Refactor code structure for improved readability and maintainability

picopy/state.py

@@ -0,0 +1,73 @@
+"""PiCopy – Kopierstatus, Verlauf, add_log."""
+
+import json
+import threading
+from datetime import datetime
+from pathlib import Path
+
+from picopy.config import (
+    STATE_FILE, HISTORY_FILE, MAX_HISTORY,
+    _atomic_write, log
+)
+
+copy_state = {
+    'running': False, 'progress': 0,
+    'total': 0, 'done': 0, 'current': '',
+    'error': None, 'last_copy': None, 'logs': [],
+    'bytes_total': 0, 'bytes_done': 0,
+    'start_ts': None, 'eta_sec': None, 'speed_bps': 0,
+    'phase': 'idle',
+    'space_warning': False, 'space_needed': 0, 'space_free': 0,
+    'last_success_file': '',
+}
+copy_lock = threading.Lock()
+
+
+def load_state():
+    global copy_state
+    try:
+        if STATE_FILE.exists():
+            saved = json.loads(STATE_FILE.read_text(encoding='utf-8'))
+            saved['running'] = False
+            saved['current'] = ''
+            copy_state.update(saved)
+    except (json.JSONDecodeError, ValueError) as e:
+        log.warning(f'state.json korrupt ({e}), starte mit leerem Zustand')
+        try: STATE_FILE.rename(STATE_FILE.with_suffix('.corrupt'))
+        except Exception: pass
+    except Exception as e:
+        log.warning(f'state.json nicht lesbar: {e}')
+
+
+def save_state():
+    try:
+        with copy_lock:
+            data = dict(copy_state)
+        _atomic_write(STATE_FILE, json.dumps(data))
+    except Exception:
+        pass
+
+
+def load_history() -> list:
+    try:
+        if HISTORY_FILE.exists():
+            return json.loads(HISTORY_FILE.read_text(encoding='utf-8'))
+    except Exception:
+        pass
+    return []
+
+
+def append_history(entry: dict):
+    h = load_history()
+    h.insert(0, entry)
+    try:
+        _atomic_write(HISTORY_FILE, json.dumps(h[:MAX_HISTORY]))
+    except Exception as e:
+        log.warning(f'Verlauf speichern fehlgeschlagen: {e}')
+
+
+def add_log(msg):
+    log.info(msg)
+    with copy_lock:
+        copy_state['logs'].append({'t': datetime.now().strftime('%H:%M:%S'), 'm': msg})
+        copy_state['logs'] = copy_state['logs'][-200:]