%% WARNING: DO NOT EDIT, AUTO-GENERATED CODE!
%% See https://github.com/aws-beam/aws-codegen for more details.

%% @doc This AWS CodeStar Notifications API Reference provides descriptions
%% and usage examples of the operations and data types for the AWS CodeStar
%% Notifications API.
%%
%% You can use the AWS CodeStar Notifications API to work with the following
%% objects:
%%
%% Notification rules, by calling the following:
%%
%% <ul> <li> `CreateNotificationRule', which creates a notification rule
%% for a resource in your account.
%%
%% </li> <li> `DeleteNotificationRule', which deletes a notification
%% rule.
%%
%% </li> <li> `DescribeNotificationRule', which provides information
%% about a notification rule.
%%
%% </li> <li> `ListNotificationRules', which lists the notification rules
%% associated with your account.
%%
%% </li> <li> `UpdateNotificationRule', which changes the name, events,
%% or targets associated with a notification rule.
%%
%% </li> <li> `Subscribe', which subscribes a target to a notification
%% rule.
%%
%% </li> <li> `Unsubscribe', which removes a target from a notification
%% rule.
%%
%% </li> </ul> Targets, by calling the following:
%%
%% <ul> <li> `DeleteTarget', which removes a notification rule target
%% from a notification rule.
%%
%% </li> <li> `ListTargets', which lists the targets associated with a
%% notification rule.
%%
%% </li> </ul> Events, by calling the following:
%%
%% <ul> <li> `ListEventTypes', which lists the event types you can
%% include in a notification rule.
%%
%% </li> </ul> Tags, by calling the following:
%%
%% <ul> <li> `ListTagsForResource', which lists the tags already
%% associated with a notification rule in your account.
%%
%% </li> <li> `TagResource', which associates a tag you provide with a
%% notification rule in your account.
%%
%% </li> <li> `UntagResource', which removes a tag from a notification
%% rule in your account.
%%
%% </li> </ul> For information about how to use AWS CodeStar Notifications,
%% see the Amazon Web Services Developer Tools Console User Guide:
%% https://docs.aws.amazon.com/dtconsole/latest/userguide/what-is-dtconsole.html.
-module(aws_codestar_notifications).

-export([create_notification_rule/2,
         create_notification_rule/3,
         delete_notification_rule/2,
         delete_notification_rule/3,
         delete_target/2,
         delete_target/3,
         describe_notification_rule/2,
         describe_notification_rule/3,
         list_event_types/2,
         list_event_types/3,
         list_notification_rules/2,
         list_notification_rules/3,
         list_tags_for_resource/2,
         list_tags_for_resource/3,
         list_targets/2,
         list_targets/3,
         subscribe/2,
         subscribe/3,
         tag_resource/2,
         tag_resource/3,
         unsubscribe/2,
         unsubscribe/3,
         untag_resource/3,
         untag_resource/4,
         update_notification_rule/2,
         update_notification_rule/3]).

-include_lib("hackney/include/hackney_lib.hrl").

%%====================================================================
%% API
%%====================================================================

