'use strict';
var gulp = require('gulp'),
inlineCss = require('gulp-inline-css'),
minifyHTML = require('gulp-minify-html'),
minifyInline = require('gulp-minify-inline'),
preprocess = require('gulp-preprocess'),
rename = require('gulp-rename'),
klaw = require('klaw'),
fs = require('fs'),
Q = require('q'),
del = require('del'),
jsonlint = require('jsonlint'),
inlineimg = require('gulp-inline-image-html');
function buildTask(options){
gulp.task('build', ['dupe', 'less', 'sass', 'postcss', 'lint'], function build() {
/** Makes templates for a given directory & its configurations.
* @function makeTemplates
* @param {String} dir Directory to make templates from.
* @param {Array} confItems A list of configurations objects (usually persons) to make templates from.
*/
function makeTemplates(dir, confItems){
confItems.forEach(function handleConf(conf){
var cwd = options.workingDir + '/' + dir;
var stylesheets = [];
/**
* Find stylesheets relative to the CWD & generate tags.
* This way we can automagically inject them into .
*/
klaw(cwd)
.on('readable', function walkTemplateDir() {
var stylesheet;
while (stylesheet = this.read()) {
var relativePath = __dirname.substring(0, __dirname.lastIndexOf('/')) + '/tmp/' + dir;
stylesheets.push(stylesheet.path.replace(relativePath, ''));
}
})
.on('end', function finishedTemplateDirWalk() {
conf.stylesheets = stylesheets
.filter(function filterFiles(file) {
/* Read only CSS files. */
return (file.match(/.*\.css/)) ? true : false;
})
.reduce(function(prev, current, index, acc){
return prev += '';
}, '');
options
.src([cwd + '/**/*.html', '!' + cwd + '/**/*.inc.html'])
.pipe(preprocess({
context: conf
}))
.pipe(inlineimg(cwd))
.pipe(inlineCss({
applyTableAttributes: true,
applyWidthAttributes: true,
preserveMediaQueries: true,
removeStyleTags: false
}))
.pipe(minifyHTML({quotes: true}))
.pipe(minifyInline())
.pipe(rename(function rename(path){
path.dirname = dir;
path.basename += '-' + conf.id;
return path;
}))
.pipe(gulp.dest(options.dist));
})
});
}
/** Clean up & then read 'src' to generate templates (build entry point). */
del(options.dist)
.then(function buildStart(){
/**
* Loop through dirs and load their conf files.
* Promisify all 'makeTemplate' calls and when resolved, make a call to the task (`cb`) to let gulp know we're done.
*/
var files = [];
var promises = [];
fs
.readdirSync('./' + options.workingDir)
.forEach(function readConfigurations(dir){
/** NB: For 'watch' to properly work, the cache needs to be deleted before each require. */
var confPath = '../tmp/' + dir + '/conf.json';
var current = null;
var confItems;
delete require.cache[require.resolve(confPath)];
current = require(confPath);
if (current && current.length) {
confItems = [...current]
} else {
confItems = [current]
}
promises.push(makeTemplates(dir, confItems));
});
Q.all(promises);
})
.catch(function (err) { console.log(err) })
});
}
module.exports = buildTask;