oaspec

-module(oaspec@codegen@decoders).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/oaspec/codegen/decoders.gleam").
-export([generate/1]).

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

-file("src/oaspec/codegen/decoders.gleam", 829).
?DOC(" Generate decoder for a primitive type (String, Int, Float, Bool).\n").
-spec generate_primitive_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    binary(),
    binary()
) -> gleam@string_tree:string_tree().
generate_primitive_decoder(
    Sb,
    Fn_name,
    Decoder_fn_name,
    Gleam_type,
    Decoder_expr
) ->
    _pipe = Sb,
    _pipe@1 = oaspec@util@string_extra:line(
        _pipe,
        <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                    "() -> decode.Decoder("/utf8>>/binary,
                Gleam_type/binary>>/binary,
            ") {"/utf8>>
    ),
    _pipe@2 = oaspec@util@string_extra:indent(_pipe@1, 1, Decoder_expr),
    _pipe@3 = oaspec@util@string_extra:line(_pipe@2, <<"}"/utf8>>),
    _pipe@4 = oaspec@util@string_extra:blank_line(_pipe@3),
    _pipe@5 = oaspec@util@string_extra:line(
        _pipe@4,
        <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                    "(json_string: String) -> Result("/utf8>>/binary,
                Gleam_type/binary>>/binary,
            ", json.DecodeError) {"/utf8>>
    ),
    _pipe@6 = oaspec@util@string_extra:indent(
        _pipe@5,
        1,
        <<<<"json.parse(json_string, "/utf8, Decoder_expr/binary>>/binary,
            ")"/utf8>>
    ),
    _pipe@7 = oaspec@util@string_extra:line(_pipe@6, <<"}"/utf8>>),
    oaspec@util@string_extra:blank_line(_pipe@7).

-file("src/oaspec/codegen/decoders.gleam", 1151).
?DOC(
    " Get the discriminator value for a $ref.\n"
    " OpenAPI discriminator.mapping is keyed by payload values, with $ref paths\n"
    " as values: { \"dog\": \"#/components/schemas/Dog\" }.\n"
    " Given a ref_name like \"Dog\", find the mapping key that points to it.\n"
    " Falls back to ref_name if no explicit mapping exists.\n"
).
-spec get_discriminator_value(
    oaspec@openapi@schema:discriminator(),
    binary(),
    binary()
) -> binary().
get_discriminator_value(Disc, Ref, Ref_name) ->
    Found = begin
        _pipe = maps:to_list(erlang:element(3, Disc)),
        gleam@list:find(
            _pipe,
            fun(Entry) ->
                {_, Target} = Entry,
                (Target =:= Ref) orelse (oaspec@openapi@resolver:ref_to_name(
                    Target
                )
                =:= Ref_name)
            end
        )
    end,
    case Found of
        {ok, {Disc_value, _}} ->
            Disc_value;

        {error, _} ->
            Ref_name
    end.

-file("src/oaspec/codegen/decoders.gleam", 1173).
?DOC(
    " Convert a SchemaRef to a decoder expression string.\n"
    " parent_name is used to resolve inline enum decoder names.\n"
).
-spec schema_ref_to_decoder(
    oaspec@openapi@schema:schema_ref(),
    binary(),
    binary()
) -> binary().
schema_ref_to_decoder(Ref, Parent_name, Prop_name) ->
    case Ref of
        {inline, {string_schema, _, _, Enum_values, _, _, _}} when Enum_values =/= [] ->
            Decoder_name = oaspec@util@naming:to_snake_case(
                <<(oaspec@util@naming:schema_to_type_name(Parent_name))/binary,
                    (oaspec@util@naming:schema_to_type_name(Prop_name))/binary>>
            ),
            <<Decoder_name/binary, "_decoder()"/utf8>>;

        {inline, {array_schema, _, Items, _, _, _}} ->
            Inner = schema_ref_to_decoder(Items, Parent_name, Prop_name),
            <<<<"decode.list("/utf8, Inner/binary>>/binary, ")"/utf8>>;

        _ ->
            oaspec@codegen@schema_dispatch:decoder_expr(Ref)
    end.

-file("src/oaspec/codegen/decoders.gleam", 1197).
?DOC(" Check if a SchemaRef has nullable: true.\n").
-spec schema_ref_is_nullable(
    oaspec@openapi@schema:schema_ref(),
    oaspec@codegen@context:context()
) -> boolean().
schema_ref_is_nullable(Ref, Ctx) ->
    case Ref of
        {inline, Schema} ->
            oaspec@openapi@schema:is_nullable(Schema);

        {reference, _, _} ->
            case oaspec@openapi@resolver:resolve_schema_ref(
                Ref,
                oaspec@codegen@context:spec(Ctx)
            ) of
                {ok, Resolved_schema} ->
                    oaspec@openapi@schema:is_nullable(Resolved_schema);

                {error, _} ->
                    false
            end
    end.

-file("src/oaspec/codegen/decoders.gleam", 1210).
?DOC(" Get element at index from a list, or return a default.\n").
-spec list_at_or(list(binary()), integer(), binary()) -> binary().
list_at_or(Lst, Idx, Default) ->
    case {Lst, Idx} of
        {[], _} ->
            Default;

        {[Head | _], 0} ->
            Head;

        {[_ | Rest], N} ->
            list_at_or(Rest, N - 1, Default)
    end.

-file("src/oaspec/codegen/decoders.gleam", 1219).
?DOC(" Convert a SchemaRef to a qualified Gleam type string (with types. prefix for refs).\n").
-spec qualified_schema_ref_type(
    oaspec@openapi@schema:schema_ref(),
    oaspec@codegen@context:context()
) -> binary().
qualified_schema_ref_type(Ref, Ctx) ->
    case Ref of
        {inline, Schema} ->
            oaspec@codegen@types:schema_to_gleam_type(Schema, Ctx);

        _ ->
            oaspec@codegen@schema_dispatch:schema_ref_qualified_type(Ref)
    end.

-file("src/oaspec/codegen/decoders.gleam", 860).
?DOC(" Generate decoder for an ArraySchema.\n").
-spec generate_array_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    binary(),
    oaspec@openapi@schema:schema_ref(),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_array_decoder(Sb, Name, Fn_name, Decoder_fn_name, Items, Ctx) ->
    Inner_decoder = schema_ref_to_decoder(Items, Name, <<""/utf8>>),
    Inner_type = qualified_schema_ref_type(Items, Ctx),
    Gleam_type = <<<<"List("/utf8, Inner_type/binary>>/binary, ")"/utf8>>,
    _pipe = Sb,
    _pipe@1 = oaspec@util@string_extra:line(
        _pipe,
        <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                    "() -> decode.Decoder("/utf8>>/binary,
                Gleam_type/binary>>/binary,
            ") {"/utf8>>
    ),
    _pipe@2 = oaspec@util@string_extra:indent(
        _pipe@1,
        1,
        <<<<"decode.list("/utf8, Inner_decoder/binary>>/binary, ")"/utf8>>
    ),
    _pipe@3 = oaspec@util@string_extra:line(_pipe@2, <<"}"/utf8>>),
    _pipe@4 = oaspec@util@string_extra:blank_line(_pipe@3),
    _pipe@5 = oaspec@util@string_extra:line(
        _pipe@4,
        <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                    "(json_string: String) -> Result("/utf8>>/binary,
                Gleam_type/binary>>/binary,
            ", json.DecodeError) {"/utf8>>
    ),
    _pipe@6 = oaspec@util@string_extra:indent(
        _pipe@5,
        1,
        <<<<"json.parse(json_string, "/utf8, Decoder_fn_name/binary>>/binary,
            "())"/utf8>>
    ),
    _pipe@7 = oaspec@util@string_extra:line(_pipe@6, <<"}"/utf8>>),
    oaspec@util@string_extra:blank_line(_pipe@7).

