sample :: "11-22,95-115,998-1012,1188511880-1188511890,222220-222224,1698522-1698528,446443-446449,38593856-38593862,565653-565659,824824821-824824827,2121212118-2121212124";

// sample :: "11-22";

Chunk :: struct {
    chunks: [..]string;
    original: string;
}

solve_second :: (input: string, enable_debug_logging := false) {
    duplicate_sum := 0;
    int_sb: String_Builder;
    for range: split(input, ",") {
        if enable_debug_logging print("%\n", range);
        found, left_str, right_str := split_from_left(range, #char "-");
        assert(found);
        left := parse_int(*left_str);
        right := parse_int(*right_str);
        for i: left..right {
            print_to_builder(*int_sb, "%", i);
            i_str := builder_to_string(*int_sb);
            for split_into_even_chunks(i_str) {
                if all_equal(array_view(it.chunks, 0)) {
                    if enable_debug_logging print_vars(it);
                    duplicate_sum += i;
                    break;
                }
            }
        }
    }
    print_vars(duplicate_sum);
}

main :: () {
    content := read_entire_file("day2.input");
    solve_second(content);
}

split_into_even_chunks :: (s: string) -> [..]Chunk {
    result: [..]Chunk;
    for chunk_len: 1..s.count / 2 {
        if s.count % chunk_len != 0 continue;

        chunks := Chunk.{original=s};
        num_chunks := s.count / chunk_len;
        chunk_i := 0;
        for chunk_i: 0..num_chunks - 1 {
            array_add(*chunks.chunks, string.{data=s.data + (chunk_i * chunk_len), count = chunk_len});
        }
        array_add(*result, chunks);
    }

    return result;
}

all_equal :: (strs: []string) -> bool {
    for i: 0..strs.count - 2 {
        if strs[i] != strs[i + 1] return false;
    }
    return true;
}

#import "Basic";
#import "File";
#import "String";
#import "Print_Vars";