| 1 | package edu.ucsb.cs156.courses.services; | |
| 2 | ||
| 3 | import com.fasterxml.jackson.databind.ObjectMapper; | |
| 4 | import com.opencsv.CSVReader; | |
| 5 | import edu.ucsb.cs156.courses.entities.GradeHistory; | |
| 6 | import edu.ucsb.cs156.courses.models.ApiResult; | |
| 7 | import edu.ucsb.cs156.courses.models.Quarter; | |
| 8 | import edu.ucsb.cs156.courses.models.TreeElement; | |
| 9 | import java.io.Reader; | |
| 10 | import java.io.StringReader; | |
| 11 | import java.util.ArrayList; | |
| 12 | import java.util.List; | |
| 13 | import java.util.Map; | |
| 14 | import java.util.stream.Collectors; | |
| 15 | import lombok.extern.slf4j.Slf4j; | |
| 16 | import org.springframework.beans.factory.annotation.Autowired; | |
| 17 | import org.springframework.boot.web.client.RestTemplateBuilder; | |
| 18 | import org.springframework.http.HttpEntity; | |
| 19 | import org.springframework.http.HttpHeaders; | |
| 20 | import org.springframework.http.HttpMethod; | |
| 21 | import org.springframework.http.MediaType; | |
| 22 | import org.springframework.http.ResponseEntity; | |
| 23 | import org.springframework.stereotype.Service; | |
| 24 | import org.springframework.web.client.RestTemplate; | |
| 25 | ||
| 26 | @Service("UCSBGradeHistoryService") | |
| 27 | @Slf4j | |
| 28 | public class UCSBGradeHistoryServiceImpl implements UCSBGradeHistoryService { | |
| 29 | ||
| 30 |   private final RestTemplate restTemplate; | |
| 31 | ||
| 32 |   public UCSBGradeHistoryServiceImpl(RestTemplateBuilder restTemplateBuilder) { | |
| 33 |     restTemplate = restTemplateBuilder.build(); | |
| 34 |   } | |
| 35 | ||
| 36 |   @Autowired ObjectMapper mapper; | |
| 37 | ||
| 38 |   public static final String REPO_OWNER_AND_NAME = "ucsb-cs156/UCSB_Grades"; | |
| 39 |   public static final String API_ENDPOINT = | |
| 40 |       "https://api.github.com/repos/" + REPO_OWNER_AND_NAME + "/git/trees/main?recursive=1"; | |
| 41 | ||
| 42 |   @Override | |
| 43 |   public List<String> getUrls() throws Exception { | |
| 44 | ||
| 45 |     log.info("getting data from {}", API_ENDPOINT); | |
| 46 | ||
| 47 |     HttpHeaders headers = new HttpHeaders(); | |
| 48 | 
1
1. getUrls : removed call to org/springframework/http/HttpHeaders::setAccept → KILLED | 
    headers.setAccept(List.of(MediaType.APPLICATION_JSON)); | 
| 49 | 
1
1. getUrls : removed call to org/springframework/http/HttpHeaders::setContentType → KILLED | 
    headers.setContentType(MediaType.APPLICATION_JSON); | 
| 50 | ||
| 51 |     HttpEntity<String> entity = new HttpEntity<>(headers); | |
| 52 |     Map<String, String> uriVariables = Map.of("recursive", "1"); | |
| 53 | ||
| 54 |     ResponseEntity<String> re = | |
| 55 |         restTemplate.exchange(API_ENDPOINT, HttpMethod.GET, entity, String.class, uriVariables); | |
| 56 | ||
| 57 |     ApiResult apiResult = mapper.readValue(re.getBody(), ApiResult.class); | |
| 58 | ||
| 59 |     List<TreeElement> treeElements = apiResult.getTree(); | |
| 60 |     List<String> urls = | |
| 61 |         treeElements.stream() | |
| 62 | 
1
1. lambda$getUrls$0 : replaced return value with "" for edu/ucsb/cs156/courses/services/UCSBGradeHistoryServiceImpl::lambda$getUrls$0 → KILLED | 
            .map(treeElement -> treeElement.getPath()) | 
| 63 | 
3
