import openpyxl
import sys

def read_excel(filename):
    print(f"=== Datei: {filename} ===\n")
    wb = openpyxl.load_workbook(filename)
    print(f"Sheets: {wb.sheetnames}\n")
    
    for sheet_name in wb.sheetnames:
        ws = wb[sheet_name]
        print(f"\n--- Sheet: {sheet_name} ---")
        print(f"Zeilen: {ws.max_row}, Spalten: {ws.max_column}")
        print("\nErste 15 Zeilen:")
        for i, row in enumerate(ws.iter_rows(values_only=True), 1):
            if i > 15:
                break
            print(f"Zeile {i}: {row}")
        print("-" * 50)

if __name__ == "__main__":
    if len(sys.argv) > 1:
        read_excel(sys.argv[1])
    else:
        # Beide Dateien lesen
        read_excel("Schulden Niki.xlsx")
        print("\n" + "="*60 + "\n")
        read_excel("Kopie von Kostenrechnung der Nächsten jahre (3).xlsx")