'use strict';
const 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'),
del = require('del'),
jsonlint = require('jsonlint'),
inlineimg = require('gulp-inline-images-no-http'),
path = require('path');
function buildTask(options) {
// Requires: 'dupe', 'less', 'sass', 'postcss', 'lint'.
gulp.task(
'build',
function build(done) {
/**
* 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() {
const context = {
...conf,
stylesheets: stylesheets
.filter(function filterFiles (file) {
/* Read only CSS files. */
return file.match(/.*\.css/) ? true : false;
})
.reduce(function (prev, current, index, acc) {
var cssPath = path.win32.basename(current);
return (prev += '');
}, '')
}
options
.src([cwd + '/**/*.html', '!' + cwd + '/**/*.inc.html'])
.pipe(
preprocess({ context })
)
.pipe(inlineimg())
.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). */
return del(options.dist)
.then(function buildStart() {
/**
* Loop through dirs and load their conf files.
* Promisify all 'makeTemplate' calls and when resolved, 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));
});
Promise.all(promises);
})
.then(() => done())
.catch((err) => console.log(err));
}
);
}
module.exports = buildTask;