firebase add department

import 'package:cloud_firestore/cloud_firestore.dart';
import 'package:firebase_core/firebase_core.dart';
import 'package:flutter/material.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  await Firebase.initializeApp();
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Firebase Create Department Collection',
      home: CreateDepartmentsPage(),
    );
  }
}

class CreateDepartmentsPage extends StatelessWidget {
  // List of department names to be added as document IDs
  final List<String> collectionsToDelete = [
    'Biology',
    'Chemistry',
    'Computer Science and Engineering',
    'Electrical and Electronic Engineering',
    'Mathematics',
    'Physics',
  ];

  // Method to create a department collection with documents
  Future<void> createDepartments() async {
    try {
      // Reference to the 'departments' collection
      CollectionReference departments = FirebaseFirestore.instance.collection('departments');

      for (var department in collectionsToDelete) {
        // Add a document with the department name as the document ID
        await departments.doc(department).set({
          'name': department,
          'createdAt': Timestamp.now(),
        });
        print('Department $department added with document ID: $department');
      }
    } catch (e) {
      print('Error creating departments: $e');
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('Create Department Collection'),
      ),
      body: Center(
        child: Text('Press the button to create the department collection'),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: () async {
          await createDepartments();
          ScaffoldMessenger.of(context).showSnackBar(
            SnackBar(content: Text('Departments collection created!')),
          );
        },
        child: Icon(Icons.add),
        tooltip: 'Create Departments',
      ),
    );
  }
}