Expanded GHProject with columns and cards. Also added tests for projects, columns and cards

src/main/java/org/kohsuke/github/GHProjectColumn.java

@@ -0,0 +1,104 @@
+package org.kohsuke.github;
+
+import java.io.FileNotFoundException;
+import java.io.IOException;
+import java.net.URL;
+
+import static org.kohsuke.github.Previews.INERTIA;
+
+/**
+ * @author Gunnar Skjold
+ */
+public class GHProjectColumn extends GHObject {
+	protected GitHub root;
+	protected GHProject project;
+
+	private String name;
+	private String project_url;
+
+	@Override
+	public URL getHtmlUrl() throws IOException {
+		return null;
+	}
+
+	public GHProjectColumn wrap(GitHub root) {
+		this.root = root;
+		return this;
+	}
+
+	public GHProjectColumn wrap(GHProject project) {
+		this.project = project;
+		this.root = project.root;
+		return this;
+	}
+
+	public GitHub getRoot() {
+		return root;
+	}
+
+	public GHProject getProject() throws IOException {
+		if(project == null) {
+			try {
+				project = root.retrieve().to(getProjectUrl().getPath(), GHProject.class).wrap(root);
+			} catch (FileNotFoundException e) {
+				return null;
+			}
+		}
+		return project;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public URL getProjectUrl() {
+		return GitHub.parseURL(project_url);
+	}
+
+	public void setName(String name) throws IOException {
+		edit("name", name);
+	}
+
+	private void edit(String key, Object value) throws IOException {
+		new Requester(root).withPreview(INERTIA)._with(key, value).method("PATCH").to(getApiRoute());
+	}
+
+	protected String getApiRoute() {
+		return String.format("/projects/columns/%d", id);
+	}
+
+	public void delete() throws IOException {
+		new Requester(root).withPreview(INERTIA).method("DELETE").to(getApiRoute());
+	}
+
+	public PagedIterable<GHProjectCard> listCards() throws IOException {
+		final GHProjectColumn column = this;
+		return new PagedIterable<GHProjectCard>() {
+			public PagedIterator<GHProjectCard> _iterator(int pageSize) {
+				return new PagedIterator<GHProjectCard>(root.retrieve().withPreview(INERTIA)
+						.asIterator(String.format("/projects/columns/%d/cards", id), GHProjectCard[].class, pageSize)) {
+					@Override
+					protected void wrapUp(GHProjectCard[] page) {
+						for (GHProjectCard c : page)
+							c.wrap(column);
+					}
+				};
+			}
+		};
+	}
+
+	public GHProjectCard createCard(String note) throws IOException {
+		return root.retrieve().method("POST")
+				.withPreview(INERTIA)
+				.with("note", note)
+				.to(String.format("/projects/columns/%d/cards", id), GHProjectCard.class).wrap(this);
+	}
+
+	public GHProjectCard createCard(GHIssue issue) throws IOException {
+		return root.retrieve().method("POST")
+				.withPreview(INERTIA)
+				.with("content_type", issue instanceof GHPullRequest ? "PullRequest" : "Issue")
+				.with("content_id", issue.getId())
+				.to(String.format("/projects/columns/%d/cards", id), GHProjectCard.class).wrap(this);
+	}
+}