dtz_calling/StudentController.java

package com.example.classroomattendance.controller;

import com.example.classroomattendance.model.Student;
import com.example.classroomattendance.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.*;

@Controller
public class StudentController {

    @Autowired
    private StudentService studentService;

    @PostMapping("/pick")
    public String pickRandomStudent(Model model) {
        Student pickedStudent = studentService.pickRandomStudent();
        model.addAttribute("pickedStudent", pickedStudent);
        model.addAttribute("students", studentService.getAllStudents());
        return "index";
    }

    @PostMapping("/updatePoints")
    public String updateStudentPoints(@RequestParam Long studentId, @RequestParam double points, Model model) {
        studentService.updateStudentPoints(studentId, points);
        model.addAttribute("pickedStudent", studentService.pickRandomStudent());
        model.addAttribute("students", studentService.getAllStudents());
        return "index";
    }

    @GetMapping("/")
    public String listStudents(Model model) {
        model.addAttribute("students", studentService.getAllStudents());
        return "index";
    }
}