const gulp = require('gulp');

const autoprefixer = require('gulp-autoprefixer');

const browserSync = require('browser-sync');

const cleaner = require('gulp-clean');

const concat = require('gulp-concat');

const cp = require('child_process');

const fs = require('fs');

const git = require('gulp-git');

const markdownpdf = require("markdown-pdf");

const plumber = require('gulp-plumber');

const request = require('request');

const runSequence = require('run-sequence').use(gulp);

const sass = require('gulp-sass');

const sourcemaps = require('gulp-sourcemaps');

const uglify = require('gulp-uglify');

const zip = require('gulp-zip');

function clean() {

return gulp.src(['_site', '.tmp', 'app/_data/events', 'app/_posts'], {read: false, allowEmpty: true})

.pipe(cleaner());

}

exports.clean = clean;

function copyAssets() {

return gulp.src('.tmp/assets/**')

.pipe(gulp.dest('_site/assets'));

}

exports.copyAssets = copyAssets;

function styles() {

const sassInput = 'app/assets/styles/*.scss';

const sassOptions = {

includePaths: ['node_modules/foundation-sites/scss','node_modules/@fortawesome/fontawesome-free/scss','.tmp/assets/styles' ],

errLogToConsole: true,

outputStyle: 'expanded'

};

return gulp.src(sassInput)

.pipe(plumber())

.pipe(sourcemaps.init())

.pipe(sass(sassOptions).on('error', sass.logError))

.pipe(autoprefixer())

.pipe(sourcemaps.write('.'))

.pipe(browserSync.reload({stream:true}))

.pipe(gulp.dest('.tmp/assets/styles'));

}

exports.styles = styles;

function icons() {

return gulp.src('node_modules/@fortawesome/fontawesome-free/webfonts/**.*')

.pipe(gulp.dest('.tmp/assets/fonts'));

}

exports.icons = icons

function javascripts() {

const javascriptPaths = [

// the order of these matter

'app/assets/scripts/*.js',

'node_modules/@fortawesome/fontawesome-free/js/all.min.js'

]

/* https://github.com/Foundation-for-Jekyll-sites/jekyll-foundation/blob/master/gulp/tasks/javascript.js */

return gulp.src(javascriptPaths)

.pipe(concat('main.min.js'))

// .pipe(uglify({ mangle: false }))

.pipe(gulp.dest('.tmp/assets/scripts'))

}

exports.javascripts = javascripts;

function zipMaterials() {

return gulp.src('app/assets/downloads/mapathon-materials/**', { base : "app/assets/downloads/" })

.pipe(zip('mapathon-materials.zip'))

.pipe(gulp.dest('.tmp/assets/downloads'))

}

exports.zipMaterials = zipMaterials;

function validationPdf(cb) {

markdownpdf({

cssPath: 'app/assets/styles/github-markdown.css',

paperFormat: 'Letter'})

.from('app/assets/sources/MissingMaps_validation_josm_en.md')

.to(".tmp/assets/downloads/MissingMaps_validation_josm_en.pdf", function () {

console.log("Done converting MissingMaps_validation_josm_en.md to PDF.")

cb();

})

}

exports.validationPdf = validationPdf;

function cloneEvents(cb) {

git.clone('https://github.com/MissingMaps/events', {args: './app/_data/events'}, function(err) {

// handle err

cb();

});

}

exports.cloneEvents = cloneEvents

function cloneBlog(cb) {

git.clone('https://github.com/MissingMaps/blog', {args: './app/_posts'}, function(err) {

// handle err

cb();

});

}

exports.cloneBlog = cloneBlog

/* Build the jekyll website. */

function jekyll(done) {

const args = ['exec', 'jekyll', 'build'];

switch (environment) {

case 'development':

args.push('--config=_config.yml,_config-dev.yml');

break;

case 'production':

args.push('--config=_config.yml');

break;

}

return cp.spawn('bundle', args, {stdio: 'inherit'})

.on('close', done);

}

exports.jekyll = jekyll;

/* different build options */

/* ======================= */

function watching() {

function browserReload(cb) { browserSync.reload(); cb(); }

browserSync({

server: '_site'

});

gulp.watch(['./app', './_config*'], gulp.series(

jekyll,

gulp.parallel(javascripts, styles, icons),

copyAssets,

browserReload));

}

exports.serve = gulp.series(

clean,

gulp.parallel(cloneEvents, cloneBlog),

jekyll,

gulp.parallel(javascripts, styles, icons, zipMaterials, validationPdf),

copyAssets,

watching);

var environment = 'development';

function setProd(cb) { environment = 'production'; cb(); }

exports.prod = gulp.series(

clean,

gulp.parallel(cloneEvents, cloneBlog),

setProd,

jekyll,

gulp.parallel(javascripts, styles, icons, zipMaterials, validationPdf),

copyAssets);

///////////////////////////////////////////////////////////////////////////////

//--------------------------- Humans task -----------------------------------//

//---------------------------------------------------------------------------//

// gulp.task('get-humans', function(){

//

// var getHumans = function(callback){

// var options = {

// url: 'https://api.github.com/repos/MissingMaps/missingmaps.github.io/contributors',

// headers: {

// 'User-Agent': 'request'

// }

// };

//

// request(options, function (err, res) {

// var humans = JSON.parse(res.body).map(function(human){

// return {login: human.login, html_url: human.html_url, contributions: human.contributions}

// });

// humans.sort(function(a,b){

// return b.contributions - a.contributions;

// })

// callback(humans);

// });

// }

//

// getHumans(function(humans){

// fs.readFile('./docs/humans-tmpl.txt', 'utf8', function (err, doc) {

// if (err) throw err;

// //Do your processing, MD5, send a satellite to the moon, etc.

// for (i = 0; i < humans.length; i++) {

// doc = doc + '\nContributor: '+humans[i].login + '\nGithub: '+humans[i].html_url +'\n';

// }

// fs.writeFile('./app/humans.txt', doc, function(err) {

// if (err) throw err;

// console.log('complete');

// });

// });

// });

// });