LibreChat/api/models/schema/messageSchema.js

const mongoose = require('mongoose');
const mongoMeili = require('~/models/plugins/mongoMeili');
const messageSchema = mongoose.Schema(
  {
    messageId: {
      type: String,
      unique: true,
      required: true,
      index: true,
      meiliIndex: true,
    },
    conversationId: {
      type: String,
      index: true,
      required: true,
      meiliIndex: true,
    },
    user: {
      type: String,
      index: true,
      required: true,
      default: null,
    },
    model: {
      type: String,
      default: null,
    },
    endpoint: {
      type: String,
    },
    conversationSignature: {
      type: String,
    },
    clientId: {
      type: String,
    },
    invocationId: {
      type: Number,
    },
    parentMessageId: {
      type: String,
    },
    tokenCount: {
      type: Number,
    },
    summaryTokenCount: {
      type: Number,
    },
    sender: {
      type: String,
      meiliIndex: true,
    },
    text: {
      type: String,
      meiliIndex: true,
    },
    // If the message is encrypted (and stored in 'text'),
    // then this field should hold the IV used during encryption.
    messageEncryptionIV: {
      type: String,
    },
    summary: {
      type: String,
    },
    isCreatedByUser: {
      type: Boolean,
      required: true,
      default: false,
    },
    unfinished: {
      type: Boolean,
      default: false,
    },
    error: {
      type: Boolean,
      default: false,
    },
    finish_reason: {
      type: String,
    },
    _meiliIndex: {
      type: Boolean,
      required: false,
      select: false,
      default: false,
    },
    files: { type: [{ type: mongoose.Schema.Types.Mixed }], default: undefined },
    plugin: {
      type: {
        latest: {
          type: String,
          required: false,
        },
        inputs: {
          type: [mongoose.Schema.Types.Mixed],
          required: false,
          default: undefined,
        },
        outputs: {
          type: String,
          required: false,
        },
      },
      default: undefined,
    },
    plugins: { type: [{ type: mongoose.Schema.Types.Mixed }], default: undefined },
    content: {
      type: [{ type: mongoose.Schema.Types.Mixed }],
      default: undefined,
      meiliIndex: true,
    },
    thread_id: {
      type: String,
    },
    /* frontend components */
    iconURL: {
      type: String,
    },
    attachments: { type: [{ type: mongoose.Schema.Types.Mixed }], default: undefined },
    /*
    attachments: {
      type: [
        {
          file_id: String,
          filename: String,
          filepath: String,
          expiresAt: Date,
          width: Number,
          height: Number,
          type: String,
          conversationId: String,
          messageId: {
            type: String,
            required: true,
          },
          toolCallId: String,
        },
      ],
      default: undefined,
    },
    */
    expiredAt: {
      type: Date,
    },
  },
  { timestamps: true },
);

if (process.env.MEILI_HOST && process.env.MEILI_MASTER_KEY) {
  messageSchema.plugin(mongoMeili, {
    host: process.env.MEILI_HOST,
    apiKey: process.env.MEILI_MASTER_KEY,
    indexName: 'messages',
    primaryKey: 'messageId',
  });
}
messageSchema.index({ expiredAt: 1 }, { expireAfterSeconds: 0 });
messageSchema.index({ createdAt: 1 });
messageSchema.index({ messageId: 1, user: 1 }, { unique: true });

/** @type {mongoose.Model<TMessage>} */
const Message = mongoose.models.Message || mongoose.model('Message', messageSchema);

module.exports = Message;