Refactor reset_prepare() to reduce indents

src/main.rs

@@ -58,49 +58,40 @@ fn reset_prepare(config: &Ldap0rConfig, keys: &Keys, email_address: &str) -> Res
     ldap.unbind()?;
     let (rs, _res) = result.success()?;
 
-    if rs.len() == 1 {
+    if rs.len() != 1 {
-        // generate key
-        let mut rng = rand::thread_rng();
-        let key: String = (0..64)
-            .map(|_| BASE62[rng.gen::<usize>() % 62] as char)
-            .collect();
-
-        // store key with id
-        let keys = Arc::clone(&keys.keys);
-        if let Ok(mut keys) = keys.lock() {
-            keys.insert(key.to_string(), email_address.to_string());
-            debug!("Generated new key for '{}'", email_address);
-
-            // generate email
-            let email = EmailBuilder::new()
-                .to(email_address)
-                .from("ldap0r@example.com")
-                .subject("LDAP password reset")
-                .text(format!(
-                    "Use following url to set a new password: {}/reset/{}",
-                    config.domain, key
-                ))
-                .build()?;
-
-            // send email
-            let mut mailer = SmtpClient::new_unencrypted_localhost()?.transport();
-            let result = mailer.send(email.into());
-
-            if result.is_ok() {
-                info!("Password reset email was sent to '{}'", email_address);
-            } else {
-                bail!(
-                    "Sending password reset email with reset URL to '{}' failed",
-                    email_address
-                );
-            }
-        } else {
-            bail!("Could not aquire lock for keys");
-        };
-    } else {
         bail!("Invalid password reset request for '{}'", email_address);
     }
 
+    // generate key
+    let mut rng = rand::thread_rng();
+    let key: String = (0..64)
+        .map(|_| BASE62[rng.gen::<usize>() % 62] as char)
+        .collect();
+
+    // store key with id
+    let keys = Arc::clone(&keys.keys);
+    let mut keys = keys
+        .lock()
+        .map_err(|e| anyhow!("Could not aquire lock for keys: {}", e))?;
+    keys.insert(key.to_string(), email_address.to_string());
+    debug!("Generated new key for '{}'", email_address);
+
+    // generate email
+    let email = EmailBuilder::new()
+        .to(email_address)
+        .from("ldap0r@example.com")
+        .subject("LDAP password reset")
+        .text(format!(
+            "Use following url to set a new password: {}/reset/{}",
+            config.domain, key
+        ))
+        .build()?;
+
+    // send email
+    let mut mailer = SmtpClient::new_unencrypted_localhost()?.transport();
+    mailer.send(email.into())?;
+    info!("Password reset email was sent to '{}'", email_address);
+
     Ok(())
 }