arcbox-core 0.6.3

use super::Runtime;
use super::assets::{check_executable, ensure_guest_binaries};
use super::kubeconfig::rewrite_kubeconfig_server;
use crate::config::Config;
use std::path::PathBuf;

#[test]
fn test_ensure_guest_binaries_ok() {
    let temp_dir = tempfile::tempdir().unwrap();
    let data_dir = temp_dir.path();
    let generation = "0.6.13";

    std::fs::create_dir_all(data_dir.join("bin")).unwrap();
    std::fs::create_dir_all(data_dir.join("runtime").join(generation).join("bin")).unwrap();

    for name in [
        "bin/arcbox-agent",
        "runtime/0.6.13/bin/dockerd",
        "runtime/0.6.13/bin/containerd",
        "runtime/0.6.13/bin/containerd-shim-runc-v2",
        "runtime/0.6.13/bin/runc",
        "runtime/0.6.13/bin/docker-init",
        "runtime/0.6.13/bin/k3s",
    ] {
        let path = data_dir.join(name);
        std::fs::write(&path, b"binary").unwrap();
        #[cfg(unix)]
        {
            use std::os::unix::fs::PermissionsExt;
            std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o755)).unwrap();
        }
    }

    let result = ensure_guest_binaries(data_dir, generation);
    assert!(result.is_ok(), "expected success, got {result:?}");
}

#[test]
fn test_ensure_guest_binaries_missing_agent() {
    let temp_dir = tempfile::tempdir().unwrap();
    let err = ensure_guest_binaries(temp_dir.path(), "0.6.13").unwrap_err();
    assert!(
        err.to_string().contains("agent binary not found"),
        "got: {err}"
    );
}

#[test]
fn test_ensure_guest_binaries_missing_runtime() {
    let temp_dir = tempfile::tempdir().unwrap();
    let data_dir = temp_dir.path();

    let agent = data_dir.join("bin/arcbox-agent");
    std::fs::create_dir_all(agent.parent().unwrap()).unwrap();
    std::fs::write(&agent, b"agent").unwrap();
    #[cfg(unix)]
    {
        use std::os::unix::fs::PermissionsExt;
        std::fs::set_permissions(&agent, std::fs::Permissions::from_mode(0o755)).unwrap();
    }

    let err = ensure_guest_binaries(data_dir, "0.6.13").unwrap_err();
    let msg = err.to_string();
    assert!(msg.contains("runtime binary"), "got: {msg}");
}

#[test]
fn test_rewrite_kubeconfig_server_updates_arcbox_refs() {
    let kubeconfig = "apiVersion: v1\nclusters:\n- cluster:\n    server: https://127.0.0.1:6443\n  name: default\ncontexts:\n- context:\n    cluster: default\n    user: default\n  name: default\ncurrent-context: default\nusers:\n- name: default\n  user: {}\n";

    let rewritten = rewrite_kubeconfig_server(kubeconfig);
    assert!(rewritten.contains("server: https://127.0.0.1:16443"));
    assert!(rewritten.contains("name: arcbox"));
    assert!(rewritten.contains("- name: arcbox"));
    assert!(rewritten.contains("cluster: arcbox"));
    assert!(rewritten.contains("user: arcbox"));
    assert!(rewritten.contains("current-context: arcbox"));
}

#[cfg(unix)]
#[test]
fn test_check_executable_not_executable() {
    use std::os::unix::fs::PermissionsExt;

    let temp_dir = tempfile::tempdir().unwrap();
    let path = temp_dir.path().join("not-exec");
    std::fs::write(&path, b"data").unwrap();
    std::fs::set_permissions(&path, std::fs::Permissions::from_mode(0o644)).unwrap();

    let err = check_executable(&path, "test").unwrap_err();
    assert!(err.to_string().contains("not executable"), "got: {err}");
}

fn networking_test_runtime() -> (Runtime, tempfile::TempDir) {
    let temp_dir = tempfile::tempdir().unwrap();
    let config = Config {
        data_dir: temp_dir.path().to_path_buf(),
        ..Default::default()
    };
    let runtime = Runtime::new(config).expect("runtime init should succeed");
    (runtime, temp_dir)
}

