feat(mail): send mail notification after print

Cargo.toml

@@ -31,3 +31,4 @@ clap_complete = "^4.4"
 sha256 = "^1.4"
 anyhow = "^1.0"
 mail-send = "^0.4.6"
+tokio = "1.35.1"

src/config/mod.rs

@@ -2,6 +2,7 @@ pub use crate::config::task::Task;
 use crate::config::yaml_trait::YamlTasksScheduler;
 use anyhow::{anyhow, Result};
 use std::collections::HashMap;
+use tokio::runtime::Runtime;
 use yaml_rust::YamlLoader;
 
 mod task;
@@ -206,15 +207,23 @@ impl Notification {
       }
     }
 
-    if let Some(email) = self.email() {
+    if let Some(email) = self.email().clone() {
       if let Some(when) = email.when() {
         if !when.should_notify(&WhenNotify::TaskEnd) {
           return;
         }
       }
-      if let Err(e) = crate::notification::notification_email(&email, msg.as_str()) {
-        eprintln!("Can't use email notification: {}", e);
-      }
+
+      match Runtime::new() {
+        Ok(rt) => {
+          rt.block_on(async {
+            if let Err(e) = crate::notification::notification_email(&email, msg.as_str()).await {
+              eprintln!("Can't use email notification: {}", e);
+            }
+          });
+        }
+        Err(e) => eprint!("Can't use email notification: {}", e),
+      };
     }
   }
 

src/notification/mail.rs

@@ -1,5 +1,26 @@
 use crate::config::Mail;
+use anyhow::{anyhow, Result};
+use mail_send::{mail_builder::MessageBuilder, Credentials, SmtpClientBuilder};
 
-pub fn notification_email(mail: &Mail, message: &str) -> Result<(), String> {
+pub async fn notification_email(mail: &Mail, body: &str) -> Result<()> {
+  let message = MessageBuilder::new()
+    .from(mail.from().clone())
+    .to(mail.to().clone())
+    .subject(mail.subject())
+    .html_body(format!("<p>{}</p>", body))
+    .text_body(body);
+
+  SmtpClientBuilder::new(mail.smtp_hostname(), mail.smtp_port())
+    .implicit_tls(mail.smtp_tls())
+    .credentials(Credentials::Plain {
+      username: mail.smtp_username(),
+      secret: mail.smtp_secret(),
+    })
+    .connect()
+    .await
+    .map_err(|e| anyhow!("Connection to SMTP failed: {}", e))?
+    .send(message)
+    .await
+    .map_err(|e| anyhow!("Failed to sending email: {}", e))?;
   Ok(())
 }