[JavaForFun] /

package de.spring.emails.services.impl;

import java.util.HashMap;
import java.util.Locale;
import java.util.Map;

import org.apache.velocity.app.VelocityEngine;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.MessageSource;
import org.springframework.stereotype.Service;
import org.springframework.ui.velocity.VelocityEngineUtils;

import de.spring.emails.services.EmailMakerService;


@Service("emailMakerService")
public class EmailMakerServiceImpl implements EmailMakerService {
        private static final String TEMPLATES_DEFAULT_EXTENSION = ".vm";
        private static final String TEMPLATES_DEFAULT_PATH = "email/";
        private static final String EMAIL_CONTENT_ENCODING = "UTF-8";
        
    private final VelocityEngine velocityEngine;
        private final MessageSource messageSource;

        @Autowired
    public EmailMakerServiceImpl(VelocityEngine velocityEngine, MessageSource messageSource) {
        this.velocityEngine = velocityEngine;
        this.messageSource = messageSource;
    }

        @Override
        public String emailMaker(Map<String, String> text, String templateName, Locale locale) {
                final String templateLocation = TEMPLATES_DEFAULT_PATH + templateName + TEMPLATES_DEFAULT_EXTENSION;
                final Map<String, Object> model = new HashMap<>();
                model.put("text", text);
                model.put("messageSource", messageSource);
                model.put("locale", locale);

                return VelocityEngineUtils.mergeTemplateIntoString(
                                velocityEngine, templateLocation, EMAIL_CONTENT_ENCODING, model);
        }

        @Override
        public String getSubject(String code, Locale locale, Object... args) {
                return messageSource.getMessage(code, args, locale);
        }

}