/// VM-host-only mode reports no milestones, because no VM starts.
///
/// The guarantee is the `!vm.autostart` early return in `init`. Four places
/// state the invariant — `InitProgress`'s docs, the `Phase` enum in
/// `api.proto`, `app/AGENTS.md`, `docs/daemon-lifecycle.md` — and nothing
/// enforced it: work moved above that return would announce `VM_STARTING`
/// for a daemon that boots no guest, and all four would quietly go false.
#[tokio::test]
async fn init_reports_no_milestones_without_a_linux_vm() {
    let temp_dir = tempfile::tempdir().unwrap();
    let mut config = Config {
        data_dir: temp_dir.path().to_path_buf(),
        ..Default::default()
    };
    config.vm.autostart = false;
    let runtime = Runtime::new(config).expect("runtime init should succeed");

    let reported = std::sync::Mutex::new(Vec::new());
    runtime
        .init(|milestone| reported.lock().unwrap().push(milestone))
        .await
        .expect("VM-host-only init only creates data directories");

    let reported = reported.into_inner().unwrap();
    assert!(reported.is_empty(), "expected silence, got {reported:?}");
}

#[tokio::test]
async fn resolve_registered_container_by_id_alias_and_prefix() {
    let (runtime, _tmp) = networking_test_runtime();
    let ip = std::net::IpAddr::V4(std::net::Ipv4Addr::LOCALHOST);
    let id = "0a1b2c3d4e5f00112233445566778899";
    runtime.register_dns(id, &["web.local".into()], ip).await;
    runtime.register_container_alias("web", id).await;

    // Exact canonical ID.
    assert_eq!(
        runtime.resolve_registered_container(id).await.as_deref(),
        Some(id)
    );
    // Name alias.
    assert_eq!(
        runtime.resolve_registered_container("web").await.as_deref(),
        Some(id)
    );
    // Unique short-ID prefix.
    assert_eq!(
        runtime
            .resolve_registered_container("0a1b2c3d4e5f")
            .await
            .as_deref(),
        Some(id)
    );
    // Unregistered token resolves to nothing.
    assert_eq!(runtime.resolve_registered_container("nope").await, None);
}

#[tokio::test]
async fn resolve_registered_container_rejects_ambiguous_prefix() {
    let (runtime, _tmp) = networking_test_runtime();
    let ip = std::net::IpAddr::V4(std::net::Ipv4Addr::LOCALHOST);
    runtime
        .register_dns("abcd1111", &["a.local".into()], ip)
        .await;
    runtime
        .register_dns("abcd2222", &["b.local".into()], ip)
        .await;

    // Prefix matching two registered IDs must not guess.
    assert_eq!(runtime.resolve_registered_container("abcd").await, None);
    // Longer, unique prefixes still resolve.
    assert_eq!(
        runtime
            .resolve_registered_container("abcd1")
            .await
            .as_deref(),
        Some("abcd1111")
    );
}

#[tokio::test]
async fn container_names_invert_aliases_and_prefer_the_shortest() {
    let (runtime, _tmp) = networking_test_runtime();
    let id = "0a1b2c3d4e5f00112233445566778899";
    // A container accreting two names: the short primary and a longer alias.
    runtime.register_container_alias("db", id).await;
    runtime
        .register_container_alias("arcbox-postgres-1", id)
        .await;
    // A second container with a single name.
    runtime.register_container_alias("cache", "beef5678").await;

    let names = runtime.container_names().await;
    assert_eq!(names.get(id).map(String::as_str), Some("db"));
    assert_eq!(names.get("beef5678").map(String::as_str), Some("cache"));
    // Unknown IDs have no name (the consumer falls back to the short ID).
    assert!(!names.contains_key("unknown"));
}

#[tokio::test]
async fn deregister_dns_clears_aliases_even_without_dns_entry() {
    let (runtime, _tmp) = networking_test_runtime();
    // Alias registered without any DNS entry (e.g. port forwarding only).
    runtime
        .register_container_alias("ports-only", "feed1234")
        .await;
    assert_eq!(
        runtime
            .resolve_registered_container("ports-only")
            .await
            .as_deref(),
        Some("feed1234")
    );

    runtime.deregister_dns_by_id("feed1234").await;
    assert_eq!(
        runtime.resolve_registered_container("ports-only").await,
        None
    );
}