%% @doc Creates a notification rule for a resource.
%%
%% The rule specifies the events you want notifications about and the targets
%% (such as Chatbot topics or Chatbot clients configured for Slack) where you
%% want to receive them.
create_notification_rule(Client, Input) ->
    create_notification_rule(Client, Input, []).
create_notification_rule(Client, Input0, Options0) ->
    Method = post,
    Path = ["/createNotificationRule"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Deletes a notification rule for a resource.
delete_notification_rule(Client, Input) ->
    delete_notification_rule(Client, Input, []).
delete_notification_rule(Client, Input0, Options0) ->
    Method = post,
    Path = ["/deleteNotificationRule"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Deletes a specified target for notifications.
delete_target(Client, Input) ->
    delete_target(Client, Input, []).
delete_target(Client, Input0, Options0) ->
    Method = post,
    Path = ["/deleteTarget"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Returns information about a specified notification rule.
describe_notification_rule(Client, Input) ->
    describe_notification_rule(Client, Input, []).
describe_notification_rule(Client, Input0, Options0) ->
    Method = post,
    Path = ["/describeNotificationRule"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Returns information about the event types available for configuring
%% notifications.
list_event_types(Client, Input) ->
    list_event_types(Client, Input, []).
list_event_types(Client, Input0, Options0) ->
    Method = post,
    Path = ["/listEventTypes"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Returns a list of the notification rules for an Amazon Web Services
%% account.
list_notification_rules(Client, Input) ->
    list_notification_rules(Client, Input, []).
list_notification_rules(Client, Input0, Options0) ->
    Method = post,
    Path = ["/listNotificationRules"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Returns a list of the tags associated with a notification rule.
list_tags_for_resource(Client, Input) ->
    list_tags_for_resource(Client, Input, []).
list_tags_for_resource(Client, Input0, Options0) ->
    Method = post,
    Path = ["/listTagsForResource"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Returns a list of the notification rule targets for an Amazon Web
%% Services account.
list_targets(Client, Input) ->
    list_targets(Client, Input, []).
list_targets(Client, Input0, Options0) ->
    Method = post,
    Path = ["/listTargets"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Creates an association between a notification rule and an Chatbot
%% topic or Chatbot client so that the associated target can receive
%% notifications when the events described in the rule are triggered.
subscribe(Client, Input) ->
    subscribe(Client, Input, []).
subscribe(Client, Input0, Options0) ->
    Method = post,
    Path = ["/subscribe"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Associates a set of provided tags with a notification rule.
tag_resource(Client, Input) ->
    tag_resource(Client, Input, []).
tag_resource(Client, Input0, Options0) ->
    Method = post,
    Path = ["/tagResource"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Removes an association between a notification rule and an Chatbot
%% topic so that subscribers to that topic stop receiving notifications when
%% the events described in the rule are triggered.
unsubscribe(Client, Input) ->
    unsubscribe(Client, Input, []).
unsubscribe(Client, Input0, Options0) ->
    Method = post,
    Path = ["/unsubscribe"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Removes the association between one or more provided tags and a
%% notification rule.
untag_resource(Client, Arn, Input) ->
    untag_resource(Client, Arn, Input, []).
untag_resource(Client, Arn, Input0, Options0) ->
    Method = post,
    Path = ["/untagResource/", aws_util:encode_uri(Arn), ""],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    QueryMapping = [
                     {<<"tagKeys">>, <<"TagKeys">>}
                   ],
    {Query_, Input} = aws_request:build_headers(QueryMapping, Input2),
    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%% @doc Updates a notification rule for a resource.
%%
%% You can change the events that trigger the notification rule, the status
%% of the rule, and the targets that receive the notifications.
%%
%% To add or remove tags for a notification rule, you must use
%% `TagResource' and `UntagResource'.
update_notification_rule(Client, Input) ->
    update_notification_rule(Client, Input, []).
update_notification_rule(Client, Input0, Options0) ->
    Method = post,
    Path = ["/updateNotificationRule"],
    SuccessStatusCode = undefined,
    Options = [{send_body_as_binary, false},
               {receive_body_as_binary, false},
               {append_sha256_content_hash, false}
               | Options0],

    Headers = [],
    Input1 = Input0,

    CustomHeaders = [],
    Input2 = Input1,

    Query_ = [],
    Input = Input2,

    request(Client, Method, Path, Query_, CustomHeaders ++ Headers, Input, Options, SuccessStatusCode).

%%====================================================================
%% Internal functions
%%====================================================================

-spec request(aws_client:aws_client(), atom(), iolist(), list(),
              list(), map() | undefined, list(), pos_integer() | undefined) ->
    {ok, {integer(), list()}} |
    {ok, Result, {integer(), list(), hackney:client()}} |
    {error, Error, {integer(), list(), hackney:client()}} |
    {error, term()} when
    Result :: map(),
    Error :: map().
request(Client, Method, Path, Query, Headers0, Input, Options, SuccessStatusCode) ->
  RequestFun = fun() -> do_request(Client, Method, Path, Query, Headers0, Input, Options, SuccessStatusCode) end,
  aws_request:request(RequestFun, Options).

