#[cfg(target_os = "macos")]
fn main() {
    use std::sync::{
        atomic::{AtomicBool, AtomicUsize, Ordering},
        Arc,
    };
    use tauri::{webview::PageLoadEvent, Manager};

    let startup = std::env::var("KANBANGIT_SMOKE_STARTUP").unwrap_or_default();
    let online = startup == "online";
    let needs_setup = matches!(startup.as_str(), "missing" | "invalid");
    let passed = Arc::new(AtomicBool::new(false));
    let stage = Arc::new(AtomicUsize::new(0));
    let page_stage = stage.clone();
    let result_passed = passed.clone();
    let setup_passed = passed.clone();
    let plugin = tauri::plugin::Builder::<tauri::Wry>::new("macos-smoke")
        .setup(move |app, _| {
            let directory = app.path().app_config_dir()?;
            std::fs::create_dir_all(&directory)?;
            if needs_setup {
                if startup == "invalid" {
                    std::fs::write(directory.join("active-server"), "invalid configuration")?;
                }
                return Ok(());
            }
            let server = if online { "https://kanbangit.de/" } else { "https://127.0.0.1:9/" };
            std::fs::write(directory.join("active-server"), format!("{server}\n0123456789abcdef0123456789abcdef"))?;
            Ok(())
        })
        .js_init_script(r#"
            if (location.protocol === 'tauri:') {
                window.__selectionFlashed = false;
                new MutationObserver(() => {
                    const selection = document.querySelector('#workspace-settings');
                    const phase = document.querySelector('#connection-status')?.dataset.state;
                    if (selection && !selection.hidden && phase !== 'connectionError') window.__selectionFlashed = true;
                }).observe(document, { subtree: true, attributes: true, childList: true });
            }
        "#)
        .js_init_script("window.addEventListener('error', event => { location.href = 'tauri://localhost/?smoke=result&passed=false&error=' + encodeURIComponent(event.message || event.target.src); }, true);")
        .on_page_load(move |webview, payload| {

            eprintln!("Smoke load: {} {:?} {}", webview.label(), payload.event(), payload.url());
            if payload.event() != PageLoadEvent::Finished {
                return;
            }
            if webview.label() == "launcher" {
                if needs_setup {
                    let app = webview.app_handle().clone();
                    let passed = setup_passed.clone();
                    std::thread::spawn(move || {
                        std::thread::sleep(std::time::Duration::from_millis(200));
                        let handle = app.clone();
                        app.run_on_main_thread(move || {
                            let launcher = handle.get_webview_window("launcher").unwrap();
                            assert!(launcher.is_visible().unwrap(), "First launch and invalid configuration must show setup");
                            assert!(!handle.webview_windows().keys().any(|label| label.starts_with("workspace-")));
                            passed.store(true, Ordering::SeqCst);
                            launcher.close().unwrap();
                        }).unwrap();
                    });
                    return;
                }
                assert!(!webview.app_handle().get_webview_window("launcher").unwrap().is_visible().unwrap(), "Saved startup must not show the native launcher window");
                if online { return; }
                webview.eval(r#"
                    (async () => {
                        const wait = async predicate => {
                            for (let attempt = 0; attempt < 220; attempt++) {
                                if (predicate()) return;
                                await new Promise(resolve => setTimeout(resolve, 100));
                            }
                            throw new Error('Timed out waiting for local state');
                        };
                        try {
                            await wait(() => document.querySelector('#connection-status')?.dataset.state === 'connectionError');
                            if (window.__selectionFlashed) throw new Error('Workspace selection flashed during saved startup');
                            if (document.querySelector('#server-url').value !== 'https://127.0.0.1:9/') throw new Error('Saved workspace was discarded');
                            const input = document.querySelector('#server-url');
                            const form = document.querySelector('#server-form');
                            const status = document.querySelector('#connection-status');
                            input.value = 'http://example.com';
                            form.requestSubmit();
                            if (input.getAttribute('aria-invalid') !== 'true' || !status.textContent.includes('HTTPS')) throw new Error('Invalid address accepted');
                            for (const [theme, expected] of [['dark', 'rgb(15, 23, 42)'], ['light', 'rgb(247, 249, 251)']]) {
                                const appearance = document.querySelector('#appearance');
                                appearance.value = theme;
                                appearance.dispatchEvent(new Event('change'));
                                if (getComputedStyle(document.documentElement).backgroundColor !== expected) throw new Error('Theme failed');
                            }
                            input.value = 'https://127.0.0.1:9/';
                            form.requestSubmit();
                            await wait(() => status.dataset.state === 'connecting');
                            await wait(() => status.dataset.state === 'connectionError');
                            if (input.value !== 'https://127.0.0.1:9/' || document.querySelector('.open-workspace').disabled) throw new Error('Offline recovery failed');
                            input.value = 'https://kanbangit.de/';
                            form.requestSubmit();
                            if (document.querySelector('#switch-confirmation').hidden) throw new Error('Missing switch confirmation');
                            document.querySelector('#cancel-switch').click();
                            if (!document.querySelector('#switch-confirmation').hidden) throw new Error('Cancel failed');
                            form.requestSubmit();
                            document.querySelector('#confirm-switch').click();
                        } catch (error) {
                            location.href = 'tauri://localhost/?smoke=result&passed=false&reason=' + encodeURIComponent(error.message);
                        }
                    })();
                "#).unwrap();
            } else if webview.label().starts_with("workspace-") && payload.url().host_str() == Some("kanbangit.de") {
                let current_stage = page_stage.fetch_add(1, Ordering::SeqCst);
                if current_stage == 0 {
                    webview.eval(r#"
                        (async () => {
                            for (let attempt = 0; attempt < 100; attempt++) {
                                if (document.querySelector('#app')?.innerText.trim().length > 100) break;
                                await new Promise(resolve => setTimeout(resolve, 100));
                            }
                            const rendered = document.querySelector('#app')?.innerText.trim().length > 100;
                            let denied = true;
                            for (const cmd of ['plugin:path|resolve_directory', 'plugin:window|get_all_windows']) {
                                try { await window.__TAURI_INTERNALS__.invoke(cmd); denied = false; }
                                catch (error) { denied = denied && String(error).includes('not allowed'); }
                            }
                            const input = document.createElement('input');
                            input.id = 'kan52-unsaved'; input.value = 'unsaved input'; document.body.append(input);
                            document.cookie = 'kan52_fixture=isolated; Path=/; Secure; SameSite=Lax';
                            localStorage.setItem('kan52_fixture', 'isolated');
                            const ok = rendered && denied && typeof window.__TAURI__ === 'undefined' && location.pathname === '/login' && history.length === 1;
                            location.href = '/__native_smoke_result?stage=loaded&passed=' + ok;
                        })();
                    "#).unwrap();
                } else {
                    webview.eval(r#"
                        const isolated = !document.cookie.includes('kan52_fixture') && localStorage.getItem('kan52_fixture') === null;
                        location.href = '/__native_smoke_result?stage=isolated&passed=' + isolated;
                    "#).unwrap();
                }
            }
        })
        .on_navigation(move |webview, url| {

