/*
 * Copyright 2016 resin.io
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict'

const m = require('mochainon')
const _ = require('lodash')
const supportedFormats = require('../../lib/shared/supported-formats')

describe('Shared: SupportedFormats', function () {
  describe('.getCompressedExtensions()', function () {
    it('should return the supported compressed extensions', function () {
      const extensions = supportedFormats.getCompressedExtensions().sort()
      m.chai.expect(extensions).to.deep.equal([ 'bz2', 'gz', 'xz' ].sort())
    })
  })

  describe('.getNonCompressedExtensions()', function () {
    it('should return the supported non compressed extensions', function () {
      const extensions = supportedFormats.getNonCompressedExtensions()
      m.chai.expect(extensions).to.deep.equal([
        'img', 'iso', 'bin', 'dsk', 'hddimg', 'raw', 'dmg', 'sdcard', 'rpi-sdimg', 'wic'
      ])
    })
  })

  describe('.getArchiveExtensions()', function () {
    it('should return the supported archive extensions', function () {
      const extensions = supportedFormats.getArchiveExtensions()
      m.chai.expect(extensions).to.deep.equal([ 'zip', 'etch' ])
    })
  })

  describe('.getAllExtensions()', function () {
    it('should return the union of all compressed, uncompressed, and archive extensions', function () {
      const archiveExtensions = supportedFormats.getArchiveExtensions()
      const compressedExtensions = supportedFormats.getCompressedExtensions()
      const nonCompressedExtensions = supportedFormats.getNonCompressedExtensions()
      const expected = _.union(archiveExtensions, compressedExtensions, nonCompressedExtensions).sort()
      const extensions = supportedFormats.getAllExtensions()
      m.chai.expect(extensions.sort()).to.deep.equal(expected)
    })
  })

  describe('.isSupportedImage()', function () {
    _.forEach([

      // Type: 'archive'
      'path/to/filename.zip',
      'path/to/filename.etch',

      // Type: 'compressed'
      'path/to/filename.img.gz',
      'path/to/filename.img.bz2',
      'path/to/filename.img.xz',

      // Type: 'image'
      'path/to/filename.img',
      'path/to/filename.iso',
      'path/to/filename.dsk',
      'path/to/filename.hddimg',
      'path/to/filename.raw',
      'path/to/filename.dmg',
      'path/to/filename.sdcard',
      'path/to/filename.wic'

    ], (filename) => {
      it(`should return true for ${filename}`, function () {
        const isSupported = supportedFormats.isSupportedImage(filename)
        m.chai.expect(isSupported).to.be.true
      })
    })

    it('should return false if the file has no extension', function () {
      const isSupported = supportedFormats.isSupportedImage('/path/to/foo')
      m.chai.expect(isSupported).to.be.false
    })

    it('should return false if the extension is not included in .getAllExtensions()', function () {
      const isSupported = supportedFormats.isSupportedImage('/path/to/foo.jpg')
      m.chai.expect(isSupported).to.be.false
    })

    it('should return true if the extension is included in .getAllExtensions()', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.${nonCompressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should ignore casing when determining extension validity', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.${_.toUpper(nonCompressedExtension)}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should not consider an extension before a non compressed extension', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.1234.${nonCompressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return true if the extension is supported and the file name includes dots', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.1.2.3-bar.${nonCompressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return true if the extension is only a supported archive extension', function () {
      const archiveExtension = _.first(supportedFormats.getArchiveExtensions())
      const imagePath = `/path/to/foo.${archiveExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return true if the extension is a supported one plus a supported compressed extensions', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const compressedExtension = _.first(supportedFormats.getCompressedExtensions())
      const imagePath = `/path/to/foo.${nonCompressedExtension}.${compressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return false if the extension is an unsupported one plus a supported compressed extensions', function () {
      const compressedExtension = _.first(supportedFormats.getCompressedExtensions())
      const imagePath = `/path/to/foo.jpg.${compressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.false
    })

    it('should return false if the file has no extension', function () {
      const isSupported = supportedFormats.isSupportedImage('/path/to/foo')
      m.chai.expect(isSupported).to.be.false
    })

    it('should return false if the extension is not included in .getAllExtensions()', function () {
      const isSupported = supportedFormats.isSupportedImage('/path/to/foo.jpg')
      m.chai.expect(isSupported).to.be.false
    })

    it('should return true if the extension is included in .getAllExtensions()', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.${nonCompressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should ignore casing when determining extension validity', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.${_.toUpper(nonCompressedExtension)}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should not consider an extension before a non compressed extension', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.1234.${nonCompressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return true if the extension is supported and the file name includes dots', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const imagePath = `/path/to/foo.1.2.3-bar.${nonCompressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return true if the extension is only a supported archive extension', function () {
      const archiveExtension = _.first(supportedFormats.getArchiveExtensions())
      const imagePath = `/path/to/foo.${archiveExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return true if the extension is a supported one plus a supported compressed extensions', function () {
      const nonCompressedExtension = _.first(supportedFormats.getNonCompressedExtensions())
      const compressedExtension = _.first(supportedFormats.getCompressedExtensions())
      const imagePath = `/path/to/foo.${nonCompressedExtension}.${compressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.true
    })

    it('should return false if the extension is an unsupported one plus a supported compressed extensions', function () {
      const compressedExtension = _.first(supportedFormats.getCompressedExtensions())
      const imagePath = `/path/to/foo.jpg.${compressedExtension}`
      const isSupported = supportedFormats.isSupportedImage(imagePath)
      m.chai.expect(isSupported).to.be.false
    })
  })

  describe('.looksLikeWindowsImage()', function () {
    _.each([
      'C:\\path\\to\\en_windows_10_multiple_editions_version_1607_updated_jan_2017_x64_dvd_9714399.iso',
      '/path/to/en_windows_10_multiple_editions_version_1607_updated_jan_2017_x64_dvd_9714399.iso',
      '/path/to/Win10_1607_SingleLang_English_x32.iso',
      '/path/to/en_winxp_pro_x86_build2600_iso.img'
    ], (imagePath) => {
      it(`should return true if filename is ${imagePath}`, function () {
        const looksLikeWindowsImage = supportedFormats.looksLikeWindowsImage(imagePath)
        m.chai.expect(looksLikeWindowsImage).to.be.true
      })
    })

    _.each([
      'C:\\path\\to\\2017-01-11-raspbian-jessie.img',
      '/path/to/2017-01-11-raspbian-jessie.img'
    ], (imagePath) => {
      it(`should return false if filename is ${imagePath}`, function () {
        const looksLikeWindowsImage = supportedFormats.looksLikeWindowsImage(imagePath)
        m.chai.expect(looksLikeWindowsImage).to.be.false
      })
    })
  })
})
