dist_agent_lang 1.0.19

Agentic programming with library and CLI support for Off/On-chain network integration
Documentation
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// Phase 5: Desktop & Mobile Frameworks Examples
// Demonstrates comprehensive mobile application development with:
// - Native device integrations
// - Cross-platform mobile UI
// - Mobile-specific features and sensors
// - App store integrations

// Example 1: Advanced Mobile Shopping App
@mobile
@trust("hybrid")
@chain("ethereum")
service AdvancedMobileShoppingApp {
    app: any;
    user_profile: any;
    cart: any;
    location: any;
    payment_methods: list<any>;

    fn initialize_app() -> Result<Unit, Error> {
        // Create cross-platform mobile app
        let app_config = {
            "name": "ShopSmart Mobile",
            "bundle_id": "com.shopsmart.mobile",
            "version": "2.1.0",
            "supported_orientations": ["portrait", "landscape"],
            "background_modes": ["location", "remote-notification"]
        };

        let app = mobile::create_app("ShopSmart Mobile", "com.shopsmart.mobile", "cross_platform");

        // Create main screens
        let home_screen = mobile::create_screen("Home");
        let products_screen = mobile::create_screen("Products");
        let cart_screen = mobile::create_screen("Cart");
        let profile_screen = mobile::create_screen("Profile");
        let search_screen = mobile::create_screen("Search");

        // Add screens to app
        mobile::add_screen_to_app(app, home_screen);
        mobile::add_screen_to_app(app, products_screen);
        mobile::add_screen_to_app(app, cart_screen);
        mobile::add_screen_to_app(app, profile_screen);
        mobile::add_screen_to_app(app, search_screen);

        // Set root screen
        mobile::set_root_screen(app, "home");

        // Create navigation structure
        self.setup_navigation(app);

        // Initialize user data
        self.initialize_user_data();

        // Setup device permissions
        self.request_initial_permissions();

        // Initialize location services
        self.setup_location_services();

        // Setup payment methods
        self.initialize_payment_methods();

        // Setup push notifications
        self.setup_push_notifications();

        self.app = app;

        log::info("mobile", {
            "service": "AdvancedMobileShoppingApp",
            "app_name": "ShopSmart Mobile",
            "screens_count": 5,
            "message": "Advanced mobile shopping app initialized"
        });

        return Ok(Unit);
    }

    fn setup_navigation(app: any) -> Result<Unit, Error> {
        // Create tab bar navigation
        let tab_bar = {
            "home": { "title": "Home", "icon": "home_icon", "screen_id": "home" },
            "products": { "title": "Products", "icon": "products_icon", "screen_id": "products" },
            "cart": { "title": "Cart", "icon": "cart_icon", "screen_id": "cart", "badge": "0" },
            "profile": { "title": "Profile", "icon": "profile_icon", "screen_id": "profile" }
        };

        // Setup navigation bar for each screen
        let navigation_config = {
            "home": {
                "title": "ShopSmart",
                "right_items": [
                    { "title": "Search", "icon": "search_icon", "action": "show_search" }
                ]
            },
            "products": {
                "title": "Products",
                "left_items": [
                    { "title": "Menu", "icon": "menu_icon", "action": "show_menu" }
                ],
                "right_items": [
                    { "title": "Filter", "icon": "filter_icon", "action": "show_filters" },
                    { "title": "Search", "icon": "search_icon", "action": "show_search" }
                ]
            },
            "cart": {
                "title": "Shopping Cart",
                "right_items": [
                    { "title": "Checkout", "icon": "checkout_icon", "action": "start_checkout" }
                ]
            },
            "profile": {
                "title": "My Profile",
                "right_items": [
                    { "title": "Settings", "icon": "settings_icon", "action": "show_settings" }
                ]
            }
        };

        return Ok(Unit);
    }

    fn create_home_screen() -> any {
        let screen = mobile::create_screen("Home");

        // Create hero banner
        let hero_banner = mobile::create_image_view(0, 0, 375, 200);
        mobile::add_component_to_screen(screen, hero_banner);

        // Create featured categories
        let categories_title = mobile::create_mobile_label(
            "Shop by Category",
            20, 220, 335, 30
        );
        mobile::add_component_to_screen(screen, categories_title);

        // Category grid (simplified)
        let category_buttons = [
            self.create_category_button("Electronics", 20, 260, 165, 100),
            self.create_category_button("Clothing", 195, 260, 165, 100),
            self.create_category_button("Home & Garden", 20, 370, 165, 100),
            self.create_category_button("Sports", 195, 370, 165, 100)
        ];

        for button in category_buttons  {
            mobile::add_component_to_screen(screen, button);
        }

        // Recent products section
        let recent_title = mobile::create_mobile_label(
            "Recently Viewed",
            20, 490, 335, 30
        );
        mobile::add_component_to_screen(screen, recent_title);