-file("src/oaspec/codegen/decoders.gleam", 1227).
?DOC(" Add a doc comment if description is present.\n").
-spec maybe_doc_comment(
    gleam@string_tree:string_tree(),
    gleam@option:option(binary())
) -> gleam@string_tree:string_tree().
maybe_doc_comment(Sb, Description) ->
    case Description of
        {some, Desc} ->
            _pipe = Sb,
            oaspec@util@string_extra:doc_comment(_pipe, Desc);

        none ->
            Sb
    end.

-file("src/oaspec/codegen/decoders.gleam", 681).
?DOC(" Generate decoder for a string enum schema.\n").
-spec generate_enum_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    binary(),
    gleam@option:option(binary()),
    list(binary())
) -> gleam@string_tree:string_tree().
generate_enum_decoder(
    Sb,
    Type_name,
    Fn_name,
    Decoder_fn_name,
    Description,
    Enum_values
) ->
    Sb@1 = maybe_doc_comment(Sb, Description),
    Sb@2 = begin
        _pipe = Sb@1,
        _pipe@1 = oaspec@util@string_extra:line(
            _pipe,
            <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                        "() -> decode.Decoder(types."/utf8>>/binary,
                    Type_name/binary>>/binary,
                ") {"/utf8>>
        ),
        _pipe@2 = oaspec@util@string_extra:indent(
            _pipe@1,
            1,
            <<"use value <- decode.then(decode.string)"/utf8>>
        ),
        oaspec@util@string_extra:indent(_pipe@2, 1, <<"case value {"/utf8>>)
    end,
    Deduped_variants = oaspec@openapi@dedup:dedup_enum_variants(Enum_values),
    Sb@4 = gleam@list:index_fold(
        Enum_values,
        Sb@2,
        fun(Sb@3, Value, Idx) ->
            Variant_suffix = list_at_or(
                Deduped_variants,
                Idx,
                oaspec@util@naming:to_pascal_case(Value)
            ),
            Variant = <<(oaspec@util@naming:schema_to_type_name(Type_name))/binary,
                Variant_suffix/binary>>,
            _pipe@3 = Sb@3,
            oaspec@util@string_extra:indent(
                _pipe@3,
                2,
                <<<<<<<<"\""/utf8, Value/binary>>/binary,
                            "\" -> decode.success(types."/utf8>>/binary,
                        Variant/binary>>/binary,
                    ")"/utf8>>
            )
        end
    ),
    First_variant_suffix = list_at_or(Deduped_variants, 0, case Enum_values of
            [First | _] ->
                oaspec@util@naming:to_pascal_case(First);

            [] ->
                <<"Unknown"/utf8>>
        end),
    _pipe@4 = Sb@4,
    _pipe@5 = oaspec@util@string_extra:indent(
        _pipe@4,
        2,
        <<<<<<<<<<"_ -> decode.failure(types."/utf8,
                            (oaspec@util@naming:schema_to_type_name(Type_name))/binary>>/binary,
                        First_variant_suffix/binary>>/binary,
                    ", \""/utf8>>/binary,
                Type_name/binary>>/binary,
            ": unknown variant \" <> value)"/utf8>>
    ),
    _pipe@6 = oaspec@util@string_extra:indent(_pipe@5, 1, <<"}"/utf8>>),
    _pipe@7 = oaspec@util@string_extra:line(_pipe@6, <<"}"/utf8>>),
    _pipe@8 = oaspec@util@string_extra:blank_line(_pipe@7),
    _pipe@9 = oaspec@util@string_extra:line(
        _pipe@8,
        <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                    "(json_string: String) -> Result(types."/utf8>>/binary,
                Type_name/binary>>/binary,
            ", json.DecodeError) {"/utf8>>
    ),
    _pipe@10 = oaspec@util@string_extra:indent(
        _pipe@9,
        1,
        <<<<"json.parse(json_string, "/utf8, Decoder_fn_name/binary>>/binary,
            "())"/utf8>>
    ),
    _pipe@11 = oaspec@util@string_extra:line(_pipe@10, <<"}"/utf8>>),
    oaspec@util@string_extra:blank_line(_pipe@11).

-file("src/oaspec/codegen/decoders.gleam", 748).
?DOC(" Generate decoder for an anyOf (inclusive union) schema.\n").
-spec generate_anyof_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    binary(),
    gleam@option:option(binary()),
    list(oaspec@openapi@schema:schema_ref())
) -> gleam@string_tree:string_tree().
generate_anyof_decoder(
    Sb,
    Type_name,
    Fn_name,
    Decoder_fn_name,
    Description,
    Schemas
) ->
    Sb@1 = maybe_doc_comment(Sb, Description),
    Variant_fields = gleam@list:map(Schemas, fun(S_ref) -> case S_ref of
                {reference, _, Ref_name} ->
                    Field_name = oaspec@util@naming:to_snake_case(Ref_name),
                    Decoder_name = <<<<"decode_"/utf8,
                            (oaspec@util@naming:to_snake_case(Ref_name))/binary>>/binary,
                        "_decoder"/utf8>>,
                    {Field_name, Decoder_name, Ref_name};

                {inline, _} ->
                    {<<"unknown"/utf8>>,
                        <<"decode.string"/utf8>>,
                        <<"Unknown"/utf8>>}
            end end),
    Sb@2 = begin
        _pipe = Sb@1,
        oaspec@util@string_extra:line(
            _pipe,
            <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                        "() -> decode.Decoder(types."/utf8>>/binary,
                    Type_name/binary>>/binary,
                ") {"/utf8>>
        )
    end,
    Sb@4 = gleam@list:fold(
        Variant_fields,
        Sb@2,
        fun(Sb@3, Field) ->
            {Field_name@1, Decoder_name@1, _} = Field,
            _pipe@1 = Sb@3,
            oaspec@util@string_extra:indent(
                _pipe@1,
                1,
                <<<<<<<<"use "/utf8, Field_name@1/binary>>/binary,
                            " <- decode.then(decode.one_of("/utf8>>/binary,
                        Decoder_name@1/binary>>/binary,
                    "() |> decode.map(option.Some), or: [decode.success(option.None)]))"/utf8>>
            )
        end
    ),
    Field_assignments = gleam@list:map(
        Variant_fields,
        fun(F) ->
            {Field_name@2, _, _} = F,
            <<<<Field_name@2/binary, ": "/utf8>>/binary, Field_name@2/binary>>
        end
    ),
    _pipe@2 = Sb@4,
    _pipe@3 = oaspec@util@string_extra:indent(
        _pipe@2,
        1,
        <<<<<<<<"decode.success(types."/utf8, Type_name/binary>>/binary,
                    "("/utf8>>/binary,
                (gleam@string:join(Field_assignments, <<", "/utf8>>))/binary>>/binary,
            "))"/utf8>>
    ),
    _pipe@4 = oaspec@util@string_extra:line(_pipe@3, <<"}"/utf8>>),
    _pipe@5 = oaspec@util@string_extra:blank_line(_pipe@4),
    _pipe@6 = oaspec@util@string_extra:line(
        _pipe@5,
        <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                    "(json_string: String) -> Result(types."/utf8>>/binary,
                Type_name/binary>>/binary,
            ", json.DecodeError) {"/utf8>>
    ),
    _pipe@7 = oaspec@util@string_extra:indent(
        _pipe@6,
        1,
        <<<<"json.parse(json_string, "/utf8, Decoder_fn_name/binary>>/binary,
            "())"/utf8>>
    ),
    _pipe@8 = oaspec@util@string_extra:line(_pipe@7, <<"}"/utf8>>),
    oaspec@util@string_extra:blank_line(_pipe@8).

