const mongoose = require('mongoose');

const promoSchema = new mongoose.Schema(
  {
    code: {
      type: String,
      required: true,
      unique: true,
      uppercase: true,
      trim: true,
    },
    type: {
      type: String,
      enum: ['percentage', 'fixed', 'shipping', 'welcome'],
      required: true,
    },
    value: {
      type: Number,
      required: true,
    },
    active: {
      type: Boolean,
      default: true,
    },
    startsAt: {
      type: Date,
    },
    expiresAt: {
      type: Date,
    },
    usageLimit: {
      type: Number,
      default: null, // null = unlimited
    },
    usedCount: {
      type: Number,
      default: 0,
    },
    perUserLimit: {
      type: Number,
      default: 1,
    },
    minOrderValue: {
      type: Number,
      default: 0,
    },
    productIds: [
      {
        type: mongoose.Schema.ObjectId,
        ref: 'Product',
      },
    ],
    categoryId: {
      type: mongoose.Schema.ObjectId,
      ref: 'Category',
      default: null,
    },
    canBeUsedWithSaleItems: {
      type: Boolean,
      default: true,
    },
    description: String,
    createdBy: {
      type: mongoose.Schema.ObjectId,
      ref: 'User',
    },
  },
  {
    timestamps: true,
  },
);

module.exports = mongoose.model('PromoCode', promoSchema);