Team 9

src/main/java/ac/cnu/realcoding/controller/UrlShortenerController.java

@@ -24,10 +24,27 @@ public UrlShortenerController(UrlShortenerService urlShortenerService) {
  this.urlShortenerService = urlShortenerService;
  }
 
- @GetMapping("health")
- public Mono<String> healthCheck() {
+ @GetMapping("health/{n}") //{} 변수로 처리하겠다.
+ public Mono<String> healthCheck(@PathVariable int n) {
  // For basic tutorial
- return Mono.just("Hello World");
+ return fib(n).map(element -> {
+ return String.valueOf(element);
+ });
+ }
+
+ private Mono<Integer> fib(int n) {
+ if(n==0) {
+ return Mono.just(0);
+ }
+ if(n==1 || n==2) {
+ return Mono.just(1);
+ }
+
+ Mono<Integer> f0 = fib(n-1);
+ Mono<Integer> f1 = fib(n-2);
+ return Mono.zip(f0, f1, (n0, n1) -> {
+ return n0+n1;
+ });
  }
 
  @GetMapping("{encoded}")

src/main/java/ac/cnu/realcoding/encoding/Base62Processor.java

@@ -6,11 +6,22 @@ public class Base62Processor {
 
  public static String encode(long number) {
  // TODO: Implement Base62 Encoding Algorithm.
- return "";
+
+ StringBuilder sb = new StringBuilder();
+ do {
+ sb.append(CODEC.charAt((int)(number%BASE)));
+ number /= BASE;
+ } while (number > 0);
+ return sb.reverse().toString();
  }
 
  public static long decode(String encoded) {
  // TODO: Implement Base62 Decoding Algorithm.
- return 0;
+ long sum = 0;
+ for(Character ch : encoded.toCharArray()) {
+ sum *= BASE;
+ sum += CODEC.indexOf(ch);
+ }
+ return sum;
  }
 }

src/main/java/ac/cnu/realcoding/repository/URLInformation.java

@@ -9,6 +9,9 @@ public class URLInformation {
  @Id
  private Long id;
 
+ private String url;
+
  public URLInformation(String url) {
+ this.url=url;
  }
 }

src/main/java/ac/cnu/realcoding/service/UrlShortenerService.java

@@ -2,13 +2,16 @@
 
 import java.net.URI;
 
+import ac.cnu.realcoding.encoding.Base62Processor;
+import ac.cnu.realcoding.repository.URLInformation;
 import org.springframework.stereotype.Service;
 
 import ac.cnu.realcoding.configurations.ApplicationConfiguration;
 import ac.cnu.realcoding.models.UrlShortenerRequest;
 import ac.cnu.realcoding.models.UrlShortenerResponse;
 import ac.cnu.realcoding.repository.URLRepository;
 import lombok.RequiredArgsConstructor;
+import org.springframework.web.util.UriComponentsBuilder;
 import reactor.core.publisher.Mono;
 
 @Service
@@ -22,14 +25,27 @@ public Mono<URI> unshortenUrl(String encoded) {
  // Problem A: Decode encoded String
  // Problem B: Get full url by querying decoded PK.
  // Problem C: if encoded string is invalid or not found return Bad Request
- return Mono.error(new UnsupportedOperationException("not implemented"));
+ return Mono.just(Base62Processor.decode(encoded))
+ .flatMap(decoded -> urlRepository.findById(decoded))
+ .map(URLInformation::getUrl)
+ .map(URI::create);
  }
 
  public Mono<UrlShortenerResponse> shortenUrl(UrlShortenerRequest urlShortenerRequest) {
  // Problem A: Return Bad request for non http:// or https:// scheme
  // Problem B: Insert to database and get PK from database, PK should be auto-generated integer.
  // Problem C: Encode PK by using Base 63.
  // Problem D: Build UrlShortenerResponse with server host and port.
- return Mono.error(new UnsupportedOperationException("not implemented"));
+ String url = urlShortenerRequest.getUrl();
+ return urlRepository.save(new URLInformation(url))
+ .map(URLInformation::getId)
+ .map(Base62Processor::encode)
+ .map(encoded -> UriComponentsBuilder.newInstance()
+ .scheme("http")
+ .host(applicationConfig.getHost())
+ .port(applicationConfig.getPort())
+ .path(encoded)
+ .toUriString())
+ .map(UrlShortenerResponse::of);
  }
 }