add functionality to send attachmets, Fixes #113

src/model/mail.rs

@@ -1,8 +1,12 @@
-use std::error::Error;
+use std::{error::Error, fs};
 
 use lettre::{
-    message::header::ContentType, transport::smtp::authentication::Credentials, Message,
-    SmtpTransport, Transport,
+    message::{
+        header::{self, ContentType},
+        Attachment, MultiPart, SinglePart,
+    },
+    transport::smtp::authentication::Credentials,
+    Message, SmtpTransport, Transport,
 };
 use sqlx::SqlitePool;
 
@@ -13,7 +17,7 @@ use super::{family::Family, log::Log, role::Role, user::User};
 pub struct Mail {}
 
 impl Mail {
-    pub async fn send(db: &SqlitePool, data: MailToSend, smtp_pw: String) -> bool {
+    pub async fn send(db: &SqlitePool, data: MailToSend<'_>, smtp_pw: String) -> bool {
         let mut email = Message::builder()
             .from(
                 "ASKÖ Ruderverein Donau Linz <no-reply@rudernlinz.at>"
@@ -45,12 +49,30 @@ impl Mail {
             }
         }
 
-        // TODO: handle attachments
+        let mut multipart = MultiPart::mixed().singlepart(
+            SinglePart::builder()
+                .header(header::ContentType::TEXT_HTML)
+                .body(String::from(data.body)),
+        );
+
+        for temp_file in &data.files {
+            let content = fs::read(temp_file.path().unwrap()).unwrap();
+            let media_type = format!("{}", temp_file.content_type().unwrap().media_type());
+            let content_type = ContentType::parse(&media_type).unwrap();
+            let attachment = Attachment::new(format!(
+                "{}.{}",
+                temp_file.name().unwrap(),
+                temp_file.content_type().unwrap().extension().unwrap()
+            ))
+            .body(content, content_type);
+
+            multipart = multipart.singlepart(attachment);
+        }
 
         let email = email
             .subject(data.subject)
             .header(ContentType::TEXT_PLAIN)
-            .body(String::from(data.body))
+            .multipart(multipart)
             .unwrap();
 
         let creds = Credentials::new("no-reply@rudernlinz.at".to_owned(), smtp_pw);