const { DataTypes } = require("sequelize");
const sequelize = require("../../config/db.config");

const Unit = sequelize.define("Unit", {
  unit_id: { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true, hidden: true, order: 0 },
  uuid: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, allowNull: false, unique: true, hidden: true, order: 0 },
  course_id: { type: DataTypes.BIGINT, allowNull: false, hidden: true, order: 0 },

  title: { type: DataTypes.STRING(255), allowNull: false, label: "Title", hidden: false, order: 1 },
  description: { type: DataTypes.TEXT, allowNull: true, label: "Description", hidden: false, order: 2 },
  order_index: { type: DataTypes.INTEGER, allowNull: false, defaultValue: 0, label: "Order", hidden: false, order: 3 },

  duration_seconds: { type: DataTypes.INTEGER, allowNull: true, defaultValue: 0 },

  createdBy: { type: DataTypes.BIGINT, allowNull: true, label: "Created By" },
  updatedBy: { type: DataTypes.BIGINT, allowNull: true, label: "Updated By" },
  deletedBy: { type: DataTypes.BIGINT, allowNull: true, label: "Deleted By" },
}, {
  tableName: "units",
  timestamps: true,
  paranoid: true,
  indexes: [
    { fields: ["uuid"] },
    { fields: ["course_id"] },
    { fields: ["order_index"] },
    { fields: ["deletedAt"] },
  ],
});

module.exports = Unit;