[+] Email service

src/main/java/icu/samnyan/aqua/net/utils/Email.kt

@@ -3,9 +3,12 @@ package icu.samnyan.aqua.net.utils
 import ext.Bool
 import ext.Str
 import icu.samnyan.aqua.net.db.AquaNetUser
+import jakarta.annotation.PostConstruct
 import org.simplejavamail.api.mailer.Mailer
 import org.simplejavamail.email.EmailBuilder
 import org.simplejavamail.springsupport.SimpleJavaMailSpringSupport
+import org.slf4j.Logger
+import org.slf4j.LoggerFactory
 import org.springframework.boot.context.properties.ConfigurationProperties
 import org.springframework.context.annotation.Configuration
 import org.springframework.context.annotation.Import
@@ -20,3 +23,53 @@ class EmailProperties {
 
     lateinit var senderAddr: Str
 }
+
+/**
+ * Email service. All email related operations should be placed here.
+ *
+ * Library Documentation: https://www.simplejavamail.org/
+ */
+@Service
+@Import(SimpleJavaMailSpringSupport::class)
+class EmailService(
+    val mailer: Mailer,
+    val props: EmailProperties,
+) {
+    val log: Logger = LoggerFactory.getLogger(EmailService::class.java)
+
+    /**
+     * Test the connection of the email service on startup
+     */
+    @PostConstruct
+    fun testConnection() {
+        if (!props.enable) return
+
+        try {
+            mailer.testConnection()
+            log.info("Email Service Connected")
+        } catch (e: Exception) {
+            log.error("Email Service Connection Failed", e)
+        }
+    }
+
+    /**
+     * Send a confirmation email to the user
+     */
+    fun confirmationEmail(user: AquaNetUser) {
+
+    }
+
+    fun testEmail(addr: Str, name: Str) {
+        if (!props.enable) return
+
+        log.info("Sending test email to $addr")
+        mailer.sendMail(EmailBuilder.startingBlank()
+            .from(props.senderName, props.senderAddr)
+            .to(name, addr)
+            .withSubject("Test Email")
+            .withPlainText("This is a test email to check if AquaNet Email Works").buildEmail()).thenRun {
+                log.info("Test email sent to $addr")
+
+        }
+    }
+}