-module(gilly@openapi@schema).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/gilly/openapi/schema.gleam").
-export([schema_decoder/0]).
-export_type([type_name/0, schema/0, base_schema/0, string_schema/0, integer_schema/0, array_schema/0, object_schema/0]).

-type type_name() :: string_type |
    integer_type |
    number_type |
    array_type |
    object_type |
    boolean_type.

-type schema() :: {ref, binary()} |
    {string, base_schema(), string_schema()} |
    {integer, base_schema(), integer_schema()} |
    {number, base_schema()} |
    {array, base_schema(), array_schema()} |
    {object, base_schema(), object_schema()} |
    {boolean, base_schema()}.

-type base_schema() :: {base_schema,
        type_name(),
        gleam@option:option(binary()),
        gleam@option:option(binary()),
        boolean()}.

-type string_schema() :: {string_schema,
        gleam@option:option(integer()),
        gleam@option:option(integer()),
        gleam@option:option(list(binary())),
        gleam@option:option(binary())}.

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

-type array_schema() :: {array_schema,
        gleam@option:option(integer()),
        gleam@option:option(integer()),
        schema()}.

-type object_schema() :: {object_schema,
        list(binary()),
        list({binary(), schema()})}.

-file("src/gilly/openapi/schema.gleam", 14).
-spec type_name_decoder() -> gleam@dynamic@decode:decoder(type_name()).
type_name_decoder() ->
    gleam@dynamic@decode:then(
        {decoder, fun gleam@dynamic@decode:decode_string/1},
        fun(Variant) -> case Variant of
                <<"string"/utf8>> ->
                    gleam@dynamic@decode:success(string_type);

                <<"integer"/utf8>> ->
                    gleam@dynamic@decode:success(integer_type);

                <<"number"/utf8>> ->
                    gleam@dynamic@decode:success(number_type);

                <<"array"/utf8>> ->
                    gleam@dynamic@decode:success(array_type);

                <<"object"/utf8>> ->
                    gleam@dynamic@decode:success(object_type);

                <<"boolean"/utf8>> ->
                    gleam@dynamic@decode:success(boolean_type);

                _ ->
                    gleam@dynamic@decode:failure(
                        string_type,
                        <<"TypeName"/utf8>>
                    )
            end end
    ).

-file("src/gilly/openapi/schema.gleam", 41).
-spec ref_decoder() -> gleam@dynamic@decode:decoder(schema()).
ref_decoder() ->
    gleam@dynamic@decode:field(
        <<"$ref"/utf8>>,
        {decoder, fun gleam@dynamic@decode:decode_string/1},
        fun(Ref) -> gleam@dynamic@decode:success({ref, Ref}) end
    ).

