const watchers = require('./libs/watchers.js');
const util = require('./libs/util.js');
const logger = require('./libs/logger.js');
const packageJSON = require('./package.json');

const INTERRUPTS = ['SIGINT', 'SIGTERM'];

main();

async function main() {
    handleInterrupts();
    try {
        let configFile = await util.getFileInfo(process.argv[2] || __dirname + '/config.json');
        global.config = require(configFile.path);
        global.config.path = configFile.path;
    } catch (err) {
        console.error(err);
        process.exit(1);
    }
    try {
        logger.initialize(global.config.log.level, global.config.log.timestamp);
        logger.info(packageJSON.name + ' ' + packageJSON.version + ' starting...');
        await watchers.initialize(global.config.watchers);
        await watchers.start();
    } catch (err) {
        logger.error(err);
        exit(1);
    }
}

function handleInterrupts() {
    for (var index = 0; index < INTERRUPTS.length; index++) {
        process.on(INTERRUPTS[index], (code) => {
            exit(code);
            watchers.stop()
                .then(exit(code))
                .catch(exit(code));
        });
    }
}

function exit(code) {
    code = code || 0;
    logger.info(packageJSON.name + ' ' + packageJSON.version + ' exiting with code \'' + code + '\'...');
    process.exit(code);
}