------------------------------------------------------------------------------
--                              Ada Web Server                              --
--                                                                          --
--                     Copyright (C) 2003-2024, AdaCore                     --
--                                                                          --
--  This is free software;  you can redistribute it  and/or modify it       --
--  under terms of the  GNU General Public License as published  by the     --
--  Free Software  Foundation;  either version 3,  or (at your option) any  --
--  later version.  This software is distributed in the hope  that it will  --
--  be useful, but WITHOUT ANY WARRANTY;  without even the implied warranty --
--  of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU     --
--  General Public License for  more details.                               --
--                                                                          --
--  You should have  received  a copy of the GNU General  Public  License   --
--  distributed  with  this  software;   see  file COPYING3.  If not, go    --
--  to http://www.gnu.org/licenses for a complete copy of the license.      --
------------------------------------------------------------------------------

with Ada.Exceptions;
with Ada.Text_IO;

with AWS.Client;
with AWS.Config.Set;
with AWS.Dispatchers.Callback;
with AWS.Server.Status;
with AWS.Services.Dispatchers.Method;
with AWS.Status;
with AWS.Response;
with AWS.Utils;

procedure Dispatch_Method is

   use Ada;
   use AWS;
   use AWS.Services;

   Cfg : Config.Object;

   function CB1
     (Request : AWS.Status.Data)
      return AWS.Response.Data
   is
      pragma Unreferenced (Request);
   begin
      return AWS.Response.Build ("text/html", "Dispatch 1 !");
   end CB1;

   function CB2
     (Request : AWS.Status.Data)
      return AWS.Response.Data
   is
      pragma Unreferenced (Request);
   begin
      --  Head response, we will not see the response, it takes 23 bytes
      return AWS.Response.Build ("text/html", "Dispatch 2 ! (23 chars)");
   end CB2;

   function CB3
     (Request : AWS.Status.Data)
      return AWS.Response.Data
   is
      pragma Unreferenced (Request);
   begin
      return AWS.Response.Build ("text/html", "Dispatch 3 !");
   end CB3;

   H  : AWS.Services.Dispatchers.Method.Handler;

   WS : AWS.Server.HTTP;

   R : Response.Data;

begin
   Services.Dispatchers.Method.Register
     (H, Status.GET, CB1'Unrestricted_Access);

   Services.Dispatchers.Method.Register
     (H, Status.HEAD, CB2'Unrestricted_Access);

   Services.Dispatchers.Method.Register
     (H, Status.POST, CB3'Unrestricted_Access);

   AWS.Config.Set.Server_Host (Cfg, "localhost");
   AWS.Config.Set.Server_Port (Cfg, 0);

   AWS.Server.Start (WS, Dispatcher => H, Config => Cfg);

   declare
      URL : constant String := AWS.Server.Status.Local_URL (WS) & "/test";
   begin
      R := Client.Get (URL);
      Text_IO.Put_Line ("> " & Response.Message_Body (R));

      R := Client.Post (URL, "go");
      Text_IO.Put_Line ("> " & Response.Message_Body (R));

      R := Client.Head (URL);
      Text_IO.Put_Line ("> " & Response.Message_Body (R));
      Text_IO.Put_Line ("> " & Utils.Image (Response.Content_Length (R)));
   end;

   --  Close servers

   AWS.Server.Shutdown (WS);

exception
   when E : others =>
      Text_IO.Put_Line
        ("Main task " & Ada.Exceptions.Exception_Information (E));
end Dispatch_Method;