        // Recent products horizontal scroll
        let recent_scroll = mobile::create_mobile_scroll_view(20, 530, 335, 120);
        mobile::add_component_to_screen(screen, recent_scroll);

        return screen;
    }

    fn create_category_button(title: string, x: int, y: int, width: int, height: int) -> any {
        // Create category button with image and title
        let container = mobile::create_container("vertical", x, y, width, height);

        let image_view = mobile::create_mobile_image_view(x + 10, y + 10, width - 20, height - 50);
        let title_label = mobile::create_mobile_label(
            title,
            x + 10, y + height - 35, width - 20, 25
        );

        return container;
    }

    fn create_products_screen() -> any {
        let screen = mobile::create_screen("Products");

        // Search bar
        let search_bar = mobile::create_mobile_search_bar(20, 20, 335, 50);
        mobile::add_component_to_screen(screen, search_bar);

        // Product categories filter
        let category_scroll = mobile::create_mobile_scroll_view(0, 80, 375, 60);
        mobile::add_component_to_screen(screen, category_scroll);

        // Products grid/list
        let products_list = mobile::create_mobile_list_view(20, 150, 335, 500);
        mobile::add_component_to_screen(screen, products_list);

        return screen;
    }

    fn create_product_detail_view(product_id: string) -> any {
        // Create product detail modal/screen
        let detail_view = mobile::create_screen("Product Detail");

        // Product image
        let product_image = mobile::create_mobile_image_view(20, 20, 335, 250);
        mobile::add_component_to_screen(detail_view, product_image);

        // Product title
        let title_label = mobile::create_mobile_label(
            "Product Title",
            20, 280, 335, 30
        );
        mobile::add_component_to_screen(detail_view, title_label);

        // Price
        let price_label = mobile::create_mobile_label(
            "$99.99",
            20, 320, 100, 25
        );
        mobile::add_component_to_screen(detail_view, price_label);

        // Rating
        let rating_label = mobile::create_mobile_label(
            "⭐⭐⭐⭐☆ (4.5)",
            250, 320, 105, 25
        );
        mobile::add_component_to_screen(detail_view, rating_label);

        // Description
        let description_view = mobile::create_mobile_text_view(
            "Product description goes here...",
            20, 360, 335, 80
        );
        mobile::add_component_to_screen(detail_view, description_view);

        // Add to cart button
        let add_to_cart_button = mobile::create_mobile_button(
            "Add to Cart",
            20, 460, 335, 50
        );
        mobile::add_component_to_screen(detail_view, add_to_cart_button);

        // Buy now button
        let buy_now_button = mobile::create_mobile_button(
            "Buy Now",
            20, 520, 335, 50
        );
        mobile::add_component_to_screen(detail_view, buy_now_button);

        return detail_view;
    }

    fn create_cart_screen() -> any {
        let screen = mobile::create_screen("Cart");

        // Cart items list
        let cart_list = mobile::create_mobile_list_view(20, 20, 335, 400);
        mobile::add_component_to_screen(screen, cart_list);

        // Order summary
        let summary_container = mobile::create_container(
            "vertical",
            20, 430, 335, 150
        );

        let subtotal_label = mobile::create_mobile_label(
            "Subtotal: $99.99",
            20, 440, 315, 25
        );

        let tax_label = mobile::create_mobile_label(
            "Tax: $8.00",
            20, 470, 315, 25
        );

        let shipping_label = mobile::create_mobile_label(
            "Shipping: $5.99",
            20, 500, 315, 25
        );

        let total_label = mobile::create_mobile_label(
            "Total: $113.98",
            20, 530, 315, 30
        );

        // Checkout button
        let checkout_button = mobile::create_mobile_button(
            "Proceed to Checkout",
            20, 590, 335, 50
        );

        return screen;
    }

    fn initialize_user_data() -> Result<Unit, Error> {
        // Load or create user profile
        self.user_profile = {
            "user_id": "user_12345",
            "name": "John Doe",
            "email": "john.doe@email.com",
            "phone": "+1-555-0123",
            "addresses": [
                {
                    "type": "home",
                    "street": "123 Main St",
                    "city": "Anytown",
                    "state": "CA",
                    "zip": "12345",
                    "country": "USA"
                }
            ],
            "preferences": {
                "notifications": true,
                "location_services": true,
                "analytics": false
            },
            "loyalty_points": 1250,
            "membership_tier": "Gold"
        };

        // Initialize shopping cart
        self.cart = {
            "items": [],
            "subtotal": 0.0,
            "tax": 0.0,
            "shipping": 0.0,
            "total": 0.0,
            "item_count": 0
        };

        return Ok(Unit);
    }

    fn request_initial_permissions() -> Result<Unit, Error> {
        // Request necessary permissions
        let permissions = [
            "location",
            "camera",
            "notifications",
            "contacts",
            "storage"
        ];

        for permission in permissions  {
            let granted = mobile::request_permission(permission);
            if (!granted) {
                log::info("mobile", {
                    "action": "permission_denied",
                    "permission": permission,
                    "message": "User denied permission request"
                });
            }
        }

