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

-export([main/0, default_config/0, connect/1, disconnect/1, optimize/1]).
-export_type([journal_mode/0, sync_mode/0, temp_store/0, config/0]).

-type journal_mode() :: journal_delete |
    journal_truncate |
    journal_persist |
    journal_memory |
    journal_wal |
    journal_off.

-type sync_mode() :: sync_extra | sync_full | sync_normal | sync_off.

-type temp_store() :: temp_store_default | temp_store_file | temp_store_memory.

-type config() :: {config,
        binary(),
        journal_mode(),
        sync_mode(),
        temp_store(),
        gleam@option:option(integer()),
        gleam@option:option(integer())}.

-spec main() -> nil.
main() ->
    feather@migrate:main().

-spec default_config() -> config().
default_config() ->
    {config,
        <<"./sqlite.db"/utf8>>,
        journal_wal,
        sync_normal,
        temp_store_memory,
        none,
        none}.

-spec connect(config()) -> {ok, sqlight:connection()} | {error, sqlight:error()}.
connect(Config) ->
    gleam@result:'try'(
        sqlight:open(erlang:element(2, Config)),
        fun(Connection) ->
            Journal_mode = case erlang:element(3, Config) of
                journal_off ->
                    <<"OFF"/utf8>>;

                journal_wal ->
                    <<"WAL"/utf8>>;

                journal_delete ->
                    <<"DELETE"/utf8>>;

                journal_memory ->
                    <<"MEMORY"/utf8>>;

                journal_truncate ->
                    <<"TRUNCATE"/utf8>>;

                journal_persist ->
                    <<"PERSIST"/utf8>>
            end,
            Sync = case erlang:element(4, Config) of
                sync_off ->
                    <<"OFF"/utf8>>;

                sync_full ->
                    <<"FULL"/utf8>>;

                sync_extra ->
                    <<"EXTRA"/utf8>>;

                sync_normal ->
                    <<"NORMAL"/utf8>>
            end,
            Temp_store = case erlang:element(5, Config) of
                temp_store_file ->
                    <<"FILE"/utf8>>;

                temp_store_memory ->
                    <<"MEMORY"/utf8>>;

                temp_store_default ->
                    <<"DEFAULT"/utf8>>
            end,
            gleam@result:'try'(
                sqlight:exec(
                    <<<<"PRAGMA journal_mode = "/utf8, Journal_mode/binary>>/binary,
                        ";"/utf8>>,
                    Connection
                ),
                fun(_) ->
                    gleam@result:'try'(
                        sqlight:exec(
                            <<<<"PRAGMA synchronous = "/utf8, Sync/binary>>/binary,
                                ";"/utf8>>,
                            Connection
                        ),
                        fun(_) ->
                            gleam@result:'try'(
                                sqlight:exec(
                                    <<<<"PRAGMA temp_store = "/utf8,
                                            Temp_store/binary>>/binary,
                                        ";"/utf8>>,
                                    Connection
                                ),
                                fun(_) ->
                                    gleam@result:'try'(
                                        begin
                                            _pipe = gleam@option:map(
                                                erlang:element(6, Config),
                                                fun gleam@int:to_string/1
                                            ),
                                            _pipe@1 = gleam@option:map(
                                                _pipe,
                                                fun(Size) ->
                                                    sqlight:exec(
                                                        <<<<"PRAGMA mmap_size = "/utf8,
                                                                Size/binary>>/binary,
                                                            ";"/utf8>>,
                                                        Connection
                                                    )
                                                end
                                            ),
                                            gleam@option:unwrap(
                                                _pipe@1,
                                                {ok, nil}
                                            )
                                        end,
                                        fun(_) ->
                                            gleam@result:'try'(
                                                begin
                                                    _pipe@2 = gleam@option:map(
                                                        erlang:element(
                                                            7,
                                                            Config
                                                        ),
                                                        fun gleam@int:to_string/1
                                                    ),
                                                    _pipe@3 = gleam@option:map(
                                                        _pipe@2,
                                                        fun(Size@1) ->
                                                            sqlight:exec(
                                                                <<<<"PRAGMA page_size = "/utf8,
                                                                        Size@1/binary>>/binary,
                                                                    ";"/utf8>>,
                                                                Connection
                                                            )
                                                        end
                                                    ),
                                                    gleam@option:unwrap(
                                                        _pipe@3,
                                                        {ok, nil}
                                                    )
                                                end,
                                                fun(_) -> {ok, Connection} end
                                            )
                                        end
                                    )
                                end
                            )
                        end
                    )
                end
            )
        end
    ).

-spec disconnect(sqlight:connection()) -> {ok, nil} | {error, sqlight:error()}.
disconnect(Connection) ->
    _ = sqlight:exec(<<"PRAGMA optimize;"/utf8>>, Connection),
    sqlight:close(Connection).

-spec optimize(sqlight:connection()) -> {ok, nil} | {error, sqlight:error()}.
optimize(Connection) ->
    sqlight:exec(<<"PRAGMA optimize;"/utf8>>, Connection).