Simple rest calls and answers

scripts/actions/rest.coffee

+require 'coffeescript/register'
+
+{ msgVariables, stringElseRandomKey } = require '../lib/common'
+
+# interpolate a string to replace {{ placeholder }} keys with passed object values
+# I couldn't find how to make delayed string interpolation with coffeescript yet :/
+# Reference solution https://stackoverflow.com/questions/9829470/in-coffeescript-is-there-an-official-way-to-interpolate-a-string-at-run-time
+String::interp = (values)->
+    @replace /{{(.*)}}/g,
+        (ph, key)->
+            values[key] or ''
+            
+class Rest
+  constructor: (@interaction) ->
+  process: (msg) =>
+    rest_uri = @interaction.rest_uri
+    offline_message = (
+      @interaction.offline or 'Sorry, there is no online agents to transfer to.'
+    )
+    type = @interaction.type?.toLowerCase() or 'random'
+    switch type
+      when 'block'
+        messages = @interaction.answer.map (line) ->
+          return msgVariables line, msg
+        msg.sendWithNaturalDelay messages
+      when 'random'
+        message = stringElseRandomKey @interaction.answer
+        message = msgVariables message, msg
+        msg.sendWithNaturalDelay message
+
+    method = @interaction.rest.method?.toLowerCase() or 'get'
+    @rest(msg, 3000, rest_uri, offline_message, type, method)
+
+
+  rest: (msg, delay = 3000, rest_uri, offline_message, type, method) ->
+    data = JSON.stringify(@interaction.rest.data)
+    successmsg = @interaction.rest.successmsg
+
+    headers = @interaction.rest.headers
+    
+    headers = 
+        'Content-Type': 'application/json'
+    
+    msg.http(@interaction.rest.url)
+        .headers(headers)[method](data) (err, response, body) ->
+            if response.statusCode isnt 200
+                msg.sendWithNaturalDelay "We're sorry, something went wrong :/"
+                return
+            results = JSON.parse(body)
+            message = successmsg.interp (results)
+            msg.sendWithNaturalDelay message
+
+module.exports = Rest