = 'android.module.hook';

/** The Titanium CLI version that this hook is compatible with */
exports.cliVersion = '>=3.2';

function checkLine(line, logger) {
	const re = new RegExp( // eslint-disable-line security/detect-non-literal-regexp
		'(?:\u001b\\[\\d+m)?\\[?('
		+ logger.getLevels().join('|')
		+ ')\\]?\\s*(?:\u001b\\[\\d+m)?(.*)', 'i'
	);

	if (line) {
		const m = line.match(re);
		if (m) {
			logger[m[1].toLowerCase()](m[2].trim());
		} else {
			logger.debug(line);
		}
	}
}

function runCommand(cmd, args, logger) {
	// when calling on Windows, we need to escape ampersands in the command
	if (process.platform === 'win32') {
		cmd.replace(/&/g, '^&');
	}
	try {
		return new Promise(function(resolve, reject) {
			const str = 'Run "' + cmd + ' ' + args.join(' ') + '"';
			logger.log(str.yellow);
			const child = spawn(cmd, args);
			child.stdout.on('data', function(data) {
				data.toString().split('\n').forEach(function(line) {
					checkLine(line, logger);
				});
			});

			child.stderr.on('data', function(data) {
				data.toString().split('\n').forEach(function(line) {
					checkLine(line, logger);
				});
			});

			child.on('close', function(code) {
				if (code) {
					const msg = 'Failed to run command ' + args[0];
					let error = new Error(msg);
					error.code = code;
					return reject(error);
				}

				resolve();
			});
		})

	} catch (e) {
		return Promise.reject(e);
	}
}

/**
 * Initialize the hook.
 *
 * @param {Object} logger - The logger instance
 * @param {Object} config - The CLI config object
 * @param {CLI} cli - The CLI instance
 * @param {Object} appc - The node-appc library
 */
exports.init = function init(logger, config, cli, appc) {
	cli.on('cli:post-validate', function(build, finished) {
		if (!build.cli || !build.cli.timodule) {
			return finished();
		}
		return Promise.resolve()
			.then(function() {
				return runCommand('git', ['submodule', 'init'], logger)
			})
			.then(function() {
				return runCommand('git', ['submodule', 'update'], logger)
			})
			.then(finished)
			.catch(function(e) {
				logger.error(e.message);
				if (e.code) {
					process.exit(e.code);
				}
				process.exit(1);
			})
	});
	cli.on('build.module.pre.compile', function(build) {
		if (!build.cli || !build.cli.timodule) {
			return;
		}
		const javaSrc = path.join(build.projectDir, 'External', 'src', 'main', 'java', 'com');
		const javaDst = path.join(build.projectDir, 'src', 'com');
		appc.fs.copyDirSyncRecursive(javaSrc, javaDst,
			{
				preserve: true,
				logger: logger.debug
			}
		);
		const cppSrc = path.join(build.projectDir, 'External', 'jni');
		const cppDst = path.join(build.projectDir, 'native');
		appc.fs.copyDirSyncRecursive(cppSrc, cppDst,
			{
				preserve: true,
				logger: logger.debug
			}
		);

		const moduleGenTemplateDir = path.join(build.projectDir, 'templates', 'module', 'generated');
		build.androidMkTemplateFile = path.join(moduleGenTemplateDir, 'Android.mk.ejs');
		const str = 'Inject custom "Android.mk" template (' + build.androidMkTemplateFile + ')';
		logger.log(str.yellow);
	});
};