'use strict';

var gulp = require('gulp');
var gulpif = require('gulp-if');
var sass = require('gulp-sass');
var watch = require('gulp-watch');
var autoprefixer = require('gulp-autoprefixer');
var jsmin = require('gulp-jsmin');
var stripDebug = require('gulp-strip-debug');
var cssmin = require('gulp-cssmin');
var rename = require('gulp-rename');
var mainBowerFiles = require('main-bower-files');
// var jsonToSass = require('gulp-json-to-sass');
// var concat = require('gulp-concat');
var svgmin = require('gulp-svgmin');
// var fs = require('fs');
// var json2js = require('gulp-json2js');
// var data = require('gulp-data');

// var shared_variables = JSON.parse(fs.readFileSync('./assets/json/shared_variables.json'));

// to get minified assets run `gulp --env=prod`
var argv = require('minimist')(process.argv.slice(2));
console.dir(argv);
var prod = argv.env == 'prod' ? true : false;

function handleError(err) {
  console.log(err.toString());
}

gulp.task('scripts', done => {
  gulp.src(['./assets/scripts/main.js', './assets/scripts/redirect.js']) // './assets/scripts/shared_variables.js',
    // .pipe(concat('main.js'))
    .pipe(gulpif(prod, stripDebug()))
    .pipe(gulpif(prod, jsmin()))
    .pipe(rename({suffix: '.min'}))
    .pipe(gulp.dest('./assets/dist/scripts/'));
  done()
});

gulp.task('styles', done => {
  gulp.src(['./assets/styles/app.scss'])
    .pipe(sass().on('error', sass.logError))
    .pipe(autoprefixer({
        browsers: ['last 2 versions'],
        cascade: false
    })).on('error', handleError)
    // .pipe(prod ? cssmin() : util.noop())
    .pipe(gulpif(prod, cssmin()))
    // .pipe(cssmin())
    .pipe(rename({suffix: '.min'}))
    .pipe(gulp.dest('./assets/dist/styles/'));
  done()
});

gulp.task('bower', done => {
  gulp.src(mainBowerFiles({
    "overrides":{
      "masonry-layout":{
        "main":"./dist/masonry.pkgd.min.js"
      },
      "imagesloaded":{
        "main":"./imagesloaded.pkgd.min.js"
      },
      "jquery":{"ignore":true},
      "ev-emitter":{"ignore":true},
      "fizzy-ui-utils":{"ignore":true},
      "get-size":{"ignore":true},
      "outlayer":{"ignore":true},
    }
  }))
    .pipe(gulp.dest('./assets/dist/bower/'));
  done()
});

gulp.task('svg', done => {
  gulp.src(['./assets/img/*.svg', '!./assets/img/edlp-loader-anim.svg'])
    .pipe(svgmin())
    .pipe(gulp.dest('./assets/dist/img'));
  gulp.src('./assets/img/edlp-loader-anim.svg')
    .pipe(gulp.dest('./assets/dist/img'));
  done()
});

// default gulp task
// ,  'vars2sass' 'vars2js',
// gulp.task('default', ['bower', 'scripts', 'styles', 'svg'], function() {
gulp.task('default', gulp.series('bower', 'scripts', 'styles', 'svg', function(done) {
  // gulp.watch('./assets/json/*.json', ['vars2js', 'styles', 'scripts']); //, 'vars2sass'
  gulp.watch('./assets/styles/*.scss', gulp.series('styles'));
  gulp.watch('./assets/styles/base/*.scss', gulp.series('styles'));
  gulp.watch('./assets/scripts/*.js', gulp.series('scripts'));
  gulp.watch('./assets/img/*.svg', gulp.series('svg'));
  done()
}));



// this task stays here just for memeomry about how to share variables between js and css

// gulp.task('vars2sass', function () {
//   gulp.src('./assets/json/shared_variables.json')
//     .pipe(jsonToSass({
//       jsonPath: './assets/json/shared_variables.json',
//       scssPath: './assets/styles/base/_shared_variables.scss'
//     }));
// });

// this one is not working, works first run but then it's like it's caching the source
// gulp.task('variables2js', function() {
//   gulp.src('./assets/scripts/shared_variables_model.js')
//     .pipe(rename('shared_variables.js'))
//     .pipe(data(function(file) {
//       delete require.cache['./assets/json/shared_variables.json'];
//       return require('./assets/json/shared_variables.json');
//     }))
//     .pipe(json2js())
//     .pipe(gulp.dest('./assets/scripts/'));
// });

// gulp.task('vars2js', function() {
//   gulp.src('./assets/json/shared_variables.json')
//     .pipe(rename('shared_variables.js'))
//     .pipe(through.obj(function (file, enc, cb) {
//       // console.log('file',String(file.contents));
//       // small pipe to wrappe json data into a js variable
//       file.contents = new Buffer("edlp_vars = "+String(file.contents).trim()+";");
//       cb(null, file);
//     }))
//     .pipe(gulp.dest('./assets/scripts/'));
// });