const mongoose = require('mongoose');

const orderItemSchema = new mongoose.Schema({
  product: { type: mongoose.Schema.Types.ObjectId, ref: 'Product', required: true },
  name: { type: String, required: true },
  image: { type: String, required: true },
  price: { type: Number, required: true },
  quantity: { type: Number, required: true },
  variantColor: { type: String, default: '' },
  variantFinish: { type: String, default: '' },
  sku: { type: String, default: '' }
});

const statusHistorySchema = new mongoose.Schema({
  status: { type: String, required: true },
  note: { type: String, default: '' },
  updatedAt: { type: Date, default: Date.now }
});

const orderSchema = new mongoose.Schema({
  orderNumber: { type: String, required: true, unique: true },
  user: { type: mongoose.Schema.Types.ObjectId, ref: 'User', required: true },
  orderItems: [orderItemSchema],
  
  // Indian Shipping Address Schema
  shippingAddress: {
    fullName: { type: String, default: '' },
    mobileNumber: { type: String, required: true },
    addressLine1: { type: String, required: true },
    addressLine2: { type: String, default: '' },
    landmark: { type: String, default: '' },
    city: { type: String, required: true },
    district: { type: String, default: '' },
    state: { type: String, required: true },
    postalCode: { type: String, required: true }, // 6-digit PIN code
    country: { type: String, required: true, default: 'India' }
  },

  // Payment Configuration
  paymentMethod: {
    type: String,
    required: true,
    enum: ['Razorpay', 'UPI', 'Stripe', 'Credit/Debit Card', 'Net Banking', 'Cash on Delivery']
  },
  paymentResult: {
    id: { type: String },
    status: { type: String },
    update_time: { type: String },
    email_address: { type: String }
  },

  // Pricing & Indian GST breakdown
  itemsPrice: { type: Number, required: true, default: 0 },
  gstPercentage: { type: Number, default: 18 },
  cgst: { type: Number, default: 0 },
  sgst: { type: Number, default: 0 },
  igst: { type: Number, default: 0 },
  taxPrice: { type: Number, required: true, default: 0 },
  shippingPrice: { type: Number, required: true, default: 0 },
  discountAmount: { type: Number, default: 0 },
  totalAmount: { type: Number, required: true, default: 0 },

  // Order Status Lifecycle
  orderStatus: {
    type: String,
    enum: ['Pending', 'Payment Pending', 'Payment Confirmed', 'Processing', 'Packed', 'Shipped', 'Out for Delivery', 'Delivered', 'Cancelled', 'Returned', 'Refunded'],
    default: 'Pending'
  },
  statusHistory: [statusHistorySchema],

  // Indian Courier Logistics
  courierProvider: { type: String, default: 'Delhivery' }, // Delhivery, BlueDart, Bluedart, FedEx, Xpressbees
  awbNumber: { type: String, default: '' },
  trackingNumber: { type: String, default: '' },
  trackingUrl: { type: String, default: '' },
  estimatedDeliveryDate: { type: Date },

  isPaid: { type: Boolean, default: false },
  paidAt: { type: Date },
  isDelivered: { type: Boolean, default: false },
  deliveredAt: { type: Date },
  notes: { type: String, default: '' }
}, { timestamps: true });

module.exports = mongoose.model('Order', orderSchema);