Merge remote-tracking branch 'origin/main' into aadi

lib/calorie_calc.dart

@@ -0,0 +1,184 @@
+import 'package:flutter/material.dart';
+
+void main() {
+  runApp(CalorieCalculatorApp());
+}
+
+class CalorieCalculatorApp extends StatelessWidget {
+  @override
+  Widget build(BuildContext context) {
+    return MaterialApp(
+      title: 'Calorie and Protein Calculator',
+      theme: ThemeData(
+        primarySwatch: Colors.blue,
+      ),
+      home: CalorieCalculatorScreen(),
+    );
+  }
+}
+
+class CalorieCalculatorScreen extends StatefulWidget {
+  @override
+  _CalorieCalculatorScreenState createState() => _CalorieCalculatorScreenState();
+}
+
+class _CalorieCalculatorScreenState extends State<CalorieCalculatorScreen> {
+  final TextEditingController heightController = TextEditingController();
+  final TextEditingController weightController = TextEditingController();
+  final TextEditingController ageController = TextEditingController();
+  String selectedGender = 'Male';
+  String selectedGoal = 'Lose weight';
+  String selectedDietaryPreference = 'Normal';
+
+  double calories = 0;
+  double protein = 0;
+
+  final List<String> goals = ['Lose weight', 'Gain weight', 'Maintain'];
+  final List<String> dietaryPreferences = ['Normal', 'Vegetarian', 'Vegan'];
+  final List<String> genders = ['Male', 'Female'];
+
+  void calculateRequirements() {
+    double height = double.tryParse(heightController.text) ?? 0;
+    double weight = double.tryParse(weightController.text) ?? 0;
+    int age = int.tryParse(ageController.text) ?? 0;
+
+    if (height == 0 || weight == 0 || age == 0) {
+      return; // Invalid input
+    }
+
+    // BMR Calculation (using Harris-Benedict formula)
+    if (selectedGender == 'Male') {
+      calories = 88.362 + (15 * weight) + (5 * height) - (5.677 * age);
+    } else {
+      calories = 447.593 + (12 * weight) + (3.5 * height) - (4.330 * age);
+    }
+
+    // Adjust calorie requirement based on the goal
+    if (selectedGoal == 'Lose weight') {
+      calories -= 500; // Calorie deficit for weight loss
+    } else if (selectedGoal == 'Gain weight') {
+      calories += 500; // Calorie surplus for weight gain
+    }
+
+    // Protein requirement calculation (example)
+    if (selectedGoal == 'Lose weight') {
+      protein = weight * 1.8; // Higher protein intake during weight loss
+    } else if (selectedGoal == 'Gain weight') {
+      protein = weight * 1.6; // Moderate protein intake during weight gain
+    } else {
+      protein = weight * 1.2; // Maintenance protein intake
+    }
+
+    // Adjust protein and calories based on dietary preference
+    if (selectedDietaryPreference == 'Vegetarian') {
+      protein *= 0.9; // Assume slightly lower protein intake for vegetarians
+    } else if (selectedDietaryPreference == 'Vegan') {
+      protein *= 0.85; // Assume lower protein intake for vegans
+    }
+
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text('Calorie and Protein Calculator'),
+      ),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            TextField(
+              controller: heightController,
+              keyboardType: TextInputType.number,
+              decoration: InputDecoration(
+                labelText: 'Height (cm)',
+              ),
+            ),
+            TextField(
+              controller: weightController,
+              keyboardType: TextInputType.number,
+              decoration: InputDecoration(
+                labelText: 'Weight (kg)',
+              ),
+            ),
+            TextField(
+              controller: ageController,
+              keyboardType: TextInputType.number,
+              decoration: InputDecoration(
+                labelText: 'Age',
+              ),
+            ),
+            SizedBox(height: 20),
+            DropdownButton<String>(
+              value: selectedGender,
+              onChanged: (String? newValue) {
+                setState(() {
+                  selectedGender = newValue!;
+                });
+              },
+              items: genders.map((String gender) {
+                return DropdownMenuItem<String>(
+                  value: gender,
+                  child: Text(gender),
+                );
+              }).toList(),
+              isExpanded: true,
+              hint: Text("Select Gender"),
+            ),
+            SizedBox(height: 20),
+            DropdownButton<String>(
+              value: selectedGoal,
+              onChanged: (String? newValue) {
+                setState(() {
+                  selectedGoal = newValue!;
+                });
+              },
+              items: goals.map((String goal) {
+                return DropdownMenuItem<String>(
+                  value: goal,
+                  child: Text(goal),
+                );
+              }).toList(),
+              isExpanded: true,
+              hint: Text("Select Goal"),
+            ),
+            SizedBox(height: 20),
+            DropdownButton<String>(
+              value: selectedDietaryPreference,
+              onChanged: (String? newValue) {
+                setState(() {
+                  selectedDietaryPreference = newValue!;
+                });
+              },
+              items: dietaryPreferences.map((String preference) {
+                return DropdownMenuItem<String>(
+                  value: preference,
+                  child: Text(preference),
+                );
+              }).toList(),
+              isExpanded: true,
+              hint: Text("Select Dietary Preference"),
+            ),
+            SizedBox(height: 20),
+            ElevatedButton(
+              onPressed: calculateRequirements,
+              child: Text('Calculate'),
+            ),
+            SizedBox(height: 20),
+            if (calories > 0 && protein > 0)
+              Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text('Calorie Requirement: ${calories.toStringAsFixed(0)} kcal'),
+                  Text('Protein Requirement: ${protein.toStringAsFixed(1)} grams'),
+                ],
+              ),
+          ],
+        ),
+      ),
+    );
+  }
+}