RequestTypeController.java

package edu.ucsb.cs156.rec.controllers;

import com.fasterxml.jackson.core.JsonProcessingException;
import edu.ucsb.cs156.rec.entities.RequestType;
import edu.ucsb.cs156.rec.errors.EntityNotFoundException;
import edu.ucsb.cs156.rec.repositories.RequestTypeRepository;
import io.swagger.v3.oas.annotations.Operation;
import io.swagger.v3.oas.annotations.Parameter;
import io.swagger.v3.oas.annotations.tags.Tag;
import jakarta.validation.Valid;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

/** This is a REST controller for RequestType */
@Tag(name = "RequestType")
@RequestMapping("/api/requesttypes")
@RestController
@Slf4j
public class RequestTypeController extends ApiController {

  @Autowired RequestTypeRepository requestTypeRepository;

  /**
   * This method returns a list of all Request Types.
   *
   * @return a list of all Request Types.
   */
  @Operation(summary = "List all request types")
  @PreAuthorize("hasRole('ROLE_USER')")
  @GetMapping("/all")
  public Iterable<RequestType> allRequestTypes() {
    Iterable<RequestType> requestTypes = requestTypeRepository.findAll();
    return requestTypes;
  }

  /**
   * Get a single request type by id
   *
   * @param id the id of the request type
   * @return a RequestTYpe
   */
  @Operation(summary = "Get a single request type")
  @PreAuthorize("hasRole('ROLE_USER')")
  @GetMapping("")
  public RequestType getById(@Parameter(name = "id") @RequestParam Long id) {
    RequestType requestType =
        requestTypeRepository
            .findById(id)
            .orElseThrow(() -> new EntityNotFoundException(RequestType.class, id));

    return requestType;
  }

  /**
   * Create a new request type
   *
   * @param requestType the title of the request type
   * @return the saved requesttype
   */
  @Operation(summary = "Create a new request type")
  @PreAuthorize("hasAnyRole('ROLE_ADMIN', 'ROLE_PROFESSOR')")
  @PostMapping("/post")
  public RequestType postRequestType(
      @Parameter(name = "requestType") @RequestParam String requestType)
      throws JsonProcessingException {

    log.info("requestType={}", requestType);

    // Check for duplicates
    Iterable<RequestType> existingRequestTypes = requestTypeRepository.findAll();
    for (RequestType existing : existingRequestTypes) {
      if (existing.getRequestType().equals(requestType)) {
        throw new IllegalArgumentException("Duplicate request type: " + requestType);
      }
    }

    // Create new request type
    RequestType requestTypeNew = new RequestType();
    requestTypeNew.setRequestType(requestType);

    RequestType savedRequestType = requestTypeRepository.save(requestTypeNew);

    return savedRequestType;
  }

  /**
   * Delete a UCSBDate
   *
   * @param id the id of the request type to delete
   * @return a message indicating the date was deleted
   */
  @Operation(summary = "Delete a request type")
  @PreAuthorize("hasAnyRole('ROLE_ADMIN', 'ROLE_PROFESSOR')")
  @DeleteMapping("")
  public Object deleteRequestType(@Parameter(name = "id") @RequestParam Long id) {
    RequestType requestType =
        requestTypeRepository
            .findById(id)
            .orElseThrow(() -> new EntityNotFoundException(RequestType.class, id));

    requestTypeRepository.delete(requestType);
    return genericMessage("Request type with id %s deleted".formatted(id));
  }

  /**
   * Update a single request type
   *
   * @param id id of the request to update
   * @param incoming the new request type
   * @return the updated request type object
   */
  @Operation(summary = "Update a single request type")
  @PreAuthorize("hasAnyRole('ROLE_ADMIN', 'ROLE_PROFESSOR')")
  @PutMapping("")
  public RequestType updateRequestType(
      @Parameter(name = "id") @RequestParam Long id, @RequestBody @Valid RequestType incoming) {

    RequestType requestType =
        requestTypeRepository
            .findById(id)
            .orElseThrow(() -> new EntityNotFoundException(RequestType.class, id));

    // Check for duplicates
    Iterable<RequestType> existingRequestTypes = requestTypeRepository.findAll();
    for (RequestType existing : existingRequestTypes) {
      if (incoming.getRequestType().isEmpty()) {
        throw new IllegalArgumentException("Request type cannot be empty");
      }
      if (existing.getId() == id) {
        continue;
      }
      if (existing.getRequestType().equals(incoming.getRequestType())) {
        throw new IllegalArgumentException("Duplicate request type: " + incoming);
      }
    }

    // Update and save the request type
    requestType.setRequestType(incoming.getRequestType());
    requestTypeRepository.save(requestType);

    return requestType;
  }
}