const mongoose = require('mongoose');

const contextChunkSchema = new mongoose.Schema(
  {
    eventId: {
      type: mongoose.Schema.Types.ObjectId,
      ref: 'Event',
      required: true,
      index: true,
    },
    sourceId: {
      type: mongoose.Schema.Types.ObjectId,
      ref: 'KnowledgeSource',
      required: true,
      index: true,
    },
    rawText: { type: String, required: true },
    embedding: { type: [Number], required: true },
    embeddingModel: { type: String, trim: true },
    isActive: { type: Boolean, default: false, index: true },
  },
  { timestamps: true },
);

contextChunkSchema.index({ eventId: 1, isActive: 1 });

module.exports = mongoose.model('ContextChunk', contextChunkSchema);