        return Ok(Unit);
    }

    fn setup_location_services() -> Result<Unit, Error> {
        // Initialize location services
        self.location = mobile::get_gps_location();

        log::info("mobile", {
            "action": "location_services_initialized",
            "latitude": self.location["coordinate"]["latitude"],
            "longitude": self.location["coordinate"]["longitude"],
            "accuracy": self.location["horizontal_accuracy"]
        });

        return Ok(Unit);
    }

    fn initialize_payment_methods() -> Result<Unit, Error> {
        // Initialize available payment methods
        self.payment_methods = [
            {
                "type": "credit_card",
                "last_four": "4242",
                "brand": "Visa",
                "is_default": true
            },
            {
                "type": "paypal",
                "email": "john.doe@email.com",
                "is_default": false
            },
            {
                "type": "apple_pay",
                "is_available": true,
                "is_default": false
            }
        ];

        log::info("mobile", {
            "action": "payment_methods_initialized",
            "methods_count": self.payment_methods.length
        });

        return Ok(Unit);
    }

    fn setup_push_notifications() -> Result<Unit, Error> {
        // Setup push notification handling
        let notification_settings = {
            "order_updates": true,
            "promotional_offers": true,
            "new_arrivals": false,
            "price_drops": true,
            "delivery_updates": true
        };

        log::info("mobile", {
            "action": "push_notifications_setup",
            "settings": notification_settings
        });

        return Ok(Unit);
    }

    // Product and Cart Management
    fn search_products(query: string, category: string) -> any {
        // Search products based on query and category
        let search_results = {
            "query": query,
            "category": category,
            "total_results": 25,
            "products": [
                {
                    "id": "prod_001",
                    "name": "Wireless Headphones",
                    "price": 79.99,
                    "rating": 4.5,
                    "image_url": "/products/headphones.jpg",
                    "in_stock": true,
                    "category": "Electronics"
                },
                {
                    "id": "prod_002",
                    "name": "Smart Watch",
                    "price": 299.99,
                    "rating": 4.7,
                    "image_url": "/products/smartwatch.jpg",
                    "in_stock": true,
                    "category": "Electronics"
                }
            ],
            "filters": {
                "price_range": { "min": 0, "max": 500 },
                "rating_min": 4.0,
                "in_stock_only": true
            }
        };

        return search_results;
    }

    fn add_to_cart(product_id: string, quantity: int) -> Result<Unit, Error> {
        // Add product to cart
        let product = {
            "id": product_id,
            "name": "Sample Product",
            "price": 49.99,
            "quantity": quantity,
            "image_url": "/products/sample.jpg"
        };

        self.cart["items"].push(product);
        self.update_cart_totals();

        // Update cart badge in tab bar
        self.update_cart_badge();

        // Send push notification
        mobile::send_push_notification({
            "title": "Added to Cart",
            "body": product["name"] + " added to your cart",
            "user_info": { "product_id": product_id, "action": "cart_add" }
        });

        log::info("mobile", {
            "action": "product_added_to_cart",
            "product_id": product_id,
            "quantity": quantity,
            "cart_total": self.cart["total"]
        });

        return Ok(Unit);
    }

    fn remove_from_cart(product_id: string) -> Result<Unit, Error> {
        // Remove product from cart
//         self.cart["items"] = self.cart["items"].filter(
        self.update_cart_totals();
        self.update_cart_badge();

        log::info("mobile", {
            "action": "product_removed_from_cart",
            "product_id": product_id,
            "cart_total": self.cart["total"]
        });

        return Ok(Unit);
    }

    fn update_cart_totals() -> Result<Unit, Error> {
        // Calculate cart totals
//         let subtotal = self.cart["items"].reduce(
        let tax_rate = 0.08; // 8% tax
        let tax = subtotal * tax_rate;
        let shipping = 5.99;
        if (subtotal > 50.0) {
            shipping = 0.0;
        }
        let total = subtotal + tax + shipping;

        self.cart["subtotal"] = subtotal;
        self.cart["tax"] = tax;
        self.cart["shipping"] = shipping;
        self.cart["total"] = total;
        self.cart["item_count"] = self.cart["items"].length;

        return Ok(Unit);
    }

    fn update_cart_badge() -> Result<Unit, Error> {
        // Update cart tab bar badge
        let badge_value = "";
        if (self.cart["item_count"] > 0) {
            badge_value = self.cart["item_count"].to_string();
        }

        // In real implementation, this would update the tab bar badge
        return Ok(Unit);
    }

    // Checkout and Payment
    fn start_checkout() -> Result<Unit, Error> {
        // Validate cart
        if (self.cart["items"].is_empty()) {
            mobile::show_message_dialog({
                "title": "Empty Cart",
                "message": "Your cart is empty. Add some products before checkout.",
                "dialog_type": "warning",
                "buttons": ["OK"]
            });
            return Ok(Unit);
        }

        // Navigate to checkout screen
        mobile::push_screen(self.app, "checkout");

