/* eslint max-nested-callbacks: 0 */
const eslint = require('gulp-eslint');
const exec = require('child_process').exec;
const gulp = require('gulp');
const jsonEditor = require('gulp-json-editor');
const path = require('path');
const util = require('util');

function execCb(cb, err, stdout, stderr) {
    console.log(stdout);
    console.error(stderr);
    cb(err);
}

const options = {
    coveragePaths: [
        '*.js',
        'lib/**/*.js',
        'plugins/*.js'
    ],
    lintPaths: [
        '*.js',
        'lib/**/*.js',
        'plugins/*.js',
        'templates/default/*.js',
        'templates/haruki/*.js',
        'test/specs/**/*.js'
    ],
    nodeBin: path.resolve(__dirname, './jsdoc.js'),
    nodePath: process.execPath
};

function bump(cb) {
    gulp.src('./package.json')
        .pipe(jsonEditor({
            revision: String( Date.now() )
        }))
        .pipe(gulp.dest('./'));

    cb();
}

function coverage(cb) {
    const cmd = util.format('./node_modules/.bin/nyc --reporter=html %s -T', options.nodeBin);

    exec(cmd, execCb.bind(null, cb));
}

function lint(cb) {
    gulp.src(options.lintPaths)
        .pipe(eslint())
        .pipe(eslint.formatEach())
        .pipe(eslint.failOnError());

    cb();
}

function test(cb) {
    const cmd = util.format('%s "%s" -T', options.nodePath, options.nodeBin);

    exec(cmd, execCb.bind(null, cb));
}

exports.bump = bump;
exports.coverage = coverage;
exports.default = gulp.series(lint, test);
exports.lint = lint;
exports.test = test;