WebApp Design modern

app.py

@@ -5,19 +5,98 @@ import sys
 import json
 from pathlib import Path
 from flask import redirect
+from datetime import datetime
 
 app = Flask(__name__)
 
 BASE_DIR = Path(__file__).parent
 CATEGORIES_FILE = BASE_DIR / "Kategorien.json"
 
+def get_current_week_data():
 
+    year, week, _ = datetime.now().isocalendar()
+
+    summary_file = (
+        BASE_DIR
+        / "Transaktionen"
+        / str(year)
+        / "summary"
+        / f"category_summary_{year}_KW{week:02d}.json"
+    )
+
+    transactions_file = (
+        BASE_DIR
+        / "Transaktionen"
+        / str(year)
+        / "categorized_json"
+        / f"categorized_transactions_{year}_KW{week:02d}.json"
+    )
+
+    summary = None
+    transactions = []
+
+    total_income = 0
+    total_expenses = 0
+    total_saldo = 0
+
+    if summary_file.exists():
+
+        with open(
+            summary_file,
+            encoding="utf-8"
+        ) as f:
+
+            summary = json.load(f)
+
+        for values in summary.values():
+
+            total_income += values["income"]
+            total_expenses += values["expenses"]
+            total_saldo += values["saldo"]
+
+    if transactions_file.exists():
+
+        with open(
+            transactions_file,
+            encoding="utf-8"
+        ) as f:
+
+            transactions = json.load(f)
+
+    return (
+        year,
+        week,
+        summary,
+        transactions,
+        total_income,
+        total_expenses,
+        total_saldo
+    )
 
+@app.route("/")
 @app.route("/")
 def index():
-    return render_template("index.html")
 
+    (
+        year,
+        week,
+        summary,
+        transactions,
+        total_income,
+        total_expenses,
+        total_saldo
+    ) = get_current_week_data()
 
+    return render_template(
+        "index.html",
+        year=year,
+        week=week,
+        summary=summary,
+        transactions=transactions[:10],
+        total_income=total_income,
+        total_expenses=total_expenses,
+        total_saldo=total_saldo
+    )
 @app.route("/run/balance", methods=["POST"])
 def run_balance():