-module(claude@types@message).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/claude/types/message.gleam").
-export([new_user/1, new_user_blocks/1, new_assistant_blocks/1, content_to_params/1]).
-export_type([role/0, stop_reason/0, message_param/0, message_content/0, message/0, usage/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 role() :: user | assistant.

-type stop_reason() :: end_turn |
    tool_use_stop |
    max_tokens |
    stop_sequence |
    pause_turn |
    refusal.

-type message_param() :: {message_param, role(), message_content()}.

-type message_content() :: {string_content, binary()} |
    {block_content, list(claude@types@content:content_block_param())}.

-type message() :: {message,
        binary(),
        role(),
        list(claude@types@content:content_block()),
        binary(),
        gleam@option:option(stop_reason()),
        gleam@option:option(binary()),
        usage()}.

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

-file("src/claude/types/message.gleam", 60).
?DOC(" Create a user message with plain text content.\n").
-spec new_user(binary()) -> message_param().
new_user(Text) ->
    {message_param, user, {string_content, Text}}.

-file("src/claude/types/message.gleam", 65).
?DOC(" Create a user message with structured content blocks.\n").
-spec new_user_blocks(list(claude@types@content:content_block_param())) -> message_param().
new_user_blocks(Blocks) ->
    {message_param, user, {block_content, Blocks}}.

-file("src/claude/types/message.gleam", 70).
?DOC(" Create an assistant message with structured content blocks.\n").
-spec new_assistant_blocks(list(claude@types@content:content_block_param())) -> message_param().
new_assistant_blocks(Blocks) ->
    {message_param, assistant, {block_content, Blocks}}.

-file("src/claude/types/message.gleam", 82).
-spec block_to_param(claude@types@content:content_block()) -> {ok,
        claude@types@content:content_block_param()} |
    {error, nil}.
block_to_param(Block) ->
    case Block of
        {text, T, _} ->
            {ok, {text_param, T}};

        {tool_use, Id, Name, Input} ->
            {ok, {tool_use_param, Id, Name, Input}};

        {thinking, T@1, S} ->
            {ok, {thinking_param, T@1, S}};

        {redacted_thinking, D} ->
            {ok, {redacted_thinking_param, D}};

        {server_tool_use, Id@1, Name@1, Input@1} ->
            {ok, {server_tool_use_param, Id@1, Name@1, Input@1}};

        {web_search_result, _, _, _, _} ->
            {error, nil}
    end.

-file("src/claude/types/message.gleam", 78).
?DOC(
    " Convert API response content blocks to content block params.\n"
    " Maps Text -> TextParam, ToolUse -> ToolUseParam, Thinking -> ThinkingParam,\n"
    " RedactedThinking -> RedactedThinkingParam, ServerToolUse -> ServerToolUseParam.\n"
    " WebSearchResult blocks are filtered out as they have no corresponding param type.\n"
).
-spec content_to_params(list(claude@types@content:content_block())) -> list(claude@types@content:content_block_param()).
content_to_params(Content) ->
    gleam@list:filter_map(Content, fun block_to_param/1).