/*
 * cfd_test - Chronological Field Displacement test harness
 * v0.7.2-rc1
 */

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

#define LOCKFILE "/tmp/.cfd_displacement.lock"

void msleep(int ms) {
    usleep(ms * 1000);
}

int main(int argc, char *argv[]) {
    if (argc < 2) {
        fprintf(stderr, "Usage: %s <target_epoch>\n", argv[0]);
        fprintf(stderr, "  target_epoch: \"YYYY-MM-DD HH:MM:SS\"\n");
        return 1;
    }

    /* Check if displacement has already occurred */
    if (access(LOCKFILE, F_OK) == 0) {
        printf("cfd_test v0.7.2-rc1\n\n");
        printf("ERROR: Cannot initialize displacement field array.\n");
        printf("  /dev/cfd0: No such device\n");
        printf("  /dev/cfd1: No such device\n\n");
        printf("Required hardware not found. If the field array was\n");
        printf("previously operational, check physical connections\n");
        printf("and power supply to the cavity assembly.\n\n");
        printf("See docs/hardware-troubleshooting.md for details.\n");
        return 1;
    }

    char *target = argv[1];

    printf("cfd_test v0.7.2-rc1\n");
    printf("Target epoch: %s\n", target);
    printf("Mode: dry-run (coils disengaged)\n\n");

    printf("Pre-flight checks:\n");
    fflush(stdout); msleep(200);
    printf("  cavity resonance     7.832 THz    [ok]\n");
    msleep(120);
    printf("  metric stability     0.9997       [ok]\n");
    msleep(120);
    printf("  flux density         2.41e+18     [ok]\n");
    msleep(120);
    printf("  consistency check    satisfied     [ok]\n");
    msleep(120);
    printf("  angular momentum     nominal      [ok]\n");
    msleep(100);
    printf("  field bleed-through  0.003%%        [ok] (< 0.01%% threshold)\n\n");

    printf("All checks passed. Starting dry-run sequence...\n\n");
    fflush(stdout); msleep(400);

    printf("  coil simulation: ");
    fflush(stdout);
    for (int i = 0; i <= 100; i += 5) {
        printf("\r  coil simulation: %3d%%", i);
        fflush(stdout);
        msleep(60);
    }
    printf("  done\n");
    fflush(stdout); msleep(200);

    printf("\n  WARNING: field bleed-through rising\n");
    printf("    0.003%% -> 0.08%% -> 0.6%%");
    fflush(stdout); msleep(300);
    printf(" -> 4.2%%");
    fflush(stdout); msleep(200);
    printf(" -> 31.7%%");
    fflush(stdout); msleep(200);
    printf(" -> 89.4%%\n\n");
    fflush(stdout); msleep(200);

    printf("  ERROR: displacement field active - Loss of dry-run isolation\n");
    printf("  Attempting emergency shutdown...\n");
    fflush(stdout); msleep(500);
    printf("  Shutdown failed: field is self-sustaining\n\n");
    fflush(stdout); msleep(300);

    printf("  Displacement lock: %s\n", target);
    printf("  Field collapsing...");
    fflush(stdout); msleep(600);
    printf(" done\n\n");

    printf("  ---\n");
    printf("  Displacement event recorded.\n");
    printf("  Current epoch: %s\n", target);
    printf("  Return vector: none (field energy depleted)\n");
    printf("  ---\n\n");

    printf("  Log written to ./cfd_test.log\n");

    /* Create lockfile */
    FILE *lock = fopen(LOCKFILE, "w");
    if (lock) {
        fprintf(lock, "epoch=%s\n", target);
        fclose(lock);
    }

    return 0;
}