-module(sqlode@type_mapping).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/sqlode/type_mapping.gleam").
-export([is_rich_type/1, strong_type_unwrap_fn/1, scalar_type_to_runtime_function/1, scalar_type_to_db_name/1, scalar_type_to_value_function/2, scalar_type_to_decoder/2, enum_to_string_fn/1, enum_from_string_fn/1, enum_default_fn/1, set_to_string_fn/1, set_from_string_fn/1, enum_type_name/1, enum_value_name/1, set_value_type_name/1, scalar_type_to_gleam_type/2]).
-export_type([scalar_type_info/0, type_resolution/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 scalar_type_info() :: {scalar_type_info,
        binary(),
        gleam@option:option(binary()),
        binary(),
        binary(),
        binary(),
        binary(),
        gleam@option:option(binary())}.

-type type_resolution() :: {leaf_type, scalar_type_info()} |
    {enum_resolution, binary()} |
    {set_resolution, binary()} |
    {custom_resolution,
        binary(),
        gleam@option:option(binary()),
        sqlode@model:scalar_type()} |
    {array_resolution, sqlode@model:scalar_type()}.

-file("src/sqlode/type_mapping.gleam", 39).
-spec resolve_type(sqlode@model:scalar_type()) -> type_resolution().
resolve_type(Scalar_type) ->
    case Scalar_type of
        int_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"Int"/utf8>>,
                    none,
                    <<"runtime.int"/utf8>>,
                    <<"int"/utf8>>,
                    <<"int"/utf8>>,
                    <<"decode.int"/utf8>>,
                    none}};

        float_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"Float"/utf8>>,
                    none,
                    <<"runtime.float"/utf8>>,
                    <<"float"/utf8>>,
                    <<"float"/utf8>>,
                    <<"decode.float"/utf8>>,
                    none}};

        bool_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"Bool"/utf8>>,
                    none,
                    <<"runtime.bool"/utf8>>,
                    <<"bool"/utf8>>,
                    <<"bool"/utf8>>,
                    <<"decode.bool"/utf8>>,
                    none}};

        string_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    none,
                    <<"runtime.string"/utf8>>,
                    <<"string"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    none}};

        bytes_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"BitArray"/utf8>>,
                    none,
                    <<"runtime.bytes"/utf8>>,
                    <<"bytes"/utf8>>,
                    <<"bytea"/utf8>>,
                    <<"decode.bit_array"/utf8>>,
                    none}};

        date_time_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    {some, <<"SqlTimestamp"/utf8>>},
                    <<"runtime.string"/utf8>>,
                    <<"datetime"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    {some, <<"sql_timestamp_to_string"/utf8>>}}};

        date_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    {some, <<"SqlDate"/utf8>>},
                    <<"runtime.string"/utf8>>,
                    <<"date"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    {some, <<"sql_date_to_string"/utf8>>}}};

        time_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    {some, <<"SqlTime"/utf8>>},
                    <<"runtime.string"/utf8>>,
                    <<"time"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    {some, <<"sql_time_to_string"/utf8>>}}};

        uuid_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    {some, <<"SqlUuid"/utf8>>},
                    <<"runtime.string"/utf8>>,
                    <<"uuid"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    {some, <<"sql_uuid_to_string"/utf8>>}}};

        json_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    {some, <<"SqlJson"/utf8>>},
                    <<"runtime.string"/utf8>>,
                    <<"json"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    {some, <<"sql_json_to_string"/utf8>>}}};

        decimal_type ->
            {leaf_type,
                {scalar_type_info,
                    <<"String"/utf8>>,
                    {some, <<"SqlDecimal"/utf8>>},
                    <<"runtime.string"/utf8>>,
                    <<"decimal"/utf8>>,
                    <<"text"/utf8>>,
                    <<"decode.string"/utf8>>,
                    {some, <<"sql_decimal_to_string"/utf8>>}}};

        {enum_type, Name} ->
            {enum_resolution, Name};

        {set_type, Name@1} ->
            {set_resolution, Name@1};

        {custom_type, Name@2, Module, Underlying} ->
            {custom_resolution, Name@2, Module, Underlying};

        {array_type, Element} ->
            {array_resolution, Element}
    end.

