const { DataTypes } = require('sequelize');
const { sequelize } = require('../db');
const Consumable = require('./Consumable');

const ConsumableRecord = sequelize.define('ConsumableRecord', {
  recordId: {
    type: DataTypes.UUID,
    primaryKey: true,
    defaultValue: DataTypes.UUIDV4,
    allowNull: false,
    unique: true
  },
  consumableId: {
    type: DataTypes.STRING,
    allowNull: false,
    references: {
      model: Consumable,
      key: 'consumableId'
    }
  },
  type: {
    type: DataTypes.ENUM('in', 'out'),
    allowNull: false
  },
  quantity: {
    type: DataTypes.INTEGER,
    allowNull: false
  },
  previousStock: {
    type: DataTypes.INTEGER,
    allowNull: false
  },
  currentStock: {
    type: DataTypes.INTEGER,
    allowNull: false
  },
  operator: {
    type: DataTypes.STRING,
    allowNull: false
  },
  reason: {
    type: DataTypes.STRING
  },
  recipient: {
    type: DataTypes.STRING
  },
  notes: {
    type: DataTypes.TEXT
  }
}, {
  tableName: 'consumable_records',
  timestamps: true,
  indexes: [
    { fields: ['consumableId'] },
    { fields: ['type'] },
    { fields: ['createdAt'] }
  ]
});

ConsumableRecord.belongsTo(Consumable, { 
  foreignKey: 'consumableId',
  onDelete: 'CASCADE'
});
Consumable.hasMany(ConsumableRecord, { 
  foreignKey: 'consumableId',
  onDelete: 'CASCADE'
});

module.exports = ConsumableRecord;