        // Pre-fill checkout information
        self.prefill_checkout_info();

        log::info("mobile", {
            "action": "checkout_started",
            "cart_total": self.cart["total"],
            "item_count": self.cart["item_count"]
        });

        return Ok(Unit);
    }

    fn prefill_checkout_info() -> Result<Unit, Error> {
        // Pre-fill checkout form with user data
        let checkout_info = {
            "shipping_address": self.user_profile["addresses"][0],
            "billing_address": self.user_profile["addresses"][0],
//             "payment_method": self.payment_methods.find(
            "contact_info": {
                "email": self.user_profile["email"],
                "phone": self.user_profile["phone"]
            }
        };

        return Ok(Unit);
    }

    fn process_payment(payment_info: any) -> Result<any, Error> {
        // Process payment (simplified)
        log::info("mobile", {
            "action": "payment_processing_started",
            "amount": self.cart["total"],
            "payment_method": payment_info["method"]
        });

        // Simulate payment processing
        let payment_result = {
            "success": true,
            "transaction_id": "txn_" + generate_id(),
            "amount": self.cart["total"],
            "timestamp": chain::get_block_timestamp(1),
            "status": "completed"
        };

        if (payment_result["success"]) {
            // Create order
            let order = self.create_order(payment_result);

            // Clear cart
            self.cart = {
                "items": [],
                "subtotal": 0.0,
                "tax": 0.0,
                "shipping": 0.0,
                "total": 0.0,
                "item_count": 0
            };
            self.update_cart_badge();

            // Send order confirmation
            mobile::send_push_notification({
                "title": "Order Confirmed",
                "body": "Your order #" + order["order_id"] + " has been placed successfully!",
                "user_info": { "order_id": order["order_id"], "action": "order_confirmation" }
            });

            log::info("mobile", {
                "action": "payment_completed",
                "transaction_id": payment_result["transaction_id"],
                "order_id": order["order_id"],
                "amount": payment_result["amount"]
            });
        }

        return Ok(payment_result);
    }

    fn create_order(payment_result: any) -> any {
        // Create order record
        let order = {
            "order_id": "order_" + generate_id(),
            "user_id": self.user_profile["user_id"],
            "items": self.cart["items"],
            "subtotal": self.cart["subtotal"],
            "tax": self.cart["tax"],
            "shipping": self.cart["shipping"],
            "total": self.cart["total"],
            "status": "confirmed",
            "payment_transaction": payment_result["transaction_id"],
            "shipping_address": self.user_profile["addresses"][0],
            "created_at": chain::get_block_timestamp(1),
            "estimated_delivery": chain::get_block_timestamp(1) + 604800 // 7 days
        };

        return order;
    }

    // Location and Mapping Features
    fn find_nearby_stores() -> any {
        // Find stores near current location
        let nearby_stores = [
            {
                "id": "store_001",
                "name": "Downtown Store",
                "address": "123 Main St, Anytown, CA 12345",
                "distance": 0.8,
                "phone": "+1-555-0123",
                "hours": "9 AM - 9 PM",
                "coordinates": {
                    "latitude": self.location["coordinate"]["latitude"] + 0.01,
                    "longitude": self.location["coordinate"]["longitude"] - 0.01
                }
            },
            {
                "id": "store_002",
                "name": "Mall Location",
                "address": "456 Shopping Center, Anytown, CA 12345",
                "distance": 2.3,
                "phone": "+1-555-0456",
                "hours": "10 AM - 8 PM",
                "coordinates": {
                    "latitude": self.location["coordinate"]["latitude"] - 0.02,
                    "longitude": self.location["coordinate"]["longitude"] + 0.015
                }
            }
        ];

        return nearby_stores;
    }

    fn show_store_on_map(store_id: string) -> Result<Unit, Error> {
        // Show store location on map
        let stores = self.find_nearby_stores();
//         let store = stores.find(

        if (store.is_none()) {
            return Err(Error::new("Store Not Found", "Store " + store_id + " not found"));
        }

        // In real implementation, this would open a map view
        log::info("mobile", {
            "action": "store_map_opened",
            "store_id": store_id,
            "store_name": store["name"]
        });

        return Ok(Unit);
    }

    // QR Code and NFC Features
    fn scan_product_qr() -> Result<any, Error> {
        // Scan QR code for product information
        let scanned_data = mobile::scan_qr_code();

        if (scanned_data.is_empty()) {
            return Err(Error::new("Scan Failed", "Failed to scan QR code"));
        }

        // Parse QR code data (assuming it contains product ID)
        let product_id = scanned_data.split("/").pop();

        // Look up product information
        let product_info = {
            "id": product_id,
            "name": "Scanned Product",
            "price": 29.99,
            "description": "Product scanned via QR code",
            "scanned_at": chain::get_block_timestamp(1),
            "location": self.location
        };

        log::info("mobile", {
            "action": "product_qr_scanned",
            "product_id": product_id,
            "scanned_data": scanned_data
        });

        return Ok(product_info);
    }

    fn handle_nfc_payment() -> Result<any, Error> {
        // Handle NFC payment
        let nfc_data = mobile::perform_nfc_scan();

        if (nfc_data.is_empty()) {
            return Err(Error::new("NFC Scan Failed", "Failed to read NFC data"));
        }

