-module(olive@server_run).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([reload_server_code/1, start_server/1]).
-export_type([module_/0, what/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(
    " the `server_run` module runs the \"main\" server and also handles the rebuilding\n"
    " of the main server code every time it is needed.\n"
).

-type module_() :: any().

-type what() :: any().

-file("src/olive/server_run.gleam", 42).
-spec build_server(olive@config:config()) -> {ok, binary()} | {error, binary()}.
build_server(Config) ->
    olive@logging:notice(
        erlang:element(2, Config),
        <<"Launching new build via `gleam build`"/utf8>>
    ),
    _pipe = shellout:command(
        <<"gleam"/utf8>>,
        [<<"build"/utf8>>],
        erlang:element(6, Config),
        [let_be_stderr, let_be_stdout]
    ),
    gleam@result:replace_error(
        _pipe,
        <<"Error while building gleam project, see gleam output ☝️"/utf8>>
    ).

-file("src/olive/server_run.gleam", 34).
-spec reload_server_code(olive@config:config()) -> {ok, nil} | {error, binary()}.
reload_server_code(Config) ->
    _pipe = build_server(Config),
    gleam@result:'try'(_pipe, fun(_) -> _pipe@1 = olive_ffi:reload_modules(),
            gleam@result:map_error(
                _pipe@1,
                fun(_) -> <<"Error while reloading Erlang modules"/utf8>> end
            ) end).

-file("src/olive/server_run.gleam", 53).
-spec get_atom(binary()) -> {ok, gleam@erlang@atom:atom_()} | {error, binary()}.
get_atom(Name) ->
    _pipe = gleam_erlang_ffi:atom_from_string(Name),
    gleam@result:replace_error(
        _pipe,
        <<"Cannot find loaded atom "/utf8, Name/binary>>
    ).

-file("src/olive/server_run.gleam", 58).
-spec posix_error_to_string(olive@config:config(), gleam@erlang@atom:atom_()) -> binary().
posix_error_to_string(Config, Posix) ->
    <<<<<<"Cannot launch server in "/utf8, (erlang:element(6, Config))/binary>>/binary,
            " because of the following: "/utf8>>/binary,
        (erlang:atom_to_binary(Posix))/binary>>.

-file("src/olive/server_run.gleam", 26).
-spec start_server(olive@config:config()) -> {ok, gleam@erlang@process:pid_()} |
    {error, binary()}.
start_server(Config) ->
    gleam@result:'try'(
        build_server(Config),
        fun(_) ->
            gleam@result:'try'(
                get_atom(<<(erlang:element(7, Config))/binary, "@@main"/utf8>>),
                fun(Fully_qualified_module) ->
                    gleam@result:'try'(
                        get_atom(erlang:element(7, Config)),
                        fun(Module) ->
                            _pipe = olive_ffi:spawn_main_server(
                                erlang:element(6, Config),
                                Fully_qualified_module,
                                Module
                            ),
                            gleam@result:map_error(
                                _pipe,
                                fun(_capture) ->
                                    posix_error_to_string(Config, _capture)
                                end
                            )
                        end
                    )
                end
            )
        end
    ).