overleaf/services/web/public/coffee/ide/connection/ConnectionManager.coffee
2014-07-24 16:39:32 +01:00

122 lines
3.3 KiB
CoffeeScript

define [], () ->
class ConnectionManager
constructor: (@ide, @$scope) ->
@connected = false
@$scope.connection =
reconnecting: false
# If we need to force everyone to reload the editor
forced_disconnect: false
@$scope.tryReconnectNow = () =>
@tryReconnect()
@$scope.$on "editor:change", () =>
@lastUpdated = new Date()
@ide.socket = io.connect null,
reconnect: false
"force new connection": true
@ide.socket.on "connect", () =>
@connected = true
@ide.pushEvent("connected")
@$scope.$apply () =>
@$scope.connection.reconnecting = false
if @$scope.state.loading
@$scope.state.load_progress = 70
setTimeout(() =>
@joinProject()
, 100)
@ide.socket.on 'disconnect', () =>
@connected = false
@ide.pushEvent("disconnected")
@$scope.$apply () =>
@$scope.connection.reconnecting = false
setTimeout(=>
ga('send', 'event', 'editor-interaction', 'disconnect')
, 2000)
if !$scope.connection.forced_disconnect
@startAutoReconnectCountdown()
@ide.socket.on 'forceDisconnect', (message) =>
@$scope.$apply () =>
@$scope.permissions.write = false
@$scope.connection.forced_disconnect = true
@ide.socket.disconnect()
@ide.showGenericMessageModal("Please Refresh", """
We're performing maintenance on ShareLaTeX and you need to refresh the editor.
Sorry for any inconvenience.
The editor will refresh in automatically in 10 seconds.
""")
setTimeout () ->
location.reload()
, 10 * 1000
joinProject: () ->
@ide.socket.emit 'joinProject', {
project_id: @ide.project_id
}, (err, project, permissionsLevel, protocolVersion) =>
if @$scope.protocolVersion? and @$scope.protocolVersion != protocolVersion
location.reload(true)
@$scope.$apply () =>
@$scope.protocolVersion = protocolVersion
@$scope.project = project
@$scope.permissionsLevel = permissionsLevel
@$scope.state.load_progress = 100
@$scope.state.loading = false
@$scope.$broadcast "project:joined"
reconnectImmediately: () ->
@disconnect()
@tryReconnect()
disconnect: () ->
@ide.socket.disconnect()
startAutoReconnectCountdown: () ->
twoMinutes = 2 * 60 * 1000
if @lastUpdated? and new Date() - @lastUpdated > twoMinutes
# between 1 minute and 3 minutes
countdown = 60 + Math.floor(Math.random() * 120)
else
countdown = 3 + Math.floor(Math.random() * 7)
@$scope.$apply () =>
@$scope.connection.reconnecting = false
@$scope.connection.reconnection_countdown = countdown
setTimeout(=>
if !@connected
@timeoutId = setTimeout (=> @decreaseCountdown()), 1000
, 200)
cancelReconnect: () ->
clearTimeout @timeoutId if @timeoutId?
decreaseCountdown: () ->
return if !@$scope.connection.reconnection_countdown?
@$scope.$apply () =>
@$scope.connection.reconnection_countdown--
if @$scope.connection.reconnection_countdown <= 0
@$scope.$apply () =>
@tryReconnect()
else
@timeoutId = setTimeout (=> @decreaseCountdown()), 1000
tryReconnect: () ->
@cancelReconnect()
delete @$scope.connection.reconnection_countdown
return if @connected
@$scope.connection.reconnecting = true
@ide.socket.socket.reconnect()
setTimeout (=> @startAutoReconnectCountdown() if !@connected), 2000