UsersController.java

package edu.ucsb.cs156.courses.controllers;

import com.fasterxml.jackson.core.JsonProcessingException;

import com.fasterxml.jackson.databind.ObjectMapper;

import edu.ucsb.cs156.courses.entities.User;

import edu.ucsb.cs156.courses.repositories.UserRepository;

import io.swagger.v3.oas.annotations.Operation;

import io.swagger.v3.oas.annotations.Parameter;

import io.swagger.v3.oas.annotations.tags.Tag;

import java.util.Arrays;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.data.domain.PageRequest;

import org.springframework.data.domain.Sort.Direction;

import org.springframework.http.ResponseEntity;

import org.springframework.security.access.prepost.PreAuthorize;

import org.springframework.web.bind.annotation.GetMapping;

import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RequestParam;

import org.springframework.web.bind.annotation.RestController;

@Tag(name = "User information (admin only)")

@RequestMapping("/api/admin/users")

@RestController

  @Autowired UserRepository userRepository;

  @Autowired ObjectMapper mapper;

  @Operation(summary = "Get a list of all users")

  @PreAuthorize("hasRole('ROLE_ADMIN')")

  @GetMapping("")

  public ResponseEntity<String> users() throws JsonProcessingException {

  }

  @Operation(summary = "Get a list of all users with pages")

  @PreAuthorize("hasRole('ROLE_ADMIN')")

  @GetMapping(params = {"page", "pageSize", "sortDirection"})

  public Iterable<User> usersPaged(

      @Parameter(

              name = "page",

              description = "what page of the data",

              example = "0",

              required = true)

          @RequestParam

          int page,

      @Parameter(

              name = "pageSize",

              description = "size of each page",

              example = "5",

              required = true)

          @RequestParam

          int pageSize,

      @Parameter(

              name = "sortDirection",

              description = "sort direction",

              example = "ASC",

              required = true)

          @RequestParam

          String sortDirection)

      throws JsonProcessingException {

              "%s is not a valid sort direction.  Valid values are %s",

              sortDirection, allowedSortDirections));

    }

    }

  }

}

Mutations