import XCTest

/// Task management tests
/// Uses UITestHelpers for consistent login/logout behavior
/// IMPORTANT: Tasks require at least one residence to exist
///
/// Test Order (least to most complex):
/// 1. Error/incomplete data tests
/// 2. Creation tests
/// 3. Edit/update tests
/// 4. Delete/remove tests (none currently)
/// 5. Navigation/view tests
final class Suite5_TaskTests: AuthenticatedTestCase {
    override var useSeededAccount: Bool { true }

    override func setUpWithError() throws {
        try super.setUpWithError()
        navigateToTasks()
    }

    override func tearDownWithError() throws {
        try super.tearDownWithError()
    }

    // MARK: - Helper Methods

    /// Finds the Add Task button using multiple strategies
    /// The button exists in two places:
    /// 1. Toolbar (always visible when residences exist)
    /// 2. Empty state (visible when no tasks exist)
    private func findAddTaskButton() -> XCUIElement {
        sleep(2) // Wait for screen to fully render

        // Strategy 1: Try accessibility identifier
        let addButtonById = app.buttons[AccessibilityIdentifiers.Task.addButton].firstMatch
        if addButtonById.exists && addButtonById.isEnabled {
            return addButtonById
        }

        // Strategy 2: Look for toolbar add button (navigation bar plus button)
        let navBarButtons = app.navigationBars.buttons
        for i in 0..<navBarButtons.count {
            let button = navBarButtons.element(boundBy: i)
            if button.label == "plus" || button.label.contains("Add") {
                if button.isEnabled {
                    return button
                }
            }
        }

        // Strategy 3: Try finding "Add Task" button in empty state by text
        let emptyStateButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Add Task'")).firstMatch
        if emptyStateButton.exists && emptyStateButton.isEnabled {
            return emptyStateButton
        }

        // Strategy 4: Look for any enabled button with a plus icon
        let allButtons = app.buttons
        for i in 0..<min(allButtons.count, 20) { // Check first 20 buttons
            let button = allButtons.element(boundBy: i)
            if button.isEnabled && (button.label.contains("plus") || button.label.contains("Add")) {
                return button
            }
        }

        // Return the identifier one as fallback (will fail assertion if doesn't exist)
        return addButtonById
    }

    // MARK: - 1. Error/Validation Tests

    func test01_cancelTaskCreation() {
        // Given: User is on add task form
        navigateToTasks()
        sleep(3)

        let addButton = findAddTaskButton()
        XCTAssertTrue(addButton.exists && addButton.isEnabled, "Add task button should exist and be enabled")
        addButton.tap()
        sleep(3)

        // Verify form opened
        let titleField = app.textFields.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'Title'")).firstMatch
        XCTAssertTrue(titleField.waitForExistence(timeout: 5), "Task form should open")

        // When: User taps cancel
        let cancelButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Cancel'")).firstMatch
        XCTAssertTrue(cancelButton.exists, "Cancel button should exist in task form")
        cancelButton.tap()
        sleep(2)

        // Then: Should return to tasks list
        let tasksTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Tasks'")).firstMatch
        XCTAssertTrue(tasksTab.exists, "Should be back on tasks list after cancel")
    }

    // MARK: - 2. View/List Tests

    func test02_tasksTabExists() {
        // Given: User is logged in
        // When: User looks for Tasks tab
        let tasksTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Tasks'")).firstMatch

        // Then: Tasks tab should exist
        XCTAssertTrue(tasksTab.exists, "Tasks tab should exist in main tab bar")
        XCTAssertTrue(tasksTab.isSelected, "Tasks tab should be selected after navigation")
    }

    func test03_viewTasksList() {
        // Given: User is on Tasks tab
        navigateToTasks()
        sleep(3)

        // Then: Tasks screen should be visible
        // Verify we're on the right screen by checking for the navigation title
        let tasksTitle = app.staticTexts.containing(NSPredicate(format: "label CONTAINS[c] 'All Tasks' OR label CONTAINS[c] 'Tasks'")).firstMatch
        XCTAssertTrue(tasksTitle.waitForExistence(timeout: 5), "Tasks screen title should be visible")
    }

    func test04_addTaskButtonExists() {
        // Given: User is on Tasks tab with at least one residence
        navigateToTasks()
        sleep(3)

        // Then: Add task button should exist and be enabled
        let addButton = findAddTaskButton()
        XCTAssertTrue(addButton.exists, "Add task button should exist on Tasks screen")
        XCTAssertTrue(addButton.isEnabled, "Add task button should be enabled when residence exists")
    }

    func test05_navigateToAddTask() {
        // Given: User is on Tasks tab
        navigateToTasks()
        sleep(3)

        // When: User taps add task button
        let addButton = findAddTaskButton()
        XCTAssertTrue(addButton.exists, "Add task button should exist")
        XCTAssertTrue(addButton.isEnabled, "Add task button should be enabled")

        addButton.tap()
        sleep(3)

