const { DataTypes, Model } = require('sequelize') module.exports = (sequelize) => { class Book extends Model { } Book.init({ id: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, primaryKey: true }, title: DataTypes.STRING, subtitle: DataTypes.STRING, publishedYear: DataTypes.STRING, publishedDate: DataTypes.STRING, publisher: DataTypes.STRING, description: DataTypes.TEXT, isbn: DataTypes.STRING, asin: DataTypes.STRING, language: DataTypes.STRING, explicit: DataTypes.BOOLEAN, lastCoverSearchQuery: DataTypes.STRING, lastCoverSearch: DataTypes.DATE }, { sequelize, modelName: 'Book' }) const { LibraryItem, FileMetadata, EBookFile } = sequelize.models LibraryItem.hasOne(Book) Book.belongsTo(LibraryItem) FileMetadata.hasOne(Book) Book.belongsTo(FileMetadata, { as: 'ImageFile' }) // Ref: https://sequelize.org/docs/v6/core-concepts/assocs/#defining-an-alias EBookFile.hasOne(Book) Book.belongsTo(EBookFile) return Book }