var gulp = require('gulp');
var bump = require('gulp-bump');
var git  = require('gulp-git');
var push = require('gulp-git-push');

gulp.task('bump', function() {
  return gulp.src('./package.json')
        // bump package.json version
        .pipe(bump({type: 'patch'}))
        // save bumped file into filesystem
        .pipe(gulp.dest('./'))
        // commit changes
        .pipe(git.commit('bump version'))
        // push local changes to repository
        .pipe(push({                      
            repository: 'origin',
            refspec: 'HEAD'
        }));
});

var gulp = require('gulp');
var bump = require('gulp-bump');
var git  = require('gulp-git');
var gutil = require('gulp-util');
var filter = require('gulp-filter');
var exec = require('child_process').exec;
var argv = require('yargs')
    .option('type', {
        alias: 't',
        choices: ['patch', 'minor', 'major']
    }).argv;
var tag = require('gulp-tag-version');
var push = require('gulp-git-push');

/**
 *  Bumping and tagging version, and pushing changes to repository.
 *
 *  You can use the following commands:
 *      gulp release --type=patch   # makes: v1.0.0 → v1.0.1
 *      gulp release --type=minor   # makes: v1.0.0 → v1.1.0
 *      gulp release --type=major   # makes: v1.0.0 → v2.0.0
 *
 *  Please read http://semver.org/ to understand which type to use.
 *
 *  The 'gulp release' task is an example of a release task for a NPM package.
 *  This task will run 'publish' as a dependent and 'bump'.
 **/

gulp.task('bump', function() {
  return gulp.src(['./package.json', './bower.json'])
        // bump package.json and bowser.json version
        .pipe(bump({
            type: argv.type || 'patch'
        }))
        // save the bumped files into filesystem
        .pipe(gulp.dest('./'))
        // commit the changed files
        .pipe(git.commit('bump version'))
        // filter one file
        .pipe(filter('package.json'))
        // create tag based on the filtered file
        .pipe(tag())
        // push changes into repository
        .pipe(push({                      
            repository: 'origin',
            refspec: 'HEAD'
        }))
});

gulp.task('publish', ['bump'], function (done) {
    // run npm publish terminal command
    exec('npm publish',
        function (error, stdout, stderr) {
            if (stderr) {
                gutil.log(gutil.colors.red(stderr));
            } else if (stdout) {
                gutil.log(gutil.colors.green(stdout));
            }
            // execute callback when its done
            if (done) {
                done();
            }
        }
    );
});

gulp.task('release', ['publish'], function () {});