toon_codec

-module(toon_codec@encode@writer).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/toon_codec/encode/writer.gleam").
-export([new/1, push/3, to_string/1, is_empty/1, line_count/1]).
-export_type([writer/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(
    " Line writer for building TOON output with proper indentation.\n"
    "\n"
    " This internal module provides an opaque Writer type that accumulates\n"
    " lines with automatic indentation formatting.\n"
    " Opaque type for building lines with indentation.\n"
    " Create a new writer with the specified indentation size.\n"
    "\n"
    " ## Examples\n"
    "\n"
    " ```gleam\n"
    " let writer = new(2)\n"
    " ```\n"
    " Add a line at the specified depth.\n"
    "\n"
    " The depth is multiplied by indent_size to calculate the indentation.\n"
    "\n"
    " ## Examples\n"
    "\n"
    " ```gleam\n"
    " let writer = new(2)\n"
    " let writer = push(writer, 0, \"name: Alice\")\n"
    " let writer = push(writer, 1, \"id: 123\")\n"
    " ```\n"
    " Convert the writer to a final string output.\n"
    "\n"
    " Lines are reversed (since they were accumulated in reverse order)\n"
    " and joined with newlines. No trailing newline is added.\n"
    "\n"
    " ## Examples\n"
    "\n"
    " ```gleam\n"
    " let writer = new(2)\n"
    " let writer = push(writer, 0, \"name: Alice\")\n"
    " let writer = push(writer, 1, \"id: 123\")\n"
    " to_string(writer)\n"
    " // -> \"name: Alice\\n  id: 123\"\n"
    " ```\n"
    " Check if the writer is empty (has no lines).\n"
    " Get the number of lines in the writer.\n"
).

-opaque writer() :: {writer, integer(), list(binary())}.

-file("src/toon_codec/encode/writer.gleam", 52).
-spec new(integer()) -> writer().
new(Indent_size) ->
    {writer, Indent_size, []}.

-file("src/toon_codec/encode/writer.gleam", 56).
-spec push(writer(), integer(), binary()) -> writer().
push(Writer, Depth, Line) ->
    Indent = gleam@string:repeat(
        <<" "/utf8>>,
        Depth * erlang:element(2, Writer)
    ),
    Formatted_line = <<Indent/binary, Line/binary>>,
    {writer,
        erlang:element(2, Writer),
        [Formatted_line | erlang:element(3, Writer)]}.

-file("src/toon_codec/encode/writer.gleam", 62).
-spec to_string(writer()) -> binary().
to_string(Writer) ->
    _pipe = erlang:element(3, Writer),
    _pipe@1 = lists:reverse(_pipe),
    gleam@string:join(_pipe@1, <<"\n"/utf8>>).

-file("src/toon_codec/encode/writer.gleam", 68).
-spec is_empty(writer()) -> boolean().
is_empty(Writer) ->
    gleam@list:is_empty(erlang:element(3, Writer)).

-file("src/toon_codec/encode/writer.gleam", 72).
-spec line_count(writer()) -> integer().
line_count(Writer) ->
    erlang:length(erlang:element(3, Writer)).