import XCTest

/// Smoke tests - run on every PR. Must complete in <2 minutes.
///
/// Tests that the app launches successfully, the auth screen renders correctly,
/// and core navigation is functional. These are the minimum-viability tests
/// that must pass before any PR can merge.
///
/// Zero sleep() calls — all waits are condition-based.
final class SmokeTests: XCTestCase {
    var app: XCUIApplication!

    override func setUp() {
        super.setUp()
        continueAfterFailure = false
        app = TestLaunchConfig.launchApp()
    }

    override func tearDown() {
        app = nil
        super.tearDown()
    }

    // MARK: - App Launch

    func testAppLaunches() {
        // App should show either login screen or main tab view
        let loginScreen = LoginScreen(app: app)
        let mainScreen = MainTabScreen(app: app)

        let loginAppeared = loginScreen.emailField.waitForExistence(timeout: 15)
        let mainAppeared = mainScreen.residencesTab.waitForExistence(timeout: 5)

        XCTAssertTrue(loginAppeared || mainAppeared, "App should show login or main screen on launch")
    }

    // MARK: - Login Screen Elements

    func testLoginScreenElements() {
        let login = LoginScreen(app: app)
        guard login.emailField.waitForExistence(timeout: 15) else {
            // Already logged in, skip this test
            return
        }

        XCTAssertTrue(login.emailField.exists, "Email field should exist")
        XCTAssertTrue(login.passwordField.exists, "Password field should exist")
        XCTAssertTrue(login.loginButton.exists, "Login button should exist")
    }

    // MARK: - Login Flow

    func testLoginWithExistingCredentials() {
        let login = LoginScreen(app: app)
        guard login.emailField.waitForExistence(timeout: 15) else {
            // Already on main screen - verify tabs
            let main = MainTabScreen(app: app)
            XCTAssertTrue(main.isDisplayed, "Main tabs should be visible")
            return
        }

        // Login with the known test user
        let user = TestFixtures.TestUser.existing
        login.login(email: user.email, password: user.password)

        let main = MainTabScreen(app: app)
        XCTAssertTrue(main.residencesTab.waitForExistence(timeout: 15), "Should navigate to main screen after login")
    }

    // MARK: - Tab Navigation

    func testMainTabsExistAfterLogin() {
        let login = LoginScreen(app: app)
        if login.emailField.waitForExistence(timeout: 15) {
            let user = TestFixtures.TestUser.existing
            login.login(email: user.email, password: user.password)
        }

        let main = MainTabScreen(app: app)
        guard main.residencesTab.waitForExistence(timeout: 15) else {
            XCTFail("Main screen did not appear")
            return
        }

        // App has 4 tabs: Residences, Tasks, Contractors, Documents
        XCTAssertTrue(main.residencesTab.exists, "Residences tab should exist")
        XCTAssertTrue(main.tasksTab.exists, "Tasks tab should exist")
        XCTAssertTrue(main.contractorsTab.exists, "Contractors tab should exist")
        XCTAssertTrue(main.documentsTab.exists, "Documents tab should exist")
    }

    func testTabNavigation() {
        let login = LoginScreen(app: app)
        if login.emailField.waitForExistence(timeout: 15) {
            let user = TestFixtures.TestUser.existing
            login.login(email: user.email, password: user.password)
        }

        let main = MainTabScreen(app: app)
        guard main.residencesTab.waitForExistence(timeout: 15) else {
            XCTFail("Main screen did not appear")
            return
        }

        // Navigate through each tab and verify selection
        main.goToTasks()
        XCTAssertTrue(main.tasksTab.isSelected, "Tasks tab should be selected")

        main.goToContractors()
        XCTAssertTrue(main.contractorsTab.isSelected, "Contractors tab should be selected")

        main.goToDocuments()
        XCTAssertTrue(main.documentsTab.isSelected, "Documents tab should be selected")

        main.goToResidences()
        XCTAssertTrue(main.residencesTab.isSelected, "Residences tab should be selected")
    }
}