require 'jasmine-json'
require '../src/window'
require '../vendor/jasmine-jquery'
path = require 'path'
_ = require 'underscore-plus'
fs = require 'fs-plus'
Grim = require 'grim'
pathwatcher = require 'pathwatcher'
FindParentDir = require 'find-parent-dir'

TextEditor = require '../src/text-editor'
TextEditorElement = require '../src/text-editor-element'
TokenizedBuffer = require '../src/tokenized-buffer'
clipboard = require '../src/safe-clipboard'

jasmineStyle = document.createElement('style')
jasmineStyle.textContent = atom.themes.loadStylesheet(atom.themes.resolveStylesheet('../static/jasmine'))
document.head.appendChild(jasmineStyle)

fixturePackagesPath = path.resolve(__dirname, './fixtures/packages')
atom.packages.packageDirPaths.unshift(fixturePackagesPath)

document.querySelector('html').style.overflow = 'auto'
document.body.style.overflow = 'auto'

Set.prototype.jasmineToString = ->
  result = "Set {"
  first = true
  @forEach (element) ->
    result += ", " unless first
    result += element.toString()
  first = false
  result + "}"

Set.prototype.isEqual = (other) ->
  if other instanceof Set
    return false if @size isnt other.size
    values = @values()
    until (next = values.next()).done
      return false unless other.has(next.value)
    true
  else
    false

jasmine.getEnv().addEqualityTester(_.isEqual) # Use underscore's definition of equality for toEqual assertions

if process.env.CI
  jasmine.getEnv().defaultTimeoutInterval = 60000
else
  jasmine.getEnv().defaultTimeoutInterval = 5000

{resourcePath, testPaths} = atom.getLoadSettings()

if specPackagePath = FindParentDir.sync(testPaths[0], 'package.json')
  packageMetadata = require(path.join(specPackagePath, 'package.json'))
  specPackageName = packageMetadata.name

if specDirectory = FindParentDir.sync(testPaths[0], 'fixtures')
  specProjectPath = path.join(specDirectory, 'fixtures')
else
  specProjectPath = path.join(__dirname, 'fixtures')

beforeEach ->
  documentTitle = null

  atom.project.setPaths([specProjectPath])

  window.resetTimeouts()
  spyOn(_._, "now").andCallFake -> window.now
  spyOn(window, "setTimeout").andCallFake window.fakeSetTimeout
  spyOn(window, "clearTimeout").andCallFake window.fakeClearTimeout

  spy = spyOn(atom.packages, 'resolvePackagePath').andCallFake (packageName) ->
    if specPackageName and packageName is specPackageName
      resolvePackagePath(specPackagePath)
    else
      resolvePackagePath(packageName)
  resolvePackagePath = _.bind(spy.originalValue, atom.packages)

  # prevent specs from modifying Atom's menus
  spyOn(atom.menu, 'sendToBrowserProcess')

  # reset config before each spec
  atom.config.set "core.destroyEmptyPanes", false
  atom.config.set "editor.fontFamily", "Courier"
  atom.config.set "editor.fontSize", 16
  atom.config.set "editor.autoIndent", false
  atom.config.set "core.disabledPackages", ["package-that-throws-an-exception",
    "package-with-broken-package-json", "package-with-broken-keymap"]
  atom.config.set "editor.useShadowDOM", true
  advanceClock(1000)
  window.setTimeout.reset()

  # make editor display updates synchronous
  TextEditorElement::setUpdatedSynchronously(true)

  spyOn(pathwatcher.File.prototype, "detectResurrectionAfterDelay").andCallFake -> @detectResurrection()
  spyOn(TextEditor.prototype, "shouldPromptToSave").andReturn false

  # make tokenization synchronous
  TokenizedBuffer.prototype.chunkSize = Infinity
  spyOn(TokenizedBuffer.prototype, "tokenizeInBackground").andCallFake -> @tokenizeNextChunk()

  clipboardContent = 'initial clipboard content'
  spyOn(clipboard, 'writeText').andCallFake (text) -> clipboardContent = text
  spyOn(clipboard, 'readText').andCallFake -> clipboardContent

  addCustomMatchers(this)

afterEach ->
  atom.reset()

  document.getElementById('jasmine-content').innerHTML = '' unless window.debugContent

  warnIfLeakingPathSubscriptions()
  waits(0) # yield to ui thread to make screen update more frequently

warnIfLeakingPathSubscriptions = ->
  watchedPaths = pathwatcher.getWatchedPaths()
  if watchedPaths.length > 0
    console.error("WARNING: Leaking subscriptions for paths: " + watchedPaths.join(", "))
  pathwatcher.closeAllWatchers()

ensureNoDeprecatedFunctionsCalled = ->
  deprecations = Grim.getDeprecations()
  if deprecations.length > 0
    originalPrepareStackTrace = Error.prepareStackTrace
    Error.prepareStackTrace = (error, stack) ->
      output = []
      for deprecation in deprecations
        output.push "#{deprecation.originName} is deprecated. #{deprecation.message}"
        output.push _.multiplyString("-", output[output.length - 1].length)
        for stack in deprecation.getStacks()
          for {functionName, location} in stack
            output.push "#{functionName} -- #{location}"
        output.push ""
      output.join("\n")