do_request(Client, Method, Path, Query, Headers0, Input, Options, SuccessStatusCode) ->
    Client1 = Client#{service => <<"codestar-notifications">>},
    Host = build_host(<<"codestar-notifications">>, Client1),
    URL0 = build_url(Host, Path, Client1),
    URL = aws_request:add_query(URL0, Query),
    AdditionalHeaders1 = [ {<<"Host">>, Host}
                         , {<<"Content-Type">>, <<"application/x-amz-json-1.1">>}
                         ],
    Payload =
      case proplists:get_value(send_body_as_binary, Options) of
        true ->
          maps:get(<<"Body">>, Input, <<"">>);
        false ->
          encode_payload(Input)
      end,
    AdditionalHeaders = case proplists:get_value(append_sha256_content_hash, Options, false) of
                          true ->
                            add_checksum_hash_header(AdditionalHeaders1, Payload);
                          false ->
                            AdditionalHeaders1
                        end,
    Headers1 = aws_request:add_headers(AdditionalHeaders, Headers0),

    MethodBin = aws_request:method_to_binary(Method),
    SignedHeaders = aws_request:sign_request(Client1, MethodBin, URL, Headers1, Payload),
    Response = hackney:request(Method, URL, SignedHeaders, Payload, Options),
    DecodeBody = not proplists:get_value(receive_body_as_binary, Options),
    handle_response(Response, SuccessStatusCode, DecodeBody).

add_checksum_hash_header(Headers, Body) ->
  [ {<<"X-Amz-CheckSum-SHA256">>, base64:encode(crypto:hash(sha256, Body))}
  | Headers
  ].

handle_response({ok, StatusCode, ResponseHeaders}, SuccessStatusCode, _DecodeBody)
  when StatusCode =:= 200;
       StatusCode =:= 202;
       StatusCode =:= 204;
       StatusCode =:= 206;
       StatusCode =:= SuccessStatusCode ->
    {ok, {StatusCode, ResponseHeaders}};
handle_response({ok, StatusCode, ResponseHeaders}, _, _DecodeBody) ->
    {error, {StatusCode, ResponseHeaders}};
handle_response({ok, StatusCode, ResponseHeaders, Client}, SuccessStatusCode, DecodeBody)
  when StatusCode =:= 200;
       StatusCode =:= 202;
       StatusCode =:= 204;
       StatusCode =:= 206;
       StatusCode =:= SuccessStatusCode ->
    case hackney:body(Client) of
        {ok, <<>>} when StatusCode =:= 200;
                        StatusCode =:= SuccessStatusCode ->
            {ok, #{}, {StatusCode, ResponseHeaders, Client}};
        {ok, Body} ->
            Result = case DecodeBody of
                       true ->
                         try
                           jsx:decode(Body)
                         catch
                           Error:Reason:Stack ->
                             erlang:raise(error, {body_decode_failed, Error, Reason, StatusCode, Body}, Stack)
                         end;
                       false -> #{<<"Body">> => Body}
                     end,
            {ok, Result, {StatusCode, ResponseHeaders, Client}}
    end;
handle_response({ok, StatusCode, _ResponseHeaders, _Client}, _, _DecodeBody)
  when StatusCode =:= 503 ->
  %% Retriable error if retries are enabled
  {error, service_unavailable};
handle_response({ok, StatusCode, ResponseHeaders, Client}, _, _DecodeBody) ->
    {ok, Body} = hackney:body(Client),
    try
      DecodedError = jsx:decode(Body),
      {error, DecodedError, {StatusCode, ResponseHeaders, Client}}
    catch
      Error:Reason:Stack ->
        erlang:raise(error, {body_decode_failed, Error, Reason, StatusCode, Body}, Stack)
    end;
handle_response({error, Reason}, _, _DecodeBody) ->
  {error, Reason}.

build_host(_EndpointPrefix, #{region := <<"local">>, endpoint := Endpoint}) ->
    Endpoint;
build_host(_EndpointPrefix, #{region := <<"local">>}) ->
    <<"localhost">>;
build_host(EndpointPrefix, #{region := Region, endpoint := Endpoint}) ->
    aws_util:binary_join([EndpointPrefix, Region, Endpoint], <<".">>).

build_url(Host, Path0, Client) ->
    Proto = aws_client:proto(Client),
    Path = erlang:iolist_to_binary(Path0),
    Port = aws_client:port(Client),
    aws_util:binary_join([Proto, <<"://">>, Host, <<":">>, Port, Path], <<"">>).

-spec encode_payload(undefined | map()) -> binary().
encode_payload(undefined) ->
  <<>>;
encode_payload(Input) ->
  jsx:encode(Input).