const assert = require('assert')

const remote = require('electron').remote
const ipcRenderer = require('electron').ipcRenderer

const Menu = remote.require('electron').Menu
const MenuItem = remote.require('electron').MenuItem

describe('menu module', function () {
  describe('Menu.buildFromTemplate', function () {
    it('should be able to attach extra fields', function () {
      var menu = Menu.buildFromTemplate([
        {
          label: 'text',
          extra: 'field'
        }
      ])
      assert.equal(menu.items[0].extra, 'field')
    })

    it('does not modify the specified template', function () {
      var template = ipcRenderer.sendSync('eval', "var template = [{label: 'text', submenu: [{label: 'sub'}]}];\nrequire('electron').Menu.buildFromTemplate(template);\ntemplate;")
      assert.deepStrictEqual(template, [
        {
          label: 'text',
          submenu: [
            {
              label: 'sub'
            }
          ]
        }
      ])
    })

    it('does not throw exceptions for undefined/null values', function () {
      assert.doesNotThrow(function () {
        Menu.buildFromTemplate([
          {
            label: 'text',
            accelerator: undefined
          },
          {
            label: 'text again',
            accelerator: null
          }
        ])
      })
    })

    describe('Menu.buildFromTemplate should reorder based on item position specifiers', function () {
      it('should position before existing item', function () {
        var menu = Menu.buildFromTemplate([
          {
            label: '2',
            id: '2'
          }, {
            label: '3',
            id: '3'
          }, {
            label: '1',
            id: '1',
            position: 'before=2'
          }
        ])
        assert.equal(menu.items[0].label, '1')
        assert.equal(menu.items[1].label, '2')
        assert.equal(menu.items[2].label, '3')
      })

      it('should position after existing item', function () {
        var menu = Menu.buildFromTemplate([
          {
            label: '1',
            id: '1'
          }, {
            label: '3',
            id: '3'
          }, {
            label: '2',
            id: '2',
            position: 'after=1'
          }
        ])
        assert.equal(menu.items[0].label, '1')
        assert.equal(menu.items[1].label, '2')
        assert.equal(menu.items[2].label, '3')
      })

      it('should position at endof existing separator groups', function () {
        var menu = Menu.buildFromTemplate([
          {
            type: 'separator',
            id: 'numbers'
          }, {
            type: 'separator',
            id: 'letters'
          }, {
            label: 'a',
            id: 'a',
            position: 'endof=letters'
          }, {
            label: '1',
            id: '1',
            position: 'endof=numbers'
          }, {
            label: 'b',
            id: 'b',
            position: 'endof=letters'
          }, {
            label: '2',
            id: '2',
            position: 'endof=numbers'
          }, {
            label: 'c',
            id: 'c',
            position: 'endof=letters'
          }, {
            label: '3',
            id: '3',
            position: 'endof=numbers'
          }
        ])
        assert.equal(menu.items[0].id, 'numbers')
        assert.equal(menu.items[1].label, '1')
        assert.equal(menu.items[2].label, '2')
        assert.equal(menu.items[3].label, '3')
        assert.equal(menu.items[4].id, 'letters')
        assert.equal(menu.items[5].label, 'a')
        assert.equal(menu.items[6].label, 'b')
        assert.equal(menu.items[7].label, 'c')
      })

      it('should create separator group if endof does not reference existing separator group', function () {
        var menu = Menu.buildFromTemplate([
          {
            label: 'a',
            id: 'a',
            position: 'endof=letters'
          }, {
            label: '1',
            id: '1',
            position: 'endof=numbers'
          }, {
            label: 'b',
            id: 'b',
            position: 'endof=letters'
          }, {
            label: '2',
            id: '2',
            position: 'endof=numbers'
          }, {
            label: 'c',
            id: 'c',
            position: 'endof=letters'
          }, {
            label: '3',
            id: '3',
            position: 'endof=numbers'
          }
        ])
        assert.equal(menu.items[0].id, 'letters')
        assert.equal(menu.items[1].label, 'a')
        assert.equal(menu.items[2].label, 'b')
        assert.equal(menu.items[3].label, 'c')
        assert.equal(menu.items[4].id, 'numbers')
        assert.equal(menu.items[5].label, '1')
        assert.equal(menu.items[6].label, '2')
        assert.equal(menu.items[7].label, '3')
      })

      it('should continue inserting items at next index when no specifier is present', function () {
        var menu = Menu.buildFromTemplate([
          {
            label: '4',
            id: '4'
          }, {
            label: '5',
            id: '5'
          }, {
            label: '1',
            id: '1',
            position: 'before=4'
          }, {
            label: '2',
            id: '2'
          }, {
            label: '3',
            id: '3'
          }
        ])
        assert.equal(menu.items[0].label, '1')
        assert.equal(menu.items[1].label, '2')
        assert.equal(menu.items[2].label, '3')
        assert.equal(menu.items[3].label, '4')
        assert.equal(menu.items[4].label, '5')
      })
    })
  })