    error = new Error("Deprecated function(s) #{deprecations.map(({originName}) -> originName).join ', '}) were called.")
    error.stack
    Error.prepareStackTrace = originalPrepareStackTrace

    throw error

emitObject = jasmine.StringPrettyPrinter.prototype.emitObject
jasmine.StringPrettyPrinter.prototype.emitObject = (obj) ->
  if obj.inspect
    @append obj.inspect()
  else
    emitObject.call(this, obj)

jasmine.unspy = (object, methodName) ->
  throw new Error("Not a spy") unless object[methodName].hasOwnProperty('originalValue')
  object[methodName] = object[methodName].originalValue

jasmine.attachToDOM = (element) ->
  jasmineContent = document.querySelector('#jasmine-content')
  jasmineContent.appendChild(element) unless jasmineContent.contains(element)

deprecationsSnapshot = null
jasmine.snapshotDeprecations = ->
  deprecationsSnapshot = _.clone(Grim.deprecations)

jasmine.restoreDeprecationsSnapshot = ->
  Grim.deprecations = deprecationsSnapshot

jasmine.useRealClock = ->
  jasmine.unspy(window, 'setTimeout')
  jasmine.unspy(window, 'clearTimeout')
  jasmine.unspy(_._, 'now')

addCustomMatchers = (spec) ->
  spec.addMatchers
    toBeInstanceOf: (expected) ->
      notText = if @isNot then " not" else ""
      this.message = => "Expected #{jasmine.pp(@actual)} to#{notText} be instance of #{expected.name} class"
      @actual instanceof expected

    toHaveLength: (expected) ->
      if not @actual?
        this.message = => "Expected object #{@actual} has no length method"
        false
      else
        notText = if @isNot then " not" else ""
        this.message = => "Expected object with length #{@actual.length} to#{notText} have length #{expected}"
        @actual.length is expected

    toExistOnDisk: (expected) ->
      notText = this.isNot and " not" or ""
      @message = -> return "Expected path '" + @actual + "'" + notText + " to exist."
      fs.existsSync(@actual)

    toHaveFocus: ->
      notText = this.isNot and " not" or ""
      if not document.hasFocus()
        console.error "Specs will fail because the Dev Tools have focus. To fix this close the Dev Tools or click the spec runner."

      @message = -> return "Expected element '" + @actual + "' or its descendants" + notText + " to have focus."
      element = @actual
      element = element.get(0) if element.jquery
      element is document.activeElement or element.contains(document.activeElement)

    toShow: ->
      notText = if @isNot then " not" else ""
      element = @actual
      element = element.get(0) if element.jquery
      @message = -> return "Expected element '#{element}' or its descendants#{notText} to show."
      element.style.display in ['block', 'inline-block', 'static', 'fixed']

window.waitsForPromise = (args...) ->
  label = null
  if args.length > 1
    {shouldReject, timeout, label} = args[0]
  else
    shouldReject = false
  label ?= 'promise to be resolved or rejected'
  fn = _.last(args)

  window.waitsFor label, timeout, (moveOn) ->
    promise = fn()
    if shouldReject
      promise.catch.call(promise, moveOn)
      promise.then ->
        jasmine.getEnv().currentSpec.fail("Expected promise to be rejected, but it was resolved")
        moveOn()
    else
      promise.then(moveOn)
      promise.catch.call promise, (error) ->
        jasmine.getEnv().currentSpec.fail("Expected promise to be resolved, but it was rejected with: #{error?.message} #{jasmine.pp(error)}")
        moveOn()

window.resetTimeouts = ->
  window.now = 0
  window.timeoutCount = 0
  window.intervalCount = 0
  window.timeouts = []
  window.intervalTimeouts = {}

window.fakeSetTimeout = (callback, ms) ->
  id = ++window.timeoutCount
  window.timeouts.push([id, window.now + ms, callback])
  id

window.fakeClearTimeout = (idToClear) ->
  window.timeouts = window.timeouts.filter ([id]) -> id isnt idToClear

window.fakeSetInterval = (callback, ms) ->
  id = ++window.intervalCount
  action = ->
    callback()
    window.intervalTimeouts[id] = window.fakeSetTimeout(action, ms)
  window.intervalTimeouts[id] = window.fakeSetTimeout(action, ms)
  id

window.fakeClearInterval = (idToClear) ->
  window.fakeClearTimeout(@intervalTimeouts[idToClear])

window.advanceClock = (delta=1) ->
  window.now += delta
  callbacks = []

  window.timeouts = window.timeouts.filter ([id, strikeTime, callback]) ->
    if strikeTime <= window.now
      callbacks.push(callback)
      false
    else
      true

  callback() for callback in callbacks

exports.mockLocalStorage = ->
  items = {}
  spyOn(global.localStorage, 'setItem').andCallFake (key, item) -> items[key] = item.toString(); undefined
  spyOn(global.localStorage, 'getItem').andCallFake (key) -> items[key] ? null
  spyOn(global.localStorage, 'removeItem').andCallFake (key) -> delete items[key]; undefined