Added clock logic

rpi/models/clock.py

@@ -0,0 +1,76 @@
+import threading
+import time
+from datetime import datetime
+
+
+class Clock:
+    def __init__(self, value: int, increment: int) -> None:
+        self.millis = value * 1000
+        self.increment = increment * 1000
+
+        self._run_event = threading.Event()
+        self._terminate_event = threading.Event()
+        self._lock = threading.Lock()
+
+        self.thread = threading.Thread(target=self._update_clock, daemon=True)
+
+    # ---------- time computation ----------
+
+    def _compute_seconds(self) -> int:
+        return (self.millis // 1000) % 60
+
+    def _compute_minutes(self) -> int:
+        return self.millis // 60000
+
+    def _add_increment(self) -> None:
+        self.millis += self.increment
+
+    # ---------- thread logic ----------
+
+    def _update_clock(self):
+        while not self._terminate_event.is_set():
+            self._run_event.wait()
+
+            with self._lock:
+                if self.millis <= 0:
+                    self.millis = 0
+                    self._run_event.clear()
+                    break
+
+                self.millis -= 1
+
+            time.sleep(0.001)
+    # ---------- public API ----------
+    def is_running(self) -> bool:
+        return self._run_event.is_set()
+
+    def start(self) -> None:
+        self._run_event.set()
+        if not self.thread.is_alive():
+            self.thread = threading.Thread(target=self._update_clock, daemon=True)
+            self.thread.start()
+
+    def stop(self) -> None:
+        if self._run_event.is_set():
+            with self._lock:
+                self._add_increment()
+            self._run_event.clear()
+
+    def terminate(self) -> None:
+        self._terminate_event.set()
+        self._run_event.set()
+        self.thread.join()
+
+    def clock_to_str(self) -> str:
+        with self._lock:
+            minutes = self._compute_minutes()
+            seconds = self._compute_seconds()
+        return f"{minutes:02d}:{seconds:02d}"
+
+
+if __name__ == "__main__":
+    clock = Clock(600, 0)
+    clock.start()
+    while True:
+        time.sleep(1)
+        print(clock.clock_to_str())

rpi/models/player.py

@@ -0,0 +1,5 @@
+from clock import Clock
+
+class Player:
+    def __init__(self) -> None:
+        pass