All models using classes and sequelize migrations

backend/src/models/Ticket.js

@@ -0,0 +1,25 @@
+const Sequelize = require("sequelize");
+
+class Ticket extends Sequelize.Model {
+	static init(sequelize) {
+		super.init(
+			{
+				status: { type: Sequelize.STRING, defaultValue: "pending" },
+				lastMessage: { type: Sequelize.STRING },
+			},
+			{
+				sequelize,
+			}
+		);
+
+		return this;
+	}
+
+	static associate(models) {
+		this.belongsTo(models.Contact, { foreignKey: "contactId" });
+		this.belongsTo(models.User, { foreignKey: "userId" });
+		this.hasMany(models.Message, { foreignKey: "ticketId" });
+	}
+}
+
+module.exports = Ticket;