#[tokio::test]
async fn sandbox_dns_cleanup_restores_same_named_container() {
    let (runtime, _tmp) = networking_test_runtime();
    let container_ip = "172.17.0.2".parse().unwrap();
    let sandbox_ip = "172.31.0.2".parse().unwrap();
    runtime
        .register_dns("container", &["same".into()], container_ip)
        .await;
    runtime.register_sandbox_dns("SAME", sandbox_ip).await;

    let entries = runtime.dns_entries.read().await;
    assert!(entries.contains_key("container"));
    assert!(entries.contains_key("sandbox:SAME"));
    drop(entries);
    assert_eq!(
        runtime.registered_container_ids().await,
        std::collections::HashSet::from(["container".to_string()])
    );
    let hosts = runtime.network_manager.local_hosts_table();
    assert_eq!(hosts.read().unwrap().get("same"), Some(&sandbox_ip));
    assert_eq!(
        hosts.read().unwrap().get("same.arcbox.local"),
        Some(&sandbox_ip)
    );

    runtime.deregister_sandbox_dns("SAME").await;
    let entries = runtime.dns_entries.read().await;
    assert!(entries.contains_key("container"));
    assert!(!entries.contains_key("sandbox:SAME"));
    drop(entries);
    assert_eq!(hosts.read().unwrap().get("same"), Some(&container_ip));
    assert_eq!(
        hosts.read().unwrap().get("same.arcbox.local"),
        Some(&container_ip)
    );
}

#[tokio::test]
async fn sandbox_dns_cleanup_restores_host_alias() {
    let (runtime, _tmp) = networking_test_runtime();
    let host_ip = "10.0.2.1".parse().unwrap();
    let sandbox_ip = "172.31.0.2".parse().unwrap();
    runtime.register_host_dns(&["host".into()], host_ip).await;
    runtime.register_sandbox_dns("host", sandbox_ip).await;

    assert!(runtime.registered_container_ids().await.is_empty());
    runtime.deregister_sandbox_dns("host").await;

    let hosts = runtime.network_manager.local_hosts_table();
    assert_eq!(hosts.read().unwrap().get("host"), Some(&host_ip));
}

#[tokio::test]
async fn shared_dns_restores_the_latest_live_owner_and_drops_old_aliases() {
    let (runtime, _tmp) = networking_test_runtime();
    let first_ip = "172.17.0.2".parse().unwrap();
    let second_ip = "172.17.0.3".parse().unwrap();
    let latest_ip = "172.17.0.4".parse().unwrap();
    runtime
        .register_dns("first", &["shared".into(), "old".into()], first_ip)
        .await;
    runtime
        .register_dns("second", &["shared".into()], second_ip)
        .await;
    runtime
        .register_dns("latest", &["shared".into()], latest_ip)
        .await;
    let hosts = runtime.network_manager.local_hosts_table();

    runtime.deregister_dns_by_id("first").await;
    assert_eq!(hosts.read().unwrap().get("shared"), Some(&latest_ip));
    assert!(!hosts.read().unwrap().contains_key("old"));

    runtime.deregister_dns_by_id("latest").await;
    assert_eq!(hosts.read().unwrap().get("shared"), Some(&second_ip));

    runtime
        .register_dns("second", &["replacement".into()], second_ip)
        .await;
    assert!(!hosts.read().unwrap().contains_key("shared"));
    assert_eq!(hosts.read().unwrap().get("replacement"), Some(&second_ip));
}

#[cfg(target_os = "macos")]
#[tokio::test]
async fn sandbox_cleanup_discovers_authority_without_secondary_indexes() {
    let (runtime, _tmp) = networking_test_runtime();
    let key = "sandbox:orphan:80/tcp".to_owned();
    runtime.inbound_rules.write().await.insert(
        key.clone(),
        (
            "missing-machine".into(),
            vec![(
                std::net::Ipv4Addr::LOCALHOST,
                45_678,
                super::InboundProtocol::Tcp,
            )],
        ),
    );
    runtime.dns_entries.write().await.insert(
        "sandbox:orphan".into(),
        super::DnsRegistration {
            hostnames: vec!["orphan".into()],
            ip: std::net::IpAddr::V4(std::net::Ipv4Addr::LOCALHOST),
            revision: 0,
        },
    );

    runtime.clear_sandbox_host_state().await;

    assert!(!runtime.inbound_rules.read().await.contains_key(&key));
    assert!(
        !runtime
            .dns_entries
            .read()
            .await
            .contains_key("sandbox:orphan")
    );
}

#[tokio::test]
async fn sandbox_cleanup_matches_the_exact_authority_owner() {
    let (runtime, _tmp) = networking_test_runtime();
    let owned = Runtime::sandbox_port_key("a", 80, "tcp");
    let other = Runtime::sandbox_port_key("a:other", 80, "tcp");