-file("src/oaspec/codegen/decoders.gleam", 897).
?DOC(
    " Generate decoder for oneOf/anyOf union types.\n"
    " With discriminator: decode based on discriminator field value.\n"
    " Without discriminator: try each variant decoder in order.\n"
).
-spec generate_oneof_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    binary(),
    binary(),
    gleam@option:option(binary()),
    list(oaspec@openapi@schema:schema_ref()),
    gleam@option:option(oaspec@openapi@schema:discriminator()),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_oneof_decoder(
    Sb,
    _,
    Type_name,
    Fn_name,
    Decoder_fn_name,
    Description,
    Schemas,
    Discriminator,
    _
) ->
    All_refs = gleam@list:all(Schemas, fun(S) -> case S of
                {reference, _, _} ->
                    true;

                _ ->
                    false
            end end),
    case All_refs of
        false ->
            Sb;

        true ->
            Sb@1 = maybe_doc_comment(Sb, Description),
            case Discriminator of
                {some, Disc} ->
                    Sb@2 = begin
                        _pipe = Sb@1,
                        _pipe@1 = oaspec@util@string_extra:line(
                            _pipe,
                            <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                                        "() -> decode.Decoder(types."/utf8>>/binary,
                                    Type_name/binary>>/binary,
                                ") {"/utf8>>
                        ),
                        _pipe@2 = oaspec@util@string_extra:indent(
                            _pipe@1,
                            1,
                            <<<<"use disc_value <- decode.field(\""/utf8,
                                    (erlang:element(2, Disc))/binary>>/binary,
                                "\", decode.string)"/utf8>>
                        ),
                        oaspec@util@string_extra:indent(
                            _pipe@2,
                            1,
                            <<"case disc_value {"/utf8>>
                        )
                    end,
                    Sb@4 = gleam@list:fold(
                        Schemas,
                        Sb@2,
                        fun(Sb@3, S_ref) -> case S_ref of
                                {reference, Ref, Name} ->
                                    Ref_name = Name,
                                    Variant_type = oaspec@util@naming:schema_to_type_name(
                                        Ref_name
                                    ),
                                    Variant_name = <<Type_name/binary,
                                        Variant_type/binary>>,
                                    Variant_decoder = <<(oaspec@util@naming:to_snake_case(
                                            Ref_name
                                        ))/binary,
                                        "_decoder()"/utf8>>,
                                    Disc_value = get_discriminator_value(
                                        Disc,
                                        Ref,
                                        Ref_name
                                    ),
                                    _pipe@3 = Sb@3,
                                    _pipe@4 = oaspec@util@string_extra:indent(
                                        _pipe@3,
                                        2,
                                        <<<<"\""/utf8, Disc_value/binary>>/binary,
                                            "\" -> {"/utf8>>
                                    ),
                                    _pipe@5 = oaspec@util@string_extra:indent(
                                        _pipe@4,
                                        3,
                                        <<<<"use inner <- decode.then("/utf8,
                                                Variant_decoder/binary>>/binary,
                                            ")"/utf8>>
                                    ),
                                    _pipe@6 = oaspec@util@string_extra:indent(
                                        _pipe@5,
                                        3,
                                        <<<<"decode.success(types."/utf8,
                                                Variant_name/binary>>/binary,
                                            "(inner))"/utf8>>
                                    ),
                                    oaspec@util@string_extra:indent(
                                        _pipe@6,
                                        2,
                                        <<"}"/utf8>>
                                    );

                                _ ->
                                    Sb@3
                            end end
                    ),
                    First_ref_decoder = case Schemas of
                        [{reference, _, Name@1} | _] ->
                            Ref_name@1 = Name@1,
                            <<(oaspec@util@naming:to_snake_case(Ref_name@1))/binary,
                                "_decoder()"/utf8>>;

                        _ ->
                            <<"decode.string"/utf8>>
                    end,
                    First_variant_name = case Schemas of
                        [{reference, _, Name@2} | _] ->
                            Ref_name@2 = Name@2,
                            Variant_type@1 = oaspec@util@naming:schema_to_type_name(
                                Ref_name@2
                            ),
                            <<<<"types."/utf8, Type_name/binary>>/binary,
                                Variant_type@1/binary>>;

                        _ ->
                            <<"types."/utf8, Type_name/binary>>
                    end,
                    Valid_disc_values = begin
                        _pipe@7 = Schemas,
                        _pipe@8 = gleam@list:filter_map(
                            _pipe@7,
                            fun(S_ref@1) -> case S_ref@1 of
                                    {reference, Ref@1, Name@3} ->
                                        {ok,
                                            get_discriminator_value(
                                                Disc,
                                                Ref@1,
                                                Name@3
                                            )};

                                    _ ->
                                        {error, nil}
                                end end
                        ),
                        _pipe@9 = gleam@list:sort(
                            _pipe@8,
                            fun gleam@string:compare/2
                        ),
                        gleam@string:join(_pipe@9, <<"|"/utf8>>)
                    end,
                    Sb@5 = begin
                        _pipe@10 = Sb@4,
                        _pipe@11 = oaspec@util@string_extra:indent(
                            _pipe@10,
                            2,
                            <<"_ -> {"/utf8>>
                        ),
                        _pipe@12 = oaspec@util@string_extra:indent(
                            _pipe@11,
                            3,
                            <<<<<<<<"use _ <- decode.then(decode.failure(Nil, \""/utf8,
                                            Type_name/binary>>/binary,
                                        ": unknown discriminator '\" <> disc_value <> \"' (expected "/utf8>>/binary,
                                    Valid_disc_values/binary>>/binary,
                                ")\"))"/utf8>>
                        ),
                        _pipe@13 = oaspec@util@string_extra:indent(
                            _pipe@12,
                            3,
                            <<<<"use v <- decode.then("/utf8,
                                    First_ref_decoder/binary>>/binary,
                                ")"/utf8>>
                        ),
                        _pipe@14 = oaspec@util@string_extra:indent(
                            _pipe@13,
                            3,
                            <<<<<<<<"decode.failure("/utf8,
                                            First_variant_name/binary>>/binary,
                                        "(v), \""/utf8>>/binary,
                                    Type_name/binary>>/binary,
                                "\")"/utf8>>
                        ),
                        _pipe@15 = oaspec@util@string_extra:indent(
                            _pipe@14,
                            2,
                            <<"}"/utf8>>
                        ),
                        _pipe@16 = oaspec@util@string_extra:indent(
                            _pipe@15,
                            1,
                            <<"}"/utf8>>
                        ),
                        _pipe@17 = oaspec@util@string_extra:line(
                            _pipe@16,
                            <<"}"/utf8>>
                        ),
                        oaspec@util@string_extra:blank_line(_pipe@17)
                    end,
                    _pipe@18 = Sb@5,
                    _pipe@19 = oaspec@util@string_extra:line(
                        _pipe@18,
                        <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                                    "(json_string: String) -> Result(types."/utf8>>/binary,
                                Type_name/binary>>/binary,
                            ", json.DecodeError) {"/utf8>>
                    ),
                    _pipe@20 = oaspec@util@string_extra:indent(
                        _pipe@19,
                        1,
                        <<<<"json.parse(json_string, "/utf8,
                                Decoder_fn_name/binary>>/binary,
                            "())"/utf8>>
                    ),
                    _pipe@21 = oaspec@util@string_extra:line(
                        _pipe@20,
                        <<"}"/utf8>>
                    ),
                    oaspec@util@string_extra:blank_line(_pipe@21);

                none ->
                    Ref_variants = gleam@list:filter_map(
                        Schemas,
                        fun(S_ref@2) -> case S_ref@2 of
                                {reference, _, Name@4} ->
                                    Ref_name@3 = Name@4,
                                    {ok, Ref_name@3};

