Update app.py

app.py

@@ -746,6 +746,12 @@ class NutrientCalculator:
         self.target_profile['N (NO3-)'] = TOTAL_NITROGEN * (NO3_RATIO / total_parts)
         self.target_profile['N (NH4+)'] = TOTAL_NITROGEN * (NH4_RATIO / total_parts)
 
+        # Сохраняем исходный профиль азота
+        self.initial_n_profile = {
+            "NO3-": self.target_profile['N (NO3-)'],
+            "NH4+": self.target_profile['N (NH4+)']
+        }
+
     def calculate(self):
         try:
             self.actual_profile = {k: 0.0 for k in self.target_profile}
@@ -875,6 +881,26 @@ class NutrientCalculator:
         for elem in self.fertilizers[fert_name]:
             self.results[fert_name][f'внесет {elem}'] = 0.0
 
+    def generate_report(self):
+        """Генерация отчета о питательном растворе"""
+        try:
+            report = "============================================================\n"
+            report += "ПРОФИЛЬ ПИТАТЕЛЬНОГО РАСТВОРА (ИТОГО):\n"
+            report += "============================================================\n"
+            report += f"{'Элемент':<10} {'ppm':>10}\n"
+            report += "-" * 20 + "\n"
+            for element, value in self.actual_profile.items():
+                report += f"{element:<10} {value:>10.2f}\n"
+
+            report += "\nИсходный расчёт азота:\n"
+            report += f"  NO3-: {self.initial_n_profile['NO3-']:.2f} ppm\n"
+            report += f"  NH4+: {self.initial_n_profile['NH4+']:.2f} ppm\n"
+
+            return report
+        except Exception as e:
+            print(f"Ошибка при выводе отчёта: {str(e)}")
+            raise
+
     def calculate_ec(self):
         return round(self.total_ec, 2)