/** @babel */

import {it, fit, ffit, fffit, beforeEach, afterEach} from './async-spec-helpers'
import {Emitter, Disposable, CompositeDisposable} from 'event-kit'

const ReopenProjectMenuManager = require('../src/reopen-project-menu-manager')

numberRange = (low, high) => {
  const size = high - low
  const result = new Array(size)
  for (var i = 0; i < size; i++)
    result[i] = low + i
  return result
}

describe("ReopenProjectMenuManager", () => {
  let menuManager, commandRegistry, config, historyManager, reopenProjects
  let commandDisposable, configDisposable, historyDisposable

  beforeEach(() => {
    menuManager = jasmine.createSpyObj('MenuManager', ['add'])
    menuManager.add.andReturn(new Disposable())

    commandRegistry = jasmine.createSpyObj('CommandRegistry', ['add'])
    commandDisposable = jasmine.createSpyObj('Disposable', ['dispose'])
    commandRegistry.add.andReturn(commandDisposable)

    config = jasmine.createSpyObj('Config', ['onDidChange', 'get'])
    config.get.andReturn(10)
    configDisposable = jasmine.createSpyObj('Disposable', ['dispose'])
    config.didChangeListener = { }
    config.onDidChange.andCallFake((key, fn) => {
      config.didChangeListener[key] = fn
      return configDisposable
    })

    historyManager = jasmine.createSpyObj('historyManager', ['getProjects','onDidChangeProjects'])
    historyManager.getProjects.andReturn([])
    historyDisposable = jasmine.createSpyObj('Disposable', ['dispose'])
    historyManager.onDidChangeProjects.andCallFake((fn) => {
      historyManager.changeProjectsListener = fn
      return historyDisposable
    })

    openFunction = jasmine.createSpy()
    reopenProjects = new ReopenProjectMenuManager({menu:menuManager, commands: commandRegistry, history: historyManager, config, open:openFunction})
  })

  describe("constructor", () => {
    it("registers the 'reopen-project' command function", () => {
      expect(commandRegistry.add).toHaveBeenCalled()
      const cmdCall = commandRegistry.add.calls[0]
      expect(cmdCall.args.length).toBe(2)
      expect(cmdCall.args[0]).toBe('atom-workspace')
      expect(typeof cmdCall.args[1]['application:reopen-project']).toBe('function')
    })
  })

  describe("dispose", () => {
    it("disposes of the history, command and config disposables", () => {
      reopenProjects.dispose()
      expect(historyDisposable.dispose).toHaveBeenCalled()
      expect(configDisposable.dispose).toHaveBeenCalled()
      expect(commandDisposable.dispose).toHaveBeenCalled()
    })

    it("disposes of the menu disposable once used", () => {
      const menuDisposable = jasmine.createSpyObj('Disposable', ['dispose'])
      menuManager.add.andReturn(menuDisposable)
      reopenProjects.update()
      expect(menuDisposable.dispose).not.toHaveBeenCalled()
      reopenProjects.dispose()
      expect(menuDisposable.dispose).toHaveBeenCalled()
    })
  })

  describe("the command", () => {
    it("calls open with the paths of the project specified by the detail index", () => {
      historyManager.getProjects.andReturn([ { paths: ['/a'] }, { paths: ['/b', 'c:\\'] }])
      reopenProjects.update()

      reopenProjectCommand = commandRegistry.add.calls[0].args[1]['application:reopen-project']
      reopenProjectCommand({ detail: { index: 1 } })

      expect(openFunction).toHaveBeenCalled()
      expect(openFunction.calls[0].args[0]).toEqual(['/b', 'c:\\'])
    })

    it("does not call open when no command detail is supplied", () => {
      reopenProjectCommand = commandRegistry.add.calls[0].args[1]['application:reopen-project']
      reopenProjectCommand({})

      expect(openFunction).not.toHaveBeenCalled()
    })

    it("does not call open when no command detail index is supplied", () => {
      reopenProjectCommand = commandRegistry.add.calls[0].args[1]['application:reopen-project']
      reopenProjectCommand({ detail: { anything: 'here' } })

      expect(openFunction).not.toHaveBeenCalled()
    })
  })

  describe("update", () => {
    it("adds menu items to MenuManager based on projects from HistoryManager", () => {
      historyManager.getProjects.andReturn([ { paths: ['/a'] }, { paths: ['/b', 'c:\\'] }])
      reopenProjects.update()
      expect(historyManager.getProjects).toHaveBeenCalled()
      expect(menuManager.add).toHaveBeenCalled()
      const menuArg = menuManager.add.calls[0].args[0]
      expect(menuArg.length).toBe(1)
      expect(menuArg[0].label).toBe('File')
      expect(menuArg[0].submenu.length).toBe(1)
      const projectsMenu = menuArg[0].submenu[0]
      expect(projectsMenu.label).toBe('Reopen Project')
      expect(projectsMenu.submenu.length).toBe(2)

      const first = projectsMenu.submenu[0]
      expect(first.label).toBe('/a')
      expect(first.command).toBe('application:reopen-project')
      expect(first.commandDetail).toEqual({ index: 0 })

      const second = projectsMenu.submenu[1]
      expect(second.label).toBe('b, c:\\')
      expect(second.command).toBe('application:reopen-project')
      expect(second.commandDetail).toEqual({ index: 1 })
    })

