models/Analytics.js

const mongoose = require('mongoose');

const AnalyticsSchema = new mongoose.Schema({
  fileType: {
    type: String,
    required: true,
    enum: ['image', 'video', 'pdf', 'audio'], // Restrict to known types
  },
  originalSize: {
    type: Number, // in bytes
    required: true,
  },
  compressedSize: {
    type: Number, // in bytes
    required: true,
  },
  timestamp: {
    type: Date,
    default: Date.now,
    index: true // Indexing makes dashboard queries faster
  }
});

module.exports = mongoose.model('Analytics', AnalyticsSchema);