From d81b3e164fba4040fc751d632be04214483a8761 Mon Sep 17 00:00:00 2001
From: Vincent Breitmoser <look@my.amazin.horse>
Date: Sun, 13 Jan 2019 12:01:15 +0100
Subject: icalwrap: add is_recur_valid method

---
 src/icalwrap/icalvevent.rs | 78 +++++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 74 insertions(+), 4 deletions(-)

(limited to 'src/icalwrap/icalvevent.rs')

diff --git a/src/icalwrap/icalvevent.rs b/src/icalwrap/icalvevent.rs
index 278d737..b05167a 100644
--- a/src/icalwrap/icalvevent.rs
+++ b/src/icalwrap/icalvevent.rs
@@ -101,9 +101,12 @@ impl IcalVEvent {
     }
   }
 
-  pub fn has_recur(&self) -> bool {
+  pub fn is_recur_master(&self) -> bool {
+    self.is_recur() && self.instance_timestamp.is_none()
+  }
+
+  pub fn is_recur(&self) -> bool {
     !self.get_properties(ical::icalproperty_kind_ICAL_RRULE_PROPERTY).is_empty()
-    & self.instance_timestamp.is_none()
   }
 
   pub fn get_recur_datetimes(&self) -> Vec<DateTime<Utc>> {
@@ -123,6 +126,21 @@ impl IcalVEvent {
     result
   }
 
+  pub fn is_recur_valid(&self) -> bool {
+    if self.instance_timestamp.is_none() {
+     return true;
+    }
+
+    let timestamp = self.instance_timestamp.unwrap();
+
+    if self.is_recur() {
+      let recur_times = self.get_recur_datetimes();
+      return recur_times.contains(&timestamp.with_timezone(&Utc));
+    }
+
+    self.get_dtstart() == Some(timestamp)
+  }
+
   pub fn with_internal_timestamp(&self, datetime: DateTime<Local>) -> IcalVEvent {
     IcalVEvent {
       ptr: self.ptr,
@@ -302,9 +320,23 @@ mod tests {
   }
 
   #[test]
-  fn has_recur_test() {
+  fn test_is_recur_master() {
     let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_RECUR, None).unwrap();
-    assert!(cal.get_principal_event().has_recur());
+    assert!(cal.get_principal_event().is_recur_master());
+  }
+
+  #[test]
+  fn test_is_recur_master_instance() {
+    let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_RECUR, None).unwrap();
+    let event = cal.get_principal_event();
+    let event = event.with_internal_timestamp(Local.ymd(2018, 01, 01).and_hms(0, 0, 0));
+    assert!(!event.is_recur_master());
+  }
+
+  #[test]
+  fn test_is_recur_master_invalid() {
+    let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_ONE_MEETING, None).unwrap();
+    assert!(!cal.get_principal_event().is_recur_master());
   }
 
   #[test]
@@ -317,5 +349,43 @@ mod tests {
     assert_eq!(Utc.ymd(2018, 10, 18).and_hms(0, 0, 0).with_timezone(&Local), recur_instances.next().unwrap().get_dtstart().unwrap());
   }
 
+  #[test]
+  fn test_is_recur_valid_trivial() {
+    let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_RECUR, None).unwrap();
+    let event = cal.get_principal_event();
+
+    assert!(event.is_recur_valid());
+  }
+
+  #[test]
+  fn test_is_recur_valid_dtstart() {
+    let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_RECUR, None).unwrap();
+    let event = cal.get_principal_event();
+
+    let event = event.with_internal_timestamp(event.get_dtstart().unwrap());
+
+    assert!(event.is_recur_valid());
+  }
+
+  #[test]
+  fn test_is_recur_valid_incorrect() {
+    let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_RECUR, None).unwrap();
+    let event = cal.get_principal_event();
+
+    let event = event.with_internal_timestamp(Utc.ymd(2010, 01, 01).and_hms(0, 0, 0).with_timezone(&Local));
+
+    assert!(!event.is_recur_valid());
+  }
+
+  #[test]
+  fn test_is_recur_valid_other() {
+    let cal = IcalVCalendar::from_str(testdata::TEST_EVENT_RECUR, None).unwrap();
+    let event = cal.get_principal_event();
+
+    let event = event.with_internal_timestamp(Utc.ymd(2018, 10, 25).and_hms(0, 0, 0).with_timezone(&Local));
+
+    assert!(event.is_recur_valid());
+  }
+
 
 }
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