-file("src/sqlode/type_mapping.gleam", 180).
-spec is_rich_type(sqlode@model:scalar_type()) -> boolean().
is_rich_type(Scalar_type) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            gleam@option:is_some(erlang:element(3, Info));

        {enum_resolution, _} ->
            false;

        {set_resolution, _} ->
            false;

        {custom_resolution, _, _, _} ->
            false;

        {array_resolution, _} ->
            false
    end.

-file("src/sqlode/type_mapping.gleam", 190).
-spec strong_type_unwrap_fn(sqlode@model:scalar_type()) -> gleam@option:option(binary()).
strong_type_unwrap_fn(Scalar_type) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            erlang:element(8, Info);

        {enum_resolution, _} ->
            none;

        {set_resolution, _} ->
            none;

        {custom_resolution, _, _, _} ->
            none;

        {array_resolution, _} ->
            none
    end.

-file("src/sqlode/type_mapping.gleam", 200).
-spec scalar_type_to_runtime_function(sqlode@model:scalar_type()) -> binary().
scalar_type_to_runtime_function(Scalar_type) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            erlang:element(4, Info);

        {enum_resolution, _} ->
            <<"runtime.string"/utf8>>;

        {set_resolution, _} ->
            <<"runtime.string"/utf8>>;

        {custom_resolution, _, _, Underlying} ->
            scalar_type_to_runtime_function(Underlying);

        {array_resolution, Element} ->
            scalar_type_to_runtime_function(Element)
    end.

-file("src/sqlode/type_mapping.gleam", 211).
-spec scalar_type_to_db_name(sqlode@model:scalar_type()) -> binary().
scalar_type_to_db_name(Scalar_type) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            erlang:element(5, Info);

        {enum_resolution, Name} ->
            Name;

        {set_resolution, Name@1} ->
            Name@1;

        {custom_resolution, _, _, Underlying} ->
            scalar_type_to_db_name(Underlying);

        {array_resolution, Element} ->
            <<(scalar_type_to_db_name(Element))/binary, "[]"/utf8>>
    end.

-file("src/sqlode/type_mapping.gleam", 221).
-spec scalar_type_to_value_function(
    sqlode@model:engine(),
    sqlode@model:scalar_type()
) -> binary().
scalar_type_to_value_function(Engine, Scalar_type) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            case Scalar_type of
                bytes_type ->
                    case Engine of
                        postgre_s_q_l ->
                            <<"bytea"/utf8>>;

                        s_q_lite ->
                            <<"blob"/utf8>>;

                        my_s_q_l ->
                            <<"blob"/utf8>>
                    end;

                _ ->
                    erlang:element(6, Info)
            end;

        {enum_resolution, _} ->
            <<"text"/utf8>>;

        {set_resolution, _} ->
            <<"text"/utf8>>;

        {custom_resolution, _, _, Underlying} ->
            scalar_type_to_value_function(Engine, Underlying);

        {array_resolution, Element} ->
            <<<<"array(pog."/utf8,
                    (scalar_type_to_value_function(Engine, Element))/binary>>/binary,
                ")"/utf8>>
    end.

-file("src/sqlode/type_mapping.gleam", 244).
-spec scalar_type_to_decoder(sqlode@model:engine(), sqlode@model:scalar_type()) -> binary().
scalar_type_to_decoder(Engine, Scalar_type) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            case Scalar_type of
                bool_type ->
                    case Engine of
                        s_q_lite ->
                            <<"decode.then(decode.int, fn(v) { decode.success(v != 0) })"/utf8>>;

                        my_s_q_l ->
                            <<"decode.then(decode.int, fn(v) { decode.success(v != 0) })"/utf8>>;

                        postgre_s_q_l ->
                            <<"decode.bool"/utf8>>
                    end;

                _ ->
                    erlang:element(7, Info)
            end;

        {enum_resolution, _} ->
            <<"decode.string"/utf8>>;

        {set_resolution, _} ->
            <<"decode.string"/utf8>>;

        {custom_resolution, _, _, Underlying} ->
            scalar_type_to_decoder(Engine, Underlying);

        {array_resolution, Element} ->
            <<<<"decode.list("/utf8,
                    (scalar_type_to_decoder(Engine, Element))/binary>>/binary,
                ")"/utf8>>
    end.