                                _ ->
                                    {error, nil}
                            end end
                    ),
                    Sb@6 = begin
                        _pipe@22 = Sb@1,
                        oaspec@util@string_extra:line(
                            _pipe@22,
                            <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                                        "() -> decode.Decoder(types."/utf8>>/binary,
                                    Type_name/binary>>/binary,
                                ") {"/utf8>>
                        )
                    end,
                    Sb@10 = case Ref_variants of
                        [] ->
                            _pipe@23 = Sb@6,
                            oaspec@util@string_extra:indent(
                                _pipe@23,
                                1,
                                <<<<<<<<"decode.failure(types."/utf8,
                                                Type_name/binary>>/binary,
                                            ", \""/utf8>>/binary,
                                        Type_name/binary>>/binary,
                                    "\")"/utf8>>
                            );

                        [First | Rest] ->
                            First_variant_type = oaspec@util@naming:schema_to_type_name(
                                First
                            ),
                            First_decoder = <<(oaspec@util@naming:to_snake_case(
                                    First
                                ))/binary,
                                "_decoder()"/utf8>>,
                            Sb@7 = begin
                                _pipe@24 = Sb@6,
                                oaspec@util@string_extra:indent(
                                    _pipe@24,
                                    1,
                                    <<<<<<<<<<"decode.one_of("/utf8,
                                                        First_decoder/binary>>/binary,
                                                    " |> decode.map(types."/utf8>>/binary,
                                                Type_name/binary>>/binary,
                                            First_variant_type/binary>>/binary,
                                        "), ["/utf8>>
                                )
                            end,
                            Sb@9 = gleam@list:fold(
                                Rest,
                                Sb@7,
                                fun(Sb@8, Ref_name@4) ->
                                    Variant_type@2 = oaspec@util@naming:schema_to_type_name(
                                        Ref_name@4
                                    ),
                                    Decoder = <<(oaspec@util@naming:to_snake_case(
                                            Ref_name@4
                                        ))/binary,
                                        "_decoder()"/utf8>>,
                                    _pipe@25 = Sb@8,
                                    oaspec@util@string_extra:indent(
                                        _pipe@25,
                                        2,
                                        <<<<<<<<Decoder/binary,
                                                        " |> decode.map(types."/utf8>>/binary,
                                                    Type_name/binary>>/binary,
                                                Variant_type@2/binary>>/binary,
                                            "),"/utf8>>
                                    )
                                end
                            ),
                            _pipe@26 = Sb@9,
                            oaspec@util@string_extra:indent(
                                _pipe@26,
                                1,
                                <<"])"/utf8>>
                            )
                    end,
                    Sb@11 = begin
                        _pipe@27 = Sb@10,
                        _pipe@28 = oaspec@util@string_extra:line(
                            _pipe@27,
                            <<"}"/utf8>>
                        ),
                        oaspec@util@string_extra:blank_line(_pipe@28)
                    end,
                    _pipe@29 = Sb@11,
                    _pipe@30 = oaspec@util@string_extra:line(
                        _pipe@29,
                        <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                                    "(json_string: String) -> Result(types."/utf8>>/binary,
                                Type_name/binary>>/binary,
                            ", json.DecodeError) {"/utf8>>
                    ),
                    _pipe@31 = oaspec@util@string_extra:indent(
                        _pipe@30,
                        1,
                        <<<<"json.parse(json_string, "/utf8,
                                Decoder_fn_name/binary>>/binary,
                            "())"/utf8>>
                    ),
                    _pipe@32 = oaspec@util@string_extra:line(
                        _pipe@31,
                        <<"}"/utf8>>
                    ),
                    oaspec@util@string_extra:blank_line(_pipe@32)
            end
    end.

-file("src/oaspec/codegen/decoders.gleam", 1277).
?DOC(
    " Escape a spec-derived string so it can be safely interpolated\n"
    " inside a generated Gleam string literal. Mirrors the helper in\n"
    " `encoders.gleam` — extracted here to keep the decoder module\n"
    " self-contained for issue #309.\n"
).
-spec escape_for_string_literal(binary()) -> binary().
escape_for_string_literal(Value) ->
    _pipe = Value,
    _pipe@1 = gleam@string:replace(_pipe, <<"\\"/utf8>>, <<"\\\\"/utf8>>),
    gleam@string:replace(_pipe@1, <<"\""/utf8>>, <<"\\\""/utf8>>).

-file("src/oaspec/codegen/decoders.gleam", 1246).
?DOC(
    " Emit the decoder snippet for a constant (issue #309) field.\n"
    "\n"
    " The wire value is required and fully determined at codegen time\n"
    " (an inline `enum: [<single>]`). The decoder reads it as a string\n"
    " and chains a `decode.then` that fails fast on any other value.\n"
    " `_` discards the binding because the surrounding record has no\n"
    " slot for the field. Failing on mismatch keeps the discriminator\n"
    " contract honest — silently accepting `kind: \"media\"` where only\n"
    " `kind: \"text\"` is legal would defeat the purpose of the enum.\n"
).
-spec emit_constant_field_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary()
) -> gleam@string_tree:string_tree().
emit_constant_field_decoder(Sb, Prop_name, Constant_value) ->
    Escaped = escape_for_string_literal(Constant_value),
    _pipe = Sb,
    _pipe@1 = oaspec@util@string_extra:indent(
        _pipe,
        1,
        <<<<"use _ <- decode.field(\""/utf8, Prop_name/binary>>/binary,
            "\", decode.then(decode.string, fn(constant_value) {"/utf8>>
    ),
    _pipe@2 = oaspec@util@string_extra:indent(
        _pipe@1,
        2,
        <<"case constant_value {"/utf8>>
    ),
    _pipe@3 = oaspec@util@string_extra:indent(
        _pipe@2,
        3,
        <<<<"\""/utf8, Escaped/binary>>/binary,
            "\" -> decode.success(Nil)"/utf8>>
    ),
    _pipe@4 = oaspec@util@string_extra:indent(
        _pipe@3,
        3,
        <<<<<<<<"other -> decode.failure(Nil, \"expected "/utf8,
                        Prop_name/binary>>/binary,
                    "=\\\""/utf8>>/binary,
                Escaped/binary>>/binary,
            "\\\", got \\\"\" <> other <> \"\\\"\")"/utf8>>
    ),
    _pipe@5 = oaspec@util@string_extra:indent(_pipe@4, 2, <<"}"/utf8>>),
    oaspec@util@string_extra:indent(_pipe@5, 1, <<"}))"/utf8>>).

