const { AUDIT_ACTIONS } = require('../config/constants');

module.exports = (sequelize, DataTypes) => {
    const AuditLog = sequelize.define('AuditLog', {
        id: {
            type: DataTypes.UUID,
            defaultValue: DataTypes.UUIDV4,
            primaryKey: true
        },
        userId: {
            type: DataTypes.UUID,
            allowNull: true,
            references: {
                model: 'users',
                key: 'id'
            }
        },
        action: {
            type: DataTypes.ENUM(Object.values(AUDIT_ACTIONS)),
            allowNull: false
        },
        entityType: {
            type: DataTypes.STRING,
            allowNull: false
        },
        entityId: {
            type: DataTypes.UUID,
            allowNull: false
        },
        oldData: {
            type: DataTypes.JSON,
            allowNull: true
        },
        newData: {
            type: DataTypes.JSON,
            allowNull: true
        },
        ipAddress: {
            type: DataTypes.STRING,
            allowNull: true
        },
        userAgent: {
            type: DataTypes.STRING,
            allowNull: true
        }
    }, {
        tableName: 'audit_logs',
        timestamps: true,
        indexes: [
            { fields: ['userId'] },
            { fields: ['action'] },
            { fields: ['entityType'] },
            { fields: ['entityId'] }
        ]
    });

    AuditLog.associate = (models) => {
        AuditLog.belongsTo(models.User, {
            foreignKey: 'userId',
            as: 'user'
        });
    };

    return AuditLog;
};