/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 *
 *    https://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
package org.grails.datastore.gorm

import groovy.transform.CompileStatic

import jakarta.persistence.Transient

import org.springframework.validation.Errors

import org.grails.datastore.mapping.validation.ValidationErrors

/**
 * A trait that adds GORM validation behavior to any class
 *
 * @author Jeff Brown
 * @author Graeme Rocher
 * @since 4.0
 */
@CompileStatic
trait GormValidateable {

    @Transient
    private transient boolean skipValidate = false
    /**
     * The validation errors object
     */
    @Transient
    Errors errors

    /**
     * Marks this instance to skip validation
     *
     * @param shouldSkip True if validation should be skipped
     */
    void skipValidation(boolean shouldSkip) {
        this.skipValidate = shouldSkip
    }

    /**
     * @return Whether this instance should skip validation
     */
    boolean shouldSkipValidation() {
        // skip validation if validation set to true or validation handled by jakarta.validation
        return this.skipValidate
    }

    /**
     * Validates an instance for the given arguments
     *
     * @param arguments The arguments to use
     * @return True if the instance is valid
     */
    boolean validate(Map arguments) {
        currentGormValidationApi().validate(this, arguments)
    }

    /**
     * Validates an instance
     *
     * @param fields The list of fields to validate
     * @return True if the instance is valid
     */
    boolean validate(List fields) {
        currentGormValidationApi().validate(this, fields)
    }

    /**
     * Validates an instance
     *
     * @return True if the instance is valid
     */
    boolean validate() {
        currentGormValidationApi().validate(this)
    }

    /**
     * Obtains the errors for an instance
     * @return The {@link Errors} instance
     */
    @Transient
    Errors getErrors() {
        if (errors == null) {
            errors = new ValidationErrors(this)
        }
        errors
    }

    /**
     * Clears any errors that exist on an instance
     */
    void clearErrors() {
        errors = new ValidationErrors(this)
    }

    /**
     * Tests whether an instance has any errors
     * @return True if errors exist
     */
    Boolean hasErrors() {
        getErrors().hasErrors()
    }

    /**
     * Used to obtain the {@link GormValidationApi} instance. This method is used internally by the framework and SHOULD NOT be called by the developer
     */
    private GormValidationApi currentGormValidationApi() {
        GormEnhancer.findValidationApi(getClass())
    }
}
