import gulp from 'gulp'

import nodemon from 'gulp-nodemon'

import eslint from 'gulp-eslint'

import rename from 'gulp-rename'

import loopbackAngular from 'gulp-loopback-sdk-angular'

import runSequence from 'run-sequence'

const debugEnabled = process.env.DEBUG_API

const apiUrl = process.env.API_URL || 'http://0.0.0.0:3000/api'

const babelNode = './node_modules/.bin/babel-node'

const exec = debugEnabled ? `${babelNode} --debug` : `${babelNode}`

// ESLint configuration

gulp.task('lint', () => gulp

.src([

'src/client/**/*.js',

'common/**/*.js',

'server/**/*.js',

])

.pipe(eslint())

.pipe(eslint.format())

.pipe(eslint.failAfterError())

)

// This task wraps around the three tasks below

gulp.task('loopback', (cb) => runSequence(

'loopback:before',

'loopback:codegen',

'loopback:after',

cb)

)

// Set the ENV env var to 'codegen' to skip some boot scripts.

gulp.task('loopback:before', () => {

global.originalEnv = process.env.ENV

process.env.ENV = 'codegen'

})

// Restore the original value of the ENV env var store by the loopback:before script

gulp.task('loopback:after', () => {

process.env.ENV = global.originalEnv

})

// The actual generation of the LoopBack Angular SDK

gulp.task('loopback:codegen', () => gulp

.src('./server/server.js')

.pipe(loopbackAngular({ apiUrl }))

.pipe(rename('lb-services.js'))

.pipe(gulp.dest('./src/client/lib'))

)

// Serve the LoopBack server with nodemon

gulp.task('serve', () => nodemon({

exec,

script: 'server/server.js',

watch: [ 'server/', 'common/' ],

ext: 'js json',

tasks: [ 'lint' ],

}))

// The default taks

gulp.task('default', [

'lint',

'loopback',

'serve',

])