  describe('Menu.insert', function () {
    it('should store item in @items by its index', function () {
      var menu = Menu.buildFromTemplate([
        {
          label: '1'
        }, {
          label: '2'
        }, {
          label: '3'
        }
      ])
      var item = new MenuItem({
        label: 'inserted'
      })
      menu.insert(1, item)
      assert.equal(menu.items[0].label, '1')
      assert.equal(menu.items[1].label, 'inserted')
      assert.equal(menu.items[2].label, '2')
      assert.equal(menu.items[3].label, '3')
    })
  })

  describe('MenuItem.click', function () {
    it('should be called with the item object passed', function (done) {
      var menu = Menu.buildFromTemplate([
        {
          label: 'text',
          click: function (item) {
            assert.equal(item.constructor.name, 'MenuItem')
            assert.equal(item.label, 'text')
            done()
          }
        }
      ])
      menu.delegate.executeCommand({}, menu.items[0].commandId)
    })
  })

  describe('MenuItem with checked property', function () {
    it('clicking an checkbox item should flip the checked property', function () {
      var menu = Menu.buildFromTemplate([
        {
          label: 'text',
          type: 'checkbox'
        }
      ])
      assert.equal(menu.items[0].checked, false)
      menu.delegate.executeCommand({}, menu.items[0].commandId)
      assert.equal(menu.items[0].checked, true)
    })

    it('clicking an radio item should always make checked property true', function () {
      var menu = Menu.buildFromTemplate([
        {
          label: 'text',
          type: 'radio'
        }
      ])
      menu.delegate.executeCommand({}, menu.items[0].commandId)
      assert.equal(menu.items[0].checked, true)
      menu.delegate.executeCommand({}, menu.items[0].commandId)
      assert.equal(menu.items[0].checked, true)
    })

    it('at least have one item checked in each group', function () {
      var i, j, k, menu, template
      template = []
      for (i = j = 0; j <= 10; i = ++j) {
        template.push({
          label: '' + i,
          type: 'radio'
        })
      }
      template.push({
        type: 'separator'
      })
      for (i = k = 12; k <= 20; i = ++k) {
        template.push({
          label: '' + i,
          type: 'radio'
        })
      }
      menu = Menu.buildFromTemplate(template)
      menu.delegate.menuWillShow()
      assert.equal(menu.items[0].checked, true)
      assert.equal(menu.items[12].checked, true)
    })

    it('should assign groupId automatically', function () {
      var groupId, i, j, k, l, m, menu, template
      template = []
      for (i = j = 0; j <= 10; i = ++j) {
        template.push({
          label: '' + i,
          type: 'radio'
        })
      }
      template.push({
        type: 'separator'
      })
      for (i = k = 12; k <= 20; i = ++k) {
        template.push({
          label: '' + i,
          type: 'radio'
        })
      }
      menu = Menu.buildFromTemplate(template)
      groupId = menu.items[0].groupId
      for (i = l = 0; l <= 10; i = ++l) {
        assert.equal(menu.items[i].groupId, groupId)
      }
      for (i = m = 12; m <= 20; i = ++m) {
        assert.equal(menu.items[i].groupId, groupId + 1)
      }
    })

    it("setting 'checked' should flip other items' 'checked' property", function () {
      var i, j, k, l, m, menu, n, o, p, q, template
      template = []
      for (i = j = 0; j <= 10; i = ++j) {
        template.push({
          label: '' + i,
          type: 'radio'
        })
      }
      template.push({
        type: 'separator'
      })
      for (i = k = 12; k <= 20; i = ++k) {
        template.push({
          label: '' + i,
          type: 'radio'
        })
      }
      menu = Menu.buildFromTemplate(template)
      for (i = l = 0; l <= 10; i = ++l) {
        assert.equal(menu.items[i].checked, false)
      }
      menu.items[0].checked = true
      assert.equal(menu.items[0].checked, true)
      for (i = m = 1; m <= 10; i = ++m) {
        assert.equal(menu.items[i].checked, false)
      }
      menu.items[10].checked = true
      assert.equal(menu.items[10].checked, true)
      for (i = n = 0; n <= 9; i = ++n) {
        assert.equal(menu.items[i].checked, false)
      }
      for (i = o = 12; o <= 20; i = ++o) {
        assert.equal(menu.items[i].checked, false)
      }
      menu.items[12].checked = true
      assert.equal(menu.items[10].checked, true)
      for (i = p = 0; p <= 9; i = ++p) {
        assert.equal(menu.items[i].checked, false)
      }
      assert.equal(menu.items[12].checked, true)
      for (i = q = 13; q <= 20; i = ++q) {
        assert.equal(menu.items[i].checked, false)
      }
    })
  })

  describe('MenuItem with invalid type', function () {
    it('throws an exception', function () {
      assert.throws(function () {
        var menu = Menu.buildFromTemplate([
          {
            label: 'text',
            type: 'not-a-type'
          }
        ])
      }, /Unknown menu item type: not-a-type/)
    })
  })
})