/**
 * 國際化配置
 *
 * @author Lion Li
 */
@Configuration
public class I18nConfig {

	@Bean
	public LocaleResolver localeResolver() {
		return new I18nLocaleResolver();
	}

	/**
	 * 獲取請求頭國際化信息
	 */
	static class I18nLocaleResolver implements LocaleResolver {

		@NotNull
		@Override
		public Locale resolveLocale(HttpServletRequest httpServletRequest) {
			String language = httpServletRequest.getHeader("content-language");
			Locale locale = Locale.getDefault();
			if (StrUtil.isNotBlank(language)) {
				String[] split = language.split("_");
				locale = new Locale(split[0], split[1]);
			}
			return locale;
		}

		@Override
		public void setLocale(@NotNull HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {

		}
	}
}

/**
 * 測試國際化
 *
 * @author Lion Li
 */
@RestController
@RequestMapping("/demo/i18n")
public class TestI18nController {

	@Autowired
	private MessageSource messageSource;

	/**
	 * 通過code獲取國際化內容
	 * code為 messages.properties 中的 key
	 *
	 * 測試使用 user.register.success
	 */
	@GetMapping()
	public String get(String code) {
		return messageSource.getMessage(code, new Object[]{}, LocaleContextHolder.getLocale());
	}
}