const PM2 = require('../..');
const should = require('should');
const exec = require('child_process').exec
const path = require('path')
const fs = require('fs')

describe('Modules programmatic testing', function() {
  var pm2
  var pkg_path = path.join(__dirname, 'fixtures/version-test/package.json')

  after(function(done) {
    pm2.delete('all', function() {
      pm2.kill(done);
    })
  });

  before(function(done) {
    pm2 = new PM2.custom({
      cwd : path.join(__dirname, 'fixtures')
    });

    var pkg = JSON.parse(fs.readFileSync(pkg_path))
    pkg.version = '1.0.0'
    fs.writeFileSync(pkg_path, JSON.stringify(pkg))

    pm2.delete('all', () => done())
  })

  it('should start app and find version', function(done) {
    pm2.start('./version-test/index.js', (err) => {
      pm2.list(function(err, apps) {
        should(err).be.null()
        var real_version = JSON.parse(fs.readFileSync(path.join(__dirname, 'fixtures/version-test/package.json'))).version
        should(apps[0].pm2_env.version).equal(real_version)
        done()
      })
    })
  })

  var origin_version
  it('should update version', function(done) {
    var old = JSON.parse(fs.readFileSync(pkg_path))
    origin_version = old.version
    old.version = '2.0.0'
    fs.writeFileSync(pkg_path, JSON.stringify(old))
    pm2.restart('all', function() {
      setTimeout(() => {
        pm2.list((err, list) => {
          should(list[0].pm2_env.version).equal('2.0.0')
          done()
        })
      }, 400)
    })
  })

  it('should restore version', function(done) {
    var old = JSON.parse(fs.readFileSync(pkg_path))
    old.version = origin_version
    fs.writeFileSync(pkg_path, JSON.stringify(old))

    pm2.restart('all', function() {
      pm2.list((err, list) => {
        should(list[0].pm2_env.version).equal(origin_version)
        done()
      })
    })
  })
})