        // Process NFC payment data
        let payment_result = {
            "success": true,
            "method": "nfc",
            "device_id": nfc_data,
            "amount": self.cart["total"],
            "timestamp": chain::get_block_timestamp(1)
        };

        log::info("mobile", {
            "action": "nfc_payment_processed",
            "device_id": nfc_data,
            "amount": payment_result["amount"]
        });

        return Ok(payment_result);
    }

    // Camera and Photo Features
    fn take_product_photo() -> Result<any, Error> {
        // Take photo of product for identification or review
        let camera = mobile::get_camera();
        let photo = mobile::capture_photo(camera);

        // Analyze photo with AI
        let analysis = ai::analyze_image(photo);

        let photo_info = {
            "photo_data": photo,
            "analysis": analysis,
            "timestamp": chain::get_block_timestamp(1),
            "location": self.location
        };

        log::info("mobile", {
            "action": "product_photo_taken",
            "objects_detected": analysis["objects"].length,
            "faces_detected": analysis["faces"].length
        });

        return Ok(photo_info);
    }

    // Push Notification Handlers
    fn handle_push_notification(notification: any) -> Result<Unit, Error> {
        // Handle incoming push notification
        if (notification["user_info"]["action"] == "order_update") {
            self.handle_order_update(notification);
        } else if (notification["user_info"]["action"] == "promotional_offer" ) {
            self.handle_promotional_offer(notification);
        } else if (notification["user_info"]["action"] == "delivery_update" ) {
            self.handle_delivery_update(notification);
        }

        return Ok(Unit);
    }

    fn handle_order_update(notification: any) -> Result<Unit, Error> {
        // Handle order status update
        log::info("mobile", {
            "action": "order_update_received",
            "order_id": notification["user_info"]["order_id"],
            "status": notification["user_info"]["status"]
        });

        return Ok(Unit);
    }

    fn handle_promotional_offer(notification: any) -> Result<Unit, Error> {
        // Handle promotional offer
        log::info("mobile", {
            "action": "promotional_offer_received",
            "offer_id": notification["user_info"]["offer_id"],
            "discount": notification["user_info"]["discount"]
        });

        return Ok(Unit);
    }

    fn handle_delivery_update(notification: any) -> Result<Unit, Error> {
        // Handle delivery status update
        log::info("mobile", {
            "action": "delivery_update_received",
            "order_id": notification["user_info"]["order_id"],
            "status": notification["user_info"]["delivery_status"]
        });

        return Ok(Unit);
    }

    // App Lifecycle Events
    fn handle_app_background() -> Result<Unit, Error> {
        // App moved to background
        log::info("mobile", {
            "action": "app_backgrounded",
            "timestamp": chain::get_block_timestamp(1)
        });

        return Ok(Unit);
    }

    fn handle_app_foreground() -> Result<Unit, Error> {
        // App moved to foreground
        log::info("mobile", {
            "action": "app_foregrounded",
            "timestamp": chain::get_block_timestamp(1)
        });

        // Refresh data if (needed
        self.refresh_app_data();

        return Ok(Unit);
    }

    fn refresh_app_data() -> Result<Unit, Error> {
        // Refresh user data, cart, etc.
        log::info("mobile", {
            "action": "app_data_refreshed",
            "timestamp": chain::get_block_timestamp(1)
        });

        return Ok(Unit);
    }

    // Rating and Review System
    fn rate_app(rating: int, review: string) -> Result<Unit, Error> {
        // Submit app rating and review
        let rating_data = {
            "user_id": self.user_profile["user_id"],
            "rating": rating,
            "review": review,
            "platform": "mobile",
            "app_version": "2.1.0",
            "timestamp": chain::get_block_timestamp(1)
        };

        let success = mobile::rate_app(rating, review);

        if (success) {
            log::info("mobile", {
                "action": "app_rated",
                "rating": rating,
                "has_review": !review.is_empty()
            });
        }

        return Ok(Unit);
    }

    // Utility Functions
    fn format_currency(amount: float) -> string {
        return "$" + amount.to_string();
    }

    fn calculate_distance(coord1: any, coord2: any) -> float {
        // Calculate distance between two coordinates (simplified)
        let lat_diff = coord1["latitude"] - coord2["latitude"];
        let lon_diff = coord1["longitude"] - coord2["longitude"];
        return (lat_diff * lat_diff + lon_diff * lon_diff).sqrt() * 111; // Rough km conversion
    }
}

// Example 2: Fitness Tracking Mobile App
// @mobile
// @trust("hybrid")
service FitnessTrackerMobileApp {
    app: any;
    user_profile: any;
    current_workout: any;
    health_data: any;
    goals: any;

    fn initialize_app() -> Result<Unit, Error> {
        // Create fitness tracking app
        let app = mobile::create_app("FitTracker", "com.fittracker.mobile", "cross_platform");

