From 98c8d2ac6e83a18bf33f7cb803d266599ba58ab0 Mon Sep 17 00:00:00 2001
From: Nathan Fisher <jeang3nie@hitchhiker-linux.org>
Date: Mon, 5 Jun 2023 11:10:53 -0400
Subject: [PATCH] Add `FromStr` for `Recipients`

---
 src/message/error.rs |  9 ++++++++-
 src/message/mod.rs   | 18 +++++++++++++++++-
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/src/message/error.rs b/src/message/error.rs
index 20d4b7c..0097d6a 100644
--- a/src/message/error.rs
+++ b/src/message/error.rs
@@ -1,4 +1,4 @@
-use {crate::prelude::ParseHostError, std::fmt};
+use {crate::prelude::{ParseHostError, ParseMailboxError}, std::fmt};
 
 #[derive(Debug, PartialEq)]
 /// Errors which can occur when parsing a request
@@ -8,6 +8,7 @@ pub enum Error {
     EmptyHost,
     EmptyMessage,
     ParseHostError(ParseHostError),
+    ParseMailboxError(ParseMailboxError),
     MalformedLink,
 }
 
@@ -34,3 +35,9 @@ impl From<ParseHostError> for Error {
         Self::ParseHostError(value)
     }
 }
+
+impl From<ParseMailboxError> for Error {
+    fn from(value: ParseMailboxError) -> Self {
+        Self::ParseMailboxError(value)
+    }
+}
diff --git a/src/message/mod.rs b/src/message/mod.rs
index 4b16693..6acd3e3 100644
--- a/src/message/mod.rs
+++ b/src/message/mod.rs
@@ -1,4 +1,4 @@
-use crate::prelude::{Host, Mailbox};
+use crate::prelude::Mailbox;
 use std::{fmt, str::FromStr};
 
 #[cfg(feature = "serde")]
@@ -25,6 +25,22 @@ impl fmt::Display for Recipients {
     }
 }
 
+impl FromStr for Recipients {
+    type Err = Error;
+
+    fn from_str(s: &str) -> Result<Self, Self::Err> {
+        let mut rec = Recipients { boxes: vec![] };
+        if let Some(s) = s.strip_prefix(':') {
+            s.split_whitespace().try_for_each(|r| {
+                let r = r.parse()?;
+                rec.boxes.push(r);
+                Ok::<(), Error>(())
+            })?;
+        }
+        Ok(rec)
+    }
+}
+
 #[derive(Debug, Clone, PartialEq)]
 #[cfg_attr(feature = "serde", derive(Deserialize, Serialize))]
 pub struct Message {