import Foundation

/// 订单信息模型
struct OrderInfo: Codable, Identifiable {
    let id: String
    let userId: String
    let totalAmount: Amount
    let status: String
    let items: [OrderItem]
    let paymentInfo: PaymentInfo?
    let createdAt: String
    let updatedAt: String
    let expiredAt: String
    
    enum CodingKeys: String, CodingKey {
        case id
        case userId = "user_id"
        case totalAmount = "total_amount"
        case status
        case items
        case paymentInfo = "payment_info"
        case createdAt = "created_at"
        case updatedAt = "updated_at"
        case expiredAt = "expired_at"
    }
}

/// 支付信息模型
struct PaymentInfo: Codable {
    let id: String
    let paymentMethod: String
    let paymentStatus: String
    let paymentAmount: Amount
    let transactionId: String?
    let thirdPartyTransactionId: String?
    let paidAt: String?
    let createdAt: String
    let updatedAt: String
    
    enum CodingKeys: String, CodingKey {
        case id
        case paymentMethod = "payment_method"
        case paymentStatus = "payment_status"
        case paymentAmount = "payment_amount"
        case transactionId = "transaction_id"
        case thirdPartyTransactionId = "third_party_transaction_id"
        case paidAt = "paid_at"
        case createdAt = "created_at"
        case updatedAt = "updated_at"
    }
}

/// 金额模型
struct Amount: Codable {
    let amount: String
    let currency: String
}

/// 订单项模型
struct OrderItem: Codable, Identifiable {
    let id: String
    let productId: Int
    let productType: String
    let productCode: String
    let productName: String
    let unitPrice: Amount
    let discountAmount: Amount
    let quantity: Int
    let totalPrice: Amount
    
    enum CodingKeys: String, CodingKey {
        case id
        case productId = "product_id"
        case productType = "product_type"
        case productCode = "product_code"
        case productName = "product_name"
        case unitPrice = "unit_price"
        case discountAmount = "discount_amount"
        case quantity
        case totalPrice = "total_price"
    }
}

/// 订单状态
enum OrderStatus: Int, Codable {
    case pending = 0      // 待支付
    case paid = 1         // 已支付
    case completed = 2    // 已完成
    case cancelled = 3    // 已取消
    case refunded = 4     // 已退款
    
    var description: String {
        switch self {
        case .pending: return "待支付"
        case .paid: return "已支付"
        case .completed: return "已完成"
        case .cancelled: return "已取消"
        case .refunded: return "已退款"
        }
    }
}