#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <sys/ksys.h>
#define SIGNATURE_SIZE 8

typedef struct {
    char signature[SIGNATURE_SIZE];
    uint32_t startAddress;
    uint32_t fileSize;
    uint32_t memRequired;
    uint32_t espValue;
    uint32_t paramAddress;
    uint32_t filePathAddress;
    uint32_t tlsDataAddress;    // Only for MENUET02 signature
} ExecutableHeader;

int main(int argc, char *argv[]) {
    if (argc < 2) {
        printf("Error: Path to executable file not provided.\n");
        return 1;
    }
    
    ksys_ufile_t file = _ksys_load_file(argv[1]);
    if (file.data == NULL) {
        printf("Error: Unable to open file.\n");
        return 1;
    }

    ExecutableHeader header;

    if (file.size < sizeof(ExecutableHeader)) {
        printf("Error: Unable to read header information.\n");
        return 1;
    } else {
        memcpy(&header, file.data, sizeof(ExecutableHeader));
    }

    if (strncmp(header.signature, "MENUET01", SIGNATURE_SIZE) != 0 && strncmp(header.signature, "MENUET02", SIGNATURE_SIZE) != 0) {
        printf("Error: Invalid signature.\n");
        return 1;
    }

    printf("Version: %.*s\n", SIGNATURE_SIZE, header.signature);
    printf("Start Address: 0x%x\n", header.startAddress);
    printf("File Size: %u bytes\n", header.fileSize);
    printf("Memory Required: %u bytes\n", header.memRequired);
    printf("ESP Value: 0x%x\n", header.espValue);
    printf("Parameter Address: 0x%x\n", header.paramAddress);
    printf("File Path Address: 0x%x\n", header.filePathAddress);
    if (strncmp(header.signature, "MENUET02", SIGNATURE_SIZE) == 0) {
        printf("TLS Data Address: 0x%x\n", header.tlsDataAddress);
    }

    return 0;
}