git ssb

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var h = require('./lib/h')
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var Value = require('@mmckegg/mutant/value')
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var computed = require('@mmckegg/mutant/computed')
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var when = require('@mmckegg/mutant/when')
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var send = require('@mmckegg/mutant/send')
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var electron = require('electron')
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var Player = require('./widgets/player')
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var onceTrue = require('./lib/once-true')
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var watch = require('@mmckegg/mutant/watch')
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var MutantMap = require('@mmckegg/mutant/map')
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var LatestUpdate = require('./lib/latest-update')
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var sanitizeFileName = require('sanitize-filename')
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var views = {
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  discoveryFeed: require('./views/discovery-feed'),
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  followingFeed: require('./views/following-feed'),
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  profile: require('./views/profile'),
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  post: require('./views/audio-post')
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}
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module.exports = function (client, config) {
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  var api = require('./api')(client, config)
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  var background = require('./models/background-remote')(config)
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  var currentView = Value(['discoveryFeed'])
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  var backHistory = []
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  var forwardHistory = []
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  var canGoForward = Value(false)
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  var canGoBack = Value(false)
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  var latestUpdate = LatestUpdate()
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  window.latestUpdate = latestUpdate
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  var actions = {
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    openEditProfileWindow,
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    openJoinPubWindow,
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    editPost,
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    saveFile (item, cb) {
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      electron.remote.dialog.showSaveDialog(electron.remote.getCurrentWindow(), {
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        title: 'Export Audio File',
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        defaultPath: sanitizeFileName(`${item.author.displayName()} - ${item.title()}.mp3`),
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        filters: [
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          {name: 'MP3', extensions: ['mp3']}
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        ]
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      }, function (path) {
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        if (path) {
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          background.exportFile(item.audioSrc(), path, cb)
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        } else {
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          cb && cb(false)
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        }
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      })
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    },
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    repost (item) {
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    },
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    viewProfile (id) {
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      actions.setView('profile', id)
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    },
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    viewPost (id) {
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      actions.setView('post', id)
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    },
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    setView: function (view, ...args) {
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      var newView = [view, ...args]
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      if (!isSame(newView, currentView())) {
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        canGoForward.set(false)
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        canGoBack.set(true)
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        forwardHistory.length = 0
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        backHistory.push([currentView(), mainElement.scrollTop])
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        currentView.set(newView)
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        mainElement.scrollTop = 0
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      }
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    }
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  }
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  background.stats(x => console.log(x))
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  var profile = api.getOwnProfile()
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  var discoveryFeed = api.getDiscoveryFeed()
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  var suggestedProfiles = api.getSuggestedProfiles(15)
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  var following = MutantMap(api.rankProfileIds(profile.following), id => api.getProfile(id))
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  var followingFeed = api.getFollowingFeed()
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  // hold these open
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  watch(suggestedProfiles)
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  watch(discoveryFeed)
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  watch(followingFeed)
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  var context = { config, api, background, actions, discoveryFeed, followingFeed, suggestedProfiles, following, profile }
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  var player = context.player = Player(context)
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  var rootElement = computed(currentView, (data) => {
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    if (Array.isArray(data) && views[data[0]]) {
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      return views[data[0]](context, ...data.slice(1))
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    }
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  })
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  var mainElement = h('div.main', [
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    rootElement
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  ])
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  onceTrue(api.profilesLoaded, (value) => {
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    // make sure we're connected to the pub that invited us
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    if (!profile.displayName()) {
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      // prompt use to set up profile the first time they open app
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      openEditProfileWindow()
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    }
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  })
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  electron.ipcRenderer.on('playPause', function () {
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    player.togglePlay()
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  })
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  electron.ipcRenderer.on('nextTrack', function () {
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    player.playNext()
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  })
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  electron.ipcRenderer.on('previousTrack', function () {
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    player.playPrevious()
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  })
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  return h('MainWindow', {
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    classList: [ '-' + process.platform ]
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  }, [
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    h('div.top', [
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      h('span.history', [
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        h('a', {
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          'ev-click': goBack,
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          classList: [ when(canGoBack, '-active') ]
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        }, '<'),
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        h('a', {
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          'ev-click': goForward,
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          classList: [ when(canGoForward, '-active') ]
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        }, '>')
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      ]),
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      h('span.nav', [
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        h('a', {
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          'ev-click': send(actions.setView, 'discoveryFeed'),
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          classList: [ computed(currentView, (x) => x[0] === 'discoveryFeed' ? '-selected' : null) ]
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        }, 'Discovery'),
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        h('a', {
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          'ev-click': send(actions.setView, 'followingFeed'),
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          classList: [ computed(currentView, (x) => x[0] === 'followingFeed' ? '-selected' : null) ]
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        }, 'Following')
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      ]),
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      h('span.appTitle', ['Ferment']),
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      h('span', [
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        h('a', {
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          'ev-click': send(actions.viewProfile, api.id),
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          title: 'Your Profile',
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          classList: [ computed(currentView, (x) => x[0] === 'profile' && x[1] === api.id ? '-selected' : null) ]
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        }, '😀'),
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        h('a -profile', {href: '#', 'ev-click': openEditProfileWindow}, ['Edit Profile']),
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        h('a -add', {href: '#', 'ev-click': openAddWindow}, ['+ Add Audio'])
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      ])
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    ]),
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    when(latestUpdate,
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      h('div.info', [
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        h('a.message -update', { href: 'https://github.com/mmckegg/ferment/releases' }, [
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          h('strong', ['🎉 Ferment ', latestUpdate, ' has been released.']), ' Click here for more info!'
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        ])
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      ])
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    ),
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    mainElement,
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    h('div.bottom', [
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      player.audioElement
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    ])
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  ])
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  // scoped
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  function goBack () {
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    if (backHistory.length) {
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      canGoForward.set(true)
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      forwardHistory.push([currentView(), mainElement.scrollTop])
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      var item = backHistory.pop()
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      currentView.set(item[0])
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      setTimeout(() => {
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        mainElement.scrollTop = item[1]
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      }, 50)
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      canGoBack.set(backHistory.length > 0)
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    }
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  }
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  function goForward () {
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    if (forwardHistory.length) {
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      backHistory.push([currentView(), mainElement.scrollTop])
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      var item = forwardHistory.pop()
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      currentView.set(item[0])
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      setTimeout(() => {
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        mainElement.scrollTop = item[1]
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      }, 50)
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      canGoForward.set(forwardHistory.length > 0)
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      canGoBack.set(true)
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    }
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  }
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  function openEditProfileWindow () {
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    electron.ipcRenderer.send('open-edit-profile-window', {
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      profile: profile.byMe(),
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      id: api.id
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    })
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  }
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  function openJoinPubWindow () {
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    electron.ipcRenderer.send('open-join-pub-window')
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  }
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}
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function editPost (opts) {
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  if (opts.id && opts.item.type === 'ferment/audio') {
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    electron.ipcRenderer.send('open-add-window', opts)
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  }
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}
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function openAddWindow (opts) {
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  electron.ipcRenderer.send('open-add-window')
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}
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function isSame (a, b) {
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  if (Array.isArray(a) && Array.isArray(b) && a.length === b.length) {
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    for (var i = 0; i < a.length; i++) {
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      if (a[i] !== b[i]) {
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        return false
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      }
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    }
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    return true
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  } else if (a === b) {
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    return true
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  }
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}
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