const { DEFAULT_TRIAL_DAYS } = require('../helpers/constants');

const mongoose = require('mongoose'),
  Schema = mongoose.Schema;

const schema = new Schema({
  userId: { type: Schema.Types.ObjectId, ref: 'User' },

  // Global measureUnit, whether isUS measurement unit
  measureUnit: { type: Boolean, default: false },
  jobsByPilot: { type: Boolean, default: false },

  matType: { type: Number, default: 0 },  // 0: Liquid, 1: Dry

  // Spray Path options for spray lines drawing or making Application reports
  sprayPath: {
    overlap: { type: Number, min: 10, max: 200, default: 120 },  // Percentage: 10 - 200 
    dataOp: { type: Number, default: 0 }
  },

  upload: {
    updateOp: String
  },

  colors: { type: Schema.Types.Mixed },
  obstacles: { type: Schema.Types.Mixed },
  mapOps: { type: Schema.Types.Mixed },
  track: { type: Schema.Types.Mixed },

  noPopup: { type: Boolean, default: false },

  // Nunber of trial days for Agmission's applicators
  trialDays: { type: [Number] },

  // Subscription promotion rules - controls discounts and coupons by type/price
  subscriptionPromos: [{
    // Matching criteria
    type: { type: String, enum: ['package', 'addon'] },  // Subscription type to match (null = any)
    priceKey: { type: String },                          // Price lookup key e.g., 'addon_1', 'ess_1' (null = any)

    // Promo status
    enabled: { type: Boolean, default: false },
    validUntil: { type: Date },                          // Last date new/changing subscriptions can apply this promo (eligibility)
    discountEndsAt: { type: Date },                      // When the applied discount expires for existing subscribers (schedule phase end_date). Falls back to validUntil if not set.
    couponId: { type: String },                          // Stripe coupon ID to apply

    // Precedence and chaining
    priority: { type: Number, default: 0 },              // Higher number = higher priority in matching
    chainable: { type: Boolean, default: false },        // Can chain to next promo when expired

    // Coupon duration support
    durationInMonths: { type: Number },                  // null/undefined = forever, number = repeating X months

    // Customer eligibility
    eligibility: { 
      type: String, 
      enum: Object.values(require('../helpers/constants').PromoEligibility),
      default: require('../helpers/constants').PromoEligibility.ALL 
    },

    // Display (fallback)
    name: { type: String },                              // Fallback display name

    // i18n support (SCREAMING_SNAKE keys)
    nameKey: { type: String },                           // Translation key e.g., 'PROMO_ADDON_FREE'
    descriptionKey: { type: String },                    // Translation key e.g., 'PROMO_ADDON_FREE_DESC'

    // Discount info (for UI display)
    discountType: { type: String, enum: ['free', 'percent', 'fixed'] },  // Type of discount
    discountValue: { type: Number },                     // 100 for free, 50 for 50%, 500 for $5 off (cents)

    // Usage tracking
    usageCount: { type: Number, default: 0 },            // Number of subscriptions using this promo

    createdAt: { type: Date, default: Date.now }
  }]
});

schema.post('save', function (doc) {
  if (!this.trialDays || this.trialDays.length)
    this.trialDays = DEFAULT_TRIAL_DAYS;  
});

module.exports = mongoose.model('Setting', schema);