package ru.mcs.diary.common.email;

import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.mail.javamail.JavaMailSender;
import org.springframework.mail.javamail.MimeMessageHelper;
import org.springframework.scheduling.annotation.Async;
import org.springframework.stereotype.Service;

@Slf4j
@Service
@RequiredArgsConstructor
public class EmailService {

    private final JavaMailSender mailSender;

    @Value("${spring.mail.username:noreply@teacher-diary.local}")
    private String fromEmail;

    @Value("${app.mail.enabled:false}")
    private boolean mailEnabled;

    @Async
    public void sendEmail(String to, String subject, String htmlContent) {
        if (!mailEnabled) {
            // В режиме разработки просто логируем
            log.info("=== EMAIL (mock mode) ===");
            log.info("To: {}", to);
            log.info("Subject: {}", subject);
            log.info("Content: {}", htmlContent);
            log.info("=========================");
            return;
        }

        try {
            var message = mailSender.createMimeMessage();
            var helper = new MimeMessageHelper(message, true, "UTF-8");

            helper.setFrom(fromEmail);
            helper.setTo(to);
            helper.setSubject(subject);
            helper.setText(htmlContent, true);

            mailSender.send(message);
            log.info("Email sent to: {}", to);
        } catch (Exception e) {
            log.error("Failed to send email to {}: {}", to, e.getMessage());
        }
    }
}