-module(caffeine_lang).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/caffeine_lang.gleam").
-export([main/0]).

-file("src/caffeine_lang.gleam", 5).
-spec print_usage() -> nil.
print_usage() ->
    gleam_stdlib:println(<<"Caffeine SLI/SLO compiler"/utf8>>),
    gleam_stdlib:println(<<""/utf8>>),
    gleam_stdlib:println(<<"Usage:"/utf8>>),
    gleam_stdlib:println(
        <<"  caffeine compile <specification_directory> <instantiation_directory> <output_directory>"/utf8>>
    ),
    gleam_stdlib:println(<<""/utf8>>),
    gleam_stdlib:println(<<"Arguments:"/utf8>>),
    gleam_stdlib:println(
        <<"  specification_directory   Directory containing specification files"/utf8>>
    ),
    gleam_stdlib:println(
        <<"  instantiation_directory   Directory containing instantiation files"/utf8>>
    ),
    gleam_stdlib:println(
        <<"  output_directory          Directory to output compiled files"/utf8>>
    ).

-file("src/caffeine_lang.gleam", 23).
-spec main() -> nil.
main() ->
    Args = erlang:element(4, argv:load()),
    case Args of
        [<<"compile"/utf8>>, Spec_dir, Inst_dir, Output_dir] ->
            caffeine_lang@compiler:compile(Spec_dir, Inst_dir, Output_dir);

        [<<"compile"/utf8>>] ->
            gleam_stdlib:println_error(
                <<"Error: compile command requires 3 arguments"/utf8>>
            ),
            print_usage();

        [<<"compile"/utf8>> | _] ->
            gleam_stdlib:println_error(
                <<"Error: compile command requires exactly 3 arguments"/utf8>>
            ),
            print_usage();

        [<<"--help"/utf8>>] ->
            print_usage();

        [<<"-h"/utf8>>] ->
            print_usage();

        [] ->
            print_usage();

        _ ->
            gleam_stdlib:println_error(<<"Error: unknown command"/utf8>>),
            print_usage()
    end.