Add list-public-repositories API (#2529)

src/main/scala/gitbucket/core/controller/api/ApiRepositoryControllerBase.scala

@@ -54,11 +54,15 @@ trait ApiRepositoryControllerBase extends ControllerBase {
     })
   }
 
-  /*
+  /**
    * iv. List all public repositories
-   * https://developer.github.com/v3/repos/#list-all-public-repositories
-   * Not implemented
+   * https://developer.github.com/v3/repos/#list-public-repositories
    */
+  get("/api/v3/repositories") {
+    JsonFormat(getPublicRepositories().map { r =>
+      ApiRepository(r, getAccountByUserName(r.owner).get)
+    })
+  }
 
   /*
    * v. Create

src/main/scala/gitbucket/core/service/RepositoryService.scala

@@ -380,6 +380,21 @@ trait RepositoryService {
       .list
   }
 
+  /**
+   * Returns the all public repositories.
+   *
+   * @return the repository information list
+   */
+  def getPublicRepositories(withoutPhysicalInfo: Boolean = false)(implicit s: Session): List[RepositoryInfo] = {
+    Repositories
+      .filter { t1 =>
+        t1.isPrivate === false.bind
+      }
+      .sortBy(_.lastActivityDate desc)
+      .list
+      .map(createRepositoryInfo(_, withoutPhysicalInfo))
+  }
+
   /**
    * Returns the list of repositories which are owned by the specified user.
    * This list includes group repositories if the specified user is a member of the group.