1  import options, asyncdispatch, tables, strutils
 2  import httpbeast, uri
 3  from sequtils import mapIt
 4  
 5  
 6  # TODO: handle USSD HTTP POST
 7  # TODO: array access menu system
 8  # TODO: pin-based registration system (key gen and encrypt with truncated hash of phone number and pin?)
 9  # TODO: PoC Send/Receive
10  # TODO: MPESA Integration https://developer.safaricom.co.ke/docs#command-ids
11  # TODO: How to handle addresses that don't have pphone numers, make addresses first class citizen, with phone numbers attached (and have labelling)
12  
13  
14  # http://blog.microsave.net/2015/09/15/designing-an-effective-user-interface-for-ussd-part2/
15  # "Geography" specific main menu
16  # Limited unbundled main menu
17  # Nesting only complementary options
18  # Customised menu based on usage history
19  # Using familiar terms
20  
21  
22  # https://build.at-labs.io/docs/ussd%2Foverview
23  # sessionId
24  # String 	A unique value generated when the session starts and sent every time a mobile subscriber response has been received.
25  # phoneNumber
26  # String 	The number of the mobile subscriber interacting with your ussd application.
27  # networkCode
28  # String 	The telco of the phoneNumber interacting with your ussd application.
29  # serviceCode
30  # String 	This is your USSD code. Please note that it doesn’t show your channel on shared USSD codes.
31  # text
32  # String 	This shows the user input. It is an empty string in the first notification of a session. After that, it concatenates all the user input within the session with a * until the session ends.
33  
34  # var
35  #   menu =  { 0: "Send Money",
36  #             1: "Withdraw Cash",
37  #             1: "My Account",
38  #           }.toTable
39  
40  # # proc register() =
41  # #   TODO
42  
43  proc onRequest(req: Request): Future[void] =
44    # TODO: Decouple Request Handling from endpoint interface
45    if req.httpMethod == some(HttpPost):
46      let
47        uri = parseUri(req.body.get())
48        params = uri.query.split('&').mapIt($(it.split('=')))
49      echo(req.body.get().split('&').mapIt($(it.split('='))))
50      echo(params)
51      req.send("Hello")
52    else:
53      req.send(Http404)
54  
55  when isMainModule:
56    run(onRequest, Settings(port: Port(8080), bindAddr: ""))
57