-module(cigogne@internal@migration_parser).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).
-define(FILEPATH, "src/cigogne/internal/migration_parser.gleam").
-export([parse_file_name/1, parse_migration_file/1]).
-export_type([query_context/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(false).

-type query_context() :: simple_context |
    in_string_literal |
    {in_dollar_quoted, binary()} |
    {in_dollar_tag, list(binary()), gleam@option:option(binary())}.

-file("src/cigogne/internal/migration_parser.gleam", 16).
?DOC(false).
-spec parse_file_name(binary()) -> {ok,
        {gleam@time@timestamp:timestamp(), binary()}} |
    {error, cigogne@types:migrate_error()}.
parse_file_name(Path) ->
    gleam@bool:guard(
        not gleam_stdlib:string_ends_with(Path, <<".sql"/utf8>>),
        {error, {file_name_error, Path}},
        fun() ->
            gleam@result:'try'(
                begin
                    _pipe = gleam@string:split(Path, <<"/"/utf8>>),
                    _pipe@1 = gleam@list:last(_pipe),
                    _pipe@2 = gleam@result:map(
                        _pipe@1,
                        fun(_capture) -> gleam@string:drop_end(_capture, 4) end
                    ),
                    _pipe@3 = gleam@result:'try'(
                        _pipe@2,
                        fun(_capture@1) ->
                            gleam@string:split_once(_capture@1, <<"-"/utf8>>)
                        end
                    ),
                    gleam@result:replace_error(_pipe@3, {file_name_error, Path})
                end,
                fun(Ts_and_name) ->
                    gleam@result:'try'(
                        cigogne@internal@migrations_utils:parse_migration_timestamp(
                            erlang:element(1, Ts_and_name)
                        ),
                        fun(Ts) ->
                            gleam@result:'try'(
                                cigogne@internal@migrations_utils:check_name(
                                    erlang:element(2, Ts_and_name)
                                ),
                                fun(Name) -> _pipe@4 = {Ts, Name},
                                    {ok, _pipe@4} end
                            )
                        end
                    )
                end
            )
        end
    ).

-file("src/cigogne/internal/migration_parser.gleam", 184).
?DOC(false).
-spec add_if_not_empty(list(binary()), list(binary())) -> list(binary()).
add_if_not_empty(String_list, Graphemes_to_add) ->
    case Graphemes_to_add of
        [] ->
            String_list;

        _ ->
            [begin
                    _pipe = Graphemes_to_add,
                    _pipe@1 = lists:reverse(_pipe),
                    gleam@string:join(_pipe@1, <<""/utf8>>)
                end |
                String_list]
    end.

-file("src/cigogne/internal/migration_parser.gleam", 97).
?DOC(false).
-spec analyse_sql_graphemes(
    list(binary()),
    list(binary()),
    query_context(),
    list(binary())
) -> {ok, list(binary())} | {error, binary()}.
analyse_sql_graphemes(Sql_graphemes, Previous_graphemes, Context, Queries) ->
    case {Sql_graphemes, Context} of
        {[], simple_context} ->
            _pipe = Queries,
            _pipe@1 = add_if_not_empty(_pipe, Previous_graphemes),
            {ok, _pipe@1};

        {[], _} ->
            {error, <<"Migration badly formated: Unfinished literal"/utf8>>};

        {[<<";"/utf8>> | Rest], simple_context} ->
            analyse_sql_graphemes(
                Rest,
                [],
                simple_context,
                begin
                    _pipe@2 = Queries,
                    add_if_not_empty(_pipe@2, Previous_graphemes)
                end
            );

        {[<<"'"/utf8>> | Rest@1], simple_context} ->
            analyse_sql_graphemes(
                Rest@1,
                [<<"'"/utf8>> | Previous_graphemes],
                in_string_literal,
                Queries
            );

        {[<<"'"/utf8>> | Rest@2], in_string_literal} ->
            analyse_sql_graphemes(
                Rest@2,
                [<<"'"/utf8>> | Previous_graphemes],
                simple_context,
                Queries
            );

        {[<<"$"/utf8>> | Rest@3], simple_context} ->
            analyse_sql_graphemes(
                Rest@3,
                [<<"$"/utf8>> | Previous_graphemes],
                {in_dollar_tag, [], none},
                Queries
            );

        {[<<"$"/utf8>> | Rest@4], {in_dollar_tag, Tag, none}} ->
            analyse_sql_graphemes(
                Rest@4,
                [<<"$"/utf8>> | Previous_graphemes],
                {in_dollar_quoted,
                    begin
                        _pipe@3 = Tag,
                        _pipe@4 = lists:reverse(_pipe@3),
                        gleam@string:join(_pipe@4, <<""/utf8>>)
                    end},
                Queries
            );