            eprintln!("Smoke navigation: {} {}", webview.label(), url);
            if url.path() != "/__native_smoke_result" && !url.query_pairs().any(|(key, value)| key == "smoke" && value == "result") {
                return true;
            }
            let success = url.query_pairs().any(|(key, value)| key == "passed" && value == "true");
            let loaded = url.query_pairs().any(|(key, value)| key == "stage" && value == "loaded");
            println!("macOS WebView smoke test: {}", url.query().unwrap_or_default());
            if success && loaded {
                let app = webview.app_handle().clone();
                let label = webview.label().to_string();
                std::thread::spawn(move || {
                    let window = app.get_webview_window(&label).unwrap();
                    // A blocked cross-origin navigation must leave the existing input intact.
                    window.navigate(tauri::Url::parse("https://kanbangit.de:9/unreachable").unwrap()).unwrap();
                    std::thread::sleep(std::time::Duration::from_secs(1));
                    window.eval(r#"
                        if (document.querySelector('#kan52-unsaved')?.value !== 'unsaved input') {
                            location.href = '/__native_smoke_result?passed=false&stage=preservation';
                        }
                    "#).unwrap();
                    let launcher = app.get_webview_window("launcher").unwrap();
                    launcher.show().unwrap();
                    launcher.eval(r#"
                        document.querySelector('#server-url').value = 'https://kanbangit.de/login/';
                        document.querySelector('#server-form').requestSubmit();
                        document.querySelector('#confirm-switch').click();
                    "#).unwrap();
                });
            } else {
                result_passed.store(success, Ordering::SeqCst);
                if success {
                    let app = webview.app_handle().clone();
                    let label = webview.label().to_string();
                    let handle = app.clone();
                    app.run_on_main_thread(move || {
                        assert!(!handle.get_webview_window("launcher").unwrap().is_visible().unwrap());
                        handle.get_webview_window(&label).unwrap().close().unwrap();
                    }).unwrap();
                } else {
                    webview.app_handle().exit(1);
                }
            }
            false
        })
        .build();
    let mut context = kanbangit_native::context();
    context.config_mut().identifier = format!("de.kanbangit.smoke.kan52.{}", std::process::id());
    let app = kanbangit_native::builder()
        .plugin(plugin)
        .build(context)
        .expect("The macOS application must start");
    let visibility_handle = app.handle().clone();
    let visibility_stage = stage.clone();
    let visibility_check = std::thread::spawn(move || {
        if needs_setup {
            return;
        }
        for _ in 0..30 {
            if visibility_stage.load(Ordering::SeqCst) > 0 {
                break;
            }
            if let Some(launcher) = visibility_handle.get_webview_window("launcher") {
                assert!(
                    !launcher.is_visible().unwrap(),
                    "Launcher flashed while the workspace was loading"
                );
            }
            std::thread::sleep(std::time::Duration::from_millis(100));
        }
    });
    let config_dir = app.path().app_config_dir().unwrap();
    let handle = app.handle().clone();
    std::thread::spawn(move || {
        std::thread::sleep(std::time::Duration::from_secs(60));
        eprintln!("macOS smoke test timed out");
        handle.exit(1);
    });
    let closed = Arc::new(AtomicBool::new(false));
    let closed_result = closed.clone();
    let exit_code = app.run_return(move |app, event| {
        if let tauri::RunEvent::ExitRequested { code: Some(0), .. } = event {
            closed_result.store(true, Ordering::SeqCst);
            assert!(
                needs_setup
                    || !app
                        .get_webview_window("launcher")
                        .unwrap()
                        .is_visible()
                        .unwrap(),
                "Closing the workspace must not reopen settings"
            );
        }
    });
    visibility_check.join().unwrap();
    assert_eq!(exit_code, 0);
    assert!(
        closed.load(Ordering::SeqCst),
        "The close button must quit the application"
    );
    let _ = std::fs::remove_dir_all(config_dir);
    assert!(
        passed.load(Ordering::SeqCst),
        "The native smoke test must complete successfully"
    );
}

#[cfg(not(target_os = "macos"))]
fn main() {
    panic!("Run this smoke test on macOS with an active graphical session");
}