package com.vincent.rsf.server.common.service;

import com.alibaba.fastjson.JSON;
import com.vincent.rsf.common.utils.Utils;
import com.vincent.rsf.framework.common.Cools;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.MailException;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.stereotype.Service;

import javax.mail.MessagingException;
import javax.mail.internet.MimeMessage;
import java.util.Map;

@Slf4j
@Service
public class EmailService {

    @Value("${spring.mail.username}")
    private String from;

    private final static String TEMPLATE = "Your verification code is: ${code}";

    @Autowired
    @SuppressWarnings("all")
    private JavaMailSender mailSender;

    public boolean sendEmail(String to, String subject, Map<String, Object> param) {

        String content = "Your verification code is: ${code}";
        if (!Cools.isEmpty(param) && !param.isEmpty()) {
            content = Utils.processTemplate(content, param);
        }

        boolean sendRes = this.send(this.from, to, subject, content);
        if (sendRes) {
            log.info("Email sent successfully. To: {}, Subject: {}, Parameter: {}"
                    , to
                    , subject
                    , JSON.toJSONString(param));
        }
        return sendRes;
    }

    public boolean send(String from, String to, String subject, String content) {
        try {
            MimeMessage message = mailSender.createMimeMessage();
            message.setFrom(from);

            MimeMessageHelper helper = new MimeMessageHelper(message, true);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(content);

            mailSender.send(message);
            return true;
        } catch (MailException | MessagingException e) {
            log.error(this.getClass().getSimpleName(), e);
            return false;
        }
    }

}