From 64bc256d31d64230d40330600432a0ac5708dac8 Mon Sep 17 00:00:00 2001
From: Matthias Beyer <mail@beyermatthias.de>
Date: Sun, 6 Oct 2019 17:22:15 +0200
Subject: Add helper trait for generating instances of Dtend/start/stamp

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>
---
 src/icalendar.rs | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/src/icalendar.rs b/src/icalendar.rs
index c49e193..66933f9 100644
--- a/src/icalendar.rs
+++ b/src/icalendar.rs
@@ -163,6 +163,11 @@ pub trait AsDateTime {
     fn as_datetime(&self) -> Result<Time>;
 }
 
+#[cfg(feature = "timeconversions")]
+pub trait FromDateTime : Sized {
+    fn from_datetime(NaiveDateTime) -> Self;
+}
+
 #[cfg(feature = "timeconversions")]
 impl AsDateTime for Dtend {
 
@@ -177,6 +182,13 @@ impl AsDateTime for Dtend {
 
 }
 
+#[cfg(feature = "timeconversions")]
+impl FromDateTime for Dtend {
+    fn from_datetime(ndt: NaiveDateTime) -> Self {
+        Dtend(ndt.format(DATE_TIME_FMT).to_string(), BTreeMap::default())
+    }
+}
+
 #[cfg(feature = "timeconversions")]
 impl AsDateTime for Dtstart {
 
@@ -191,6 +203,13 @@ impl AsDateTime for Dtstart {
 
 }
 
+#[cfg(feature = "timeconversions")]
+impl FromDateTime for Dtstart {
+    fn from_datetime(ndt: NaiveDateTime) -> Self {
+        Dtstart(ndt.format(DATE_TIME_FMT).to_string(), BTreeMap::default())
+    }
+}
+
 #[cfg(feature = "timeconversions")]
 impl AsDateTime for Dtstamp {
 
@@ -205,6 +224,13 @@ impl AsDateTime for Dtstamp {
 
 }
 
+#[cfg(feature = "timeconversions")]
+impl FromDateTime for Dtstamp {
+    fn from_datetime(ndt: NaiveDateTime) -> Self {
+        Dtstamp(ndt.format(DATE_TIME_FMT).to_string(), BTreeMap::default())
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct EventBuilder(Component);
 
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