-file("src/oaspec/codegen/decoders.gleam", 421).
?DOC(" Generate decoder for an ObjectSchema (properties, required, additionalProperties).\n").
-spec generate_object_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    binary(),
    binary(),
    gleam@option:option(binary()),
    gleam@dict:dict(binary(), oaspec@openapi@schema:schema_ref()),
    list(binary()),
    oaspec@openapi@schema:additional_properties(),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_object_decoder(
    Sb,
    Name,
    Type_name,
    Fn_name,
    Decoder_fn_name,
    Description,
    Properties,
    Required,
    Additional_properties,
    Ctx
) ->
    Sb@1 = maybe_doc_comment(Sb, Description),
    Sb@2 = begin
        _pipe = Sb@1,
        oaspec@util@string_extra:line(
            _pipe,
            <<<<<<<<"pub fn "/utf8, Decoder_fn_name/binary>>/binary,
                        "() -> decode.Decoder(types."/utf8>>/binary,
                    Type_name/binary>>/binary,
                ") {"/utf8>>
        )
    end,
    Props = oaspec@codegen@ir_build:sorted_entries(Properties),
    Deduped_names = oaspec@openapi@dedup:dedup_property_names(
        gleam@list:map(Props, fun(E) -> erlang:element(1, E) end)
    ),
    Sb@4 = gleam@list:index_fold(
        Props,
        Sb@2,
        fun(Sb@3, Entry, Idx) ->
            {Prop_name, Prop_ref} = Entry,
            Field_name = list_at_or(
                Deduped_names,
                Idx,
                oaspec@util@naming:to_snake_case(Prop_name)
            ),
            Is_write_only = oaspec@codegen@types:schema_ref_is_write_only(
                Prop_ref,
                Ctx
            ),
            Is_required = gleam@list:contains(Required, Prop_name) andalso not Is_write_only,
            Field_decoder = schema_ref_to_decoder(Prop_ref, Name, Prop_name),
            Is_nullable_schema = schema_ref_is_nullable(Prop_ref, Ctx),
            Effective_decoder = case Is_nullable_schema of
                true ->
                    <<<<"decode.optional("/utf8, Field_decoder/binary>>/binary,
                        ")"/utf8>>;

                false ->
                    Field_decoder
            end,
            case oaspec@codegen@schema_utils:constant_property_value(
                Prop_ref,
                Prop_name,
                Required
            ) of
                {some, Constant_value} ->
                    _pipe@1 = Sb@3,
                    emit_constant_field_decoder(
                        _pipe@1,
                        Prop_name,
                        Constant_value
                    );

                none ->
                    case Is_required of
                        true ->
                            _pipe@2 = Sb@3,
                            oaspec@util@string_extra:indent(
                                _pipe@2,
                                1,
                                <<<<<<<<<<<<"use "/utf8, Field_name/binary>>/binary,
                                                    " <- decode.field(\""/utf8>>/binary,
                                                Prop_name/binary>>/binary,
                                            "\", "/utf8>>/binary,
                                        Effective_decoder/binary>>/binary,
                                    ")"/utf8>>
                            );

                        false ->
                            case Is_nullable_schema of
                                true ->
                                    _pipe@3 = Sb@3,
                                    oaspec@util@string_extra:indent(
                                        _pipe@3,
                                        1,
                                        <<<<<<<<<<<<"use "/utf8,
                                                                Field_name/binary>>/binary,
                                                            " <- decode.optional_field(\""/utf8>>/binary,
                                                        Prop_name/binary>>/binary,
                                                    "\", option.None, "/utf8>>/binary,
                                                Effective_decoder/binary>>/binary,
                                            ")"/utf8>>
                                    );

                                false ->
                                    _pipe@4 = Sb@3,
                                    oaspec@util@string_extra:indent(
                                        _pipe@4,
                                        1,
                                        <<<<<<<<<<<<"use "/utf8,
                                                                Field_name/binary>>/binary,
                                                            " <- decode.optional_field(\""/utf8>>/binary,
                                                        Prop_name/binary>>/binary,
                                                    "\", option.None, decode.optional("/utf8>>/binary,
                                                Field_decoder/binary>>/binary,
                                            "))"/utf8>>
                                    )
                            end
                    end
            end
        end
    ),
    Known_keys_expr = case gleam@list:is_empty(Props) of
        true ->
            <<"[]"/utf8>>;

        false ->
            <<<<"["/utf8,
                    (oaspec@util@string_extra:join_with(
                        gleam@list:map(
                            Props,
                            fun(Entry@1) ->
                                {Prop_name@1, _} = Entry@1,
                                <<<<"\""/utf8, Prop_name@1/binary>>/binary,
                                    "\""/utf8>>
                            end
                        ),
                        <<", "/utf8>>
                    ))/binary>>/binary,
                "]"/utf8>>
    end,
    Sb@5 = case Additional_properties of
        {typed, Ap_ref} ->
            Inner_decoder = schema_ref_to_decoder(
                Ap_ref,
                Name,
                <<"additional_properties"/utf8>>
            ),
            _pipe@5 = Sb@4,
            _pipe@6 = oaspec@util@string_extra:indent(
                _pipe@5,
                1,
                <<"use all_props <- decode.then(decode.dict(decode.string, decode.new_primitive_decoder(\"Dynamic\", fn(x) { Ok(x) })))"/utf8>>
            ),
            _pipe@7 = oaspec@util@string_extra:indent(
                _pipe@6,
                1,
                <<<<"let extra_props = dict.drop(all_props, "/utf8,
                        Known_keys_expr/binary>>/binary,
                    ")"/utf8>>
            ),
            _pipe@8 = oaspec@util@string_extra:indent(
                _pipe@7,
                1,
                <<"let additional_properties_result = dict.fold(extra_props, Ok(dict.new()), fn(acc, k, v) {"/utf8>>
            ),
            _pipe@9 = oaspec@util@string_extra:indent(
                _pipe@8,
                2,
                <<"case acc {"/utf8>>
            ),
            _pipe@10 = oaspec@util@string_extra:indent(
                _pipe@9,
                3,
                <<"Ok(decoded_acc) ->"/utf8>>
            ),
            _pipe@11 = oaspec@util@string_extra:indent(
                _pipe@10,
                4,
                <<<<"case decode.run(v, "/utf8, Inner_decoder/binary>>/binary,
                    ") {"/utf8>>
            ),
            _pipe@12 = oaspec@util@string_extra:indent(
                _pipe@11,
                5,
                <<"Ok(decoded) -> Ok(dict.insert(decoded_acc, k, decoded))"/utf8>>
            ),
            _pipe@13 = oaspec@util@string_extra:indent(
                _pipe@12,
                5,
                <<"Error(_) -> Error(Nil)"/utf8>>
            ),
            _pipe@14 = oaspec@util@string_extra:indent(
                _pipe@13,
                4,
                <<"}"/utf8>>
            ),
            _pipe@15 = oaspec@util@string_extra:indent(
                _pipe@14,
                3,
                <<"Error(_) -> Error(Nil)"/utf8>>
            ),
            _pipe@16 = oaspec@util@string_extra:indent(
                _pipe@15,
                2,
                <<"}"/utf8>>
            ),
            _pipe@17 = oaspec@util@string_extra:indent(
                _pipe@16,
                1,
                <<"})"/utf8>>
            ),
            _pipe@18 = oaspec@util@string_extra:indent(
                _pipe@17,
                1,
                <<"use additional_properties <- decode.then(case additional_properties_result {"/utf8>>
            ),
            _pipe@19 = oaspec@util@string_extra:indent(
                _pipe@18,
                2,
                <<"Ok(decoded) -> decode.success(decoded)"/utf8>>
            ),
            _pipe@20 = oaspec@util@string_extra:indent(
                _pipe@19,
                2,
                <<"Error(_) -> decode.failure(dict.new(), \"additionalProperties\")"/utf8>>
            ),
            oaspec@util@string_extra:indent(_pipe@20, 1, <<"})"/utf8>>);

