-module(anthropic@tools@builder).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/anthropic/tools/builder.gleam").
-export([tool_builder/1, tool_builder_with_description/2, with_description/2, add_property/4, add_string_param/4, add_number_param/4, add_integer_param/4, add_boolean_param/4, add_enum_param/5, add_string_array_param/5, add_number_array_param/4, add_object_param/6, build/1, build_simple/1, builder_error_to_string/1, validate_name/1, build_validated/1]).
-export_type([tool_builder/0, tool_builder_error/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.

?MODULEDOC(
    " Fluent builder for tool definitions\n"
    "\n"
    " This module provides an ergonomic builder API for creating tool definitions.\n"
    " The builder pattern allows for type-safe, readable tool construction.\n"
    "\n"
    " ## Example\n"
    "\n"
    " ```gleam\n"
    " let weather_tool =\n"
    "   tool_builder(\"get_weather\")\n"
    "   |> with_description(\"Get the current weather for a location\")\n"
    "   |> add_string_param(\"location\", \"City and state, e.g. 'San Francisco, CA'\", True)\n"
    "   |> add_enum_param(\"unit\", \"Temperature unit\", [\"celsius\", \"fahrenheit\"], False)\n"
    "   |> build()\n"
    "\n"
    " // For tools with no parameters\n"
    " let time_tool =\n"
    "   tool_builder(\"get_time\")\n"
    "   |> with_description(\"Get the current time\")\n"
    "   |> build_simple()\n"
    " ```\n"
).

-type tool_builder() :: {tool_builder,
        binary(),
        gleam@option:option(binary()),
        list({binary(), anthropic@tool:property_schema()}),
        list(binary())}.

-type tool_builder_error() :: {invalid_tool_name,
        anthropic@tool:tool_name_error()} |
    {duplicate_property, binary()}.

-file("src/anthropic/tools/builder.gleam", 55).
?DOC(" Start building a new tool with the given name\n").
-spec tool_builder(binary()) -> tool_builder().
tool_builder(Name) ->
    {tool_builder, Name, none, [], []}.

-file("src/anthropic/tools/builder.gleam", 60).
?DOC(" Start building a new tool with name and description\n").
-spec tool_builder_with_description(binary(), binary()) -> tool_builder().
tool_builder_with_description(Name, Description) ->
    {tool_builder, Name, {some, Description}, [], []}.

-file("src/anthropic/tools/builder.gleam", 77).
?DOC(" Set the description for the tool\n").
-spec with_description(tool_builder(), binary()) -> tool_builder().
with_description(Builder, Description) ->
    {tool_builder,
        erlang:element(2, Builder),
        {some, Description},
        erlang:element(4, Builder),
        erlang:element(5, Builder)}.

-file("src/anthropic/tools/builder.gleam", 247).
?DOC(" Add a custom property schema\n").
-spec add_property(
    tool_builder(),
    binary(),
    anthropic@tool:property_schema(),
    boolean()
) -> tool_builder().
add_property(Builder, Name, Property, Is_required) ->
    New_properties = lists:append(
        erlang:element(4, Builder),
        [{Name, Property}]
    ),
    New_required = case Is_required of
        true ->
            lists:append(erlang:element(5, Builder), [Name]);

        false ->
            erlang:element(5, Builder)
    end,
    {tool_builder,
        erlang:element(2, Builder),
        erlang:element(3, Builder),
        New_properties,
        New_required}.

