Implement Projects.list() method

Change-Id: I9d4d0b746e5b8cdfe7dfa289411742d2bcf9f4a4

gerrit-acceptance-tests/src/test/java/com/google/gerrit/acceptance/api/project/ProjectIT.java

@@ -15,11 +15,14 @@
 package com.google.gerrit.acceptance.api.project;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertNull;
 
 import com.google.gerrit.acceptance.AbstractDaemonTest;
 import com.google.gerrit.acceptance.NoHttpd;
 import com.google.gerrit.extensions.api.projects.BranchInput;
 import com.google.gerrit.extensions.api.projects.ProjectInput;
+import com.google.gerrit.extensions.common.ProjectInfo;
 import com.google.gerrit.extensions.restapi.ResourceConflictException;
 import com.google.gerrit.extensions.restapi.RestApiException;
 
@@ -27,6 +30,7 @@ import org.eclipse.jgit.api.errors.GitAPIException;
 import org.junit.Test;
 
 import java.io.IOException;
+import java.util.List;
 
 @NoHttpd
 public class ProjectIT extends AbstractDaemonTest  {
@@ -71,4 +75,45 @@ public class ProjectIT extends AbstractDaemonTest  {
         .branch("foo")
         .create(new BranchInput());
   }
+
+  @Test
+  public void listProjects() throws Exception {
+    List<ProjectInfo> initialProjects = gApi.projects().list().get();
+
+    gApi.projects().name("foo").create();
+    gApi.projects().name("bar").create();
+
+    List<ProjectInfo> allProjects = gApi.projects().list().get();
+    assertEquals(initialProjects.size() + 2, allProjects.size());
+
+    List<ProjectInfo> projectsWithDescription = gApi.projects().list()
+        .withDescription(true)
+        .get();
+    assertNotNull(projectsWithDescription.get(0).description);
+
+    List<ProjectInfo> projectsWithoutDescription = gApi.projects().list()
+        .withDescription(false)
+        .get();
+    assertNull(projectsWithoutDescription.get(0).description);
+
+    List<ProjectInfo> noMatchingProjects = gApi.projects().list()
+        .withPrefix("fox")
+        .get();
+    assertEquals(0, noMatchingProjects.size());
+
+    List<ProjectInfo> matchingProject = gApi.projects().list()
+        .withPrefix("fo")
+        .get();
+    assertEquals(1, matchingProject.size());
+
+    List<ProjectInfo> limitOneProject = gApi.projects().list()
+        .withLimit(1)
+        .get();
+    assertEquals(1, limitOneProject.size());
+
+    List<ProjectInfo> startAtOneProjects = gApi.projects().list()
+        .withStart(1)
+        .get();
+    assertEquals(allProjects.size() - 1, startAtOneProjects.size());
+  }
 }

gerrit-server/src/main/java/com/google/gerrit/server/api/projects/ProjectsImpl.java

@@ -14,23 +14,32 @@
 
 package com.google.gerrit.server.api.projects;
 
+import com.google.common.collect.ImmutableList;
 import com.google.gerrit.extensions.api.projects.ProjectApi;
 import com.google.gerrit.extensions.api.projects.Projects;
+import com.google.gerrit.extensions.common.ProjectInfo;
 import com.google.gerrit.extensions.restapi.RestApiException;
 import com.google.gerrit.extensions.restapi.UnprocessableEntityException;
+import com.google.gerrit.server.project.ListProjects;
 import com.google.gerrit.server.project.ProjectsCollection;
 import com.google.inject.Inject;
+import com.google.inject.Provider;
 
 import java.io.IOException;
+import java.util.List;
 
 class ProjectsImpl extends Projects.NotImplemented implements Projects {
   private final ProjectsCollection projects;
   private final ProjectApiImpl.Factory api;
+  private final Provider<ListProjects> listProvider;
 
   @Inject
-  ProjectsImpl(ProjectsCollection projects, ProjectApiImpl.Factory api) {
+  ProjectsImpl(ProjectsCollection projects,
+      ProjectApiImpl.Factory api,
+      Provider<ListProjects> listProvider) {
     this.projects = projects;
     this.api = api;
+    this.listProvider = listProvider;
   }
 
   @Override
@@ -43,4 +52,24 @@ class ProjectsImpl extends Projects.NotImplemented implements Projects {
       throw new RestApiException("Cannot retrieve project");
     }
   }
+
+  @Override
+  public ListRequest list() {
+    return new ListRequest() {
+      @Override
+      public List<ProjectInfo> get() throws RestApiException {
+        return list(this);
+      }
+    };
+  }
+
+  private List<ProjectInfo> list(ListRequest request) throws RestApiException {
+    ListProjects lp = listProvider.get();
+    lp.setShowDescription(request.getDescription());
+    lp.setLimit(request.getLimit());
+    lp.setStart(request.getStart());
+    lp.setMatchPrefix(request.getPrefix());
+
+    return ImmutableList.copyOf(lp.apply().values());
+  }
 }