// Basic Cloud Hypervisor SAL smoke test (minimal)
// - Skips gracefully if dependencies or inputs are missing
// - Creates a VM spec, optionally starts/stops it if all inputs are available

print("=== Cloud Hypervisor Basic Tests ===");

// Dependency checks (static binaries only)
let chs = which("cloud-hypervisor-static");
let chrs = which("ch-remote-static");

// Normalize which() results: () or "" both mean missing (depending on SAL which variant)
let ch_missing = (chs == () || chs == "");
let chr_missing = (chrs == () || chrs == "");

if ch_missing || chr_missing {
    print("⚠️  cloud-hypervisor-static and/or ch-remote-static not available - skipping CloudHV tests");
    print("Install Cloud Hypervisor static binaries to run these tests.");
    print("=== CloudHV Tests Skipped ===");
    exit();
}

// Inputs (adjust these for your environment)
// Prefer firmware boot if firmware is available; otherwise fallback to direct kernel boot.
let firmware_path = "/tmp/virt_images/hypervisor-fw";
let kernel_path = "/path/to/vmlinux"; // optional when firmware_path is present

// We can reuse the base image from the QCOW2 test/builder if present.
let disk_path = "/tmp/virt_images/noble-server-cloudimg-amd64.img";

// Validate inputs
let missing = false;
let have_firmware = exist(firmware_path);
let have_kernel = exist(kernel_path);
if !have_firmware && !have_kernel {
    print(`⚠️  neither firmware_path (${firmware_path}) nor kernel_path (${kernel_path}) found (start/stop will be skipped)`);
    missing = true;
}
if !exist(disk_path) {
    print(`⚠️  disk_path not found: ${disk_path} (start/stop will be skipped)`);
    missing = true;
}

// Unique id
let rid = run_silent("date +%s%N");
let suffix = if rid.success && rid.stdout != "" { rid.stdout.trim() } else { "100000" };
let vm_id = `testvm_${suffix}`;

print("\n--- Test 1: Create VM definition ---");
let spec = #{
    "id": vm_id,
    "disk_path": disk_path,
    "api_socket": "",          // default under VM dir
    "vcpus": 1,
    "memory_mb": 1024,
    // For firmware boot:
    // Provide firmware_path only if it exists
    // For kernel boot:
    // Provide kernel_path and optionally a cmdline
};
if have_firmware {
    spec.firmware_path = firmware_path;
} else if have_kernel {
    spec.kernel_path = kernel_path;
    spec.cmdline = "console=ttyS0 reboot=k panic=1";
}
// "extra_args": can be added if needed, e.g.:
// spec.extra_args = ["--rng", "src=/dev/urandom"];

try {
    let created_id = cloudhv_vm_create(spec);
    print(`✓ VM created: ${created_id}`);
} catch (err) {
    print(`❌ VM create failed: ${err}`);
    print("=== CloudHV Tests Aborted ===");
    exit();
}

print("\n--- Test 2: VM info ---");
try {
    let info = cloudhv_vm_info(vm_id);
    print(`✓ VM info loaded: id=${info.spec.id}, status=${info.runtime.status}`);
} catch (err) {
    print(`❌ VM info failed: ${err}`);
    print("=== CloudHV Tests Aborted ===");
    exit();
}

print("\n--- Test 3: VM list ---");
try {
    let vms = cloudhv_vm_list();
    print(`✓ VM list size: ${vms.len()}`);
} catch (err) {
    print(`❌ VM list failed: ${err}`);
    print("=== CloudHV Tests Aborted ===");
    exit();
}

// Start/Stop only if inputs exist
if !missing {
    print("\n--- Test 4: Start VM ---");
    try {
        cloudhv_vm_start(vm_id);
        print("✓ VM start invoked");
    } catch (err) {
        print(`⚠️  VM start failed (this can happen if kernel/cmdline are incompatible): ${err}`);
    }

    print("\n waiting for VM to be ready...");

    // Discover API socket and PID from SAL
    let info1 = cloudhv_vm_info(vm_id);
    let api_sock = info1.spec.api_socket;
    let pid = info1.runtime.pid;

    // 1) Wait for API socket to appear (up to ~50s)
    let sock_ok = false;
    for x in 0..50 {
        if exist(api_sock) { sock_ok = true; break; }
        sleep(1);
    }
    print(`api_sock_exists=${sock_ok} path=${api_sock}`);

    // 2) Probe ch-remote info with retries (up to ~20s)
    if sock_ok {
        let info_ok = false;
        for x in 0..20 {
            let r = run_silent(`ch-remote-static --api-socket ${api_sock} info`);
            if r.success {
                info_ok = true;
                break;
            }
            sleep(1);
        }
        if info_ok {
            print("VM API is ready (ch-remote info OK)");
        } else {
            print("⚠️ VM API did not become ready in time (continuing)");
        }
    } else {
        print("⚠️ API socket not found (continuing)");
    }

    // print("\n--- Test 5: Stop VM (graceful) ---");
    // try {
    //     cloudhv_vm_stop(vm_id, false);
    //     print("✓ VM stop invoked (graceful)");
    // } catch (err) {
    //     print(`⚠️  VM stop failed: ${err}`);
    // }
} else {
    print("\n⚠️  Skipping start/stop because required inputs are missing.");
}

// print("\n--- Test 6: Delete VM definition ---");
// try {
//     cloudhv_vm_delete(vm_id, false);
//     print("✓ VM deleted");
// } catch (err) {
//     print(`❌ VM delete failed: ${err}`);
//     print("=== CloudHV Tests Aborted ===");
//     exit();
// }

print("\n=== Cloud Hypervisor Basic Tests Completed ===");