Setup credentials from environment variables

README.md

@@ -14,20 +14,12 @@ In Swift 5.2 manifests, this looks like the following:
 ```
 
 ## Setup
+Create a `.env` file in your project directory, then put in the credentials for your smtp server:
 
-```swift
-import VaporSMTPKit
-
-extension SMTPCredentials {
-    static var `default`: SMTPCredentials {
-        return SMTPCredentials(
-            hostname: "smtp.example.com",
-            ssl: .startTLS(configuration: .default),
-            email: "noreply@example.com",
-            password: "<SECRET>"
-        )
-    }
-}
+```
+SMTP_SERVER=smtp.example.com
+SMTP_ACCOUNT=noreply@example.com
+SMTP_PASSWORD=SECRET
 ```
 
 ### Sending a Mail
@@ -44,7 +36,7 @@ app.get { request -> EventLoopFuture<String> in
         text: "You've set up mail!"
     )
 
-    return request.application.sendMail(email, withCredentials: .default).map { 
+    return request.application.sendMail(email).map { 
         return "Check your mail!"
     }
 }

Sources/VaporSMTPKit/VaporSMTPKit.swift

@@ -4,15 +4,15 @@ import SMTPKitten
 extension Application {
     public func sendMail(
         _ mail: Mail,
-        withCredentials credentials: SMTPCredentials,
+        withCredentials credentials: SMTPCredentials = Application.defaultSMTPCredentials,
         preventedDomains: Set<String> = ["example.com"]
     ) -> EventLoopFuture<Void> {
         return sendMails([mail], withCredentials: credentials, preventedDomains: preventedDomains)
     }
 
     public func sendMails(
         _ mails: [Mail],
-        withCredentials credentials: SMTPCredentials,
+        withCredentials credentials: SMTPCredentials = Application.defaultSMTPCredentials,
         preventedDomains: Set<String> = ["example.com"]
     ) -> EventLoopFuture<Void> {
         func filterMailAddress(_ address: MailUser) -> Bool {
@@ -78,3 +78,14 @@ public struct SMTPCredentials {
         self.password = password
     }
 }
+
+extension Application {
+    public static var defaultSMTPCredentials: SMTPCredentials {
+        return SMTPCredentials(
+            hostname: Environment.get("SMTP_SERVER") ?? "smtp.example.com",
+            ssl: .startTLS(configuration: .default),
+            email: Environment.get("SMTP_ACCOUNT") ?? "noreply@example.com",
+            password: Environment.get("SMTP_PASSWORD") ?? "<SECRET>"
+        )
+    }
+}