-module(pathern@internal@parser).
-compile([no_auto_import, nowarn_unused_vars, nowarn_unused_function, nowarn_nomatch]).

-export([parse/2]).

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 90).
-spec parse_param(binary(), binary()) -> binary().
parse_param(Path, Accum) ->
    case gleam@string:first(Path) of
        {ok, Grapheme} ->
            case Grapheme of
                <<"/"/utf8>> ->
                    Accum;

                _ ->
                    parse_param(
                        gleam@string:drop_start(Path, 1),
                        <<Accum/binary, Grapheme/binary>>
                    )
            end;

        {error, _} ->
            Accum
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 101).
-spec first_or_none(list(FCI)) -> gleam@option:option(FCI).
first_or_none(Items) ->
    case gleam@list:first(Items) of
        {ok, Item} ->
            {some, Item};

        {error, _} ->
            none
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 108).
-spec find_slash(binary(), integer()) -> {ok, integer()} | {error, nil}.
find_slash(Path, Index) ->
    case gleam@string:first(Path) of
        {ok, <<"/"/utf8>>} ->
            {ok, Index};

        {ok, _} ->
            find_slash(gleam@string:drop_start(Path, 1), Index + 1);

        {error, _} ->
            {error, nil}
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 142).
-spec match_literal_grapheme(binary(), binary(), integer()) -> {ok, nil} |
    {error, nil}.
match_literal_grapheme(Grapheme, Literal, Checking_index) ->
    case gleam@string:first(gleam@string:drop_start(Literal, Checking_index)) of
        {ok, Literal_grapheme} when Literal_grapheme =:= Grapheme ->
            {ok, nil};

        {ok, _} ->
            {error, nil};

        {error, _} ->
            {error, nil}
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 116).
-spec find_literal(binary(), binary(), integer(), integer()) -> {ok, integer()} |
    {error, nil}.
find_literal(Path, Literal, Checking_index, Index) ->
    Literal_length = string:length(Literal),
    case gleam@string:first(Path) of
        {ok, Grapheme} ->
            case match_literal_grapheme(Grapheme, Literal, Checking_index) of
                {ok, _} when Literal_length =:= (Checking_index + 1) ->
                    {ok, Index};

                {ok, _} ->
                    find_literal(
                        gleam@string:drop_start(Path, 1),
                        Literal,
                        Checking_index + 1,
                        Index
                    );

                {error, _} ->
                    find_literal(
                        gleam@string:drop_start(Path, 1),
                        Literal,
                        0,
                        Index + 1
                    )
            end;

        {error, _} ->
            {error, nil}
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 42).
-spec parse_token(
    pathern@internal@lexer:token(),
    gleam@option:option(pathern@internal@lexer:token()),
    binary(),
    gleam@dict:dict(binary(), binary())
) -> {ok, {gleam@dict:dict(binary(), binary()), binary()}} | {error, nil}.
parse_token(Token, Next_token, Path, Params) ->
    case erlang:element(2, Token) of
        slash ->
            case gleam@string:slice(Path, 0, erlang:element(4, Token)) of
                <<""/utf8>> ->
                    {error, nil};

                Val ->
                    case Val =:= erlang:element(5, Token) of
                        true ->
                            {ok,
                                {Params,
                                    gleam@string:drop_start(
                                        Path,
                                        erlang:element(4, Token)
                                    )}};

                        false ->
                            {error, nil}
                    end
            end;

        literal ->
            case gleam@string:slice(Path, 0, erlang:element(4, Token)) of
                <<""/utf8>> ->
                    {error, nil};

                Val ->
                    case Val =:= erlang:element(5, Token) of
                        true ->
                            {ok,
                                {Params,
                                    gleam@string:drop_start(
                                        Path,
                                        erlang:element(4, Token)
                                    )}};

                        false ->
                            {error, nil}
                    end
            end;

        param ->
            Param = parse_param(Path, <<""/utf8>>),
            Params@1 = gleam@dict:insert(
                Params,
                erlang:element(5, Token),
                Param
            ),
            {ok,
                {Params@1, gleam@string:drop_start(Path, string:length(Param))}};

        wildcard ->
            case Next_token of
                {some, Next_token@1} ->
                    case erlang:element(2, Next_token@1) of
                        slash ->
                            case find_slash(Path, 0) of
                                {ok, Index} ->
                                    {ok,
                                        {Params,
                                            gleam@string:drop_start(Path, Index)}};

                                {error, _} ->
                                    {error, nil}
                            end;

                        literal ->
                            case find_literal(
                                gleam@string:drop_start(Path, 1),
                                erlang:element(5, Next_token@1),
                                0,
                                0
                            ) of
                                {ok, Index@1} ->
                                    {ok,
                                        {Params,
                                            gleam@string:drop_start(
                                                Path,
                                                Index@1 + 1
                                            )}};

                                {error, _} ->
                                    {error, nil}
                            end;

                        _ ->
                            {ok, {Params, <<""/utf8>>}}
                    end;

                none ->
                    {ok, {Params, <<""/utf8>>}}
            end;

        _ ->
            {error, nil}
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 15).
-spec parse_tokens(
    list(pathern@internal@lexer:token()),
    binary(),
    gleam@dict:dict(binary(), binary())
) -> {ok, gleam@dict:dict(binary(), binary())} | {error, nil}.
parse_tokens(Tokens, Path, Params) ->
    case Tokens of
        [Token] when erlang:element(2, Token) =:= slash ->
            case (Path =:= <<"/"/utf8>>) orelse (Path =:= <<""/utf8>>) of
                true ->
                    {ok, Params};

                false ->
                    {error, nil}
            end;

        [Head | Rest] ->
            case parse_token(Head, first_or_none(Rest), Path, Params) of
                {ok, {Params@1, New_path}} ->
                    parse_tokens(Rest, New_path, Params@1);

                {error, _} ->
                    {error, nil}
            end;

        [] ->
            case gleam@string:is_empty(Path) orelse (Path =:= <<"/"/utf8>>) of
                true ->
                    {ok, Params};

                false ->
                    {error, nil}
            end
    end.

-file("/home/ram/code/gleam/pathern/src/pathern/internal/parser.gleam", 7).
-spec parse(binary(), list(pathern@internal@lexer:token())) -> {ok,
        gleam@dict:dict(binary(), binary())} |
    {error, nil}.
parse(Path, Tokens) ->
    Params = maps:new(),
    parse_tokens(Tokens, Path, Params).