const mongoose = require('mongoose'); const TutorialRefinityVersionSchema = new mongoose.Schema({ taskId: { type: mongoose.Schema.Types.ObjectId, ref: 'TutorialRefinityTask', required: true }, originalAuthor: { type: String, required: true }, revisedBy: { type: String }, versionNumber: { type: Number, required: true }, content: { type: String, required: true }, parentVersionId: { type: mongoose.Schema.Types.ObjectId, ref: 'TutorialRefinityVersion' }, }, { timestamps: true }); module.exports = mongoose.model('TutorialRefinityVersion', TutorialRefinityVersionSchema);