mirror of
https://github.com/overleaf/overleaf.git
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130 lines
3.6 KiB
CoffeeScript
130 lines
3.6 KiB
CoffeeScript
define [], () ->
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class ConnectionManager
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constructor: (@ide, @$scope) ->
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if !io?
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console.error "Socket.io javascript not loaded. Please check that the real-time service is running and accessible."
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@ide.socket =
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on: () ->
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$scope.$apply () =>
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@$scope.state.error = "Could not connect to websocket server :("
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return
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@connected = false
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@$scope.connection =
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reconnecting: false
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# If we need to force everyone to reload the editor
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forced_disconnect: false
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@$scope.tryReconnectNow = () =>
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@tryReconnect()
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@$scope.$on "editor:change", () =>
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@lastUpdated = new Date()
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@ide.socket = io.connect null,
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reconnect: false
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"force new connection": true
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@ide.socket.on "connect", () =>
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@connected = true
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@ide.pushEvent("connected")
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@$scope.$apply () =>
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@$scope.connection.reconnecting = false
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if @$scope.state.loading
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@$scope.state.load_progress = 70
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setTimeout(() =>
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@joinProject()
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, 100)
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@ide.socket.on 'disconnect', () =>
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@connected = false
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@ide.pushEvent("disconnected")
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@$scope.$apply () =>
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@$scope.connection.reconnecting = false
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setTimeout(=>
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ga('send', 'event', 'editor-interaction', 'disconnect')
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, 2000)
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if !$scope.connection.forced_disconnect
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@startAutoReconnectCountdown()
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@ide.socket.on 'forceDisconnect', (message) =>
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@$scope.$apply () =>
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@$scope.permissions.write = false
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@$scope.connection.forced_disconnect = true
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@ide.socket.disconnect()
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@ide.showGenericMessageModal("Please Refresh", """
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We're performing maintenance on ShareLaTeX and you need to refresh the editor.
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Sorry for any inconvenience.
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The editor will refresh in automatically in 10 seconds.
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""")
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setTimeout () ->
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location.reload()
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, 10 * 1000
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joinProject: () ->
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@ide.socket.emit 'joinProject', {
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project_id: @ide.project_id
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}, (err, project, permissionsLevel, protocolVersion) =>
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if @$scope.protocolVersion? and @$scope.protocolVersion != protocolVersion
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location.reload(true)
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@$scope.$apply () =>
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@$scope.protocolVersion = protocolVersion
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@$scope.project = project
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@$scope.permissionsLevel = permissionsLevel
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@$scope.state.load_progress = 100
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@$scope.state.loading = false
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@$scope.$broadcast "project:joined"
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reconnectImmediately: () ->
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@disconnect()
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@tryReconnect()
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disconnect: () ->
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@ide.socket.disconnect()
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startAutoReconnectCountdown: () ->
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twoMinutes = 2 * 60 * 1000
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if @lastUpdated? and new Date() - @lastUpdated > twoMinutes
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# between 1 minute and 3 minutes
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countdown = 60 + Math.floor(Math.random() * 120)
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else
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countdown = 3 + Math.floor(Math.random() * 7)
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@$scope.$apply () =>
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@$scope.connection.reconnecting = false
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@$scope.connection.reconnection_countdown = countdown
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setTimeout(=>
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if !@connected
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@timeoutId = setTimeout (=> @decreaseCountdown()), 1000
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, 200)
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cancelReconnect: () ->
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clearTimeout @timeoutId if @timeoutId?
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decreaseCountdown: () ->
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return if !@$scope.connection.reconnection_countdown?
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@$scope.$apply () =>
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@$scope.connection.reconnection_countdown--
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if @$scope.connection.reconnection_countdown <= 0
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@$scope.$apply () =>
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@tryReconnect()
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else
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@timeoutId = setTimeout (=> @decreaseCountdown()), 1000
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tryReconnect: () ->
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@cancelReconnect()
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delete @$scope.connection.reconnection_countdown
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return if @connected
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@$scope.connection.reconnecting = true
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@ide.socket.socket.reconnect()
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setTimeout (=> @startAutoReconnectCountdown() if !@connected), 2000
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