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-module(dispatcher).
-export([start/0, init/0, handle/3]).

start() ->
    server:start(dis, dispatcher).
    code:purge(server),
    code:load_abs("../common/server"),

init() ->
    dict:new().

handle(_, {register, {User, Password}}, Dict) ->
    case dict:find(User, Dict) of
	{ok, _}->
	    {{error, duplicated_user}, Dict};
	_ ->
	    {{ok, user_created}, dict:store(User, Password, Dict)}
    end;

handle(From, {login, {User, Password}}, Dict) ->
    case dict:find(User, Dict) of
	{ok, Password} ->
	    {{ok, {logged_in, client:start(From)}}, Dict};
	_ ->
	    {{error, user_or_password_invalid}, Dict}
    end;

handle(_, _, Dict) ->
    {{error, unknown_command}, Dict}.