-file("src/anthropic/tools/builder.gleam", 85).
?DOC(" Add a string parameter\n").
-spec add_string_param(tool_builder(), binary(), binary(), boolean()) -> tool_builder().
add_string_param(Builder, Name, Description, Is_required) ->
    Prop = {property_schema,
        <<"string"/utf8>>,
        {some, Description},
        none,
        none,
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 105).
?DOC(" Add a number parameter\n").
-spec add_number_param(tool_builder(), binary(), binary(), boolean()) -> tool_builder().
add_number_param(Builder, Name, Description, Is_required) ->
    Prop = {property_schema,
        <<"number"/utf8>>,
        {some, Description},
        none,
        none,
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 125).
?DOC(" Add an integer parameter\n").
-spec add_integer_param(tool_builder(), binary(), binary(), boolean()) -> tool_builder().
add_integer_param(Builder, Name, Description, Is_required) ->
    Prop = {property_schema,
        <<"integer"/utf8>>,
        {some, Description},
        none,
        none,
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 145).
?DOC(" Add a boolean parameter\n").
-spec add_boolean_param(tool_builder(), binary(), binary(), boolean()) -> tool_builder().
add_boolean_param(Builder, Name, Description, Is_required) ->
    Prop = {property_schema,
        <<"boolean"/utf8>>,
        {some, Description},
        none,
        none,
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 165).
?DOC(" Add an enum parameter (string with allowed values)\n").
-spec add_enum_param(
    tool_builder(),
    binary(),
    binary(),
    list(binary()),
    boolean()
) -> tool_builder().
add_enum_param(Builder, Name, Description, Values, Is_required) ->
    Prop = {property_schema,
        <<"string"/utf8>>,
        {some, Description},
        {some, Values},
        none,
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 186).
?DOC(" Add an array parameter with string items\n").
-spec add_string_array_param(
    tool_builder(),
    binary(),
    binary(),
    binary(),
    boolean()
) -> tool_builder().
add_string_array_param(
    Builder,
    Name,
    Description,
    Item_description,
    Is_required
) ->
    Item_schema = {property_schema,
        <<"string"/utf8>>,
        {some, Item_description},
        none,
        none,
        none,
        none},
    Prop = {property_schema,
        <<"array"/utf8>>,
        {some, Description},
        none,
        {some, Item_schema},
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 217).
?DOC(" Add an array parameter with number items\n").
-spec add_number_array_param(tool_builder(), binary(), binary(), boolean()) -> tool_builder().
add_number_array_param(Builder, Name, Description, Is_required) ->
    Item_schema = {property_schema,
        <<"number"/utf8>>,
        none,
        none,
        none,
        none,
        none},
    Prop = {property_schema,
        <<"array"/utf8>>,
        {some, Description},
        none,
        {some, Item_schema},
        none,
        none},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 263).
?DOC(" Add an object parameter with nested properties\n").
-spec add_object_param(
    tool_builder(),
    binary(),
    binary(),
    list({binary(), anthropic@tool:property_schema()}),
    list(binary()),
    boolean()
) -> tool_builder().
add_object_param(
    Builder,
    Name,
    Description,
    Nested_properties,
    Nested_required,
    Is_required
) ->
    Prop = {property_schema,
        <<"object"/utf8>>,
        {some, Description},
        none,
        none,
        {some, Nested_properties},
        {some, Nested_required}},
    add_property(Builder, Name, Prop, Is_required).

-file("src/anthropic/tools/builder.gleam", 292).
?DOC(
    " Build the tool from the builder state without validation.\n"
    "\n"
    " Use this when you trust the tool name is valid (e.g., hardcoded constants).\n"
    " For untrusted input, use `build_validated()` instead.\n"
).
-spec build(tool_builder()) -> anthropic@tool:tool().
build(Builder) ->
    Input_schema = case erlang:element(4, Builder) of
        [] ->
            {input_schema, <<"object"/utf8>>, none, none};

        Props ->
            {input_schema,
                <<"object"/utf8>>,
                {some, Props},
                case erlang:element(5, Builder) of
                    [] ->
                        none;

                    Reqs ->
                        {some, Reqs}
                end}
    end,
    {tool,
        anthropic@tool:tool_name_unchecked(erlang:element(2, Builder)),
        erlang:element(3, Builder),
        Input_schema}.

