Screenshot rein und Uhrzeit aus GPS

ExoMy_Software-master/scripts/exomy_admin_api.py

@@ -1,4 +1,5 @@
 #!/usr/bin/env python3
+import datetime
 import errno
 import fcntl
 import glob
@@ -12,6 +13,7 @@ import subprocess
 import termios
 import threading
 import time
+from zoneinfo import ZoneInfo
 
 PORT = 8082
 EXOMY_CONTAINER = 'exomy_autostart'
@@ -606,6 +608,74 @@ def cold_start_gps_receiver():
     return device_path
 
 
+def read_gps_diagnostics_from_ros():
+    command = [
+        'docker', 'exec', EXOMY_CONTAINER, 'bash', '-lc',
+        "source /opt/ros/melodic/setup.bash && "
+        "source /root/exomy_ws/devel/setup.bash && "
+        "timeout 8s rostopic echo -n 1 /gps/diagnostics_json"
+    ]
+    stdout, stderr, returncode = run_command(command)
+    if returncode != 0 or not stdout:
+        raise RuntimeError('Keine GPS-Diagnosedaten verfügbar')
+
+    raw_text = stdout.strip()
+    lines = [line.strip() for line in raw_text.splitlines() if line.strip()]
+    if not lines:
+        raise RuntimeError('GPS-Diagnosedaten sind leer')
+
+    if lines[0].startswith('data:'):
+        payload_text = lines[0][5:].strip()
+        if payload_text.startswith("'") and payload_text.endswith("'"):
+            payload_text = payload_text[1:-1]
+        payload_text = payload_text.encode('utf-8').decode('unicode_escape')
+    else:
+        payload_text = lines[0]
+
+    try:
+        return json.loads(payload_text)
+    except json.JSONDecodeError as exc:
+        raise RuntimeError(f'GPS-Diagnosedaten konnten nicht gelesen werden: {exc}')
+
+
+def parse_gps_datetime():
+    diagnostics = read_gps_diagnostics_from_ros()
+    utc_date = str(diagnostics.get('utc_date') or '').strip()
+    utc_time = str(diagnostics.get('utc_time') or '').strip()
+    if not utc_date or not utc_time:
+        raise RuntimeError('GPS liefert aktuell keine UTC-Zeit')
+
+    combined = f'{utc_date} {utc_time}'
+    for pattern in ('%Y-%m-%d %H:%M:%S.%f', '%Y-%m-%d %H:%M:%S'):
+        try:
+            return datetime.datetime.strptime(combined, pattern)
+        except ValueError:
+            continue
+    raise RuntimeError(f'GPS-Zeitformat unbekannt: {combined}')
+
+
+def get_local_timezone():
+    try:
+        with open('/etc/timezone', 'r', encoding='utf-8') as handle:
+            timezone_name = handle.read().strip()
+        if timezone_name:
+            return ZoneInfo(timezone_name)
+    except (FileNotFoundError, OSError, ValueError):
+        pass
+    return datetime.datetime.now().astimezone().tzinfo or datetime.timezone.utc
+
+
+def set_system_time_from_gps():
+    gps_dt = parse_gps_datetime()
+    gps_utc = gps_dt.replace(tzinfo=datetime.timezone.utc)
+    local_time = gps_utc.astimezone(get_local_timezone())
+    time_text = local_time.strftime('%Y-%m-%d %H:%M:%S')
+    stdout, stderr, returncode = run_command(['timedatectl', 'set-time', time_text])
+    if returncode != 0:
+        raise RuntimeError(stderr or stdout or 'Systemzeit konnte nicht gesetzt werden')
+    return time_text
+
+
 def stop_exomy_container():
     stdout, _, returncode = run_command(['docker', 'stop', '-t', '2', EXOMY_CONTAINER])
     return returncode == 0, stdout
@@ -1420,6 +1490,10 @@ class Handler(http.server.BaseHTTPRequestHandler):
                 'handler': restart_gps_node,
                 'status': 'GPS-Node wird neu gestartet'
             },
+            '/api/set-time-from-gps': {
+                'handler': set_system_time_from_gps,
+                'status': 'Pi-Zeit wird aus GPS gesetzt'
+            },
             '/api/restart-camera': {
                 'handler': restart_camera_service,
                 'status': 'Kameradienst wird neu gestartet'