        untyped ->
            _pipe@21 = Sb@4,
            _pipe@22 = oaspec@util@string_extra:indent(
                _pipe@21,
                1,
                <<"use all_props <- decode.then(decode.dict(decode.string, decode.new_primitive_decoder(\"Dynamic\", fn(x) { Ok(x) })))"/utf8>>
            ),
            oaspec@util@string_extra:indent(
                _pipe@22,
                1,
                <<<<"let additional_properties = dict.drop(all_props, "/utf8,
                        Known_keys_expr/binary>>/binary,
                    ")"/utf8>>
            );

        forbidden ->
            Sb@4;

        unspecified ->
            Sb@4
    end,
    Param_names = begin
        _pipe@23 = gleam@list:index_map(
            Props,
            fun(Entry@2, Idx@1) ->
                {Prop_name@2, Prop_ref@1} = Entry@2,
                Field_name@1 = list_at_or(
                    Deduped_names,
                    Idx@1,
                    oaspec@util@naming:to_snake_case(Prop_name@2)
                ),
                {Prop_name@2, Prop_ref@1, Field_name@1}
            end
        ),
        _pipe@24 = gleam@list:filter(
            _pipe@23,
            fun(Entry@3) ->
                {Prop_name@3, Prop_ref@2, _} = Entry@3,
                gleam@option:is_none(
                    oaspec@codegen@schema_utils:constant_property_value(
                        Prop_ref@2,
                        Prop_name@3,
                        Required
                    )
                )
            end
        ),
        gleam@list:map(
            _pipe@24,
            fun(Entry@4) ->
                {_, _, Field_name@2} = Entry@4,
                <<<<Field_name@2/binary, ": "/utf8>>/binary,
                    Field_name@2/binary>>
            end
        )
    end,
    Param_names@1 = case Additional_properties of
        {typed, _} ->
            lists:append(
                Param_names,
                [<<"additional_properties: additional_properties"/utf8>>]
            );

        untyped ->
            lists:append(
                Param_names,
                [<<"additional_properties: additional_properties"/utf8>>]
            );

        forbidden ->
            Param_names;

        unspecified ->
            Param_names
    end,
    Sb@6 = begin
        _pipe@25 = Sb@5,
        oaspec@util@string_extra:indent(
            _pipe@25,
            1,
            <<<<<<<<"decode.success(types."/utf8, Type_name/binary>>/binary,
                        "("/utf8>>/binary,
                    (oaspec@util@string_extra:join_with(
                        Param_names@1,
                        <<", "/utf8>>
                    ))/binary>>/binary,
                "))"/utf8>>
        )
    end,
    Sb@7 = begin
        _pipe@26 = Sb@6,
        _pipe@27 = oaspec@util@string_extra:line(_pipe@26, <<"}"/utf8>>),
        oaspec@util@string_extra:blank_line(_pipe@27)
    end,
    Sb@8 = begin
        _pipe@28 = Sb@7,
        _pipe@29 = oaspec@util@string_extra:line(
            _pipe@28,
            <<<<<<<<"pub fn "/utf8, Fn_name/binary>>/binary,
                        "(json_string: String) -> Result(types."/utf8>>/binary,
                    Type_name/binary>>/binary,
                ", json.DecodeError) {"/utf8>>
        ),
        _pipe@30 = oaspec@util@string_extra:indent(
            _pipe@29,
            1,
            <<<<"json.parse(json_string, "/utf8, Decoder_fn_name/binary>>/binary,
                "())"/utf8>>
        ),
        _pipe@31 = oaspec@util@string_extra:line(_pipe@30, <<"}"/utf8>>),
        oaspec@util@string_extra:blank_line(_pipe@31)
    end,
    List_fn_name = <<Fn_name/binary, "_list"/utf8>>,
    List_decoder_fn_name = <<Decoder_fn_name/binary, "_list"/utf8>>,
    _pipe@32 = Sb@8,
    _pipe@33 = oaspec@util@string_extra:line(
        _pipe@32,
        <<<<<<<<"pub fn "/utf8, List_decoder_fn_name/binary>>/binary,
                    "() -> decode.Decoder(List(types."/utf8>>/binary,
                Type_name/binary>>/binary,
            ")) {"/utf8>>
    ),
    _pipe@34 = oaspec@util@string_extra:indent(
        _pipe@33,
        1,
        <<<<"decode.list("/utf8, Decoder_fn_name/binary>>/binary, "())"/utf8>>
    ),
    _pipe@35 = oaspec@util@string_extra:line(_pipe@34, <<"}"/utf8>>),
    _pipe@36 = oaspec@util@string_extra:blank_line(_pipe@35),
    _pipe@37 = oaspec@util@string_extra:line(
        _pipe@36,
        <<<<<<<<"pub fn "/utf8, List_fn_name/binary>>/binary,
                    "(json_string: String) -> Result(List(types."/utf8>>/binary,
                Type_name/binary>>/binary,
            "), json.DecodeError) {"/utf8>>
    ),
    _pipe@38 = oaspec@util@string_extra:indent(
        _pipe@37,
        1,
        <<<<"json.parse(json_string, "/utf8, List_decoder_fn_name/binary>>/binary,
            "())"/utf8>>
    ),
    _pipe@39 = oaspec@util@string_extra:line(_pipe@38, <<"}"/utf8>>),
    oaspec@util@string_extra:blank_line(_pipe@39).

-file("src/oaspec/codegen/decoders.gleam", 279).
?DOC(" Generate decoder functions for a schema.\n").
-spec generate_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    oaspec@openapi@schema:schema_ref(),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_decoder(Sb, Name, Schema_ref, Ctx) ->
    Type_name = oaspec@util@naming:schema_to_type_name(Name),
    Fn_name = <<"decode_"/utf8,
        (oaspec@util@naming:to_snake_case(Name))/binary>>,
    Decoder_fn_name = <<(oaspec@util@naming:to_snake_case(Name))/binary,
        "_decoder"/utf8>>,
    case Schema_ref of
        {inline,
            {object_schema,
                Metadata,
                Properties,
                Required,
                Additional_properties,
                _,
                _}} ->
            generate_object_decoder(
                Sb,
                Name,
                Type_name,
                Fn_name,
                Decoder_fn_name,
                erlang:element(2, Metadata),
                Properties,
                Required,
                Additional_properties,
                Ctx
            );

        {inline, {string_schema, Metadata@1, _, Enum_values, _, _, _}} when Enum_values =/= [] ->
            generate_enum_decoder(
                Sb,
                Type_name,
                Fn_name,
                Decoder_fn_name,
                erlang:element(2, Metadata@1),
                Enum_values
            );

