(refs #10) Add notification email form.

src/main/scala/service/SystemSettingsService.scala

@@ -9,6 +9,14 @@ trait SystemSettingsService {
     val props = new java.util.Properties()
     props.setProperty(AllowAccountRegistration, settings.allowAccountRegistration.toString)
     props.setProperty(Gravatar, settings.gravatar.toString)
+    props.setProperty(Notification, settings.notification.toString)
+    if(settings.notification) {
+      props.setProperty(SmtpHost, settings.smtp.host)
+      settings.smtp.port.foreach(x => props.setProperty(SmtpPort, x.toString))
+      settings.smtp.user.foreach(props.setProperty(SmtpUser, _))
+      settings.smtp.password.foreach(props.setProperty(SmtpPassword, _))
+      settings.smtp.ssl.foreach(x => props.setProperty(SmtpSsl, x.toString))
+    }
     props.store(new java.io.FileOutputStream(GitBucketConf), null)
   }
 
@@ -19,29 +27,62 @@ trait SystemSettingsService {
       props.load(new java.io.FileInputStream(GitBucketConf))
     }
     SystemSettings(
-      getBoolean(props, AllowAccountRegistration),
-      getBoolean(props, Gravatar, true))
+      getValue(props, AllowAccountRegistration, false),
+      getValue(props, Gravatar, true),
+      getValue(props, Notification, false),
+      Smtp(
+        getValue(props, SmtpHost, ""),
+        getOptionValue(props, SmtpPort, Some(25)),
+        getOptionValue(props, SmtpUser, None),
+        getOptionValue(props, SmtpPassword, None),
+        getOptionValue[Boolean](props, SmtpSsl, None)
+    ))
   }
 
 }
 
 object SystemSettingsService {
+  import scala.reflect.ClassTag
 
   case class SystemSettings(
     allowAccountRegistration: Boolean,
-    gravatar: Boolean
+    gravatar: Boolean,
+    notification: Boolean,
+    smtp: Smtp
   )
+  case class Smtp(
+    host: String,
+    port: Option[Int],
+    user: Option[String],
+    password: Option[String],
+    ssl: Option[Boolean])
 
   private val AllowAccountRegistration = "allow_account_registration"
   private val Gravatar = "gravatar"
+  private val Notification = "notification"
+  private val SmtpHost = "smtp.host"
+  private val SmtpPort = "smtp.port"
+  private val SmtpUser = "smtp.user"
+  private val SmtpPassword = "smtp.password"
+  private val SmtpSsl = "smtp.ssl"
 
-  private def getBoolean(props: java.util.Properties, key: String, default: Boolean = false): Boolean = {
+  private def getValue[A: ClassTag](props: java.util.Properties, key: String, default: A): A = {
     val value = props.getProperty(key)
-    if(value == null || value.isEmpty){
-      default
-    } else {
-      value.toBoolean
-    }
+    if(value == null || value.isEmpty) default
+    else convertType(value).asInstanceOf[A]
+  }
+
+  private def getOptionValue[A: ClassTag](props: java.util.Properties, key: String, default: Option[A]): Option[A] = {
+    val value = props.getProperty(key)
+    if(value == null || value.isEmpty) default
+    else Some(convertType(value)).asInstanceOf[Option[A]]
+  }
+
+  private def convertType[A: ClassTag](value: String) = {
+    val c = implicitly[ClassTag[A]].runtimeClass
+    if(c == classOf[Boolean])  value.toBoolean
+    else if(c == classOf[Int]) value.toInt
+    else value
   }
 
 }