server/src/models/Deal.js

const mongoose = require('mongoose');

const dealSchema = new mongoose.Schema(
  {
    photographerId: {
      type: mongoose.Schema.Types.ObjectId,
      ref: 'Photographer',
      required: true,
    },
    dealType: {
      type: String,
      enum: ['last_minute', 'seasonal', 'promotional'],
      default: 'last_minute',
    },
    title: {
      type: String,
      required: true,
    },
    description: {
      type: String,
      default: '',
    },
    discountPercentage: {
      type: Number,
      required: true,
      min: 1,
      max: 100,
    },
    originalPrice: {
      type: Number,
      required: true,
    },
    discountedPrice: {
      type: Number,
      required: true,
    },
    validFrom: {
      type: Date,
      default: Date.now,
    },
    validUntil: {
      type: Date,
      required: true,
    },
    maxUses: {
      type: Number,
      default: null, // unlimited if null
    },
    usedCount: {
      type: Number,
      default: 0,
    },
    isActive: {
      type: Boolean,
      default: false,
    },
    applicablePackages: [
      {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'Package',
      },
    ],
    applicableServices: [String], // ["wedding", "portrait"]
    bookingsUsed: [
      {
        type: mongoose.Schema.Types.ObjectId,
        ref: 'Booking',
      },
    ],
  },
  { timestamps: true }
);

module.exports = mongoose.model('Deal', dealSchema);