-file("src/anthropic/tools/builder.gleam", 317).
?DOC(
    " Build a simple tool with no parameters without validation.\n"
    "\n"
    " Use this when you trust the tool name is valid (e.g., hardcoded constants).\n"
    " For untrusted input, use `build_validated()` instead.\n"
).
-spec build_simple(tool_builder()) -> anthropic@tool:tool().
build_simple(Builder) ->
    {tool,
        anthropic@tool:tool_name_unchecked(erlang:element(2, Builder)),
        erlang:element(3, Builder),
        {input_schema, <<"object"/utf8>>, none, none}}.

-file("src/anthropic/tools/builder.gleam", 342).
?DOC(" Convert a ToolBuilderError to a human-readable string\n").
-spec builder_error_to_string(tool_builder_error()) -> binary().
builder_error_to_string(Error) ->
    case Error of
        {invalid_tool_name, Name_error} ->
            anthropic@tool:tool_name_error_to_string(Name_error);

        {duplicate_property, Name} ->
            <<"Duplicate property name: "/utf8, Name/binary>>
    end.

-file("src/anthropic/tools/builder.gleam", 354).
?DOC(
    " Validate a tool name according to Anthropic's requirements.\n"
    "\n"
    " Must match regex: ^[a-zA-Z0-9_-]{1,64}$\n"
    "\n"
    " Returns the validated ToolName on success.\n"
).
-spec validate_name(binary()) -> {ok, anthropic@tool:tool_name()} |
    {error, tool_builder_error()}.
validate_name(Name) ->
    _pipe = anthropic@tool:tool_name(Name),
    gleam@result:map_error(
        _pipe,
        fun(Field@0) -> {invalid_tool_name, Field@0} end
    ).

-file("src/anthropic/tools/builder.gleam", 410).
-spec has_duplicates(list(binary())) -> boolean().
has_duplicates(Items) ->
    erlang:length(Items) /= erlang:length(gleam@list:unique(Items)).

-file("src/anthropic/tools/builder.gleam", 418).
-spec find_first_duplicate_helper(list(binary()), list(binary())) -> gleam@option:option(binary()).
find_first_duplicate_helper(Remaining, Seen) ->
    case Remaining of
        [] ->
            none;

        [First | Rest] ->
            case gleam@list:contains(Seen, First) of
                true ->
                    {some, First};

                false ->
                    find_first_duplicate_helper(Rest, [First | Seen])
            end
    end.

-file("src/anthropic/tools/builder.gleam", 414).
-spec find_first_duplicate(list(binary())) -> gleam@option:option(binary()).
find_first_duplicate(Items) ->
    find_first_duplicate_helper(Items, []).

-file("src/anthropic/tools/builder.gleam", 366).
?DOC(
    " Build and validate the tool.\n"
    "\n"
    " This validates that:\n"
    " - The tool name matches Anthropic's requirements (alphanumeric, _, -, 1-64 chars)\n"
    " - No duplicate property names exist\n"
    "\n"
    " Use this for user-provided or untrusted tool names.\n"
).
-spec build_validated(tool_builder()) -> {ok, anthropic@tool:tool()} |
    {error, tool_builder_error()}.
build_validated(Builder) ->
    case validate_name(erlang:element(2, Builder)) of
        {error, Err} ->
            {error, Err};

        {ok, Validated_name} ->
            Prop_names = gleam@list:map(
                erlang:element(4, Builder),
                fun(P) -> erlang:element(1, P) end
            ),
            case has_duplicates(Prop_names) of
                true ->
                    Dup = find_first_duplicate(Prop_names),
                    {error,
                        {duplicate_property,
                            gleam@option:unwrap(Dup, <<""/utf8>>)}};

                false ->
                    Input_schema = case erlang:element(4, Builder) of
                        [] ->
                            {input_schema, <<"object"/utf8>>, none, none};

                        Props ->
                            {input_schema,
                                <<"object"/utf8>>,
                                {some, Props},
                                case erlang:element(5, Builder) of
                                    [] ->
                                        none;

                                    Reqs ->
                                        {some, Reqs}
                                end}
                    end,
                    {ok,
                        {tool,
                            Validated_name,
                            erlang:element(3, Builder),
                            Input_schema}}
            end
    end.