// Add this line at the top with other includes
#include "runtime/memory/page_pointer.h"

// Ensure that your verify_page_checksum and meta_tool_main functions are as follows
void verify_page_checksum(const std::string& file_name, const starrocks::PagePointer& page_pointer) {
    auto res = starrocks::FileSystem::Default()->new_random_access_file(file_name);
    if (!res.ok()) {
        std::cout << "open file failed: " << res.status() << std::endl;
        return;
    }
    auto input_file = std::move(res).value();

    const uint32_t page_size = page_pointer.size;
    std::unique_ptr<char[]> page(new char[page_size + starrocks::Column::APPEND_OVERFLOW_MAX_SIZE]);
    Slice page_slice(page.get(), page_size);

    input_file->read_at_fully(page_pointer.offset, page_slice.data, page_slice.size);

    uint32_t expect = starrocks::decode_fixed32_le((uint8_t*)page_slice.data + page_slice.size - 4);
    uint32_t actual = starrocks::crc32c::Value(page_slice.data, page_slice.size - 4);
    if (expect != actual) {
        std::cout << "Bad page: checksum mismatch (actual=" << actual << " vs expect=" << expect << ")";
        return;
    }
}

int meta_tool_main(int argc, char** argv) {
    // Add the below flags check before entering each condition
    if (FLAGS_operation == "dump_ordinal_index") {
        if (FLAGS_file == "") {
            std::cout << "no file flag for dump ordinal index" << std::endl;
            return -1;
        }
        if (FLAGS_column_index == -1) {
            std::cout << "no column_index flag for dump ordinal index" << std::endl;
            return -1;
        }
        dump_ordinal_index(FLAGS_file, FLAGS_column_index);
    } else if (FLAGS_operation == "verify_page_checksum") {
        if (FLAGS_file == "") {
            std::cout << "no file flag for verify page checksum" << std::endl;
            return -1;
        }
        if (FLAGS_page_offset == -1 || FLAGS_page_size == -1) {
            std::cout << "no page offset or page size flag for verify page checksum" << std::endl;
            return -1;
        }
        verify_page_checksum(FLAGS_file, {FLAGS_page_offset, FLAGS_page_size});
    } 
    // ...rest of the function
}