const { DataTypes } = require('sequelize');
const bcrypt = require('bcryptjs');
const { sequelize } = require('../config/database');

const User = sequelize.define('User', {
  id: {
    type: DataTypes.UUID,
    defaultValue: DataTypes.UUIDV4,
    primaryKey: true
  },
  firstName: {
    type: DataTypes.STRING,
    allowNull: false,
    validate: {
      notEmpty: true,
      len: [2, 50]
    }
  },
  lastName: {
    type: DataTypes.STRING,
    allowNull: false,
    validate: {
      notEmpty: true,
      len: [2, 50]
    }
  },
  email: {
    type: DataTypes.STRING,
    allowNull: false,
    unique: true,
    validate: {
      isEmail: true
    }
  },
  password: {
    type: DataTypes.STRING,
    allowNull: false,
    validate: {
      len: [6, 100]
    }
  },
  role: {
    type: DataTypes.ENUM('super_admin', 'trainer', 'trainee'),
    allowNull: false,
    defaultValue: 'trainee'
  },
  phone: {
    type: DataTypes.STRING,
    allowNull: true
  },
  avatar: {
    type: DataTypes.STRING,
    allowNull: true
  },
  isActive: {
    type: DataTypes.BOOLEAN,
    defaultValue: true
  },
  lastLogin: {
    type: DataTypes.DATE,
    allowNull: true
  }
}, {
  tableName: 'users',
  hooks: {
    beforeCreate: async (user) => {
      if (user.password) {
        user.password = await bcrypt.hash(user.password, 12);
      }
    },
    beforeUpdate: async (user) => {
      if (user.changed('password')) {
        user.password = await bcrypt.hash(user.password, 12);
      }
    }
  }
});

// Instance method to compare password
User.prototype.comparePassword = async function(candidatePassword) {
  return await bcrypt.compare(candidatePassword, this.password);
};

// Instance method to get full name
User.prototype.getFullName = function() {
  return `${this.firstName} ${this.lastName}`;
};

module.exports = User;