        {inline, {all_of_schema, Metadata@2, Schemas}} ->
            Merged = oaspec@codegen@types:merge_allof_schemas(Schemas, Ctx),
            Merged_schema = {inline,
                {object_schema,
                    Metadata@2,
                    erlang:element(2, Merged),
                    erlang:element(3, Merged),
                    erlang:element(4, Merged),
                    none,
                    none}},
            generate_decoder(Sb, Name, Merged_schema, Ctx);

        {inline, {one_of_schema, Metadata@3, Schemas@1, Discriminator}} ->
            generate_oneof_decoder(
                Sb,
                Name,
                Type_name,
                Fn_name,
                Decoder_fn_name,
                erlang:element(2, Metadata@3),
                Schemas@1,
                Discriminator,
                Ctx
            );

        {inline, {any_of_schema, Metadata@4, Schemas@2, _}} ->
            generate_anyof_decoder(
                Sb,
                Type_name,
                Fn_name,
                Decoder_fn_name,
                erlang:element(2, Metadata@4),
                Schemas@2
            );

        {inline, {string_schema, Metadata@5, _, [], _, _, _}} ->
            {Gleam_type, Decoder_expr} = case erlang:element(3, Metadata@5) of
                true ->
                    {<<"Option(String)"/utf8>>,
                        <<"decode.optional(decode.string)"/utf8>>};

                false ->
                    {<<"String"/utf8>>, <<"decode.string"/utf8>>}
            end,
            generate_primitive_decoder(
                Sb,
                Fn_name,
                Decoder_fn_name,
                Gleam_type,
                Decoder_expr
            );

        {inline, {integer_schema, Metadata@6, _, _, _, _, _, _}} ->
            {Gleam_type@1, Decoder_expr@1} = case erlang:element(3, Metadata@6) of
                true ->
                    {<<"Option(Int)"/utf8>>,
                        <<"decode.optional(decode.int)"/utf8>>};

                false ->
                    {<<"Int"/utf8>>, <<"decode.int"/utf8>>}
            end,
            generate_primitive_decoder(
                Sb,
                Fn_name,
                Decoder_fn_name,
                Gleam_type@1,
                Decoder_expr@1
            );

        {inline, {number_schema, Metadata@7, _, _, _, _, _, _}} ->
            {Gleam_type@2, Decoder_expr@2} = case erlang:element(3, Metadata@7) of
                true ->
                    {<<"Option(Float)"/utf8>>,
                        <<"decode.optional(decode.float)"/utf8>>};

                false ->
                    {<<"Float"/utf8>>, <<"decode.float"/utf8>>}
            end,
            generate_primitive_decoder(
                Sb,
                Fn_name,
                Decoder_fn_name,
                Gleam_type@2,
                Decoder_expr@2
            );

        {inline, {boolean_schema, Metadata@8}} ->
            {Gleam_type@3, Decoder_expr@3} = case erlang:element(3, Metadata@8) of
                true ->
                    {<<"Option(Bool)"/utf8>>,
                        <<"decode.optional(decode.bool)"/utf8>>};

                false ->
                    {<<"Bool"/utf8>>, <<"decode.bool"/utf8>>}
            end,
            generate_primitive_decoder(
                Sb,
                Fn_name,
                Decoder_fn_name,
                Gleam_type@3,
                Decoder_expr@3
            );

        {inline, {array_schema, _, Items, _, _, _}} ->
            generate_array_decoder(
                Sb,
                Name,
                Fn_name,
                Decoder_fn_name,
                Items,
                Ctx
            );

        _ ->
            Sb
    end.

-file("src/oaspec/codegen/decoders.gleam", 225).
?DOC(" Generate decoder for an anonymous schema with a composed name.\n").
-spec generate_anonymous_schema_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    binary(),
    oaspec@openapi@schema:schema_object(),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_anonymous_schema_decoder(Sb, Op_id, Suffix, Schema_obj, Ctx) ->
    Name = <<<<(oaspec@util@naming:to_snake_case(Op_id))/binary, "_"/utf8>>/binary,
        (oaspec@util@naming:to_snake_case(Suffix))/binary>>,
    Schema_ref = {inline, Schema_obj},
    generate_decoder(Sb, Name, Schema_ref, Ctx).

-file("src/oaspec/codegen/decoders.gleam", 151).
?DOC(" Generate decoders for inline response schemas.\n").
-spec generate_anonymous_response_decoders(
    gleam@string_tree:string_tree(),
    binary(),
    oaspec@openapi@spec:operation(oaspec@openapi@spec:resolved()),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_anonymous_response_decoders(Sb, Op_id, Operation, Ctx) ->
    Responses = oaspec@util@http:sort_response_entries(
        maps:to_list(erlang:element(8, Operation))
    ),
    gleam@list:fold(
        Responses,
        Sb,
        fun(Sb@1, Entry) ->
            {Status_code, Ref_or_response} = Entry,
            case Ref_or_response of
                {value, Response} ->
                    Content_entries = oaspec@codegen@ir_build:sorted_entries(
                        erlang:element(3, Response)
                    ),
                    case Content_entries of
                        [{_, Media_type} | _] ->
                            case erlang:element(2, Media_type) of
                                {some, {inline, Schema_obj}} ->
                                    Filtered_schema = oaspec@codegen@types:filter_write_only_properties(
                                        Schema_obj,
                                        Ctx
                                    ),
                                    Suffix = <<"Response"/utf8,
                                        (oaspec@util@http:status_code_suffix(
                                            Status_code
                                        ))/binary>>,
                                    generate_anonymous_schema_decoder(
                                        Sb@1,
                                        Op_id,
                                        Suffix,
                                        Filtered_schema,
                                        Ctx
                                    );

                                _ ->
                                    Sb@1
                            end;

                        _ ->
                            Sb@1
                    end;

                {ref, _} ->
                    Sb@1
            end
        end
    ).

-file("src/oaspec/codegen/decoders.gleam", 190).
?DOC(" Generate decoder for an inline requestBody schema.\n").
-spec generate_anonymous_request_body_decoder(
    gleam@string_tree:string_tree(),
    binary(),
    oaspec@openapi@spec:operation(oaspec@openapi@spec:resolved()),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_anonymous_request_body_decoder(Sb, Op_id, Operation, Ctx) ->
    case erlang:element(7, Operation) of
        {some, {value, Rb}} ->
            Content_entries = oaspec@codegen@ir_build:sorted_entries(
                erlang:element(3, Rb)
            ),
            case Content_entries of
                [{_, Media_type} | _] ->
                    case erlang:element(2, Media_type) of
                        {some, {inline, Schema_obj}} ->
                            Filtered_schema = oaspec@codegen@types:filter_read_only_properties(
                                Schema_obj,
                                Ctx
                            ),
                            generate_anonymous_schema_decoder(
                                Sb,
                                Op_id,
                                <<"RequestBody"/utf8>>,
                                Filtered_schema,
                                Ctx
                            );

                        _ ->
                            Sb
                    end;

                _ ->
                    Sb
            end;

        {some, {ref, _}} ->
            Sb;

        none ->
            Sb
    end.