-file("src/gilly/openapi/schema.gleam", 79).
-spec base_schema_decoder() -> gleam@dynamic@decode:decoder(base_schema()).
base_schema_decoder() ->
    gleam@dynamic@decode:field(
        <<"type"/utf8>>,
        type_name_decoder(),
        fun(Type_name) ->
            gleam@dynamic@decode:optional_field(
                <<"title"/utf8>>,
                none,
                gleam@dynamic@decode:optional(
                    {decoder, fun gleam@dynamic@decode:decode_string/1}
                ),
                fun(Title) ->
                    gleam@dynamic@decode:optional_field(
                        <<"description"/utf8>>,
                        none,
                        gleam@dynamic@decode:optional(
                            {decoder, fun gleam@dynamic@decode:decode_string/1}
                        ),
                        fun(Description) ->
                            gleam@dynamic@decode:optional_field(
                                <<"nullable"/utf8>>,
                                false,
                                {decoder,
                                    fun gleam@dynamic@decode:decode_bool/1},
                                fun(Nullable) ->
                                    gleam@dynamic@decode:success(
                                        {base_schema,
                                            Type_name,
                                            Title,
                                            Description,
                                            Nullable}
                                    )
                                end
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/gilly/openapi/schema.gleam", 104).
-spec string_schema_decoder() -> gleam@dynamic@decode:decoder(string_schema()).
string_schema_decoder() ->
    gleam@dynamic@decode:optional_field(
        <<"minLength"/utf8>>,
        none,
        gleam@dynamic@decode:optional(
            {decoder, fun gleam@dynamic@decode:decode_int/1}
        ),
        fun(Min_length) ->
            gleam@dynamic@decode:optional_field(
                <<"maxLength"/utf8>>,
                none,
                gleam@dynamic@decode:optional(
                    {decoder, fun gleam@dynamic@decode:decode_int/1}
                ),
                fun(Max_length) ->
                    gleam@dynamic@decode:optional_field(
                        <<"enum"/utf8>>,
                        none,
                        gleam@dynamic@decode:optional(
                            gleam@dynamic@decode:list(
                                {decoder,
                                    fun gleam@dynamic@decode:decode_string/1}
                            )
                        ),
                        fun(Enum) ->
                            gleam@dynamic@decode:optional_field(
                                <<"format"/utf8>>,
                                none,
                                gleam@dynamic@decode:optional(
                                    {decoder,
                                        fun gleam@dynamic@decode:decode_string/1}
                                ),
                                fun(Format) ->
                                    gleam@dynamic@decode:success(
                                        {string_schema,
                                            Min_length,
                                            Max_length,
                                            Enum,
                                            Format}
                                    )
                                end
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/gilly/openapi/schema.gleam", 136).
-spec integer_schema_decoder() -> gleam@dynamic@decode:decoder(integer_schema()).
integer_schema_decoder() ->
    gleam@dynamic@decode:optional_field(
        <<"minimum"/utf8>>,
        none,
        gleam@dynamic@decode:optional(
            {decoder, fun gleam@dynamic@decode:decode_int/1}
        ),
        fun(Minimum) ->
            gleam@dynamic@decode:optional_field(
                <<"maximum"/utf8>>,
                none,
                gleam@dynamic@decode:optional(
                    {decoder, fun gleam@dynamic@decode:decode_int/1}
                ),
                fun(Maximum) ->
                    gleam@dynamic@decode:optional_field(
                        <<"format"/utf8>>,
                        none,
                        gleam@dynamic@decode:optional(
                            {decoder, fun gleam@dynamic@decode:decode_string/1}
                        ),
                        fun(Format) ->
                            gleam@dynamic@decode:success(
                                {integer_schema, Minimum, Maximum, Format}
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/gilly/openapi/schema.gleam", 159).
-spec array_schema_decoder() -> gleam@dynamic@decode:decoder(array_schema()).
array_schema_decoder() ->
    gleam@dynamic@decode:optional_field(
        <<"minItems"/utf8>>,
        none,
        gleam@dynamic@decode:optional(
            {decoder, fun gleam@dynamic@decode:decode_int/1}
        ),
        fun(Min_items) ->
            gleam@dynamic@decode:optional_field(
                <<"maxItems"/utf8>>,
                none,
                gleam@dynamic@decode:optional(
                    {decoder, fun gleam@dynamic@decode:decode_int/1}
                ),
                fun(Max_items) ->
                    gleam@dynamic@decode:field(
                        <<"items"/utf8>>,
                        schema_decoder(),
                        fun(Items) ->
                            gleam@dynamic@decode:success(
                                {array_schema, Min_items, Max_items, Items}
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/gilly/openapi/schema.gleam", 37).
-spec schema_decoder() -> gleam@dynamic@decode:decoder(schema()).
schema_decoder() ->
    gleam@dynamic@decode:one_of(ref_decoder(), [typed_schema_decoder()]).

-file("src/gilly/openapi/schema.gleam", 46).
-spec typed_schema_decoder() -> gleam@dynamic@decode:decoder(schema()).
typed_schema_decoder() ->
    gleam@dynamic@decode:then(
        base_schema_decoder(),
        fun(Base_schema) -> case erlang:element(2, Base_schema) of
                string_type ->
                    gleam@dynamic@decode:then(
                        string_schema_decoder(),
                        fun(String_schema) ->
                            gleam@dynamic@decode:success(
                                {string, Base_schema, String_schema}
                            )
                        end
                    );

                integer_type ->
                    gleam@dynamic@decode:then(
                        integer_schema_decoder(),
                        fun(Integer_schema) ->
                            gleam@dynamic@decode:success(
                                {integer, Base_schema, Integer_schema}
                            )
                        end
                    );

                number_type ->
                    gleam@dynamic@decode:success({number, Base_schema});

                array_type ->
                    gleam@dynamic@decode:then(
                        array_schema_decoder(),
                        fun(Array_schema) ->
                            gleam@dynamic@decode:success(
                                {array, Base_schema, Array_schema}
                            )
                        end
                    );

                object_type ->
                    gleam@dynamic@decode:then(
                        object_schema_decoder(),
                        fun(Object_schema) ->
                            gleam@dynamic@decode:success(
                                {object, Base_schema, Object_schema}
                            )
                        end
                    );

                boolean_type ->
                    gleam@dynamic@decode:success({boolean, Base_schema})
            end end
    ).

-file("src/gilly/openapi/schema.gleam", 178).
-spec object_schema_decoder() -> gleam@dynamic@decode:decoder(object_schema()).
object_schema_decoder() ->
    gleam@dynamic@decode:optional_field(
        <<"required"/utf8>>,
        [],
        gleam@dynamic@decode:list(
            {decoder, fun gleam@dynamic@decode:decode_string/1}
        ),
        fun(Required) ->
            gleam@dynamic@decode:optional_field(
                <<"properties"/utf8>>,
                [],
                begin
                    _pipe = gleam@dynamic@decode:dict(
                        {decoder, fun gleam@dynamic@decode:decode_string/1},
                        schema_decoder()
                    ),
                    gleam@dynamic@decode:map(_pipe, fun maps:to_list/1)
                end,
                fun(Properties) ->
                    gleam@dynamic@decode:success(
                        {object_schema, Required, Properties}
                    )
                end
            )
        end
    ).