import program = require('commander');
import { muddleStr } from './utils'
import path = require('path');
import fs = require('fs');
const pjson = require('../package.json')

export function parseArgs() {
    program.version(pjson.version)
        .usage('[options] <file to muddle>')
        .option('-o, --out-file <filename>', 'the name of the output file')
        .option('-w, --watch', 'watch the current directory for changes')
        .option('-W, --watch-dir <directory>', 'watch the provided directory for changes')
        .option('-d, --out-dir <directory>', 'what directory to save files to')
        .option('-c, --config <filename>', 'the location of your config file (defaults to muddle.json in the current directory)')
        .option('-v, --verbose', 'increase program verbosity. Good for debugging, or checking for sneaky hacks.')
        .option('-q, --quiet', 'disable all program output')
        .option('-s, --skip-tests', 'skip tests if they exist')
        .option('-t, --test-dir <directory>', 'the directory to search for tests.')
        .option('-R, --reporter <reporter>',  'Pass this in if you want to use a different mocha test reporter')

        .parse(process.argv);

    if (program.verbose && program.quiet) {
        console.log("Be quiet, AND be verbose, eh?  You're " + muddleStr('drunk') + ".  Go home.")
        process.exit(1);
    }

    const configFilename = program.config ? path.normalize(program.config) : path.join(process.cwd(), 'muddle.json')

    if (fs.existsSync(configFilename)) {
        const config = JSON.parse(fs.readFileSync(configFilename, 'utf8'));
        const settings = { ...config, ...program };
        return settings;
    }

    return program;
}