SmartParkApplication.java

package com.parking;

import com.parking.model.*;
import com.parking.service.ParkingLotService;
import java.util.Map;
import java.util.Scanner;

/**
 * SmartPark — Intelligent Parking Management System
 * CLI demo runner for the Java backend.
 */
public class SmartParkApplication {

    private static final ParkingLotService lotService = new ParkingLotService();

    public static void main(String[] args) {
        System.out.println("╔══════════════════════════════════════════╗");
        System.out.println("║    SMARTPARK — Intelligent Parking       ║");
        System.out.println("║    Management System  v1.0               ║");
        System.out.println("╚══════════════════════════════════════════╝");
        System.out.println();

        // Demo: Simulate entries and exits
        runDemo();
    }

    private static void runDemo() {
        Scanner scanner = new Scanner(System.in);
        boolean running = true;

        while (running) {
            printMenu();
            System.out.print("Select option: ");
            String choice = scanner.nextLine().trim();

            switch (choice) {
                case "1":
                    vehicleEntry(scanner);
                    break;
                case "2":
                    vehicleExit(scanner);
                    break;
                case "3":
                    viewAvailableSpots();
                    break;
                case "4":
                    viewAnalytics();
                    break;
                case "5":
                    viewTicketHistory();
                    break;
                case "6":
                    runAutomaticDemo();
                    break;
                case "0":
                    running = false;
                    System.out.println("\n👋 Thank you for using SmartPark!");
                    break;
                default:
                    System.out.println("❌ Invalid option. Try again.");
            }
        }
        scanner.close();
    }

    private static void printMenu() {
        System.out.println("\n┌─────────────────────────────────────┐");
        System.out.println("│  1. Vehicle Entry                   │");
        System.out.println("│  2. Vehicle Exit                    │");
        System.out.println("│  3. View Available Spots            │");
        System.out.println("│  4. Analytics Dashboard             │");
        System.out.println("│  5. Ticket History                  │");
        System.out.println("│  6. Run Automatic Demo              │");
        System.out.println("│  0. Exit                            │");
        System.out.println("└─────────────────────────────────────┘");
    }

    private static void vehicleEntry(Scanner scanner) {
        System.out.print("License Plate: ");
        String plate = scanner.nextLine().trim().toUpperCase();
        System.out.print("Owner Name: ");
        String owner = scanner.nextLine().trim();
        System.out.println("Vehicle Type: 1=CAR  2=MOTORCYCLE  3=TRUCK  4=EV  5=HANDICAPPED");
        System.out.print("Choice: ");
        int typeChoice = Integer.parseInt(scanner.nextLine().trim());
        Vehicle.VehicleType[] types = Vehicle.VehicleType.values();
        Vehicle.VehicleType type = types[Math.min(typeChoice - 1, types.length - 1)];

        try {
            ParkingTicket ticket = lotService.processEntry(plate, owner, type);
            System.out.println("\n✅ Entry Successful!");
            System.out.println("   Ticket ID  : " + ticket.getTicketId());
            System.out.println("   Spot       : " + ticket.getSpotId());
            System.out.println("   Entry Time : " + ticket.getIssuedAt());
        } catch (Exception e) {
            System.out.println("❌ " + e.getMessage());
        }
    }

    private static void vehicleExit(Scanner scanner) {
        System.out.print("License Plate: ");
        String plate = scanner.nextLine().trim().toUpperCase();

        try {
            ParkingTicket ticket = lotService.processExit(plate);
            System.out.println("\n✅ Exit Processed!");
            System.out.println("   Ticket ID  : " + ticket.getTicketId());
            System.out.println("   Duration   : " + ticket.getDurationMinutes() + " minutes");
            System.out.println("   Amount Due : ₹" + String.format("%.2f", ticket.getAmount()));
            System.out.println("   Status     : " + (ticket.isPaid() ? "PAID ✓" : "PENDING"));
        } catch (Exception e) {
            System.out.println("❌ " + e.getMessage());
        }
    }

    private static void viewAvailableSpots() {
        System.out.println("\n📍 Available Spots:");
        System.out.printf("%-8s %-6s %-8s %-15s%n", "Spot ID", "Zone", "Level", "Type");
        System.out.println("─".repeat(45));
        lotService.getAvailableSpots().stream().limit(20).forEach(spot ->
            System.out.printf("%-8s %-6s %-8d %-15s%n",
                spot.getId(), spot.getZone(), spot.getLevel(), spot.getType())
        );
        System.out.println("\nTotal Available: " + lotService.getAvailableSpots().size());
    }

    private static void viewAnalytics() {
        System.out.println("\n📊 Analytics Dashboard");
        System.out.println("─".repeat(40));
        Map<String, Object> analytics = lotService.getAnalytics();
        analytics.forEach((k, v) -> System.out.printf("  %-20s : %s%n", k, v));
    }

    private static void viewTicketHistory() {
        System.out.println("\n🎫 Ticket History (last 10):");
        lotService.getTicketHistory().stream()
                .skip(Math.max(0, lotService.getTicketHistory().size() - 10))
                .forEach(System.out::println);
    }

    private static void runAutomaticDemo() {
        System.out.println("\n🚀 Running automatic demo...\n");

        String[][] vehicles = {
            {"MH12AB1234", "Rahul Sharma", "1"},
            {"DL05CD5678", "Priya Singh", "4"},
            {"KA03EF9012", "Amit Kumar", "5"},
            {"TN22GH3456", "Meera Nair", "2"},
            {"GJ01IJ7890", "Vikram Patel", "3"},
        };

        // Entries
        for (String[] v : vehicles) {
            try {
                Vehicle.VehicleType type = Vehicle.VehicleType.values()[Integer.parseInt(v[2]) - 1];
                ParkingTicket ticket = lotService.processEntry(v[0], v[1], type);
                System.out.printf("   ✓ %s → Spot %s%n", v[0], ticket.getSpotId());
            } catch (Exception e) {
                System.out.println("   ❌ " + e.getMessage());
            }
        }

        System.out.println("\n--- Processing exits ---");

        // Exit first 3
        for (int i = 0; i < 3; i++) {
            try {
                ParkingTicket t = lotService.processExit(vehicles[i][0]);
                System.out.printf("   ✓ %s exited | Charge: ₹%.2f%n", vehicles[i][0], t.getAmount());
            } catch (Exception e) {
                System.out.println("   ❌ " + e.getMessage());
            }
        }

        viewAnalytics();
    }
}