const mongoose = require('mongoose')
const timestamp = require('mongoose-timestamp')

const exploreInteractionSchema = new mongoose.Schema({
  viewerId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    required: true,
    index: true
  },
  targetType: {
    type: String,
    enum: ['post', 'profile', 'academy', 'shop_product', 'academy_course', 'billboard'],
    required: true
  },
  targetId: {
    type: mongoose.Schema.Types.ObjectId,
    required: true
  },
  authorId: {
    type: mongoose.Schema.Types.ObjectId,
    ref: 'User',
    default: null
  },
  contentType: {
    type: String,
    enum: ['image', 'video', 'academy', 'shop_product', 'billboard'],
    default: 'image'
  },
  action: {
    type: String,
    enum: [
      'view',
      'profile_visit',
      'share',
      'like',
      'comment',
      'offer',
      'watch_complete',
      'skip',
      'dwell'
    ],
    default: 'view'
  },
  dwellMs: {
    type: Number,
    default: null
  },
  /**
   * Snapshot of the viewer's own profile province/city at view time (only when they've
   * set one and enabled show_location) — the only geography signal available without
   * IP-geolocation or live GPS capture, neither of which exists in this codebase. This
   * is "where the viewer is from", not "where they physically were when they viewed".
   */
  viewerCountry: {
    type: Object,
    default: null
  },
  viewerProvince: {
    type: Object,
    default: null
  },
  viewerCity: {
    type: Object,
    default: null
  }
})

exploreInteractionSchema.index({ viewerId: 1, createdAt: -1 })
exploreInteractionSchema.plugin(timestamp)

module.exports = mongoose.model('ExploreInteraction', exploreInteractionSchema)