From e8a0cb618a5848ae930220f8152140bfdb4d6f6b Mon Sep 17 00:00:00 2001
From: Santo Cariotti <santo@dcariotti.me>
Date: Fri, 4 Dec 2020 20:07:09 +0100
Subject: feat: send emails

---
 src/main.rs | 45 +++++++++++++++++++++++++++++++++++++++++----
 1 file changed, 41 insertions(+), 4 deletions(-)

(limited to 'src/main.rs')

diff --git a/src/main.rs b/src/main.rs
index f80069f..b1f36da 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,7 +1,12 @@
 extern crate clap;
+extern crate lettre;
+
 use clap::{App, Arg};
+use lettre::transport::smtp::authentication::Credentials;
+use lettre::{Message, SmtpTransport, Transport};
 use rand::prelude::*;
 use std::collections::HashMap;
+use std::env;
 use std::fs;
 
 fn my_gift_to(players: &mut Vec<String>) -> Option<&String> {
@@ -32,7 +37,24 @@ fn main() {
     let contents = fs::read_to_string(config_file)
         .expect("Error occurs reading this file")
         .to_string();
-    let mut members_data: Vec<&str> = contents.split("\n").collect();
+
+    let config_email;
+    let config_password;
+    let host;
+    match env::var("EMAIL") {
+        Ok(v) => config_email = v.to_string(),
+        Err(e) => panic!("Must provide EMAIL: {}", e),
+    }
+    match env::var("PASSWORD") {
+        Ok(v) => config_password = v.to_string(),
+        Err(e) => panic!("Must provide PASSWORD: {}", e),
+    }
+    match env::var("HOST") {
+        Ok(v) => host = v,
+        Err(e) => panic!("Must provide HOST: {}", e),
+    }
+
+    let mut members_data: Vec<&str> = contents.split(">\n").collect();
 
     // ignore the last element, cause it's empty
     members_data.pop();
@@ -42,7 +64,7 @@ fn main() {
 
     let mut members = HashMap::new();
     for member in members_data {
-        let details: Vec<&str> = member.split(" ").collect();
+        let details: Vec<&str> = member.split("<").collect();
 
         // <email> : <name>
         members.insert(details[1], details[0]);
@@ -53,7 +75,13 @@ fn main() {
     for (email, _) in &members {
         emails.push(email.to_string());
     }
-    println!("{:?}", emails);
+
+    let creds = Credentials::new(config_email, config_password);
+
+    let mailer = SmtpTransport::relay(&host)
+        .unwrap()
+        .credentials(creds)
+        .build();
 
     for (email, name) in members.into_iter() {
         loop {
@@ -62,7 +90,16 @@ fn main() {
                     if gift_to.to_string() != email.to_string()
                         && !done.iter().any(|v| v == gift_to)
                     {
-                        println!("{} {}", email, gift_to);
+                        let mail = Message::builder()
+                            .from("Santo Cariotti <santo@dcariotti.me>".parse().unwrap())
+                            .to(format!("{} <{}>", name, email).parse().unwrap())
+                            .subject("Secret Santa!")
+                            .body(format!("You're the Secret Santa of:\n{}", name))
+                            .unwrap();
+                        match mailer.send(&mail) {
+                            Ok(_) => println!("Email sent successfully to {}!", email),
+                            Err(e) => panic!("Could not send email: {:?}", e),
+                        }
                         done.push(gift_to.to_string());
                         break;
                     }
-- 
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