Add email notification service for appeals using Spring Mail and Thymeleaf templates.

backend/build.gradle.kts

@@ -36,6 +36,8 @@ dependencies {
     implementation("org.springframework.boot:spring-boot-starter-security")
     implementation("org.springframework.security:spring-security-oauth2-resource-server")
     implementation("org.springframework.security:spring-security-oauth2-jose")
+    implementation("org.springframework.boot:spring-boot-starter-mail:3.1.5")
+    implementation("org.springframework.boot:spring-boot-starter-thymeleaf")
 
     //AOP
     implementation("org.aspectj:aspectjrt:1.9.19")

backend/src/main/java/com/alttd/altitudeweb/AltitudeWebApplication.java

@@ -5,7 +5,7 @@ import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;
 import org.springframework.context.annotation.EnableAspectJAutoProxy;
 
-@SpringBootApplication
+@SpringBootApplication(scanBasePackages = {"com.alttd.altitudeweb"})
 @EnableAspectJAutoProxy
 public class AltitudeWebApplication {
 

backend/src/main/java/com/alttd/altitudeweb/controllers/forms/AppealController.java

@@ -10,6 +10,7 @@ import com.alttd.altitudeweb.model.DiscordAppealDto;
 import com.alttd.altitudeweb.model.MinecraftAppealDto;
 import com.alttd.altitudeweb.model.UpdateMailDto;
 import com.alttd.altitudeweb.services.limits.RateLimit;
+import com.alttd.altitudeweb.services.mail.AppealMail;
 import com.alttd.altitudeweb.setup.Connection;
 import lombok.AllArgsConstructor;
 import lombok.extern.slf4j.Slf4j;
@@ -29,6 +30,7 @@ import java.util.concurrent.TimeUnit;
 public class AppealController implements AppealsApi {
 
     private final AppealDataMapper mapper;
+    private final AppealMail appealMail;
 
     @RateLimit(limit = 3, timeValue = 1, timeUnit = TimeUnit.HOURS, key = "discordAppeal")
     @Override
@@ -55,6 +57,8 @@ public class AppealController implements AppealsApi {
                   });
         Appeal appeal = appealCompletableFuture.join();
 
+        appealMail.sendAppealNotification(appeal);
+
         AppealResponseDto appealResponseDto = new AppealResponseDto(
                 appeal.id().toString(),
                 "Your appeal has been submitted. You will be notified when it has been reviewed.",

backend/src/main/java/com/alttd/altitudeweb/services/mail/AppealMail.java

@@ -0,0 +1,61 @@
+package com.alttd.altitudeweb.services.mail;
+
+import com.alttd.altitudeweb.database.web_db.forms.Appeal;
+import jakarta.mail.MessagingException;
+import jakarta.mail.internet.MimeMessage;
+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.stereotype.Service;
+import org.thymeleaf.context.Context;
+import org.thymeleaf.spring6.SpringTemplateEngine;
+
+@Slf4j
+@Service
+@RequiredArgsConstructor
+public class AppealMail {
+
+    private final JavaMailSender mailSender;
+
+    @Value("${spring.mail.username}")
+    private String fromEmail;
+
+    private static final String APPEAL_EMAIL = "[email protected]";
+
+    /**
+     * Sends an email notification about the appeal to both the user and the appeals team.
+     *
+     * @param appeal The appeal object containing all necessary information
+     */
+    public void sendAppealNotification(Appeal appeal) {
+        try {
+            sendEmailToAppealsTeam(appeal);
+
+            log.info("Appeal notification emails sent successfully for appeal ID: {}", appeal.id());
+        } catch (Exception e) {
+            log.error("Failed to send appeal notification emails for appeal ID: {}", appeal.id(), e);
+        }
+    }
+
+    private SpringTemplateEngine templateEngine;
+
+    private void sendEmailToAppealsTeam(Appeal appeal) throws MessagingException {
+        MimeMessage message = mailSender.createMimeMessage();
+        MimeMessageHelper helper = new MimeMessageHelper(message, true);
+
+        helper.setFrom(fromEmail);
+        helper.setTo(APPEAL_EMAIL);
+        helper.setReplyTo(appeal.email());
+        helper.setSubject("New Appeal Submitted - " + appeal.username());
+
+        Context context = new Context();
+        context.setVariable("appeal", appeal);
+        String content = templateEngine.process("appeal-email", context);
+
+        helper.setText(content, true);
+        mailSender.send(message);
+    }
+
+}

backend/src/main/resources/application.properties

@@ -10,3 +10,10 @@ particles.file_path=${user.home}/.altitudeweb/particles
 notification.server.url=${SERVER_IP:10.0.0.107}:${SERVER_PORT:8080}
 my-server.address=${SERVER_ADDRESS:https://alttd.com}
 logging.level.com.alttd.altitudeweb=INFO
+discord.token=${DISCORD_TOKEN}
+spring.mail.host=${MAIL_HOST:smtp.zoho.com}
+spring.mail.port=${MAIL_PORT:465}
+spring.mail.username=${MAIL_USER}
+spring.mail.password=${MAIL_PASSWORD}
+spring.mail.properties.mail.smtp.auth=true
+spring.mail.properties.mail.smtp.starttls.enable=true

backend/src/main/resources/templates/appeal-email.html

@@ -0,0 +1,25 @@
+<!DOCTYPE html>
+<html xmlns:th="http://www.thymeleaf.org" lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Appeal Notification</title>
+    <style>
+        ul {
+            list-style-type: none;
+            padding-left: 20px;
+        }
+    </style>
+</head>
+<body>
+<h2 th:text="'Appeal by ' + ${appeal.username}">Appeal by Username</h2>
+<p>Punishment information</p>
+<ul>
+    <li><strong>Username:</strong> <span th:text="${appeal.username}">username</span></li>
+    <li><strong>UUID:</strong> <span th:text="${appeal.uuid}">uuid</span></li>
+    <li><strong>Email:</strong> <span th:text="${appeal.email}">email</span></li>
+    <li><strong>Submitted:</strong> <span th:text="${appeal.createdAt}">date</span></li>
+</ul>
+<h3>Appeal:</h3>
+<p th:text="${appeal.reason}">Reason text</p>
+</body>
+</html>