UCSBSubjectsService.java
- package edu.ucsb.cs156.courses.services;
- import com.fasterxml.jackson.core.JsonProcessingException;
- import com.fasterxml.jackson.core.type.TypeReference;
- import com.fasterxml.jackson.databind.ObjectMapper;
- import edu.ucsb.cs156.courses.entities.UCSBSubject;
- import edu.ucsb.cs156.courses.repositories.UCSBSubjectRepository;
- import java.util.ArrayList;
- import java.util.List;
- import lombok.extern.slf4j.Slf4j;
- import org.springframework.beans.factory.annotation.Autowired;
- import org.springframework.beans.factory.annotation.Value;
- import org.springframework.boot.web.client.RestTemplateBuilder;
- import org.springframework.http.HttpEntity;
- import org.springframework.http.HttpHeaders;
- import org.springframework.http.HttpMethod;
- import org.springframework.http.MediaType;
- import org.springframework.http.ResponseEntity;
- import org.springframework.stereotype.Service;
- import org.springframework.web.client.RestTemplate;
- @Slf4j
- @Service("UCSBSubjects")
- public class UCSBSubjectsService {
- @Autowired private ObjectMapper mapper;
- @Autowired private UCSBSubjectRepository subjectRepository;
- @Value("${app.ucsb.api.consumer_key}")
- private String apiKey;
- public static final String ENDPOINT =
- "https://api.ucsb.edu/students/lookups/v1/subjects?includeInactive=false";
- private final RestTemplate restTemplate;
- public UCSBSubjectsService(RestTemplateBuilder restTemplateBuilder) {
- restTemplate = restTemplateBuilder.build();
- }
- public List<UCSBSubject> get() throws JsonProcessingException {
- HttpHeaders headers = new HttpHeaders();
- headers.setAccept(List.of(MediaType.APPLICATION_JSON));
- headers.setContentType(MediaType.APPLICATION_JSON);
- headers.set("ucsb-api-key", this.apiKey);
- HttpEntity<String> entity = new HttpEntity<>(headers);
- ResponseEntity<String> re =
- restTemplate.exchange(ENDPOINT, HttpMethod.GET, entity, String.class);
- String retBody = re.getBody();
- List<UCSBSubject> subjects =
- mapper.readValue(retBody, new TypeReference<List<UCSBSubject>>() {});
- return subjects;
- }
- public List<UCSBSubject> loadAllSubjects() throws JsonProcessingException {
- List<UCSBSubject> subjects = this.get();
- List<UCSBSubject> savedSubjects = new ArrayList<UCSBSubject>();
- subjects.forEach(
- (ucsbSubject) -> {
- subjectRepository.save(ucsbSubject);
- savedSubjects.add(ucsbSubject);
- });
- log.info("subjects={}", subjects);
- return savedSubjects;
- }
- }