Перенести все админские эндпоинты на порт 8445 и добавить отдельную авторизацию для админов. Часть 1

src/handlers/admin/admin_handler_banned_words.erl

@@ -0,0 +1,136 @@
+-module(admin_handler_banned_words).
+-behaviour(cowboy_handler).
+-export([init/2]).
+
+-include("records.hrl").
+
+init(Req, _Opts) ->
+  case cowboy_req:binding(word, Req) of
+    undefined -> handle_collection(Req);
+    Word      -> handle_item(Word, Req)
+  end.
+
+handle_collection(Req) ->
+  case cowboy_req:method(Req) of
+    <<"GET">>  -> list_banned_words(Req);
+    <<"POST">> -> add_banned_word(Req);
+    _          -> send_error(Req, 405, <<"Method not allowed">>)
+  end.
+
+handle_item(Word, Req) ->
+  case cowboy_req:method(Req) of
+    <<"DELETE">> -> delete_banned_word(Word, Req);
+    <<"PUT">>    -> update_banned_word(Word, Req);
+    _            -> send_error(Req, 405, <<"Method not allowed">>)
+  end.
+
+list_banned_words(Req) ->
+  case auth_admin(Req) of
+    {ok, _AdminId, Req1} ->
+      Words = core_banned_words:list_banned_words(),
+      send_json(Req1, 200, [banned_word_to_json(W) || W <- Words]);
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+add_banned_word(Req) ->
+  case auth_admin(Req) of
+    {ok, AdminId, Req1} ->
+      {ok, Body, Req2} = cowboy_req:read_body(Req1),
+      try jsx:decode(Body, [return_maps]) of
+        #{<<"word">> := NewWord} ->
+          case core_banned_words:add_banned_word(NewWord, AdminId) of
+            {ok, WordRec} ->
+              send_json(Req2, 201, banned_word_to_json(WordRec));
+            {error, already_exists} ->
+              send_error(Req2, 409, <<"Word already exists">>);
+            {error, _} ->
+              send_error(Req2, 500, <<"Internal server error">>)
+          end;
+        _ ->
+          send_error(Req2, 400, <<"Missing 'word' field">>)
+      catch
+        _:_ -> send_error(Req2, 400, <<"Invalid JSON">>)
+      end;
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+delete_banned_word(Word, Req) ->
+  case auth_admin(Req) of
+    {ok, _AdminId, Req1} ->
+      case core_banned_words:remove_banned_word(Word) of
+        {ok, deleted} ->
+          send_json(Req1, 200, #{status => <<"deleted">>});
+        {error, not_found} ->
+          send_error(Req1, 404, <<"Word not found">>)
+      end;
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+update_banned_word(Word, Req) ->
+  case auth_admin(Req) of
+    {ok, _AdminId, Req1} ->
+      {ok, Body, Req2} = cowboy_req:read_body(Req1),
+      try jsx:decode(Body, [return_maps]) of
+        #{<<"word">> := NewWord} ->
+          case core_banned_words:update_banned_word(Word, NewWord) of
+            {ok, WordRec} ->
+              send_json(Req2, 200, banned_word_to_json(WordRec));
+            {error, not_found} ->
+              send_error(Req2, 404, <<"Word not found">>);
+            {error, _} ->
+              send_error(Req2, 500, <<"Internal server error">>)
+          end;
+        _ ->
+          send_error(Req2, 400, <<"Missing 'word' field">>)
+      catch
+        _:_ -> send_error(Req2, 400, <<"Invalid JSON">>)
+      end;
+    {error, Code, Message, Req1} ->
+      send_error(Req1, Code, Message)
+  end.
+
+auth_admin(Req) ->
+  case handler_auth:authenticate(Req) of
+    {ok, AdminId, Req1} ->
+      case is_admin(AdminId) of
+        true  -> {ok, AdminId, Req1};
+        false -> {error, 403, <<"Admin access required">>, Req1}
+      end;
+    {error, Code, Message, Req1} ->
+      {error, Code, Message, Req1}
+  end.
+
+is_admin(UserId) ->
+  case core_user:get_by_id(UserId) of
+    {ok, User} ->
+      Role = User#user.role,
+      Role =:= admin orelse Role =:= superadmin orelse
+        Role =:= moderator orelse Role =:= support;
+    _ -> false
+  end.
+
+banned_word_to_json(BW) ->
+  #{
+    id        => BW#banned_word.id,
+    word      => BW#banned_word.word,
+    added_by  => BW#banned_word.added_by,
+    added_at  => datetime_to_iso8601(BW#banned_word.added_at)
+  }.
+
+datetime_to_iso8601({{Year, Month, Day}, {Hour, Minute, Second}}) ->
+  iolist_to_binary(io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0BZ",
+    [Year, Month, Day, Hour, Minute, Second]));
+datetime_to_iso8601(undefined) -> undefined.
+
+send_json(Req, Status, Data) ->
+  Body = jsx:encode(Data),
+  cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
+  {ok, Body, []}.
+
+send_error(Req, Status, Message) ->
+  Body = jsx:encode(#{error => Message}),
+  cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
+  {ok, Body, []}.