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/*
 * Copyright 2018-2025 guerlab.net and other contributors.
 *
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3 (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.gnu.org/licenses/lgpl-3.0.html
 *
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package net.guerlab.cloud.web.webmvc.autoconfigure;

import org.springframework.boot.autoconfigure.AutoConfiguration;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.annotation.Bean;
import org.springframework.web.servlet.LocaleResolver;
import org.springframework.web.servlet.i18n.LocaleChangeInterceptor;
import org.springframework.web.servlet.i18n.SessionLocaleResolver;

import net.guerlab.cloud.web.core.properties.I18nProperties;

/**
 * 国际化配置.
 *
 * @author guer
 */
@AutoConfiguration
@ConditionalOnClass({LocaleResolver.class, LocaleChangeInterceptor.class, SessionLocaleResolver.class})
@EnableConfigurationProperties(I18nProperties.class)
public class WebMvcI18nAutoConfigure {

	/**
	 * create LocaleResolver.
	 *
	 * @param properties I18nProperties
	 * @return LocaleResolver
	 */
	@Bean
	@ConditionalOnMissingBean
	public LocaleResolver localeResolver(I18nProperties properties) {
		SessionLocaleResolver resolver = new SessionLocaleResolver();
		resolver.setDefaultLocale(properties.getDefaultLocale());
		return resolver;
	}

	/**
	 * create LocaleChangeInterceptor.
	 *
	 * @return LocaleChangeInterceptor
	 */
	@Bean
	@ConditionalOnMissingBean
	public LocaleChangeInterceptor localeChangeInterceptor() {
		return new LocaleChangeInterceptor();
	}
}