Add relay pulse functionality

emgauwa-lib/src/models/relay.rs

@@ -1,3 +1,5 @@
+use std::time::Instant;
+
 use chrono::NaiveTime;
 use futures::executor::block_on;
 use serde_derive::{Deserialize, Serialize};
@@ -19,6 +21,10 @@ pub struct Relay {
 	pub active_schedule: DbSchedule,
 	pub is_on: Option<bool>,
 	pub tags: Vec<String>,
+
+	// for internal use only.
+	#[serde(skip)]
+	pub pulsing: Option<Instant>,
 }
 
 
@@ -55,6 +61,7 @@ impl FromDbModel for Relay {
 			active_schedule,
 			is_on,
 			tags,
+			pulsing: None,
 		})
 	}
 }
@@ -83,4 +90,18 @@ impl Relay {
 	pub fn get_next_time(&self, now: &NaiveTime) -> Option<NaiveTime> {
 		self.active_schedule.get_next_time(now)
 	}
+
+	pub fn check_pulsing(&mut self, now: &Instant) -> Option<Instant> {
+		match self.pulsing {
+			Some(dur_instant) => {
+				if dur_instant.lt(now) {
+					self.pulsing = None;
+					None
+				} else {
+					Some(dur_instant)
+				}
+			}
+			None => None,
+		}
+	}
 }