EventController.java

package com.example.athena.tickit.controller;

import com.example.athena.tickit.model.saas.Event;
import com.example.athena.tickit.service.EventService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

import java.util.List;

@RestController
@RequestMapping(value = "/events")
public class EventController {

    private final EventService service;

    @Autowired
    public EventController(EventService service) {
        this.service = service;
    }

    @RequestMapping(method = RequestMethod.GET)
    public ResponseEntity<List<Event>> findAll(
            @RequestParam(required = false) Integer limit,
            @RequestParam(required = false) Integer offset
    ) {

        List<Event> events = service.findAll(limit, offset);
        if (events.size() == 0) {
            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(null);
        }
        return ResponseEntity.status(HttpStatus.OK).body(events);
    }

    @RequestMapping(value = "/{id}", method = RequestMethod.GET)
    public ResponseEntity<Event> findById(@PathVariable("id") int id) {

        Event event = service.findById(id);
        if (event == null) {
            return ResponseEntity.status(HttpStatus.NOT_FOUND).body(null);
        }
        return ResponseEntity.status(HttpStatus.OK).body(event);
    }

}