/* spl_cli.c — SIR VM launcher
 *
 * Loads a compiled .sir binary and runs it via the SIR VM.
 * Built-in syscalls are auto-registered via spl_syscall_register().
 *
 * Usage:
 *   spl_cli [-d] <file.sir> [entry_point]
 */

#include "spl_mcode.h"
#include "spl_syscall.h"
#include "spl_vm.h"

#include <stdio.h>
#include <string.h>

int main(int argc, const char **argv) {
    int debug_mode = 0;
    int arg_idx = 1;

    if (argc >= 2 && strcmp(argv[1], "-d") == 0) {
        debug_mode = 1;
        arg_idx = 2;
    }

    if (arg_idx >= argc) {
        fprintf(stderr, "Usage: spl_cli [-d] <file.sir> [entry_point]\n");
        return 1;
    }

    const char *path = argv[arg_idx];
    const char *entry = argc >= arg_idx + 2 ? argv[arg_idx + 1] : "main";

    spl_prog_t prog;
    if (spl_prog_load_from_file(path, &prog) != 0) {
        fprintf(stderr, "spl_cli: cannot load '%s'\n", path);
        return 1;
    }

    spl_syscall_register(&prog);

    spl_vm_t vm;
    spl_vm_init(&vm);
    if (debug_mode) spl_vm_set_debug(&vm, 1);
    if (spl_vm_load_prog(&vm, &prog) != 0) {
        fprintf(stderr, "vm: prog '%s' not found\n", entry);
        spl_prog_drop(&prog);
        return 1;
    }
    if (spl_vm_prepare(&vm, entry, argc, argv, NULL) != 0) {
        fprintf(stderr, "vm: entry point '%s' not found\n", entry);
        spl_prog_drop(&prog);
        return 1;
    }

    int ret = spl_vm_run_until(&vm, 0);
    spl_vm_drop(&vm);
    spl_prog_drop(&prog);

    if (ret < 0) {
        fprintf(stderr, "spl_cli: VM error (exit_code=%d)\n", vm.exit_code);
        return (int)vm.exit_code;
    }
    return (int)vm.exit_code;
}