models/Article.js

import mongoose from 'mongoose'

const articleSchema = new mongoose.Schema({
  title: { type: String, required: true },
  slug: { type: String, required: true, unique: true },
  content: { type: String, required: true },
  excerpt: { type: String, required: true },
  category: { type: String, required: true },
  featuredImage: { type: String },
  author: { type: mongoose.Schema.Types.ObjectId, ref: 'User' },
  published: { type: Boolean, default: false },
  publishedAt: { type: Date },
  createdAt: { type: Date, default: Date.now },
  updatedAt: { type: Date, default: Date.now }
})

articleSchema.set('toJSON', {
  transform: (document, returnedObject) => {
    returnedObject.id = returnedObject._id.toString()
    delete returnedObject._id
    delete returnedObject.__v
  }
})

export default mongoose.models.Article || mongoose.model('Article', articleSchema)