        // Create main screens
        let dashboard_screen = mobile::create_screen("Dashboard");
        let workout_screen = mobile::create_screen("Workouts");
        let progress_screen = mobile::create_screen("Progress");
        let social_screen = mobile::create_screen("Social");

        // Add screens to app
        mobile::add_screen_to_app(app, dashboard_screen);
        mobile::add_screen_to_app(app, workout_screen);
        mobile::add_screen_to_app(app, progress_screen);
        mobile::add_screen_to_app(app, social_screen);

        // Set root screen
        mobile::set_root_screen(app, "dashboard");

        // Initialize health and fitness data
        self.initialize_health_data();

        // Setup motion sensors
        self.setup_motion_sensors();

        // Setup health permissions
        self.request_health_permissions();

        // Initialize workout goals
        self.initialize_fitness_goals();

        self.app = app;

        log::info("mobile", {
            "service": "FitnessTrackerMobileApp",
            "app_name": "FitTracker",
            "message": "Fitness tracking mobile app initialized"
        });

        return Ok(Unit);
    }

    fn initialize_health_data() -> Result<Unit, Error> {
        // Initialize user's health and fitness data
        self.user_profile = {
            "user_id": "user_67890",
            "name": "Jane Smith",
            "age": 28,
            "height": 165, // cm
            "weight": 65, // kg
            "gender": "female",
            "activity_level": "moderately_active",
            "fitness_goals": {
                "daily_steps": 10000,
                "weekly_workouts": 4,
                "monthly_distance": 50 // km
            }
        };

        self.health_data = {
            "today_steps": 0,
            "today_distance": 0.0,
            "today_calories": 0,
            "today_active_minutes": 0,
            "heart_rate_zones": {
                "fat_burn": { "min": 120, "max": 150 },
                "cardio": { "min": 150, "max": 180 },
                "peak": { "min": 180, "max": 200 }
            },
            "last_updated": chain::get_block_timestamp(1)
        };

        return Ok(Unit);
    }

    fn setup_motion_sensors() -> Result<Unit, Error> {
        // Setup accelerometer and gyroscope for activity tracking
        let accelerometer = mobile::get_accelerometer_data();
        let gyroscope = mobile::get_gyroscope_data();

        log::info("mobile", {
            "action": "motion_sensors_setup",
            "accelerometer": accelerometer,
            "gyroscope": gyroscope
        });

        return Ok(Unit);
    }

    fn request_health_permissions() -> Result<Unit, Error> {
        // Request health and fitness related permissions
        let permissions = [
            "motion",
            "health_kit",
            "location",
            "notifications"
        ];

        for permission in permissions  {
            mobile::request_permission(permission);
        }

        return Ok(Unit);
    }

    fn initialize_fitness_goals() -> Result<Unit, Error> {
        // Set up user's fitness goals
        self.goals = {
            "daily": {
                "steps": 10000,
                "calories": 500,
                "active_minutes": 30,
                "distance": 5.0 // km
            },
            "weekly": {
                "workouts": 4,
                "total_distance": 25.0,
                "strength_sessions": 2,
                "cardio_sessions": 2
            },
            "monthly": {
                "weight_loss": 1.0, // kg
                "muscle_gain": 0.5, // kg
                "improvement_percentage": 10
            }
        };

        return Ok(Unit);
    }

    // Dashboard Screen
    fn create_dashboard_screen() -> any {
        let screen = mobile::create_screen("Dashboard");

        // Today's stats header
        let today_label = mobile::create_mobile_label(
            "Today's Progress",
            20, 20, 335, 30
        );
        mobile::add_component_to_screen(screen, today_label);

        // Steps progress circle
        let steps_progress = self.create_progress_circle(
            "Steps",
            self.health_data["today_steps"],
            self.goals["daily"]["steps"],
            20, 60, 150, 150
        );
        mobile::add_component_to_screen(screen, steps_progress);

        // Calories progress circle
        let calories_progress = self.create_progress_circle(
            "Calories",
            self.health_data["today_calories"],
            self.goals["daily"]["calories"],
            190, 60, 150, 150
        );
        mobile::add_component_to_screen(screen, calories_progress);

        // Active minutes
        let active_minutes_text = "Active Minutes: " + self.health_data["today_active_minutes"].to_string() + "/" + self.goals["daily"]["active_minutes"].to_string();
        let active_minutes_label = mobile::create_mobile_label(
            active_minutes_text,
            20, 230, 335, 25
        );
        mobile::add_component_to_screen(screen, active_minutes_label);

        // Distance
        let distance_text = "Distance: " + self.health_data["today_distance"].to_string() + "/" + self.goals["daily"]["distance"].to_string() + " km";
        let distance_label = mobile::create_mobile_label(
            distance_text,
            20, 265, 335, 25
        );
        mobile::add_component_to_screen(screen, distance_label);

