#!/usr/bin/env node

// Load modules

var Fs = require('fs');
var Yargs = require('yargs');
var Alce = require('alce');
var Confidence = require('../');


// Declare internals

var internals = {};


internals.argv = Yargs.usage('Usage: $0 -c config.json [--filter.criterion=value]')
                    .demand(['c'])
                    .argv;


internals.getConfig = function () {

    var config = null;
    var configPath = internals.argv.c[0] !== '/' ? process.cwd() + '/' + internals.argv.c : internals.argv.c;

    try {
        config = Alce.parse(Fs.readFileSync(configPath));
    }
    catch (err) {
        console.log('Failed loading configuration file: ' + internals.argv.c + ' (' + err.message + ')');
        process.exit(1);
    }

    return config;
}


internals.generate = function () {

    var config = internals.getConfig();
    var store = new Confidence.Store(config);
    var set = store.get('/', internals.argv.filter);

    if (!set) {
        process.stderr.write('Failed to generate document');
    }

    process.stdout.write(JSON.stringify(set, null, 4));
};

internals.generate();