-module(handles).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([prepare/1, run/2]).
-export_type([template/0]).

-opaque template() :: {template, list(handles@internal@parser:ast())}.

-spec prepare(binary()) -> {ok, template()} |
    {error, handles@error:tokenizer_error()}.
prepare(Template) ->
    _pipe = handles@internal@tokenizer:run(Template, 0, []),
    gleam@result:map(
        _pipe,
        fun(Tokens) ->
            Ast = handles@internal@parser:run(Tokens, []),
            {template, Ast}
        end
    ).

-spec run(template(), handles@ctx:value()) -> {ok, binary()} |
    {error, handles@error:runtime_error()}.
run(Template, Ctx) ->
    {template, Ast} = Template,
    handles@internal@engine:run(Ast, Ctx, gleam@string_builder:new()).