use proxywarden_lib::proxifyre_ownership::verify_managed_proxifyre_install;
use serde_json::json;
use std::{fs, path::PathBuf};

#[test]
fn accepts_matching_managed_install_and_returns_packet_filter_ownership() {
    let fixture = ManagedInstallFixture::new("owned");
    fixture.write_marker(true, &fixture.install_dir);

    let ownership = verify_managed_proxifyre_install(
        &fixture.install_dir,
        &fixture.executable_path,
        &fixture.install_dir,
    )
    .expect("matching marker should prove ownership");

    assert_eq!(ownership.service_name, "ProxiFyreService");
    assert!(ownership.remove_packet_filter);
}

#[test]
fn rejects_install_outside_expected_managed_directory() {
    let fixture = ManagedInstallFixture::new("unexpected-root");
    fixture.write_marker(true, &fixture.install_dir);
    let other_root = fixture
        .root
        .join("other")
        .join("components")
        .join("ProxiFyre");
    fs::create_dir_all(&other_root).expect("other root should be created");

    let error = verify_managed_proxifyre_install(
        &fixture.install_dir,
        &fixture.executable_path,
        &other_root,
    )
    .expect_err("a detected portable install must not be recursively removed");

    assert!(error.contains("не является управляемой папкой"));
}

#[test]
fn rejects_marker_with_mismatched_install_root() {
    let fixture = ManagedInstallFixture::new("mismatched-marker");
    fixture.write_marker(false, &fixture.root);

    let error = verify_managed_proxifyre_install(
        &fixture.install_dir,
        &fixture.executable_path,
        &fixture.install_dir,
    )
    .expect_err("marker installRoot must match the managed directory");

    assert!(error.contains("installRoot из marker"));
}

#[test]
fn rejects_marker_with_foreign_service_name() {
    let fixture = ManagedInstallFixture::new("foreign-service");
    fixture.write_custom_marker(json!({
        "manager": "ProxyWarden",
        "component": "proxifyre",
        "serviceName": "ForeignProxyService",
        "installRoot": fixture.install_dir,
        "packetFilterInstalledByProxyWarden": true
    }));

    let error = verify_managed_proxifyre_install(
        &fixture.install_dir,
        &fixture.executable_path,
        &fixture.install_dir,
    )
    .expect_err("foreign service name must not be trusted");

    assert!(error.contains("неподдерживаемое имя службы"));
}

#[test]
fn missing_packet_filter_flag_defaults_to_not_owned() {
    let fixture = ManagedInstallFixture::new("shared-driver");
    fixture.write_custom_marker(json!({
        "manager": "ProxyWarden",
        "component": "proxifyre",
        "serviceName": "ProxiFyreService",
        "installRoot": fixture.install_dir
    }));

    let ownership = verify_managed_proxifyre_install(
        &fixture.install_dir,
        &fixture.executable_path,
        &fixture.install_dir,
    )
    .expect("valid marker without ownership flag should remain safe");

    assert!(!ownership.remove_packet_filter);
}

struct ManagedInstallFixture {
    root: PathBuf,
    install_dir: PathBuf,
    executable_path: PathBuf,
}

impl ManagedInstallFixture {
    fn new(label: &str) -> Self {
        let root = std::env::temp_dir().join(format!(
            "proxywarden-ownership-{label}-{}",
            uuid::Uuid::new_v4().hyphenated()
        ));
        let install_dir = root.join("components").join("ProxiFyre");
        let executable_path = install_dir.join("ProxiFyre.exe");
        fs::create_dir_all(&install_dir).expect("managed install directory should be created");
        fs::write(&executable_path, b"fixture").expect("fixture executable should be written");

        Self {
            root,
            install_dir,
            executable_path,
        }
    }

    fn write_marker(&self, packet_filter_owned: bool, install_root: &std::path::Path) {
        self.write_custom_marker(json!({
            "manager": "ProxyWarden",
            "component": "proxifyre",
            "serviceName": "ProxiFyreService",
            "installRoot": install_root,
            "packetFilterInstalledByProxyWarden": packet_filter_owned
        }));
    }

    fn write_custom_marker(&self, marker: serde_json::Value) {
        fs::write(
            self.install_dir.join("proxywarden-component.json"),
            serde_json::to_vec_pretty(&marker).expect("marker should serialize"),
        )
        .expect("marker should be written");
    }
}

impl Drop for ManagedInstallFixture {
    fn drop(&mut self) {
        let _ = fs::remove_dir_all(&self.root);
    }
}