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% ==========================================================================================================
% MISULTIN - Example: RESTful support.
%
% >-|-|-(°>
%
% Copyright (C) 2011, Roberto Ostinelli <roberto@ostinelli.net>
% All rights reserved.
%
% BSD License
%
% Redistribution and use in source and binary forms, with or without modification, are permitted provided
% that the following conditions are met:
%
% * Redistributions of source code must retain the above copyright notice, this list of conditions and the
% following disclaimer.
% * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and
% the following disclaimer in the documentation and/or other materials provided with the distribution.
% * Neither the name of the authors nor the names of its contributors may be used to endorse or promote
% products derived from this software without specific prior written permission.
%
% THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED
% WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
% PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
% ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
% TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
% HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
% NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
% POSSIBILITY OF SUCH DAMAGE.
% ==========================================================================================================
-module(misultin_rest).
-export([start/1, stop/0]).

% start misultin http server
start(Port) ->
misultin:start_link([{port, Port}, {loop, fun(Req) -> handle_http(Req) end}]).

% stop misultin
stop() ->
misultin:stop().

% callback function called on incoming http request
handle_http(Req) ->
% dispatch to rest
handle(Req:get(method), Req:resource([lowercase, urldecode]), Req).

% ---------------------------- \/ handle rest --------------------------------------------------------------

% handle a GET on /
handle('GET', [], Req) ->
Req:ok([{"Content-Type", "text/plain"}], "Main home page.");

% handle a GET on /users
handle('GET', ["users"], Req) ->
Req:ok([{"Content-Type", "text/plain"}], "Main users root.");

% handle a GET on /users/{username}
handle('GET', ["users", UserName], Req) ->
Req:ok([{"Content-Type", "text/plain"}], "This is ~s's page.", [UserName]);

% handle a GET on /users/{username}/messages
handle('GET', ["users", UserName, "messages"], Req) ->
Req:ok([{"Content-Type", "text/plain"}], "This is ~s's messages page.", [UserName]);

% handle the 404 page not found
handle(_, _, Req) ->
Req:ok([{"Content-Type", "text/plain"}], "Page not found.").

% ---------------------------- /\ handle rest --------------------------------------------------------------
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