gulpfile.js

var gulp = require('gulp');
var ngAnnotate = require('gulp-ng-annotate');
var concat = require('gulp-concat');
var sass = require('gulp-sass');
var minifyCss = require('gulp-minify-css');
var template = require('gulp-template');
var uglify = require('gulp-uglify');
var gulpif = require('gulp-if');
var notifier = require('node-notifier');
var gitRev = require('git-rev');
var fs = require('fs');
var stripJsonComments = require('strip-json-comments');
var Q = require('q');
var _ = require('lodash');

var isWatch = false;
var options = {
    minify: process.argv.indexOf('--minify') !== -1 || process.argv.indexOf('--uglify') !== -1,
    defaultAppConfig: process.argv.indexOf('--defaultappconfig') !== -1
};

var buildAppConfig = function() {
    var def = Q.defer();

    gitRev.branch(function(branch) {
        gitRev.short(function(rev) {
            var config = {
                VERSION: branch + ":" + rev
            };

            var configFiles = options.defaultAppConfig ? ['./appconfig.default.json'] : ['./appconfig.json', './appconfig.default.json'];

            configFiles.forEach(function(filename) {
                if (filename && fs.existsSync(filename)) {
                    var json = fs.readFileSync(filename);

                    if (json) {
                        var data = JSON.parse(stripJsonComments(json.toString('utf8')));
                        config = _.defaults(config, data);
                    }
                }
            });

            def.resolve(config);
        });
    });

    return def.promise;
};

var appConfig = Q.fcall(buildAppConfig);

gulp.task('appconfig', function() {
    appConfig = Q.fcall(buildAppConfig);
});

gulp.task('js:libs', ['appconfig'], function(done) {
    appConfig.then(function(APPCONFIG) {
        gulp.src([
            './src/libs/jquery/dist/jquery.min.js',
            './src/libs/angular/angular.js',
            './src/libs/angular-ui/ui-bootstrap-tpls.js',

            './src/libs/qrcode-decode-js/lib/qrcode-decodeer.js',
            './src/libs/html5-qrcode/lib/jsqrcode-combined.min.js',
            './src/libs/html5-qrcode/src/html5-qrcode.js',

            './src/libs/pdfjs-dist/build/pdf.combined.js'
        ])
            .pipe(concat('libs.js'))
            .pipe(gulpif(APPCONFIG.minify || options.minify, uglify()))
            .pipe(gulp.dest('./build/js/'))
            .on('end', done);
    });
});

gulp.task('js:node-config', function(done) {
    gulp.src([
        './src/js/nw-config.js'
    ])
        .pipe(concat('nw-config.js'))
        .pipe(ngAnnotate())
        .on('error', function(e) {
            if (isWatch) {
                notifier.notify({
                    title: 'GULP watch + js:node-config Error',
                    message: e.message
                });
                console.error(e);
                this.emit('end');
            } else {
                throw e;
            }
        })
        .pipe(gulpif(options.minify, uglify()))
        .pipe(gulp.dest('./build/js/'))
        .on('end', done);
});

gulp.task('js:app', ['appconfig'], function(done) {
    appConfig.then(function(APPCONFIG) {
        gulp.src([
            './src/js/**/*.js',
            '!./src/js/nw-config.js'
        ])
            .pipe(concat('app.js'))
            .pipe(ngAnnotate())
            .on('error', function (e) {
                if (isWatch) {
                    notifier.notify({
                        title: 'GULP watch + js:app + ngAnnotate ERR',
                        message: e.message
                    });
                    console.error(e);
                    this.emit('end');
                } else {
                    throw e;
                }
            })
            .pipe(gulpif(APPCONFIG.minify || options.minify, uglify()))
            .pipe(gulp.dest('./build/js/'))
            .on('end', done);
    });
});

gulp.task('js:sdk', ['appconfig'], function(done) {
    appConfig.then(function(APPCONFIG) {
        gulp.src([
            "./src/libs/blocktrail-sdk/build/asmcrypto.js",
            "./src/libs/blocktrail-sdk/build/blocktrail-sdk-full.js"
        ])
            .pipe(concat('sdk.js'))
            .pipe(gulpif(APPCONFIG.minify || options.minify, uglify({
                mangle: {
                    except: ['Buffer', 'BigInteger', 'Point', 'Script', 'ECPubKey', 'ECKey']
                }
            })))
            .pipe(gulp.dest('./build/js/'))
            .on('end', done);
    });
});

gulp.task('sass', ['appconfig'], function(done) {
    appConfig.then(function(APPCONFIG) {
        gulp.src('./src/scss/**/*.scss')
            .pipe(sass({errLogToConsole: true}))
            .pipe(gulpif(APPCONFIG.minify || options.minify, minifyCss({keepSpecialComments: 0})))
            .pipe(gulp.dest('./build/css/'))
            .on('end', done);
    });
});

gulp.task('templates:index', ['appconfig'], function(done) {
    appConfig.then(function(APPCONFIG) {
        gulp.src("./src/index.html")
            .pipe(template({
                VERSION: APPCONFIG.VERSION,
                APPCONFIG: APPCONFIG,
                GOOGLE_RECAPTCHA_SITE_KEY: APPCONFIG.GOOGLE_RECAPTCHA_SITE_KEY,
                APPCONFIG_JSON: JSON.stringify(APPCONFIG)
            }))
            .pipe(gulp.dest("./build"))
            .on('end', done);
    });
});

gulp.task('templates:rest', function(done) {
    gulp.src(["./src/templates/**/*"])
        .pipe(gulp.dest("./build/templates"))
        .on('end', done);
});

gulp.task('copyfonts', function(done) {
    gulp.src('./src/fonts/**/*.{ttf,woff,eof,eot,svg}')
        .pipe(gulp.dest('./build/fonts'))
        .on('end', done);
});

gulp.task('copyimages', function(done) {
    gulp.src('./src/logo.png')
        .pipe(gulp.dest('./build'))
        .on('end', done);
});


/*---Main tasks---*/
gulp.task('js', ['js:libs', 'js:app', 'js:sdk']);
gulp.task('templates', ['templates:index', 'templates:rest']);
gulp.task('default', ['sass', 'templates', 'js', 'copyfonts', 'copyimages']);

/*---Watch tasks---*/
gulp.task('watch', function() {
    isWatch = true;

    gulp.watch(['./src/scss/**/*.scss'], ['sass']);
    gulp.watch(['./src/js/**/*.js'], ['js:app']);
    gulp.watch(['./src/lib/**/*.js'], ['js:libs', 'js:sdk']);
    gulp.watch(['./src/templates/**/*', './src/index.html'], ['templates']);
    gulp.watch(['./appconfig.json', './appconfig.default.json'], ['default']);
});