###
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
# Copyright 2019 Amazon.com, Inc. or its affiliates. All Rights Reserved.
# SPDX-License-Identifier: Apache-2.0
# ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
###

{assert, expect} = require('chai')
{match, spy, stub} = require('sinon')

path = require 'path'
fs = require 'fs'
rimraf = require 'rimraf'
mkdirp = require 'mkdirp'

TemplateFilesHandler = require('@src/command-line/generators/templateFilesHandler')

describe 'TemplateFilesHandler', ->
  tmpDir = 'tmp'
  loggerInterface = undefined
  filesHandler = undefined

  beforeEach ->
    loggerInterface = {
      log: () -> undefined
    }
    filesHandler = new TemplateFilesHandler({
      logger: loggerInterface
    })
    mkdirp.sync tmpDir

  afterEach ->
    if fs.existsSync(tmpDir)
      rimraf.sync(tmpDir)

  describe '#syncDir', ->
    it "doesn't write any files if no filterList is provided", ->
      filesHandler.syncDir({
        sourcePaths: [path.join 'common', 'litexa'],
        destination: 'tmp'
      })
      assert(!fs.existsSync(path.join 'tmp', 'main.litexa'),
        "main file did not get created because it wasn't in the filter list")
      assert(!fs.existsSync(path.join 'tmp', 'main.test.litexa'),
        "main test file did not get created because it wasn't in the filter list")

    it 'only writes the files that are in the filter', ->
      filesHandler.syncDir({
        sourcePaths: [path.join 'common', 'litexa'],
        destination: 'tmp',
        filterList: ['main.litexa$']
      })
      assert(fs.existsSync(path.join 'tmp', 'main.litexa'), 'main file was created')
      assert(!fs.existsSync(path.join 'tmp', 'main.test.litexa'),
        "main test file did not get created because it wasn't in the filter list")

    it 'applies each filter regex', ->
      filesHandler.syncDir({
        sourcePaths: [path.join 'common', 'litexa'],
        destination: 'tmp',
        filterList: [
          'main.litexa$'
          'main.test.litexa$'
        ]
      })
      assert(fs.existsSync(path.join 'tmp', 'main.litexa'), 'main file was created')
      assert(fs.existsSync(path.join 'tmp', 'main.test.litexa'), 'main test file created')

    it 'reads from multiple directories and cascades files based on order', ->
      filesHandler.syncDir({
        sourcePaths: [
          path.join 'common', 'typescript', 'source'
          path.join 'bundled', 'typescript', 'source'
        ],
        destination: 'tmp',
        filterList: ['.mocharc.json$']
      })
      dataString = fs.readFileSync((path.join 'tmp', '.mocharc.json'), 'utf8')
      expect(dataString).to.include('"recursive": true')

    it 'applies the data transformation function to the files it will write', ->
      test = {
        transform: (d) -> d
      }
      transformSpy = spy(test, 'transform')

      filesHandler.syncDir({
        sourcePaths: [
          path.join 'common', 'typescript', 'config'
          path.join 'bundled', 'typescript', 'config'
        ],
        destination: 'tmp',
        filterList: ['.*\\.json$'],
        dataTransform: test.transform
      })

      expect(transformSpy.callCount).to.equal(4)