-module(glipt@cmd@add).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch, inline]).
-define(FILEPATH, "src/glipt/cmd/add.gleam").
-export([execute/1]).

-file("src/glipt/cmd/add.gleam", 37).
-spec parse_package_spec(binary()) -> {binary(), binary()}.
parse_package_spec(Spec) ->
    case gleam_stdlib:contains_string(Spec, <<"@"/utf8>>) of
        true ->
            case gleam@string:split_once(Spec, <<"@"/utf8>>) of
                {ok, {Name, Ver}} ->
                    {Name, glipt@parser:expand_shorthand_version(Ver)};

                {error, nil} ->
                    {Spec, <<""/utf8>>}
            end;

        false ->
            case gleam@string:split_once(Spec, <<" "/utf8>>) of
                {ok, {Name@1, Constraint}} ->
                    {Name@1, Constraint};

                {error, nil} ->
                    {Spec, <<""/utf8>>}
            end
    end.

-file("src/glipt/cmd/add.gleam", 8).
-spec execute(list(binary())) -> nil.
execute(Args) ->
    case Args of
        [Package_spec, File_path] ->
            {Name, Constraint} = parse_package_spec(Package_spec),
            case Constraint of
                <<""/utf8>> ->
                    gleam_stdlib:println_error(
                        <<"Error: version is required in v0.1. Use: glipt add package@1.0.0 file.gleam"/utf8>>
                    );

                _ ->
                    Source = begin
                        _pipe = simplifile:read(File_path),
                        gleam@result:unwrap(_pipe, <<""/utf8>>)
                    end,
                    Meta = glipt@parser:parse(Source),
                    Updated = glipt@parser:update_dep(Meta, Name, Constraint),
                    New_content = glipt@internal@script:reassemble(
                        Updated,
                        Source
                    ),
                    case simplifile:write(File_path, New_content) of
                        {ok, nil} ->
                            gleam_stdlib:println(
                                <<<<<<<<<<"Added "/utf8, Name/binary>>/binary,
                                                " "/utf8>>/binary,
                                            Constraint/binary>>/binary,
                                        " to "/utf8>>/binary,
                                    File_path/binary>>
                            );

                        {error, E} ->
                            gleam_stdlib:println_error(
                                <<"Error writing file: "/utf8,
                                    (gleam@string:inspect(E))/binary>>
                            )
                    end
            end;

        _ ->
            gleam_stdlib:println_error(
                <<"Usage: glipt add <package@version> <file.gleam>"/utf8>>
            )
    end.