let gulp = require('gulp');
let ts = require('gulp-typescript');
let uglify = require('gulp-uglify');
let babel = require('gulp-babel');
let plumber = require('gulp-plumber');
let tsp = ts.createProject('tsconfig.json');


//常量配置
const PATHS = {
    scripts:['./src/**/*.ts'],
    output:'./build',
    minifyJs: './build/**/*.js'
};
//编译ts文件为js
gulp.task('build-ts',function(){
    return tsp.src()
    .pipe(plumber())
    .pipe(tsp())
    .pipe(gulp.dest(PATHS.output));    
});

// 压缩混淆转换js代码
gulp.task('minify-js',function(){    
    gulp.src(PATHS.minifyJs)
    .pipe(babel({
        presets: ['env']
    }))
    .pipe(uglify({
        ie8: true
    }))
    .pipe(gulp.dest(PATHS.output));
});

//当ts文件变化，重新编译ts文件为js
gulp.task('watch-ts',function(){    
    gulp.watch(PATHS.scripts,['build-ts'],['minify-js']);
});

// 复制 RSA非对称加密的 api 接口加密文件到build文件夹
gulp.task('copy',function(){
    gulp.src('src/rsa/*.pem')
    .pipe(gulp.dest(`${PATHS.output}/rsa`));
});

//开发任务
gulp.task('dev',['build-ts','minify-js','watch-ts','copy']);