/// API endpoint constants for the warehouse management application
///
/// This class contains all API endpoint paths used throughout the app.
/// Endpoints are organized by feature for better maintainability.
class ApiEndpoints {
  // Private constructor to prevent instantiation
  ApiEndpoints._();

  // ==================== Base Configuration ====================

  /// Base API URL - should be configured based on environment
  static const String baseUrl = 'https://api.warehouse.example.com';

  /// API version prefix
  static const String apiVersion = '/api/v1';

  // ==================== Authentication Endpoints ====================

  /// Login endpoint
  /// POST: { "EmailPhone": string, "Password": string }
  /// Response: User with access token
  static const String login = '/PortalAuth/Login';

  /// Logout endpoint
  /// POST: Empty body (requires auth token)
  static const String logout = '$apiVersion/auth/logout';

  /// Refresh token endpoint
  /// POST: { "refreshToken": string }
  /// Response: New access token
  static const String refreshToken = '$apiVersion/auth/refresh';

  /// Get current user profile
  /// GET: (requires auth token)
  static const String profile = '$apiVersion/auth/profile';

  // ==================== User Endpoints ====================

  /// Get all users (short info)
  /// GET: /PortalUser/GetAllMemberUserShortInfo (requires auth token)
  /// Response: List of users
  static const String users = '/PortalUser/GetAllMemberUserShortInfo';

  /// Get current logged-in user
  /// GET: /PortalUser/GetCurrentUser?getDep=false (requires auth token)
  /// Response: Current user details
  static const String getCurrentUser = '/PortalUser/GetCurrentUser?getDep=false';

  // ==================== Warehouse Endpoints ====================

  /// Get all warehouses
  /// POST: /portalWareHouse/search (requires auth token)
  /// Response: List of warehouses
  static const String warehouses = '/portalWareHouse/search';

  /// Get warehouse by ID
  /// GET: (requires auth token)
  /// Parameter: warehouseId
  static String warehouseById(int id) => '$apiVersion/warehouses/$id';

  /// Get warehouse statistics
  /// GET: (requires auth token)
  /// Parameter: warehouseId
  static String warehouseStats(int id) => '$apiVersion/warehouses/$id/stats';

  // ==================== Product Endpoints ====================

  /// Get products for import (all products)
  /// GET: /portalProduct/getAllProduct (requires auth token)
  /// Response: List of products
  static const String products = '/portalProduct/getAllProduct';

  /// Get products for export (products in specific warehouse)
  /// GET: /portalWareHouse/GetAllProductsInWareHouse?warehouseId={id} (requires auth token)
  /// Query param: warehouseId (int)
  /// Response: List of products in warehouse
  static String productsForExport(int warehouseId) =>
      '/portalWareHouse/GetAllProductsInWareHouse?warehouseId=$warehouseId';

  /// Get product stage in warehouse
  /// POST: /portalWareHouse/GetProductStageInWareHouse
  /// Body: { "WareHouseId": int, "ProductId": int }
  /// Response: Product details with stage information
  static const String productDetail = '/portalWareHouse/GetProductStageInWareHouse';

  /// Create product warehouse (import/export)
  /// POST: /portalWareHouse/createProductWareHouse
  /// Body: Array of product warehouse creation objects
  /// Response: Created product warehouse record
  static const String createProductWarehouse = '/portalWareHouse/createProductWareHouse';

  /// Get product by ID
  /// GET: (requires auth token)
  /// Parameter: productId
  static String productById(int id) => '$apiVersion/products/$id';

  /// Search products
  /// GET: (requires auth token)
  /// Query params: query (string), warehouseId (int, optional)
  static const String searchProducts = '$apiVersion/products/search';

  /// Get products by barcode
  /// GET: (requires auth token)
  /// Query params: barcode (string), warehouseId (int, optional)
  static const String productsByBarcode = '$apiVersion/products/by-barcode';

  // ==================== Import/Export Operations ====================

  /// Create import operation
  /// POST: { warehouseId, productId, quantity, ... }
  /// Response: Import operation details
  static const String importOperation = '$apiVersion/operations/import';

  /// Create export operation
  /// POST: { warehouseId, productId, quantity, ... }
  /// Response: Export operation details
  static const String exportOperation = '$apiVersion/operations/export';

  /// Get operation history
  /// GET: (requires auth token)
  /// Query params: warehouseId (int), type (string, optional), page (int), limit (int)
  static const String operationHistory = '$apiVersion/operations/history';

  /// Get operation by ID
  /// GET: (requires auth token)
  /// Parameter: operationId
  static String operationById(String id) => '$apiVersion/operations/$id';

  /// Cancel operation
  /// POST: (requires auth token)
  /// Parameter: operationId
  static String cancelOperation(String id) => '$apiVersion/operations/$id/cancel';

  /// Confirm operation
  /// POST: (requires auth token)
  /// Parameter: operationId
  static String confirmOperation(String id) => '$apiVersion/operations/$id/confirm';

  // ==================== Inventory Endpoints ====================

  /// Get inventory for warehouse
  /// GET: (requires auth token)
  /// Parameter: warehouseId
  /// Query params: page (int), limit (int)
  static String warehouseInventory(int warehouseId) =>
      '$apiVersion/inventory/warehouse/$warehouseId';

  /// Get product inventory across all warehouses
  /// GET: (requires auth token)
  /// Parameter: productId
  static String productInventory(int productId) =>
      '$apiVersion/inventory/product/$productId';

  /// Update inventory
  /// PUT: { warehouseId, productId, quantity, reason, ... }
  static const String updateInventory = '$apiVersion/inventory/update';

  // ==================== Report Endpoints ====================

  /// Generate warehouse report
  /// GET: (requires auth token)
  /// Query params: warehouseId (int), startDate (string), endDate (string), format (string)
  static const String warehouseReport = '$apiVersion/reports/warehouse';

  /// Generate product movement report
  /// GET: (requires auth token)
  /// Query params: productId (int, optional), startDate (string), endDate (string)
  static const String movementReport = '$apiVersion/reports/movements';

  /// Generate inventory summary
  /// GET: (requires auth token)
  /// Query params: warehouseId (int, optional)
  static const String inventorySummary = '$apiVersion/reports/inventory-summary';

  // ==================== Utility Endpoints ====================

  /// Health check endpoint
  /// GET: No authentication required
  static const String health = '$apiVersion/health';

  /// Get app configuration
  /// GET: (requires auth token)
  static const String config = '$apiVersion/config';

  // ==================== Helper Methods ====================

  /// Build full URL with base URL
  static String fullUrl(String endpoint) => baseUrl + endpoint;

  /// Build URL with query parameters
  static String withQueryParams(String endpoint, Map<String, dynamic> params) {
    if (params.isEmpty) return endpoint;

    final queryString = params.entries
        .where((e) => e.value != null)
        .map((e) => '${e.key}=${Uri.encodeComponent(e.value.toString())}')
        .join('&');

    return '$endpoint?$queryString';
  }

  /// Build paginated URL
  static String withPagination(String endpoint, int page, int limit) {
    return withQueryParams(endpoint, {
      'page': page,
      'limit': limit,
    });
  }
}