demo showcase

api/database.py

@@ -2,21 +2,36 @@
 # Licensed under the MIT License. See LICENSE file in project root for details.
 
 import os
-import mysql.connector
+import sqlite3
 
-DB_HOST = os.environ.get("DB_HOST", "mariadb.fritz.box")
-DB_PORT = int(os.environ.get("DB_PORT", "3306"))
-DB_NAME = os.environ.get("DB_NAME", "calendar_sync")
-DB_USER = os.environ["DB_USER"]
-DB_PASSWORD = os.environ["DB_PASSWORD"]
+DB_BACKEND = os.environ.get("DB_BACKEND", "mysql")
 
+if DB_BACKEND == "sqlite":
+    DB_PATH = os.environ.get("DB_PATH", "demo.db")
 
-def get_connection(autocommit: bool = True):
-    return mysql.connector.connect(
-        host=DB_HOST,
-        port=DB_PORT,
-        user=DB_USER,
-        password=DB_PASSWORD,
-        database=DB_NAME,
-        autocommit=autocommit,
-    )
+    def get_connection(autocommit: bool = True):
+        conn = sqlite3.connect(DB_PATH)
+        conn.execute("PRAGMA journal_mode=WAL")
+        conn.execute("PRAGMA foreign_keys=ON")
+        conn.row_factory = sqlite3.Row
+        if autocommit:
+            conn.isolation_level = None
+        return conn
+else:
+    import mysql.connector
+
+    DB_HOST = os.environ.get("DB_HOST", "mariadb.fritz.box")
+    DB_PORT = int(os.environ.get("DB_PORT", "3306"))
+    DB_NAME = os.environ.get("DB_NAME", "calendar_sync")
+    DB_USER = os.environ["DB_USER"]
+    DB_PASSWORD = os.environ["DB_PASSWORD"]
+
+    def get_connection(autocommit: bool = True):
+        return mysql.connector.connect(
+            host=DB_HOST,
+            port=DB_PORT,
+            user=DB_USER,
+            password=DB_PASSWORD,
+            database=DB_NAME,
+            autocommit=autocommit,
+        )

api/main.py

@@ -12,10 +12,13 @@ from fastapi.responses import HTMLResponse
 from fastapi.templating import Jinja2Templates
 from pydantic import BaseModel
 
-from api.database import get_connection
+from api.database import get_connection, DB_BACKEND
 
 log = logging.getLogger("calendar-api")
 
+PH = "?" if DB_BACKEND == "sqlite" else "%s"
+NOW_SQL = "datetime('now')" if DB_BACKEND == "sqlite" else "NOW()"
+
 app = FastAPI(title="Calendar Sync API")
 
 templates = Jinja2Templates(directory=Path(__file__).parent / "templates")
@@ -35,6 +38,8 @@ def to_local_timezone(dt: datetime) -> datetime:
     """Konvertiere naive UTC datetime zu Benutzer-Zeitzone."""
     if dt is None:
         return None
+    if isinstance(dt, str):
+        dt = datetime.fromisoformat(dt)
     return dt.replace(tzinfo=timezone.utc).astimezone(TIMEZONE)
 
 
@@ -84,19 +89,19 @@ def fetch_events(limit: int = 10, search: str | None = None, calendar_label: str
     try:
         cur = conn.cursor()
         try:
-            conditions = ["deleted = 0", "start_at >= NOW()"]
+            conditions = [f"deleted = 0", f"start_at >= {NOW_SQL}"]
             params: list = []
             if search:
-                conditions.append("summary LIKE %s")
+                conditions.append(f"summary LIKE {PH}")
                 params.append(f"%{search}%")
             if calendar_label:
-                conditions.append("calendar_label = %s")
+                conditions.append(f"calendar_label = {PH}")
                 params.append(calendar_label)
             params.append(limit)
             where = " WHERE " + " AND ".join(conditions)
             cur.execute(
                 f"SELECT {SELECT_COLUMNS} FROM calendar_events "
-                f"{where} ORDER BY start_at ASC LIMIT %s",
+                f"{where} ORDER BY start_at ASC LIMIT {PH}",
                 tuple(params),
             )
             return cur.fetchall()
@@ -141,7 +146,7 @@ def get_event(event_id: int):
         try:
             cur.execute(
                 f"SELECT {SELECT_COLUMNS} FROM calendar_events "
-                "WHERE id = %s AND deleted = 0",
+                f"WHERE id = {PH} AND deleted = 0",
                 (event_id,),
             )
             row = cur.fetchone()
@@ -186,6 +191,7 @@ def index(
         })
 
     return templates.TemplateResponse(
+        request,
         "index.html",
-        {"request": request, "events": events, "search": search or ""},
+        {"events": events, "search": search or ""},
     )