Introduce index resource with first links

scm-webapp/src/main/java/sonia/scm/api/v2/resources/IndexDto.java

@@ -0,0 +1,11 @@
+package sonia.scm.api.v2.resources;
+
+import de.otto.edison.hal.HalRepresentation;
+import de.otto.edison.hal.Links;
+
+public class IndexDto extends HalRepresentation {
+
+  IndexDto(Links links) {
+    super(links);
+  }
+}

scm-webapp/src/main/java/sonia/scm/api/v2/resources/IndexDtoGenerator.java

@@ -0,0 +1,34 @@
+package sonia.scm.api.v2.resources;
+
+import de.otto.edison.hal.Link;
+import de.otto.edison.hal.Links;
+import org.apache.shiro.SecurityUtils;
+
+import javax.inject.Inject;
+
+public class IndexDtoGenerator {
+
+  private final ResourceLinks resourceLinks;
+
+  @Inject
+  public IndexDtoGenerator(ResourceLinks resourceLinks) {
+    this.resourceLinks = resourceLinks;
+  }
+
+  public IndexDto generate() {
+    Links.Builder builder = Links.linkingTo();
+    if (SecurityUtils.getSubject().isAuthenticated()) {
+      builder.single(
+        Link.link("me", resourceLinks.me().self()),
+        Link.link("logout", resourceLinks.authentication().logout())
+      );
+    } else {
+      builder.single(
+        Link.link("formLogin", resourceLinks.authentication().formLogin()),
+        Link.link("jsonLogin", resourceLinks.authentication().jsonLogin())
+      );
+    }
+
+    return new IndexDto(builder.build());
+  }
+}

scm-webapp/src/main/java/sonia/scm/api/v2/resources/IndexResource.java

@@ -0,0 +1,22 @@
+package sonia.scm.api.v2.resources;
+
+import javax.inject.Inject;
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+
+@Path(IndexResource.INDEX_PATH_V2)
+public class IndexResource {
+  public static final String INDEX_PATH_V2 = "v2/";
+
+  private final IndexDtoGenerator indexDtoGenerator;
+
+  @Inject
+  public IndexResource(IndexDtoGenerator indexDtoGenerator) {
+    this.indexDtoGenerator = indexDtoGenerator;
+  }
+
+  @GET
+  public IndexDto getIndex() {
+    return indexDtoGenerator.generate();
+  }
+}

scm-webapp/src/main/java/sonia/scm/api/v2/resources/ResourceLinks.java

@@ -3,7 +3,6 @@ package sonia.scm.api.v2.resources;
 import sonia.scm.repository.NamespaceAndName;
 
 import javax.inject.Inject;
-import javax.ws.rs.core.UriInfo;
 import java.net.URI;
 
 class ResourceLinks {
@@ -473,4 +472,28 @@ class ResourceLinks {
       return uiPluginCollectionLinkBuilder.method("plugins").parameters().method("getInstalledPlugins").parameters().href();
     }
   }
+
+  public AuthenticationLinks authentication() {
+    return new AuthenticationLinks(scmPathInfoStore.get());
+  }
+
+  static class AuthenticationLinks {
+    private final LinkBuilder loginLinkBuilder;
+
+    AuthenticationLinks(ScmPathInfo pathInfo) {
+      this.loginLinkBuilder = new LinkBuilder(pathInfo, AuthenticationResource.class);
+    }
+
+    String formLogin() {
+      return loginLinkBuilder.method("authenticateViaForm").parameters().href();
+    }
+
+    String jsonLogin() {
+      return loginLinkBuilder.method("authenticateViaJSONBody").parameters().href();
+    }
+
+    String logout() {
+      return loginLinkBuilder.method("logout").parameters().href();
+    }
+  }
 }