const { DataTypes } = require('sequelize');
const { v4: uuidv4 } = require('uuid');

module.exports = (sequelize) => {
  const Link = sequelize.define('Link', {
    id: {
      type: DataTypes.UUID,
      defaultValue: DataTypes.UUIDV4,
      primaryKey: true
    },
    url: {
      type: DataTypes.TEXT,
      allowNull: false,
      unique: true,
      validate: {
        isUrl: true
      }
    },
    title: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    description: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    image: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    created_at: {
      type: DataTypes.DATE,
      defaultValue: DataTypes.NOW,
      allowNull: false
    },
    created_by: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    modified_at: {
      type: DataTypes.DATE,
      allowNull: true
    },
    modified_by: {
      type: DataTypes.TEXT,
      allowNull: true
    },
    archived: {
      type: DataTypes.BOOLEAN,
      defaultValue: false,
      allowNull: false
    }
  }, {
    tableName: 'links',
    timestamps: false, // We're using created_at and modified_at manually
    underscored: true
  });

  // Hook to set modified_at before update
  Link.beforeUpdate((link) => {
    link.modified_at = new Date();
  });

  return Link;
};