// Basic tests for QCOW2 SAL (offline, will skip if qemu-img is not present)

print("=== QCOW2 Basic Tests ===");

// Dependency check
let qemu = which("qemu-img");
if qemu == () {
    print("⚠️  qemu-img not available - skipping QCOW2 tests");
    print("Install qemu-utils (Debian/Ubuntu) or QEMU tools for your distro.");
    print("=== QCOW2 Tests Skipped ===");
    exit();
}

// Helper: unique temp path (use monotonic timestamp; avoid shell quoting issues)
let now = run_silent("date +%s%N");
let suffix = if now.success && now.stdout != "" { now.stdout.trim() } else { "100000" };
let img_path = `/tmp/qcow2_test_${suffix}.img`;

print("\n--- Test 1: Create image ---");
try {
    let created_path = qcow2_create(img_path, 1);
    // created_path should equal img_path
    print(`✓ Created qcow2: ${created_path}`);
} catch (err) {
    print(`❌ Create failed: ${err}`);
    exit();
}

print("\n--- Test 2: Info ---");
let info;
try {
    info = qcow2_info(img_path);
} catch (err) {
    print(`❌ Info failed: ${err}`);
    exit();
}
print("✓ Info fetched");
if info.format != () { print(`  format: ${info.format}`); }
if info["virtual-size"] != () { print(`  virtual-size: ${info["virtual-size"]}`); }

print("\n--- Test 3: Snapshot create/list/delete (offline) ---");
let snap_name = "s1";
try {
    qcow2_snapshot_create(img_path, snap_name);
} catch (err) {
    print(`❌ snapshot_create failed: ${err}`);
    exit();
}
print("✓ snapshot created: s1");

let snaps;
try {
    snaps = qcow2_snapshot_list(img_path);
} catch (err) {
    print(`❌ snapshot_list failed: ${err}`);
    exit();
}
print(`✓ snapshot_list ok, count=${snaps.len()}`);

try {
    qcow2_snapshot_delete(img_path, snap_name);
} catch (err) {
    print(`❌ snapshot_delete failed: ${err}`);
    exit();
}
print("✓ snapshot deleted: s1");

// Optional: Base image builder (commented to avoid big downloads by default)
// Uncomment to test manually on a dev machine with bandwidth.
// print("\n--- Optional: Build Ubuntu 24.04 Base ---");
// let base_dir = "/tmp/virt_images";
// let base = qcow2_build_ubuntu_24_04_base(base_dir, 10);
// if base.is_err() {
//     print(`⚠️  base build failed or skipped: ${base.unwrap_err()}`);
// } else {
//     let m = base.unwrap();
//     print(`✓ Base image path: ${m.base_image_path}`);
//     print(`✓ Base snapshot: ${m.snapshot}`);
//     print(`✓ Source URL: ${m.url}`);
//     if m.resized_to_gb != () { print(`✓ Resized to: ${m.resized_to_gb}G`); }
// }

print("\n=== QCOW2 Basic Tests Completed ===");