    it("adds only the number of menu items specified in the 'core.reopenProjectMenuCount' config", () => {
      historyManager.getProjects.andReturn(numberRange(1, 100).map(i => ({ paths: [ '/test/' + i ] })))
      reopenProjects.update()
      expect(menuManager.add).toHaveBeenCalled()
      const menu = menuManager.add.calls[0].args[0][0]
      expect(menu.label).toBe('File')
      expect(menu.submenu.length).toBe(1)
      expect(menu.submenu[0].label).toBe('Reopen Project')
      expect(menu.submenu[0].submenu.length).toBe(10)
    })

    it("disposes the previously menu built", () => {
      const menuDisposable = jasmine.createSpyObj('Disposable', ['dispose'])
      menuManager.add.andReturn(menuDisposable)
      reopenProjects.update()
      expect(menuDisposable.dispose).not.toHaveBeenCalled()
      reopenProjects.update()
      expect(menuDisposable.dispose).toHaveBeenCalled()
    })

    it("is called when the Config changes for 'core.reopenProjectMenuCount'", () => {
      historyManager.getProjects.andReturn(numberRange(1, 100).map(i => ({ paths: [ '/test/' + i ] })))
      reopenProjects.update()
      config.get.andReturn(25)
      config.didChangeListener['core.reopenProjectMenuCount']({oldValue:10, newValue: 25})

      const finalArgs = menuManager.add.calls[1].args[0]
      const projectsMenu = finalArgs[0].submenu[0].submenu

      expect(projectsMenu.length).toBe(25)
    })

    it("is called when the HistoryManager's projects change", () => {
      reopenProjects.update()
      historyManager.getProjects.andReturn([ { paths: ['/a'] }, { paths: ['/b', 'c:\\'] } ])
      historyManager.changeProjectsListener()
      expect(menuManager.add.calls.length).toBe(2)

      const finalArgs = menuManager.add.calls[1].args[0]
      const projectsMenu = finalArgs[0].submenu[0]

      const first = projectsMenu.submenu[0]
      expect(first.label).toBe('/a')
      expect(first.command).toBe('application:reopen-project')
      expect(first.commandDetail).toEqual({ index: 0 })

      const second = projectsMenu.submenu[1]
      expect(second.label).toBe('b, c:\\')
      expect(second.command).toBe('application:reopen-project')
      expect(second.commandDetail).toEqual({ index: 1 })
    })
  })

  describe("updateProjects", () => {
    it("creates correct menu items commands for recent projects", () => {
      const projects = [
        { paths: [ '/users/neila' ] },
        { paths: [ '/users/buzza', 'users/michaelc' ] }
      ]

      const menu = ReopenProjectMenuManager.createProjectsMenu(projects)
      expect(menu.label).toBe('File')
      expect(menu.submenu.length).toBe(1)

      const recentMenu = menu.submenu[0]
      expect(recentMenu.label).toBe('Reopen Project')
      expect(recentMenu.submenu.length).toBe(2)

      const first = recentMenu.submenu[0]
      expect(first.label).toBe('/users/neila')
      expect(first.command).toBe('application:reopen-project')
      expect(first.commandDetail).toEqual({index: 0})

      const second = recentMenu.submenu[1]
      expect(second.label).toBe('buzza, michaelc')
      expect(second.command).toBe('application:reopen-project')
      expect(second.commandDetail).toEqual({index: 1})
    })
  })

  describe("createLabel", () => {
    it("returns the Unix path unchanged if there is only one", () => {
      const label = ReopenProjectMenuManager.createLabel({ paths: ['/a/b/c/d/e/f'] })
      expect(label).toBe('/a/b/c/d/e/f')
    })

    it("returns the Windows path unchanged if there is only one", () => {
      const label = ReopenProjectMenuManager.createLabel({ paths: ['c:\\missions\\apollo11'] })
      expect(label).toBe('c:\\missions\\apollo11')
    })

    it("returns the URL unchanged if there is only one", () => {
      const label = ReopenProjectMenuManager.createLabel({ paths: ['https://launch.pad/apollo/11'] })
      expect(label).toBe('https://launch.pad/apollo/11')
    })

    it("returns a comma-separated list of base names if there are multiple", () => {
      const project = { paths: [ '/var/one', '/usr/bin/two', '/etc/mission/control/three' ] }
      const label = ReopenProjectMenuManager.createLabel(project)
      expect(label).toBe('one, two, three')
    })

    describe("betterBaseName", () => {
      it("returns the standard base name for an absolute Unix path", () => {
        const name = ReopenProjectMenuManager.betterBaseName('/one/to/three')
        expect(name).toBe('three')
      })

      it("returns the standard base name for a relative Windows path", () => {
        if (process.platform === 'win32') {
          const name = ReopenProjectMenuManager.betterBaseName('.\\one\\two')
          expect(name).toBe('two')
        }
      })

      it("returns the standard base name for an absolute Windows path", () => {
        if (process.platform === 'win32') {
          const name = ReopenProjectMenuManager.betterBaseName('c:\\missions\\apollo\\11')
          expect(name).toBe('11')
        }
      })

      it("returns the drive root for a Windows drive name", () => {
        const name = ReopenProjectMenuManager.betterBaseName('d:')
        expect(name).toBe('d:\\')
      })

      it("returns the drive root for a Windows drive root", () => {
        const name = ReopenProjectMenuManager.betterBaseName('e:\\')
        expect(name).toBe('e:\\')
      })

      it("returns the final path for a URI", () => {
        const name = ReopenProjectMenuManager.betterBaseName('https://something/else')
        expect(name).toBe('else')
      })
    })
  })
})