//! A fake 测试连接 that records each login it is given.

use super::*;

/// Same, with the host dialog's connection test answered by `tester`.
///
/// Motion is reduced, as in the other fixtures: dialogs would otherwise
/// slide in over real time, and under a loaded test run a field or button
/// can move between being found and being clicked.
pub fn open_workspace_with_tester(
    cx: &mut TestAppContext,
    store: HostStore,
    tester: Arc<FakeConnectionTester>,
) -> (WindowHandle<Root>, Entity<Workspace>) {
    cx.update(shellrs::init);
    cx.update(|cx| cx.set_reduce_motion(true));
    let mut workspace = None;
    let handle = cx.open_window(size(px(1280.), px(800.)), |window, cx| {
        let store = cx.new(|_| store);
        let remote = Arc::new(FixedRemoteTerminalTransportProvider::new(Arc::new(
            FakeTerminalFactory::default(),
        )));
        let view = cx.new(|cx| {
            Workspace::new_with_services(
                store,
                cx.new(|_| SettingsStore::in_memory()),
                remote,
                Arc::new(FakeTerminalFactory::default()),
                Arc::new(FakeSftpProvider::default()),
                Arc::new(FakeLocalDirectory::default()),
                tester.clone(),
                Arc::new(FakeForwardProvider::default()),
                window,
                cx,
            )
        });
        workspace = Some(view.clone());
        Root::new(view, window, cx)
    });
    (handle, workspace.expect("workspace created"))
}

/// `(host, port, user, password)` of one connection test.
pub type TestedLogin = (String, u16, String, Option<String>);

/// Stands in for the SSH login behind 「测试连接」: records what the form sent,
/// optionally asks to trust a made-up host key, and answers with `result`.
pub struct FakeConnectionTester {
    pub asks_trust: bool,
    pub result: Result<(), String>,
    pub requests: Mutex<Vec<TestedLogin>>,
    /// How each test was to reach the host, with the proxy password the
    /// form gave.
    pub routes: Mutex<Vec<(LoginRoute, Option<String>)>>,
    pub trust_answers: Mutex<Vec<bool>>,
}

impl Default for FakeConnectionTester {
    fn default() -> Self {
        Self {
            asks_trust: false,
            result: Ok(()),
            requests: Mutex::default(),
            routes: Mutex::default(),
            trust_answers: Mutex::default(),
        }
    }
}

impl FakeConnectionTester {
    pub fn failing(reason: &str) -> Self {
        Self {
            result: Err(reason.to_string()),
            ..Self::default()
        }
    }

    pub fn asking_trust() -> Self {
        Self {
            asks_trust: true,
            ..Self::default()
        }
    }

    pub fn requests(&self) -> Vec<TestedLogin> {
        self.requests
            .lock()
            .unwrap_or_else(|error| error.into_inner())
            .clone()
    }

    pub fn routes(&self) -> Vec<(LoginRoute, Option<String>)> {
        self.routes
            .lock()
            .unwrap_or_else(|error| error.into_inner())
            .clone()
    }

    pub fn trust_answers(&self) -> Vec<bool> {
        self.trust_answers
            .lock()
            .unwrap_or_else(|error| error.into_inner())
            .clone()
    }
}

impl ConnectionTester for FakeConnectionTester {
    fn test(&self, request: LoginTest, trust: TrustCallback) -> Result<(), String> {
        self.requests
            .lock()
            .unwrap_or_else(|error| error.into_inner())
            .push((
                request.host().to_string(),
                request.port(),
                request.user().to_string(),
                request.password().map(str::to_string),
            ));
        self.routes
            .lock()
            .unwrap_or_else(|error| error.into_inner())
            .push((
                request.login().route.clone(),
                request.proxy_password().map(str::to_string),
            ));
        if self.asks_trust {
            let ConnectionPromptKind::UnknownHost(prompt) = ConnectionPromptKind::unknown_host(
                request.host(),
                request.port(),
                "ssh-ed25519",
                "SHA256:test-fingerprint",
            ) else {
                unreachable!("unknown_host builds an UnknownHost prompt");
            };
            let trusted = trust(prompt);
            self.trust_answers
                .lock()
                .unwrap_or_else(|error| error.into_inner())
                .push(trusted);
            if !trusted {
                return Err("未信任该主机的密钥".to_string());
            }
        }
        self.result.clone()
    }
}