    #[cfg(target_os = "macos")]
    {
        let mut rules = runtime.inbound_rules.write().await;
        rules.insert(owned.clone(), ("missing-machine".into(), Vec::new()));
        rules.insert(other.clone(), ("missing-machine".into(), Vec::new()));
    }
    #[cfg(not(target_os = "macos"))]
    {
        let mut forwarders = runtime.port_forwarders.write().await;
        forwarders.insert(owned.clone(), super::PortForwarder::new());
        forwarders.insert(other.clone(), super::PortForwarder::new());
    }
    assert!(runtime.registered_container_ids().await.is_empty());

    runtime.remove_sandbox_ports("a").await;

    #[cfg(target_os = "macos")]
    {
        let rules = runtime.inbound_rules.read().await;
        assert!(!rules.contains_key(&owned));
        assert!(rules.contains_key(&other));
    }
    #[cfg(not(target_os = "macos"))]
    {
        let forwarders = runtime.port_forwarders.read().await;
        assert!(!forwarders.contains_key(&owned));
        assert!(forwarders.contains_key(&other));
    }
}

#[cfg(target_os = "macos")]
#[tokio::test]
async fn conflicting_sandbox_cleanup_does_not_remove_the_existing_listener() {
    use arcbox_net::darwin::inbound_relay::{InboundCommand, InboundListenerManager};

    let (runtime, _tmp) = networking_test_runtime();
    let reservation = std::net::TcpListener::bind((std::net::Ipv4Addr::LOCALHOST, 0)).unwrap();
    let host_port = reservation.local_addr().unwrap().port();
    drop(reservation);

    let (command_tx, mut command_rx) = tokio::sync::mpsc::channel(4);
    runtime.inbound_listeners.write().await.insert(
        "test-machine".into(),
        InboundListenerManager::new(command_tx),
    );
    let first = [("127.0.0.1".to_owned(), host_port, 80, "tcp".to_owned())];
    runtime
        .start_port_forwarding_for("test-machine", "sandbox:first", &first)
        .await
        .unwrap();

    let conflicting = [("127.0.0.1".to_owned(), host_port, 81, "tcp".to_owned())];
    runtime
        .start_port_forwarding_for("test-machine", "sandbox:second", &conflicting)
        .await
        .expect_err("a second owner must not reuse the first owner's listener");
    runtime.stop_port_forwarding_by_id("sandbox:second").await;

    let _connection = tokio::net::TcpStream::connect((std::net::Ipv4Addr::LOCALHOST, host_port))
        .await
        .expect("the first owner's listener must remain bound");
    let command = tokio::time::timeout(std::time::Duration::from_secs(1), command_rx.recv())
        .await
        .expect("the listener should accept the connection")
        .expect("the listener command channel should remain open");
    match command {
        InboundCommand::TcpAccepted { container_port, .. } => assert_eq!(container_port, 80),
        InboundCommand::UdpReceived { .. } => panic!("expected a TCP listener"),
    }

    runtime.stop_port_forwarding_by_id("sandbox:first").await;
}

#[test]
fn test_runtime_new_propagates_config_vm_defaults() {
    let temp_dir = tempfile::tempdir().unwrap();

    let mut config = Config {
        data_dir: temp_dir.path().to_path_buf(),
        ..Default::default()
    };
    config.vm.cpus = 6;
    config.vm.memory_mb = 3072;
    config.vm.kernel_path = Some(PathBuf::from("/tmp/arcbox-test-kernel"));

    let runtime = Runtime::new(config).expect("runtime init should succeed");
    let default_vm = runtime.vm_lifecycle().default_vm_config();

    assert_eq!(default_vm.cpus, 6);
    assert_eq!(default_vm.memory_mb, 3072);
    assert_eq!(
        default_vm.kernel,
        Some(PathBuf::from("/tmp/arcbox-test-kernel"))
    );
}

#[test]
fn resolve_bind_ip_defaults_and_loopback() {
    use std::net::Ipv4Addr;
    // Sandbox exposures pass "127.0.0.1" and must bind loopback only.
    assert_eq!(
        super::resolve_bind_ip("127.0.0.1"),
        Some(Ipv4Addr::LOCALHOST)
    );
    // Published container ports (empty / explicit 0.0.0.0) bind all interfaces.
    assert_eq!(super::resolve_bind_ip(""), Some(Ipv4Addr::UNSPECIFIED));
    assert_eq!(
        super::resolve_bind_ip("0.0.0.0"),
        Some(Ipv4Addr::UNSPECIFIED)
    );
    // A specific address is honored; garbage is rejected.
    assert_eq!(
        super::resolve_bind_ip("10.0.0.5"),
        Some(Ipv4Addr::new(10, 0, 0, 5))
    );
    assert_eq!(super::resolve_bind_ip("not-an-ip"), None);
}