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MedicusWithClaudeSelects/db_bridge_windows.py

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+"""db_bridge_windows.py – Windows watchdog pro dotazy z Linux VM.
+
+Spusť jednou na Windows:
+    python db_bridge_windows.py
+
+Skript sleduje soubor query_request.json ve stejné složce.
+Jakmile ho najde, spustí SQL dotaz proti Medicusu a zapíše výsledek
+do query_response.json. Pak čeká na další dotaz.
+
+Ukonči: Ctrl+C
+"""
+import fdb, json, time, os, traceback, datetime
+
+# ── Konfigurace ───────────────────────────────────────────────────────────────
+DSN      = r'localhost:c:\medicus 3\data\medicus.fdb'
+USER     = 'SYSDBA'
+PASSWORD = 'masterkey'
+CHARSET  = 'win1250'
+
+BRIDGE_DIR = os.path.dirname(os.path.abspath(__file__))
+REQUEST    = os.path.join(BRIDGE_DIR, 'query_request.json')
+RESPONSE   = os.path.join(BRIDGE_DIR, 'query_response.json')
+POLL_SEC   = 0.5
+
+# ── Pomocné funkce ────────────────────────────────────────────────────────────
+
+def serialize(val):
+    """Převede Python hodnoty na JSON-serializovatelné typy."""
+    if isinstance(val, (datetime.date, datetime.datetime)):
+        return val.isoformat()
+    if isinstance(val, datetime.time):
+        return val.isoformat()
+    if isinstance(val, bytes):
+        return f'<bytes len={len(val)}>'
+    return val
+
+
+def run_query(sql, params=None):
+    conn = fdb.connect(dsn=DSN, user=USER, password=PASSWORD, charset=CHARSET)
+    try:
+        cur = conn.cursor()
+        cur.execute(sql, params or [])
+        columns = [d[0] for d in cur.description] if cur.description else []
+        rows    = [[serialize(v) for v in row] for row in cur.fetchall()]
+        return {'status': 'ok', 'columns': columns, 'rows': rows, 'error': None}
+    except Exception as e:
+        return {'status': 'error', 'columns': [], 'rows': [], 'error': str(e)}
+    finally:
+        conn.close()
+
+
+# ── Hlavní smyčka ─────────────────────────────────────────────────────────────
+print(f'DB Bridge spuštěn. Sleduju: {REQUEST}')
+print('Ukončení: Ctrl+C\n')
+
+while True:
+    try:
+        if os.path.exists(REQUEST):
+            print(f'[{datetime.datetime.now().strftime("%H:%M:%S")}] Přijat dotaz...')
+
+            with open(REQUEST, 'r', encoding='utf-8') as f:
+                req = json.load(f)
+
+            os.remove(REQUEST)
+
+            sql    = req.get('sql', '')
+            params = req.get('params', [])
+            req_id = req.get('id', '')
+
+            result         = run_query(sql, params)
+            result['id']   = req_id
+            result['sql']  = sql
+
+            with open(RESPONSE, 'w', encoding='utf-8') as f:
+                json.dump(result, f, ensure_ascii=False, indent=2)
+
+            if result['status'] == 'ok':
+                print(f'    → OK, {len(result["rows"])} řádků')
+            else:
+                print(f'    → CHYBA: {result["error"]}')
+
+        time.sleep(POLL_SEC)
+
+    except KeyboardInterrupt:
+        print('\nDB Bridge ukončen.')
+        break
+    except Exception as e:
+        print(f'Neočekávaná chyba: {e}')
+        traceback.print_exc()
+        time.sleep(2)