package com.xiaopeng.account.config;

import org.springframework.boot.autoconfigure.context.MessageSourceProperties;
import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.util.StringUtils;
import org.springframework.web.servlet.LocaleResolver;

import java.nio.charset.StandardCharsets;
import java.time.Duration;


/**
 * 国际化配置
 */
@Configuration
public class MessageLocalConfig {

    /**
     * 创建MessageSourceProperties Bean
     * 配置国际化资源文件的基本属性
     */
    @Bean
    public MessageSourceProperties messageSourceProperties() {
        MessageSourceProperties properties = new MessageSourceProperties();
        // 设置资源文件基础名称
        properties.setBasename("i18n/messages");
        // 设置编码为UTF-8
        properties.setEncoding(StandardCharsets.UTF_8);
        // 不回退到系统默认语言
        properties.setFallbackToSystemLocale(false);
        // 缓存时间设置为-1（永久缓存）
        properties.setCacheDuration(Duration.ofSeconds(-1));
        // 不总是使用MessageFormat
        properties.setAlwaysUseMessageFormat(false);
        // 使用消息键作为默认消息
        properties.setUseCodeAsDefaultMessage(true);
        return properties;
    }

    @Bean
    public MessageSource messageSource(MessageSourceProperties properties) {
        ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
        if (StringUtils.hasText(properties.getBasename())) {
            messageSource.setBasenames(StringUtils
                    .commaDelimitedListToStringArray(StringUtils.trimAllWhitespace(properties.getBasename())));
        }
        if (properties.getEncoding() != null) {
            messageSource.setDefaultEncoding(properties.getEncoding().name());
        }
        messageSource.setFallbackToSystemLocale(properties.isFallbackToSystemLocale());
        Duration cacheDuration = properties.getCacheDuration();
        if (cacheDuration != null) {
            messageSource.setCacheMillis(cacheDuration.toMillis());
        }
        messageSource.setAlwaysUseMessageFormat(properties.isAlwaysUseMessageFormat());
        messageSource.setUseCodeAsDefaultMessage(properties.isUseCodeAsDefaultMessage());
        return messageSource;
    }


    @Bean//注册国际化组件
    public LocaleResolver localeResolver(){
        return new MyLocaleResolver();
    }

}