-file("src/sqlode/type_mapping.gleam", 278).
-spec enum_to_string_fn(binary()) -> binary().
enum_to_string_fn(Name) ->
    <<(string:lowercase(Name))/binary, "_to_string"/utf8>>.

-file("src/sqlode/type_mapping.gleam", 282).
-spec enum_from_string_fn(binary()) -> binary().
enum_from_string_fn(Name) ->
    <<(string:lowercase(Name))/binary, "_from_string"/utf8>>.

-file("src/sqlode/type_mapping.gleam", 290).
?DOC(
    " Name of the helper that returns the enum's first variant as a\n"
    " `zero`-style fallback. Used by generated adapter / queries\n"
    " decoders where `decode.failure(zero, msg)` needs a concrete value\n"
    " of the target type.\n"
).
-spec enum_default_fn(binary()) -> binary().
enum_default_fn(Name) ->
    <<(string:lowercase(Name))/binary, "_default"/utf8>>.

-file("src/sqlode/type_mapping.gleam", 305).
-spec set_to_string_fn(binary()) -> binary().
set_to_string_fn(Name) ->
    <<(string:lowercase(Name))/binary, "_set_to_string"/utf8>>.

-file("src/sqlode/type_mapping.gleam", 309).
-spec set_from_string_fn(binary()) -> binary().
set_from_string_fn(Name) ->
    <<(string:lowercase(Name))/binary, "_set_from_string"/utf8>>.

-file("src/sqlode/type_mapping.gleam", 313).
-spec simple_pascal_case(binary()) -> binary().
simple_pascal_case(Input) ->
    _pipe = Input,
    _pipe@1 = gleam@string:split(_pipe, <<"_"/utf8>>),
    _pipe@2 = gleam@list:map(
        _pipe@1,
        fun(Word) -> case gleam_stdlib:string_pop_grapheme(Word) of
                {ok, {First, Rest}} ->
                    <<(string:uppercase(First))/binary,
                        (string:lowercase(Rest))/binary>>;

                {error, _} ->
                    Word
            end end
    ),
    gleam@string:join(_pipe@2, <<""/utf8>>).

-file("src/sqlode/type_mapping.gleam", 270).
-spec enum_type_name(binary()) -> binary().
enum_type_name(Name) ->
    simple_pascal_case(Name).

-file("src/sqlode/type_mapping.gleam", 274).
-spec enum_value_name(binary()) -> binary().
enum_value_name(Value) ->
    simple_pascal_case(Value).

-file("src/sqlode/type_mapping.gleam", 301).
?DOC(
    " Gleam type name for a single value of a MySQL `SET` column. The\n"
    " generated value type ends in `Value` to disambiguate it from the\n"
    " containing list — `SET('red','green')` on a column called `tags`\n"
    " surfaces as `List(TagsValue)` so callers can pattern-match on each\n"
    " chosen flag without colliding with the SET column name.\n"
).
-spec set_value_type_name(binary()) -> binary().
set_value_type_name(Name) ->
    <<(simple_pascal_case(Name))/binary, "Value"/utf8>>.

-file("src/sqlode/type_mapping.gleam", 161).
-spec scalar_type_to_gleam_type(
    sqlode@model:scalar_type(),
    sqlode@model:type_mapping()
) -> binary().
scalar_type_to_gleam_type(Scalar_type, Type_mapping) ->
    case resolve_type(Scalar_type) of
        {leaf_type, Info} ->
            case {Type_mapping, erlang:element(3, Info)} of
                {rich_mapping, {some, Rich}} ->
                    Rich;

                {strong_mapping, {some, Rich}} ->
                    Rich;

                {_, _} ->
                    erlang:element(2, Info)
            end;

        {enum_resolution, Name} ->
            enum_type_name(Name);

        {set_resolution, Name@1} ->
            <<<<"List("/utf8, (set_value_type_name(Name@1))/binary>>/binary,
                ")"/utf8>>;

        {custom_resolution, Name@2, _, _} ->
            Name@2;

        {array_resolution, Element} ->
            <<<<"List("/utf8,
                    (scalar_type_to_gleam_type(Element, Type_mapping))/binary>>/binary,
                ")"/utf8>>
    end.