ucs: adding a basic webserver, only returning an ICS file on GET queries

Signed-off-by: Alban Gruin <alban at pa1ch dot fr>

1 files changed, 16 insertions, 5 deletions

diff --git a/src/ucs.ml b/src/ucs.ml
index b4e0952..16fce75 100644
--- a/src/ucs.ml
+++ b/src/ucs.ml
@@ -19,7 +19,7 @@ open Lwt
 open Cohttp
 open Cohttp_lwt_unix
 
-let body =
+let body () =
   let parameters = Uri.encoded_of_query
                      ["start", ["2020-09-01"]; "end", ["2020-10-01"];
                       "resType", ["103"]; "calView", ["month"];
@@ -30,8 +30,19 @@ let body =
   >>= fun (_resp, body) ->
   Cohttp_lwt.Body.to_string body
 
+let server =
+  let callback _conn req _body =
+    let meth = Request.meth req in
+    match meth with
+    | `GET ->
+       body () >>= fun body ->
+       let body = Ics.to_string @@ Course.decode body and
+           headers = Header.init_with "Content-Type" "text/calendar" in
+       Server.respond_string ~status:`OK ~body ~headers ()
+    | _ ->
+       Server.respond_string
+         ~status:`Method_not_allowed ~body:"Method not allowed\n" () in
+  Server.create ~mode:(`TCP (`Port 8080)) (Server.make ~callback ())
+
 let () =
-  Lwt_main.run body
-  |> Course.decode
-  |> Ics.to_string
-  |> print_endline
+  ignore @@ Lwt_main.run server