        // Then: Should show add task form with required fields
        let titleField = app.textFields.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'Title' OR placeholderValue CONTAINS[c] 'Task'")).firstMatch
        XCTAssertTrue(titleField.waitForExistence(timeout: 5), "Task title field should appear in add form")

        let saveButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Save' OR label CONTAINS[c] 'Add'")).firstMatch
        XCTAssertTrue(saveButton.exists, "Save/Add button should exist in add task form")
    }

    // MARK: - 3. Creation Tests

    func test06_createBasicTask() {
        // Given: User is on Tasks tab
        navigateToTasks()
        sleep(3)

        // When: User taps add task button
        let addButton = findAddTaskButton()
        XCTAssertTrue(addButton.exists && addButton.isEnabled, "Add task button should exist and be enabled")
        addButton.tap()
        sleep(3)

        // Verify task form loaded
        let titleField = app.textFields.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'Title'")).firstMatch
        XCTAssertTrue(titleField.waitForExistence(timeout: 5), "Task title field should appear")

        // Fill in task title with unique timestamp
        let timestamp = Int(Date().timeIntervalSince1970)
        let taskTitle = "UITest Task \(timestamp)"
        titleField.tap()
        titleField.typeText(taskTitle)

        // Scroll down to find and fill description
        app.swipeUp()
        sleep(1)

        let descField = app.textViews.containing(NSPredicate(format: "placeholderValue CONTAINS[c] 'Description'")).firstMatch
        if descField.exists {
            descField.tap()
            descField.typeText("Test task")
        }

        // Scroll to find Save button
        app.swipeUp()
        sleep(1)

        // When: User taps save/add
        let saveButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Save' OR label CONTAINS[c] 'Add'")).firstMatch
        XCTAssertTrue(saveButton.exists, "Save/Add button should exist")
        saveButton.tap()

        // Then: Should return to tasks list
        sleep(5) // Wait for API call to complete

        // Verify we're back on tasks list by checking tab exists
        let tasksTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Tasks'")).firstMatch
        XCTAssertTrue(tasksTab.exists, "Should be back on tasks list after saving")

        // Verify task appears in the list (may be in kanban columns)
        let newTask = app.staticTexts.containing(NSPredicate(format: "label CONTAINS '\(taskTitle)'")).firstMatch
        XCTAssertTrue(newTask.waitForExistence(timeout: 10), "New task '\(taskTitle)' should appear in the list")
    }

    // MARK: - 4. View Details Tests

    func test07_viewTaskDetails() {
        // Given: User is on Tasks tab and at least one task exists
        navigateToTasks()
        sleep(3)

        // Look for any task in the list
        let taskCard = app.staticTexts.containing(NSPredicate(format: "label CONTAINS 'UITest Task' OR label CONTAINS 'Test'")).firstMatch

        if !taskCard.waitForExistence(timeout: 5) {
            // No task found - skip this test
            print("No tasks found - run testCreateBasicTask first")
            return
        }

        // When: User taps on a task
        taskCard.tap()
        sleep(2)

        // Then: Should show task details screen
        let editButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Edit'")).firstMatch
        let completeButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Complete' OR label CONTAINS[c] 'Mark'")).firstMatch
        let backButton = app.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Back' OR label CONTAINS[c] 'Tasks'")).firstMatch

        let detailScreenVisible = editButton.exists || completeButton.exists || backButton.exists
        XCTAssertTrue(detailScreenVisible, "Task details screen should show with action buttons")
    }

    // MARK: - 5. Navigation Tests

    func test08_navigateToContractors() {
        // Given: User is on Tasks tab
        navigateToTasks()
        sleep(1)

        // When: User taps Contractors tab
        let contractorsTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Contractors'")).firstMatch
        XCTAssertTrue(contractorsTab.waitForExistence(timeout: 5), "Contractors tab should exist")
        contractorsTab.tap()
        sleep(1)

        // Then: Should be on Contractors tab
        XCTAssertTrue(contractorsTab.isSelected, "Contractors tab should be selected")
    }

    func test09_navigateToDocuments() {
        // Given: User is on Tasks tab
        navigateToTasks()
        sleep(1)

        // When: User taps Documents tab
        let documentsTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Doc'")).firstMatch
        XCTAssertTrue(documentsTab.waitForExistence(timeout: 5), "Documents tab should exist")
        documentsTab.tap()
        sleep(1)

        // Then: Should be on Documents tab
        XCTAssertTrue(documentsTab.isSelected, "Documents tab should be selected")
    }

    func test10_navigateBetweenTabs() {
        // Given: User is on Tasks tab
        navigateToTasks()
        sleep(1)

        // When: User navigates to Residences tab
        let residencesTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Residences'")).firstMatch
        XCTAssertTrue(residencesTab.exists, "Residences tab should exist")
        residencesTab.tap()
        sleep(1)

        // Then: Should be on Residences tab
        XCTAssertTrue(residencesTab.isSelected, "Should be on Residences tab")

        // When: User navigates back to Tasks
        let tasksTab = app.tabBars.buttons.containing(NSPredicate(format: "label CONTAINS[c] 'Tasks'")).firstMatch
        tasksTab.tap()
        sleep(2)

        // Then: Should be back on Tasks tab
        XCTAssertTrue(tasksTab.isSelected, "Should be back on Tasks tab")
    }
}