        // Quick actions
        let start_workout_button = mobile::create_mobile_button(
            "Start Workout",
            20, 310, 335, 50
        );
        mobile::add_component_to_screen(screen, start_workout_button);

        let log_water_button = mobile::create_mobile_button(
            "Log Water",
            20, 370, 335, 50
        );
        mobile::add_component_to_screen(screen, log_water_button);

        return screen;
    }

    fn create_progress_circle(title: string, current: int, target: int, x: int, y: int, width: int, height: int) -> any {
        // Create circular progress indicator (simplified as container)
        let container = mobile::create_container("vertical", x, y, width, height);

        let title_label = mobile::create_mobile_label(
            title,
            x + 10, y + 10, width - 20, 25
        );

        let progress_text_str = current.to_string() + "/" + target.to_string();
        let progress_text = mobile::create_mobile_label(
            progress_text_str,
            x + 10, y + height - 35, width - 20, 25
        );

        let percentage = 0;
        if (target > 0) {
            percentage = (current * 100) / target;
        }
        let percentage_text = percentage.to_string() + "%";
        let progress_label = mobile::create_mobile_label(
            percentage_text,
            x + 10, y + height - 60, width - 20, 25
        );

        return container;
    }

    // Workout Features
    fn start_workout(workout_type: string) -> Result<any, Error> {
        // Start a new workout session
        let workout_id = "workout_" + generate_id();

        self.current_workout = {
            "id": workout_id,
            "type": workout_type,
            "start_time": chain::get_block_timestamp(1),
            "duration": 0,
            "exercises": [],
            "heart_rate_zones": {
                "fat_burn": 0,
                "cardio": 0,
                "peak": 0
            },
            "calories_burned": 0,
            "distance": 0.0,
            "status": "active"
        };

        // Start heart rate monitoring
        self.start_heart_rate_monitoring();

        // Send push notification
        mobile::send_push_notification({
            "title": "Workout Started",
            "body": workout_type + " workout in progress",
            "user_info": { "workout_id": workout_id, "action": "workout_started" }
        });

        log::info("mobile", {
            "action": "workout_started",
            "workout_id": workout_id,
            "workout_type": workout_type
        });

        return Ok(self.current_workout);
    }

    fn end_workout() -> Result<any, Error> {
        if (self.current_workout.is_none()) {
            return Err(Error::new("No Active Workout", "No active workout to end"));
        }

        // Calculate final statistics
        let end_time = chain::get_block_timestamp(1);
        let duration = end_time - self.current_workout["start_time"];

        self.current_workout["end_time"] = end_time;
        self.current_workout["duration"] = duration;
        self.current_workout["status"] = "completed";

        // Stop heart rate monitoring
        self.stop_heart_rate_monitoring();

        // Save workout data
        self.save_workout_data(self.current_workout);

        // Send completion notification
        mobile::send_push_notification({
            "title": "Workout Completed",
            "body": "Great job! " + to_string(duration / 60) + " minutes completed",
            "user_info": { "workout_id": self.current_workout["id"], "action": "workout_completed" }
        });

        let completed_workout = self.current_workout;
        self.current_workout = null;

        log::info("mobile", {
            "action": "workout_completed",
            "workout_id": completed_workout["id"],
            "duration": duration,
            "calories_burned": completed_workout["calories_burned"]
        });

        return Ok(completed_workout);
    }

    fn start_heart_rate_monitoring() -> Result<Unit, Error> {
        // Start monitoring heart rate during workout
        log::info("mobile", {
            "action": "heart_rate_monitoring_started",
            "workout_id": self.current_workout["id"]
        });

        return Ok(Unit);
    }

    fn stop_heart_rate_monitoring() -> Result<Unit, Error> {
        // Stop heart rate monitoring
        log::info("mobile", {
            "action": "heart_rate_monitoring_stopped",
            "workout_id": self.current_workout["id"]
        });

        return Ok(Unit);
    }

    fn save_workout_data(workout: any) -> Result<Unit, Error> {
        // Save workout data to persistent storage
        log::info("mobile", {
            "action": "workout_data_saved",
            "workout_id": workout["id"],
            "duration": workout["duration"],
            "calories": workout["calories_burned"]
        });

        return Ok(Unit);
    }

    // Health Data Tracking
    fn update_step_count(new_steps: int) -> Result<Unit, Error> {
        // Update daily step count
        let previous_steps = self.health_data["today_steps"];
        self.health_data["today_steps"] = new_steps;
        self.health_data["last_updated"] = chain::get_block_timestamp(1);

