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

const Course = sequelize.define("Course", {
  course_id: { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true, hidden: true, order: 0, filterable: true },
  uuid: { type: DataTypes.UUID, defaultValue: DataTypes.UUIDV4, allowNull: false, unique: true, hidden: true, order: 0, filterable: true },
  title: { type: DataTypes.STRING(255), allowNull: false, hidden: false, order: 2, filterable: true },
  description: { type: DataTypes.TEXT, allowNull: true, hidden: true, order: 0, filterable: true },
  course_code: { type: DataTypes.STRING(50), allowNull: true, unique: true, hidden: false, order: 1, filterable: true },
  order_index: { type: DataTypes.INTEGER, allowNull: false, defaultValue: 0, hidden: false, order: 7, filterable: false },
  level: { type: DataTypes.ENUM("beginner", "intermediate", "advanced"), allowNull: true, hidden: false, order: 3, filterable: true },
  subscription: { type: DataTypes.ENUM("free", "premium"), allowNull: false, defaultValue: "free", hidden: false, order: 4, filterable: true },
  duration_seconds: { type: DataTypes.INTEGER, allowNull: true, defaultValue: 0, hidden: false, order: 8, filterable: false },
  createdBy: { type: DataTypes.BIGINT, allowNull: true },
  updatedBy: { type: DataTypes.BIGINT, allowNull: true },
  deletedBy: { type: DataTypes.BIGINT, allowNull: true },
}, {
  tableName: "courses",
  timestamps: true,
  paranoid: true,
});

// ── Junction Tables ───────────────────────────────────────────────────────────

const CourseProductCategory = sequelize.define("CourseProductCategory", {
  id: { type: DataTypes.BIGINT, primaryKey: true, autoIncrement: true },
  course_id: { type: DataTypes.BIGINT, allowNull: false },
  category_id: { type: DataTypes.BIGINT, allowNull: false },
}, { tableName: "course_product_categories", timestamps: true });

module.exports = {
  Course,
  CourseProductCategory,
};