1. lambda$getUrls$1 : negated conditional → KILLED 2. lambda$getUrls$1 : negated conditional → KILLED 3. lambda$getUrls$1 : replaced boolean return with true for edu/ucsb/cs156/courses/services/UCSBGradeHistoryServiceImpl::lambda$getUrls$1 → KILLED  | 
            .filter(path -> (path.startsWith("quarters/") && path.endsWith(".csv"))) | 
| 64 |             .collect(Collectors.toList()); | |
| 65 |     List<String> rawUrls = | |
| 66 |         urls.stream() | |
| 67 | 
1
1. lambda$getUrls$2 : replaced return value with "" for edu/ucsb/cs156/courses/services/UCSBGradeHistoryServiceImpl::lambda$getUrls$2 → KILLED | 
            .map(url -> "https://raw.githubusercontent.com/" + REPO_OWNER_AND_NAME + "/main/" + url) | 
| 68 |             .collect(Collectors.toList()); | |
| 69 | 
1
1. getUrls : replaced return value with Collections.emptyList for edu/ucsb/cs156/courses/services/UCSBGradeHistoryServiceImpl::getUrls → KILLED | 
    return rawUrls; | 
| 70 |   } | |
| 71 | ||
| 72 |   @Override | |
| 73 |   public List<GradeHistory> getGradeData(String url) throws Exception { | |
| 74 |     log.info("getting data from {}", url); | |
| 75 |     HttpHeaders headers = new HttpHeaders(); | |
| 76 | 
1
1. getGradeData : removed call to org/springframework/http/HttpHeaders::setAccept → KILLED | 
    headers.setAccept(List.of(MediaType.APPLICATION_JSON)); | 
| 77 | 
1
1. getGradeData : removed call to org/springframework/http/HttpHeaders::setContentType → KILLED | 
    headers.setContentType(MediaType.APPLICATION_JSON); | 
| 78 | ||
| 79 |     HttpEntity<String> entity = new HttpEntity<>(headers); | |
| 80 |     ResponseEntity<String> re = restTemplate.exchange(url, HttpMethod.GET, entity, String.class); | |
| 81 |     String csvData = re.getBody(); | |
| 82 | 
1
1. getGradeData : replaced return value with Collections.emptyList for edu/ucsb/cs156/courses/services/UCSBGradeHistoryServiceImpl::getGradeData → KILLED | 
    return parse(new StringReader(csvData)); | 
| 83 |   } | |
| 84 | ||
| 85 |   @Override | |
| 86 |   public List<GradeHistory> parse(Reader reader) throws Exception { | |
| 87 |     List<GradeHistory> gradeHistoryList = new ArrayList<GradeHistory>(); | |
| 88 |     log.info("Parsing CSV file with grade history... "); | |
| 89 |     CSVReader csvReader = new CSVReader(reader); | |
| 90 |     csvReader.skip(1); | |
| 91 |     List<String[]> myEntries = csvReader.readAll(); | |
| 92 |     for (String[] row : myEntries) { | |
| 93 |       String yyyyq = Integer.toString(Quarter.qyyToyyyyQ(row[0])); | |
| 94 |       GradeHistory gradeHistory = | |
| 95 |           GradeHistory.builder() | |
| 96 |               .yyyyq(yyyyq) | |
| 97 |               .course(row[2]) | |
| 98 |               .instructor(row[3]) | |
| 99 |               .grade(row[4]) | |
| 100 |               .count(Integer.parseInt(row[5])) | |
| 101 |               .build(); | |
| 102 |       log.info("Parsed: " + gradeHistory.toString()); | |
| 103 |       gradeHistoryList.add(gradeHistory); | |
| 104 |     } | |
| 105 |     csvReader.close(); | |
| 106 | 
1
1. parse : replaced return value with Collections.emptyList for edu/ucsb/cs156/courses/services/UCSBGradeHistoryServiceImpl::parse → KILLED | 
    return gradeHistoryList; | 
| 107 |   } | |
| 108 | } | |
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