var os = require('os')
var fs = require('fs')
var path = require('path')
var cp = require('child_process')
var request = require('supertest')
var rmrf = require('rimraf')
var pkg = require('../../package.json')

request = request('http://localhost:3000')

var tmpDir = path.join(__dirname, '../../tmp')
var dbFile = path.join(tmpDir, 'db.json')
var routesFile = path.join(tmpDir, 'routes.json')

function cli (args) {
  var bin = path.join(__dirname, '../..', pkg.bin)
  return cp.spawn('node', [bin].concat(args), {
    stdio: 'inherit',
    cwd: __dirname
  })
}

/* global beforeEach, afterEach, describe, it */

describe('cli', function () {

  var child

  beforeEach(function () {
    fs.mkdirSync(tmpDir)
    fs.writeFileSync(dbFile, JSON.stringify({ posts: [] }))
    fs.writeFileSync(routesFile, JSON.stringify({ '/blog/': '/' }))
  })

  afterEach(function (done) {
    rmrf.sync(tmpDir)
    child.kill()
    setTimeout(done, 1000)
  })

  describe('db.json', function () {

    beforeEach(function (done) {
      child = cli([dbFile])
      setTimeout(done, 1000)
    })

    it('should support JSON dbFile', function (done) {
      request.get('/posts').expect(200, done)
    })

  })

  describe('seed.js', function () {

    beforeEach(function (done) {
      child = cli(['fixtures/seed.js'])
      setTimeout(done, 1000)
    })

    it('should support JS file', function (done) {
      request.get('/posts').expect(200, done)
    })

  })

  describe('http://jsonplaceholder.typicode.com/db', function () {

    beforeEach(function (done) {
      this.timeout(6000)
      child = cli(['http://jsonplaceholder.typicode.com/db'])
      setTimeout(done, 5000)
    })

    it('should support URL file', function (done) {
      request.get('/posts').expect(200, done)
    })

  })

  describe('db.json -r routes.json', function () {

    beforeEach(function (done) {
      child = cli([dbFile, '-r', routesFile])
      setTimeout(done, 1000)
    })

    it('should use routes.json', function (done) {
      request.get('/blog/posts').expect(200, done)
    })

  })

  // FIXME test fails on OS X and maybe on Windows
  // But manually updating db.json works...
  if (os.platform() === 'linux') {
    describe('--watch db.json -r routes.json', function () {

      beforeEach(function (done) {
        child = cli(['--watch', dbFile, '-r', routesFile])
        setTimeout(done, 1000)
      })

      it('should watch db file', function (done) {
        fs.writeFileSync(dbFile, JSON.stringify({ foo: [] }))
        setTimeout(function () {
          request.get('/foo').expect(200, done)
        }, 1000)
      })

      it('should watch routes file', function (done) {
        // Can be very slow
        this.timeout(10000)
        fs.writeFileSync(routesFile, JSON.stringify({ '/api/': '/' }))
        setTimeout(function () {
          request.get('/api/posts').expect(200, done)
        }, 9000)
      })

    })
  }

})