        {[<<"$"/utf8>> | Rest@5], {in_dollar_tag, Tag_graphemes, {some, Tag@1}}} ->
            analyse_sql_graphemes(
                Rest@5,
                [<<"$"/utf8>> | Previous_graphemes],
                case begin
                    _pipe@5 = Tag_graphemes,
                    _pipe@6 = lists:reverse(_pipe@5),
                    gleam@string:join(_pipe@6, <<""/utf8>>)
                end of
                    A when A =:= Tag@1 ->
                        simple_context;

                    _ ->
                        {in_dollar_quoted, Tag@1}
                end,
                Queries
            );

        {[<<"$"/utf8>> | Rest@6], {in_dollar_quoted, Tag@2}} ->
            analyse_sql_graphemes(
                Rest@6,
                [<<"$"/utf8>> | Previous_graphemes],
                {in_dollar_tag, [], {some, Tag@2}},
                Queries
            );

        {[G | Rest@7], {in_dollar_tag, [], Parent}} ->
            analyse_sql_graphemes(Rest@7, [G | Previous_graphemes], case G of
                    <<"0"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"1"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"2"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"3"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"4"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"5"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"6"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"7"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"8"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    <<"9"/utf8>> ->
                        case Parent of
                            none ->
                                simple_context;

                            {some, Tag@3} ->
                                {in_dollar_quoted, Tag@3}
                        end;

                    _ ->
                        {in_dollar_tag, [G], Parent}
                end, Queries);

        {[G@1 | Rest@8], {in_dollar_tag, Tag_graphemes@1, Parent@1}} ->
            analyse_sql_graphemes(
                Rest@8,
                [G@1 | Previous_graphemes],
                {in_dollar_tag, [G@1 | Tag_graphemes@1], Parent@1},
                Queries
            );

        {[G@2 | Rest@9], Ctx} ->
            analyse_sql_graphemes(
                Rest@9,
                [G@2 | Previous_graphemes],
                Ctx,
                Queries
            )
    end.

-file("src/cigogne/internal/migration_parser.gleam", 75).
?DOC(false).
-spec split_queries(binary()) -> {ok, list(binary())} | {error, binary()}.
split_queries(Queries) ->
    Graphemes = begin
        _pipe = Queries,
        gleam@string:to_graphemes(_pipe)
    end,
    gleam@result:'try'(
        analyse_sql_graphemes(Graphemes, [], simple_context, []),
        fun(Queries@1) -> _pipe@1 = Queries@1,
            _pipe@2 = lists:reverse(_pipe@1),
            _pipe@3 = gleam@list:map(_pipe@2, fun gleam@string:trim/1),
            _pipe@4 = gleam@list:filter(
                _pipe@3,
                fun(Q) -> not gleam@string:is_empty(Q) end
            ),
            _pipe@5 = gleam@list:map(
                _pipe@4,
                fun(Q@1) -> <<Q@1/binary, ";"/utf8>> end
            ),
            {ok, _pipe@5} end
    ).

-file("src/cigogne/internal/migration_parser.gleam", 38).
?DOC(false).
-spec parse_migration_file(binary()) -> {ok, {list(binary()), list(binary())}} |
    {error, binary()}.
parse_migration_file(Content) ->
    case gleam@string:split_once(Content, <<"--- migration:up"/utf8>>) of
        {error, _} ->
            {error,
                <<<<"File badly formatted: '"/utf8, "--- migration:up"/utf8>>/binary,
                    "' not found !"/utf8>>};

        {ok, {_, Up_and_rest}} ->
            case gleam@string:split_once(
                Up_and_rest,
                <<"--- migration:down"/utf8>>
            ) of
                {error, _} ->
                    {error,
                        <<<<"File badly formatted: '"/utf8,
                                "--- migration:down"/utf8>>/binary,
                            "' not found !"/utf8>>};

                {ok, {Up, Down_and_rest}} ->
                    case gleam@string:split_once(
                        Down_and_rest,
                        <<"--- migration:end"/utf8>>
                    ) of
                        {error, _} ->
                            {error,
                                <<<<"File badly formatted: '"/utf8,
                                        "--- migration:end"/utf8>>/binary,
                                    "' not found !"/utf8>>};

                        {ok, {Down, _}} ->
                            gleam@result:'try'(
                                split_queries(Up),
                                fun(Queries_up) ->
                                    gleam@result:'try'(
                                        split_queries(Down),
                                        fun(Queries_down) ->
                                            case {Queries_up, Queries_down} of
                                                {[], _} ->
                                                    {error,
                                                        <<"migration:up is empty !"/utf8>>};

                                                {_, []} ->
                                                    {error,
                                                        <<"migration:down is empty !"/utf8>>};

                                                {Ups, Downs} ->
                                                    {ok, {Ups, Downs}}
                                            end
                                        end
                                    )
                                end
                            )
                    end
            end
    end.