        // Check if (daily goal reached
        if (previous_steps < self.goals["daily"]["steps"] && new_steps >= self.goals["daily"]["steps"]) {
            mobile::send_push_notification({
                "title": "Goal Achieved! 🎉",
                "body": "Congratulations! You've reached your daily step goal.",
                "user_info": { "goal_type": "daily_steps", "action": "goal_achieved" }
            });
        }

        return Ok(Unit);
    }

    fn update_calories_burned(calories: int) -> Result<Unit, Error> {
        // Update daily calories burned
        self.health_data["today_calories"] = calories;
        self.health_data["last_updated"] = chain::get_block_timestamp(1);

        return Ok(Unit);
    }

    fn track_location_for_distance(coordinate: any) -> Result<Unit, Error> {
        // Track location changes for distance calculation
        // In real implementation, this would calculate distance between points
        self.health_data["today_distance"] = self.health_data["today_distance"] + 0.1; // Simplified

        return Ok(Unit);
    }

    // Progress Tracking
    fn get_weekly_progress() -> any {
        // Get weekly fitness progress
        let weekly_data = {
            "workouts_completed": 3,
            "total_calories": 1250,
            "total_distance": 15.5,
            "average_heart_rate": 145,
            "goals_achieved": 2,
            "personal_records": 1
        };

        return weekly_data;
    }

    fn get_monthly_progress() -> any {
        // Get monthly fitness progress
        let monthly_data = {
            "workouts_completed": 12,
            "total_calories": 5200,
            "total_distance": 68.3,
            "weight_change": -0.8,
            "goals_achieved": 8,
            "consistency_score": 85
        };

        return monthly_data;
    }

    // Social Features
    fn share_workout(workout: any, social_platform: string) -> Result<Unit, Error> {
        // Share workout on social media
        let share_text = "Just completed a " + workout["type"] + " workout! " + 
            (workout["duration"] / 60).to_string() + " minutes, " + 
            workout["calories_burned"].to_string() + " calories burned. #FitTracker #Fitness";

        log::info("mobile", {
            "action": "workout_shared",
            "workout_id": workout["id"],
            "platform": social_platform,
            "share_text": share_text
        });

        return Ok(Unit);
    }

    fn get_friends_activity() -> any {
        // Get activity from friends/followers
        let friends_activity = [
            {
                "friend_id": "friend_001",
                "name": "Mike Johnson",
                "activity": "Completed 5K run",
                "timestamp": chain::get_block_timestamp(1) - 3600,
                "likes": 3,
                "comments": 1
            },
            {
                "friend_id": "friend_002",
                "name": "Sarah Wilson",
                "activity": "Hit daily step goal",
                "timestamp": chain::get_block_timestamp(1) - 7200,
                "likes": 5,
                "comments": 2
            }
        ];

        return friends_activity;
    }

    // Push Notification Handlers
    fn handle_workout_reminder() -> Result<Unit, Error> {
        // Handle workout reminder notification
        if (!self.current_workout.is_none()) {
            return Ok(Unit); // Already in workout
        }

        mobile::send_push_notification({
            "title": "Time for a Workout!",
            "body": "Don't forget to stay active today. Let's crush those fitness goals!",
            "user_info": { "action": "workout_reminder" }
        });

        return Ok(Unit);
    }

    fn handle_goal_celebration(goal_type: string) -> Result<Unit, Error> {
        // Handle goal achievement celebration
        let celebration_messages = {
            "daily_steps": "Amazing! You've conquered your daily step goal! 🌟",
            "weekly_workouts": "Week warrior! All workouts completed! 💪",
            "monthly_distance": "Distance dominator! Monthly goal smashed! 🏃‍♀️"
        };

//         let message = celebration_messages[goal_type] 

        mobile::send_push_notification({
            "title": "Goal Achieved! 🎉",
            "body": message,
            "user_info": { "goal_type": goal_type, "action": "goal_celebration" }
        });

        return Ok(Unit);
    }

    // Utility Functions
    fn format_duration(seconds: int) -> string {
        let minutes = seconds / 60;
        let remaining_seconds = seconds % 60;
        let minutes_str = minutes.to_string();
        let seconds_str = remaining_seconds.to_string();
        if (remaining_seconds < 10) {
            seconds_str = "0" + remaining_seconds.to_string();
        }
        return minutes_str + ":" + seconds_str;
    }

    fn calculate_bmi(height_cm: int, weight_kg: int) -> float {
        let height_m = height_cm / 100.0;
        return weight_kg / (height_m * height_m);
    }

    fn get_bmi_category(bmi: float) -> string {
        if (bmi < 18.5) {
            return "Underweight";
        } else if (bmi < 25.0 ) {
            return "Normal weight";
        } else if (bmi < 30.0 ) {
            return "Overweight";
        } else {
            return "Obese";
        }
    }
}

// Main demonstration
fn main() {
    log::info("main", { "message": "Starting Phase 5: Desktop & Mobile Frameworks Examples" });

    // Initialize all mobile applications
    let shopping_app = AdvancedMobileShoppingApp::new();
    shopping_app.initialize_app();

    let fitness_app = FitnessTrackerMobileApp::new();
    fitness_app.initialize_app();

    // Demonstrate shopping app features
    shopping_app.add_to_cart("prod_001", 2);
    shopping_app.add_to_cart("prod_002", 1);
    shopping_app.start_checkout();

    // Demonstrate fitness app features
    fitness_app.start_workout("running");
    fitness_app.update_step_count(8500);
    fitness_app.end_workout();

    log::info("main", { "message": "Phase 5 Desktop & Mobile Framework examples completed successfully!" });
}