-module(zeptomail).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).
-define(FILEPATH, "src/zeptomail.gleam").
-export([email_request/2, decode_email_response/1]).
-export_type([email/0, addressee/0, body/0, api_data/0, api_datum/0, api_error/0, api_error_detail/0]).

-if(?OTP_RELEASE >= 27).
-define(MODULEDOC(Str), -moduledoc(Str)).
-define(DOC(Str), -doc(Str)).
-else.
-define(MODULEDOC(Str), -compile([])).
-define(DOC(Str), -compile([])).
-endif.

-type email() :: {email,
        addressee(),
        list(addressee()),
        list(addressee()),
        list(addressee()),
        list(addressee()),
        body(),
        binary()}.

-type addressee() :: {addressee, binary(), binary()}.

-type body() :: {text_body, binary()} | {html_body, binary()}.

-type api_data() :: {api_data, binary(), binary(), binary(), list(api_datum())}.

-type api_datum() :: {api_datum, binary(), binary()}.

-type api_error() :: {api_error, binary(), binary(), list(api_error_detail())} |
    {unexpected_response, gleam@json:decode_error()}.

-type api_error_detail() :: {api_error_detail,
        binary(),
        binary(),
        gleam@option:option(binary()),
        gleam@option:option(binary())}.

-file("src/zeptomail.gleam", 80).
-spec encode_addressee(addressee()) -> gleam@json:json().
encode_addressee(Addressee) ->
    gleam@json:object(
        [{<<"name"/utf8>>, gleam@json:string(erlang:element(2, Addressee))},
            {<<"address"/utf8>>,
                gleam@json:string(erlang:element(3, Addressee))}]
    ).

-file("src/zeptomail.gleam", 58).
-spec encode_email(email()) -> gleam@json:json().
encode_email(Email) ->
    Bodykind = case erlang:element(7, Email) of
        {text_body, _} ->
            <<"textbody"/utf8>>;

        {html_body, _} ->
            <<"htmlbody"/utf8>>
    end,
    Addressee_array = fun(Addressees) ->
        gleam@json:array(
            Addressees,
            fun(A) ->
                gleam@json:object(
                    [{<<"email_address"/utf8>>, encode_addressee(A)}]
                )
            end
        )
    end,
    gleam@json:object(
        [{<<"from"/utf8>>, encode_addressee(erlang:element(2, Email))},
            {<<"to"/utf8>>, Addressee_array(erlang:element(3, Email))},
            {<<"cc"/utf8>>, Addressee_array(erlang:element(4, Email))},
            {<<"bcc"/utf8>>, Addressee_array(erlang:element(5, Email))},
            {<<"reply_to"/utf8>>,
                gleam@json:array(
                    erlang:element(6, Email),
                    fun encode_addressee/1
                )},
            {<<"subject"/utf8>>, gleam@json:string(erlang:element(8, Email))},
            {Bodykind,
                gleam@json:string(erlang:element(2, erlang:element(7, Email)))}]
    ).

-file("src/zeptomail.gleam", 11).
?DOC(" Create a HTTP request to send an email via the ZeptoMail API\n").
-spec email_request(email(), binary()) -> gleam@http@request:request(binary()).
email_request(Email, Api_token) ->
    Body = begin
        _pipe = Email,
        _pipe@1 = encode_email(_pipe),
        gleam@json:to_string(_pipe@1)
    end,
    _pipe@2 = gleam@http@request:new(),
    _pipe@3 = gleam@http@request:set_method(_pipe@2, post),
    _pipe@4 = gleam@http@request:set_host(_pipe@3, <<"api.zeptomail.com"/utf8>>),
    _pipe@5 = gleam@http@request:set_path(_pipe@4, <<"/v1.1/email"/utf8>>),
    _pipe@6 = gleam@http@request:set_body(_pipe@5, Body),
    gleam@http@request:prepend_header(
        _pipe@6,
        <<"authorization"/utf8>>,
        Api_token
    ).

-file("src/zeptomail.gleam", 113).
-spec api_datum_decoder() -> gleam@dynamic@decode:decoder(api_datum()).
api_datum_decoder() ->
    gleam@dynamic@decode:field(
        <<"code"/utf8>>,
        {decoder, fun gleam@dynamic@decode:decode_string/1},
        fun(Code) ->
            gleam@dynamic@decode:field(
                <<"message"/utf8>>,
                {decoder, fun gleam@dynamic@decode:decode_string/1},
                fun(Message) ->
                    gleam@dynamic@decode:success({api_datum, Code, Message})
                end
            )
        end
    ).

