todo-webclient/client/todowebsocket.ls

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# todod module
# 1. create a socket
# 2. the socket parses and serialize data
# 3. the socket handles network errors
module.exports = {
create-socket: (socket-url) ->
self = {}
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request-types = {
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"list-lists": 0
"get-list": 1
"add-list": 2
"edit-list": 3
"remove-list": 4
"get-tasks": 5
"get-task": 6
"add-task": 7
"remove-task": 8
"edit-task": 9
"subscribe": 10
"unsubscribe": 11
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}
response-types = {
"ok": 0
"error": 1
"lists-list": 2
"new-list": 3
"list-removed": 4
"list-updated": 5
"tasks": 6
"task": 7
"task-created": 8
"task-removed": 9
"task-updated": 10
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"subscribed": 11
"unsubscribed": 12
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}
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# users can record functions to run on events
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self.user-on-socket-error = []
self.user-on-socket-close = []
self.callbacks = {}
for key, value of response-types
self.callbacks[value] = []
self.add-event-listener = (type, callback) ->
# console.log "add event listener", type, callback, response-types[type]
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type = response-types[type]
self.callbacks[type] ++= [callback]
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self.open-socket = ->
console.log "Opening socket to #{socket-url}"
self.socket := new WebSocket socket-url
self.socket.onerror = (event) ->
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for f in self.user-on-socket-error
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f event
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self.socket.close!
self.socket.onclose = (event) ->
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for f in self.user-on-socket-close
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f event
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self.socket.onmessage = (event) ->
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message = JSON.parse(event.data)
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parsed-message = JSON.parse(message.payload)
console.log "todod message #{message.mtype} received: ", parsed-message
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for f in self.callbacks[message.mtype]
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f parsed-message
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self.reopen = ->
self.socket.close!
self.open-socket!
self.open-socket!
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self.send = (type, opts) ->
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console.log "sending message #{type} to todod: ", opts
# console.log JSON.stringify { mtype: type, payload: opts }
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self.socket.send JSON.stringify { mtype: type, payload: opts }
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self.list-lists = ->
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self.send request-types[\list-lists], JSON.stringify {
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token: self.token
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id: "list-lists"
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}
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self.get-list = (list-id) ->
self.send request-types[\get-list], JSON.stringify {
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token: self.token
list: list-id
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id: "get-list"
}
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self.get-tasks = (list-id) ->
self.send request-types[\get-tasks], JSON.stringify {
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token: self.token
list: list-id
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id: "get-tasks"
}
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self.get-task = (task-id) ->
self.send request-types[\get-task], JSON.stringify {
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token: self.token
task: task-id
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id: "get-task"
}
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self.remove-list = (list-id) ->
self.send request-types[\remove-list], JSON.stringify {
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token: self.token
list: list-id
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id: "remove-list"
}
# TODO: extra properties
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self.add-list = (title, opts) ->
payload = {
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token: self.token
title: title
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id: "add-list"
}
for key, value of opts
payload[key] = value
self.send request-types[\add-list], JSON.stringify payload
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self.edit-list = (list-id, opts) ->
payload = {
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token: self.token
list: list-id
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id: "edit-list"
}
for key, value of opts
payload[key] = value
self.send request-types[\edit-list], JSON.stringify payload
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self.remove-task = (task-id) ->
self.send request-types[\remove-task], JSON.stringify {
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token: self.token
task: task-id
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id: "remove-task"
}
# TODO: extra properties
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self.add-task = (list-id, title, opts) ->
payload = {
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token: self.token
list: list-id
title: title
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id: "add-task"
}
for key, value of opts
payload[key] = value
self.send request-types[\add-task], JSON.stringify payload
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self.edit-task = (task-id, opts) ->
payload = {
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token: self.token
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task: task-id
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id: "edit-task"
}
for key, value of opts
payload[key] = value
self.send request-types[\edit-task], JSON.stringify payload
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self.subscribe = (list-id) ->
self.send request-types[\subscribe], JSON.stringify {
token: self.token
list: list-id
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id: "subscribe"
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}
self.unsubscribe = (list-id) ->
self.send request-types[\unsubscribe], JSON.stringify {
token: self.token
list: list-id
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id: "unsubscribe"
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}
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self
}