109 lines
3.9 KiB
Erlang
109 lines
3.9 KiB
Erlang
-module(handler_reviews).
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-include("records.hrl").
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-export([init/2]).
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init(Req, Opts) ->
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handle(Req, Opts).
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handle(Req, _Opts) ->
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case cowboy_req:method(Req) of
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<<"POST">> -> create_review(Req);
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<<"GET">> -> list_reviews(Req);
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_ -> send_error(Req, 405, <<"Method not allowed">>)
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end.
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%% POST /v1/reviews - создание отзыва
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create_review(Req) ->
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case handler_auth:authenticate(Req) of
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{ok, UserId, Req1} ->
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{ok, Body, Req2} = cowboy_req:read_body(Req1),
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try jsx:decode(Body, [return_maps]) of
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Decoded when is_map(Decoded) ->
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case Decoded of
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#{<<"target_type">> := TargetTypeBin,
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<<"target_id">> := TargetId,
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<<"rating">> := Rating,
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<<"comment">> := Comment} ->
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TargetType = parse_target_type(TargetTypeBin),
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case logic_review:create_review(UserId, TargetType, TargetId, Rating, Comment) of
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{ok, Review} ->
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Response = review_to_json(Review),
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send_json(Req2, 201, Response);
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{error, already_reviewed} ->
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send_error(Req2, 409, <<"Already reviewed">>);
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{error, cannot_review} ->
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send_error(Req2, 403, <<"Cannot review this target">>);
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{error, target_not_found} ->
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send_error(Req2, 404, <<"Target not found">>);
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{error, _} ->
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send_error(Req2, 500, <<"Internal server error">>)
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end;
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_ ->
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send_error(Req2, 400, <<"Missing required fields">>)
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end;
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_ ->
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send_error(Req2, 400, <<"Invalid JSON">>)
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catch
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_:_ ->
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send_error(Req2, 400, <<"Invalid JSON format">>)
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end;
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{error, Code, Message, Req1} ->
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send_error(Req1, Code, Message)
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end.
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%% GET /v1/reviews - список отзывов для цели
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list_reviews(Req) ->
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case handler_auth:authenticate(Req) of
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{ok, UserId, Req1} ->
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Qs = cowboy_req:parse_qs(Req1),
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case {proplists:get_value(<<"target_type">>, Qs), proplists:get_value(<<"target_id">>, Qs)} of
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{undefined, _} ->
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send_error(Req1, 400, <<"Missing target_type">>);
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{_, undefined} ->
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send_error(Req1, 400, <<"Missing target_id">>);
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{TargetTypeBin, TargetId} ->
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TargetType = parse_target_type(TargetTypeBin),
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case logic_review:list_reviews(UserId, TargetType, TargetId) of
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{ok, Reviews} ->
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Response = [review_to_json(R) || R <- Reviews],
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send_json(Req1, 200, Response);
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{error, _} ->
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send_error(Req1, 500, <<"Internal server error">>)
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end
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end;
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{error, Code, Message, Req1} ->
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send_error(Req1, Code, Message)
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end.
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%% Вспомогательные функции
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parse_target_type(<<"event">>) -> event;
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parse_target_type(<<"calendar">>) -> calendar;
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parse_target_type(_) -> undefined.
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review_to_json(Review) ->
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#{
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id => Review#review.id,
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user_id => Review#review.user_id,
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target_type => Review#review.target_type,
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target_id => Review#review.target_id,
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rating => Review#review.rating,
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comment => Review#review.comment,
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status => Review#review.status,
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created_at => datetime_to_iso8601(Review#review.created_at),
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updated_at => datetime_to_iso8601(Review#review.updated_at)
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}.
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datetime_to_iso8601({{Year, Month, Day}, {Hour, Minute, Second}}) ->
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iolist_to_binary(io_lib:format("~4..0B-~2..0B-~2..0BT~2..0B:~2..0B:~2..0BZ",
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[Year, Month, Day, Hour, Minute, Second])).
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send_json(Req, Status, Data) ->
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Body = jsx:encode(Data),
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cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
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{ok, Body, []}.
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send_error(Req, Status, Message) ->
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Body = jsx:encode(#{error => Message}),
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cowboy_req:reply(Status, #{<<"content-type">> => <<"application/json">>}, Body, Req),
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{ok, Body, []}. |