-file("src/zeptomail.gleam", 101).
-spec api_data_decoder() -> gleam@dynamic@decode:decoder(api_data()).
api_data_decoder() ->
    gleam@dynamic@decode:field(
        <<"object"/utf8>>,
        {decoder, fun gleam@dynamic@decode:decode_string/1},
        fun(Object) ->
            gleam@dynamic@decode:field(
                <<"request_id"/utf8>>,
                {decoder, fun gleam@dynamic@decode:decode_string/1},
                fun(Request_id) ->
                    gleam@dynamic@decode:field(
                        <<"message"/utf8>>,
                        {decoder, fun gleam@dynamic@decode:decode_string/1},
                        fun(Message) ->
                            gleam@dynamic@decode:field(
                                <<"data"/utf8>>,
                                gleam@dynamic@decode:list(api_datum_decoder()),
                                fun(Data) ->
                                    gleam@dynamic@decode:success(
                                        {api_data,
                                            Object,
                                            Request_id,
                                            Message,
                                            Data}
                                    )
                                end
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/zeptomail.gleam", 149).
-spec api_error_detail_decoder() -> gleam@dynamic@decode:decoder(api_error_detail()).
api_error_detail_decoder() ->
    gleam@dynamic@decode:field(
        <<"code"/utf8>>,
        {decoder, fun gleam@dynamic@decode:decode_string/1},
        fun(Code) ->
            gleam@dynamic@decode:field(
                <<"message"/utf8>>,
                {decoder, fun gleam@dynamic@decode:decode_string/1},
                fun(Message) ->
                    gleam@dynamic@decode:optional_field(
                        <<"target"/utf8>>,
                        none,
                        gleam@dynamic@decode:optional(
                            {decoder, fun gleam@dynamic@decode:decode_string/1}
                        ),
                        fun(Target) ->
                            gleam@dynamic@decode:optional_field(
                                <<"target_value"/utf8>>,
                                none,
                                gleam@dynamic@decode:optional(
                                    {decoder,
                                        fun gleam@dynamic@decode:decode_string/1}
                                ),
                                fun(Target_value) ->
                                    gleam@dynamic@decode:success(
                                        {api_error_detail,
                                            Code,
                                            Message,
                                            Target,
                                            Target_value}
                                    )
                                end
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/zeptomail.gleam", 129).
-spec api_error_decoder() -> gleam@dynamic@decode:decoder(api_error()).
api_error_decoder() ->
    gleam@dynamic@decode:subfield(
        [<<"error"/utf8>>, <<"code"/utf8>>],
        {decoder, fun gleam@dynamic@decode:decode_string/1},
        fun(Code) ->
            gleam@dynamic@decode:subfield(
                [<<"error"/utf8>>, <<"message"/utf8>>],
                {decoder, fun gleam@dynamic@decode:decode_string/1},
                fun(Message) ->
                    gleam@dynamic@decode:subfield(
                        [<<"error"/utf8>>, <<"details"/utf8>>],
                        gleam@dynamic@decode:list(api_error_detail_decoder()),
                        fun(Details) ->
                            gleam@dynamic@decode:success(
                                {api_error, Code, Message, Details}
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/zeptomail.gleam", 26).
?DOC(" Create a HTTP request to send an email via the ZeptoMail API\n").
-spec decode_email_response(gleam@http@response:response(binary())) -> {ok,
        api_data()} |
    {error, api_error()}.
decode_email_response(Response) ->
    case (erlang:element(2, Response) >= 200) andalso (erlang:element(
        2,
        Response
    )
    < 300) of
        true ->
            _pipe = erlang:element(4, Response),
            _pipe@1 = gleam@json:parse(_pipe, api_data_decoder()),
            gleam@result:map_error(
                _pipe@1,
                fun(Field@0) -> {unexpected_response, Field@0} end
            );

        false ->
            _pipe@2 = erlang:element(4, Response),
            _pipe@3 = gleam@json:parse(_pipe@2, api_error_decoder()),
            _pipe@4 = gleam@result:map_error(
                _pipe@3,
                fun(Field@0) -> {unexpected_response, Field@0} end
            ),
            gleam@result:then(_pipe@4, fun(Field@0) -> {error, Field@0} end)
    end.