-file("src/oaspec/codegen/decoders.gleam", 138).
?DOC(" Generate decoders for anonymous inline schemas (response/requestBody).\n").
-spec generate_anonymous_decoders(
    gleam@string_tree:string_tree(),
    oaspec@codegen@context:context(),
    list({binary(),
        oaspec@openapi@spec:operation(oaspec@openapi@spec:resolved()),
        binary(),
        oaspec@openapi@spec:http_method()})
) -> gleam@string_tree:string_tree().
generate_anonymous_decoders(Sb, Ctx, Operations) ->
    gleam@list:fold(
        Operations,
        Sb,
        fun(Sb@1, Op) ->
            {Op_id, Operation, _, _} = Op,
            Sb@2 = generate_anonymous_response_decoders(
                Sb@1,
                Op_id,
                Operation,
                Ctx
            ),
            generate_anonymous_request_body_decoder(Sb@2, Op_id, Operation, Ctx)
        end
    ).

-file("src/oaspec/codegen/decoders.gleam", 238).
?DOC(" Generate inline enum decoders found in object/allOf properties.\n").
-spec generate_inline_enum_decoders(
    gleam@string_tree:string_tree(),
    binary(),
    oaspec@openapi@schema:schema_ref(),
    oaspec@codegen@context:context()
) -> gleam@string_tree:string_tree().
generate_inline_enum_decoders(Sb, Parent_name, Schema_ref, Ctx) ->
    {Props, Required@1} = case Schema_ref of
        {inline, {object_schema, _, Properties, Required, _, _, _}} ->
            {oaspec@codegen@ir_build:sorted_entries(Properties), Required};

        {inline, {all_of_schema, _, Schemas}} ->
            Merged = oaspec@codegen@allof_merge:merge_allof_schemas(
                Schemas,
                Ctx
            ),
            {oaspec@codegen@ir_build:sorted_entries(erlang:element(2, Merged)),
                erlang:element(3, Merged)};

        _ ->
            {[], []}
    end,
    gleam@list:fold(
        Props,
        Sb,
        fun(Sb@1, Entry) ->
            {Prop_name, Prop_ref} = Entry,
            case oaspec@codegen@schema_utils:constant_property_value(
                Prop_ref,
                Prop_name,
                Required@1
            ) of
                {some, _} ->
                    Sb@1;

                none ->
                    case Prop_ref of
                        {inline, {string_schema, _, _, Enum_values, _, _, _}} when Enum_values =/= [] ->
                            Enum_name = <<(oaspec@util@naming:schema_to_type_name(
                                    Parent_name
                                ))/binary,
                                (oaspec@util@naming:schema_to_type_name(
                                    Prop_name
                                ))/binary>>,
                            generate_decoder(Sb@1, Enum_name, Prop_ref, Ctx);

                        _ ->
                            Sb@1
                    end
            end
        end
    ).

-file("src/oaspec/codegen/decoders.gleam", 48).
?DOC(" Generate JSON decoders for all component schemas and anonymous types.\n").
-spec generate_decoders(
    oaspec@codegen@context:context(),
    list({binary(),
        oaspec@openapi@spec:operation(oaspec@openapi@spec:resolved()),
        binary(),
        oaspec@openapi@spec:http_method()})
) -> binary().
generate_decoders(Ctx, Operations) ->
    Schemas = case erlang:element(5, oaspec@codegen@context:spec(Ctx)) of
        {some, Components} ->
            gleam@list:sort(
                maps:to_list(erlang:element(2, Components)),
                fun(A, B) ->
                    gleam@string:compare(
                        erlang:element(1, A),
                        erlang:element(1, B)
                    )
                end
            );

        none ->
            []
    end,
    Needs_option = gleam@list:any(
        Schemas,
        fun(Entry) ->
            {_, Schema_ref} = Entry,
            oaspec@codegen@types:schema_has_optional_fields(Schema_ref, Ctx)
        end
    ),
    Needs_dict = gleam@list:any(
        Schemas,
        fun(Entry@1) ->
            {_, Schema_ref@1} = Entry@1,
            oaspec@codegen@types:schema_has_additional_properties(
                Schema_ref@1,
                Ctx
            )
        end
    ),
    Needs_types = gleam@list:any(
        Schemas,
        fun(Entry@2) ->
            {_, Schema_ref@2} = Entry@2,
            case Schema_ref@2 of
                {inline, {object_schema, _, _, _, _, _, _}} ->
                    true;

                {inline, {all_of_schema, _, _}} ->
                    true;

                {inline, {one_of_schema, _, _, _}} ->
                    true;

                {inline, {any_of_schema, _, _, _}} ->
                    true;

                {inline, {string_schema, _, _, Enum_values, _, _, _}} when Enum_values =/= [] ->
                    true;

                _ ->
                    false
            end
        end
    ),
    Base_imports = case Needs_dict of
        true ->
            [<<"gleam/dict"/utf8>>,
                <<"gleam/dynamic/decode"/utf8>>,
                <<"gleam/json"/utf8>>];

        false ->
            [<<"gleam/dynamic/decode"/utf8>>, <<"gleam/json"/utf8>>]
    end,
    Base_imports@1 = case Needs_types of
        true ->
            lists:append(
                Base_imports,
                [<<(oaspec@config:package(oaspec@codegen@context:config(Ctx)))/binary,
                        "/types"/utf8>>]
            );

        false ->
            Base_imports
    end,
    Imports = case Needs_option of
        true ->
            lists:append(Base_imports@1, [<<"gleam/option"/utf8>>]);

        false ->
            Base_imports@1
    end,
    Sb = begin
        _pipe = oaspec@util@string_extra:file_header(<<"0.25.0"/utf8>>),
        oaspec@util@string_extra:imports(_pipe, Imports)
    end,
    Schemas@1 = case erlang:element(5, oaspec@codegen@context:spec(Ctx)) of
        {some, Components@1} ->
            _pipe@1 = gleam@list:sort(
                maps:to_list(erlang:element(2, Components@1)),
                fun(A@1, B@1) ->
                    gleam@string:compare(
                        erlang:element(1, A@1),
                        erlang:element(1, B@1)
                    )
                end
            ),
            gleam@list:filter(
                _pipe@1,
                fun(Entry@3) ->
                    not oaspec@codegen@ir_build:is_internal_schema(
                        erlang:element(2, Entry@3)
                    )
                end
            );

        none ->
            []
    end,
    Sb@2 = gleam@list:fold(
        Schemas@1,
        Sb,
        fun(Sb@1, Entry@4) ->
            {Name, Schema_ref@3} = Entry@4,
            generate_inline_enum_decoders(Sb@1, Name, Schema_ref@3, Ctx)
        end
    ),
    Sb@4 = gleam@list:fold(
        Schemas@1,
        Sb@2,
        fun(Sb@3, Entry@5) ->
            {Name@1, Schema_ref@4} = Entry@5,
            generate_decoder(Sb@3, Name@1, Schema_ref@4, Ctx)
        end
    ),
    Sb@5 = generate_anonymous_decoders(Sb@4, Ctx, Operations),
    oaspec@util@string_extra:to_string(Sb@5).

-file("src/oaspec/codegen/decoders.gleam", 29).
?DOC(
    " Generate the `decode.gleam` module for the resolved spec.\n"
    "\n"
    " Encoder generation lives in `src/oaspec/codegen/encoders.gleam`; see\n"
    " `generate.gleam::generate_shared` for how the two halves are combined.\n"
).
-spec generate(oaspec@codegen@context:context()) -> list(oaspec@codegen@context:generated_file()).
generate(Ctx) ->
    Operations = oaspec@openapi@operations:collect_operations(Ctx),
    Decode_content = generate_decoders(Ctx, Operations),
    [{generated_file,
            <<"decode.gleam"/utf8>>,
            Decode_content,
            shared_target,
            overwrite}].