Use croniter

screenshotter/config.yaml

@@ -1,6 +1,6 @@
 ---
 name: E-Paper Screenshotter
-version: 1.0.1.12
+version: 1.0.1.13
   #image: ghcr.io/maxwinterstein/homeassistant-addon-toogoodtogo-ha-mqtt-bridge-{arch}
 slug: screenshotter
 description: Screenshot images for E-Paper pricetags

screenshotter/rootfs/app/app.py

@@ -5,6 +5,7 @@ import time, os
 from selenium.webdriver.common.desired_capabilities import DesiredCapabilities
 import yaml
 import datetime
+import croniter
 
 # enable browser logging
 d = DesiredCapabilities.CHROME
@@ -35,7 +36,10 @@ with open(config_file, "r") as stream:
 tasks = []
 
 for image in config["images"]:
-    image["next_execution"] = datetime.datetime.now()
+    now = datetime.datetime.now()
+    image["croniter"] = croniter.croniter(image["cron"], now)
+    image["next_execution"] = image["croniter"].get_next(datetime.datetime)
+    print(f"First execution of {image['name']} at {image['next_execution']}.")
     tasks += [image]
 
 while True:
@@ -66,6 +70,6 @@ while True:
         image = image.rotate(int(rotate), expand=True)
         file_name = f'{image_path}/{task["name"]}.png'
         image.save(file_name)
-        tasks[i]["next_execution"] = datetime.datetime.now() + datetime.timedelta(minutes=task["period_minutes"])
+        tasks[i]["next_execution"] = task["croniter"].get_next(datetime.datetime)
         print(f"Task finished, next execution: {tasks[i]['next_execution']}")
     time.sleep(1)

screenshotter/rootfs/app/config.yaml

@@ -1,4 +1,4 @@
 images:
   - name: "001100"
     url: https://ha.baubs.net/lovelace-teflons/0?kiosk
-    period_minutes: 1 
+    cron: "*/5 * * * *" 

screenshotter/rootfs/app/requirements.txt

@@ -1,3 +1,4 @@
 selenium
 Pillow
 pyyaml
+croniter