var gulp = require('gulp'),
    exec = require('child_process').execSync,
    del = require('del'),
    fs = require('fs-extra'),
    zip = require('zip-dir');

/**
 * Install and copy the required files from the "composer" directory.
 *
 * Composer needs to be installed and configured in order for this command to
 * work properly.
 */
gulp.task('composer', function() {
    del.sync([
        './composer',
        './src/application/third_party/**/*',
        '!./src/application/third_party/index.html',
    ]);

    exec('composer update && composer install --prefer-dist', function (err, stdout, stderr) {
        console.log(stdout);
        console.log(stderr);
    });

    return gulp.src([
        'composer/**/*',
        '!composer/**/demo{,/**}',
        '!composer/**/{demo,docs,examples,test,extras,language}{,/**}',
        '!composer/**/{composer.json,composer.lock,.gitignore}',
        '!composer/**/{*.yml,*.md}',
        '!composer/codeigniter{,/**}'
    ])
        .pipe(gulp.dest('./src/application/third_party/'));
});

/**
 * Build the project and create an easyappointments.zip file ready for distribution.
 */
gulp.task('build', function(done) {
    del.sync([
        '.tmp-package',
        'easyappointments.zip'
    ]);

    fs.copySync('src', '.tmp-package');
    fs.copySync('.tmp-package/config-sample.php', '.tmp-package/config.php');
    fs.removeSync('.tmp-package/config-sample.php');
    fs.copySync('CHANGELOG.md', '.tmp-package/CHANGELOG.md');
    fs.copySync('README.md', '.tmp-package/README.md');
    fs.copySync('LICENSE', '.tmp-package/LICENSE');

    del.sync([
        '.tmp-package/application/logs/*',
        '!.tmp-package/application/logs/index.html'
    ])

    zip('.tmp-package', { saveTo: 'easyappointments.zip' }, function (err, buffer) {
        if (err)
            console.log('Zip Error', err);

        done();
    });
});

/**
 * Generate code documentation.
 */
gulp.task('doc', function(done) {
    fs.removeSync('doc');
    fs.mkdirSync('doc');
    fs.mkdirSync('doc/apigen');
    fs.mkdirSync('doc/jsdoc');
    fs.mkdirSync('doc/plato');

    var commands = [
        'php rsc/apigen.phar generate ' +
            '-s "src/application/controllers,src/application/models,src/application/libraries" ' +
            '-d "doc/apigen" --exclude "*external*" --tree --todo --template-theme "bootstrap"',

        'node node_modules/.bin/jsdoc "src/assets/js" -d "doc/jsdoc"',

        'node node_modules/.bin/plato -r -d "doc/plato" "src/assets/js"'
    ];

    commands.forEach(function(command) {
        exec(command, function (err, stdout, stderr) {
            console.log(stdout);
            console.log(stderr);
        });
    });

    done();
});