Makes text-searched GitLab PRs checkoutable

(#3788, #3795)

Author: sergeibbb

src/plus/integrations/providers/gitlab/gitlab.ts

@@ -45,6 +45,8 @@ import { fromGitLabMergeRequest, fromGitLabMergeRequestREST, fromGitLabMergeRequ
 
 // drop it as soon as we switch to @gitkraken/providers-api
 const gitlabUserIdPrefix = 'gid://gitlab/User/';
+const gitlabMergeRequestIdPrefix = 'gid://gitlab/MergeRequest/';
+
 function buildGitLabUserId(id: string | undefined): string | undefined {
 	return id?.startsWith(gitlabUserIdPrefix) ? id.substring(gitlabUserIdPrefix.length) : id;
 }
@@ -724,11 +726,12 @@ export class GitLabApi implements Disposable {
 			return [];
 		}
 		try {
+			const perPageLimit = 20; // with bigger amount we exceed the max GraphQL complexity in the next query
 			const gitlabPRs = await this.request<GitLabMergeRequestREST[]>(
 				provider,
 				token,
 				options?.baseUrl,
-				`v4/search/?scope=merge_requests&search=${search}`,
+				`v4/search/?scope=merge_requests&search=${search}&per_page=${perPageLimit}`,
 				{
 					method: 'GET',
 				},
@@ -739,15 +742,78 @@ export class GitLabApi implements Disposable {
 				return [];
 			}
 
-			const prs: PullRequest[] = gitlabPRs.map(pr => {
-				const fullRef = pr.references.full;
-				const project = {
-					owner: fullRef.substring(0, fullRef.lastIndexOf('/')),
-					repo: fullRef.substring(fullRef.lastIndexOf('/') + 1, fullRef.lastIndexOf('!')),
-				};
-				return fromGitLabMergeRequestREST(pr, provider, project);
-			});
-			return prs;
+			interface QueryResult {
+				data: Record<`mergeRequest_${number}`, GitLabMergeRequestFull>;
+			}
+
+			const queryArgs = gitlabPRs.map((_, i) => `$id_${i}: MergeRequestID!`).join('\n');
+			const queryFields = gitlabPRs
+				.map((_, i) => `mergeRequest_${i}: mergeRequest(id: $id_${i}) { ...mergeRequestFields }`)
+				.join('\n');
+			// Set of fields includes only additional fields that are not included in GitLabMergeRequestREST.
+			// It's limited as much as possible to reduce complexity of the query.
+			const queryMrFields = `fragment mergeRequestFields on MergeRequest {
+				diffRefs {
+					baseSha
+					headSha
+				}
+				project {
+					id
+					fullPath
+					webUrl
+				}
+				sourceProject {
+					id
+					fullPath
+					webUrl
+				}
+			}`;
+			const query = `query getMergeRequests (${queryArgs}) {${queryFields}} ${queryMrFields}`;
+
+			const params = gitlabPRs.reduce<Record<`id_${number}`, string>>((ids, gitlabRestPr, i) => {
+				ids[`id_${i}`] = `${gitlabMergeRequestIdPrefix}${gitlabRestPr.id}`;
+				return ids;
+			}, {});
+			const rsp = await this.graphql<QueryResult>(
+				provider,
+				token,
+				options?.baseUrl,
+				query,
+				params,
+				cancellation,
+				scope,
+			);
+			if (rsp?.data != null) {
+				const resultPrs = gitlabPRs.reduce<PullRequest[]>((prsAggr, gitLabPr, i) => {
+					const pr = rsp.data[`mergeRequest_${i}`];
+					const fullPr: GitLabMergeRequestFull = {
+						...pr,
+						iid: String(gitLabPr.iid),
+						id: String(gitLabPr.id),
+						state: gitLabPr.state,
+						author: {
+							id: buildGitLabUserId(gitLabPr.author?.id) ?? '',
+							name: gitLabPr.author?.name ?? 'Unknown',
+							avatarUrl: gitLabPr.author?.avatar_url ?? '',
+							webUrl: gitLabPr.author?.web_url ?? '',
+						},
+						title: gitLabPr.title,
+						description: gitLabPr.description,
+						webUrl: gitLabPr.web_url,
+						createdAt: gitLabPr.created_at,
+						updatedAt: gitLabPr.updated_at,
+						mergedAt: gitLabPr.merged_at,
+						sourceBranch: gitLabPr.source_branch,
+						targetBranch: gitLabPr.target_branch,
+					};
+					if (pr != null) {
+						prsAggr.push(fromGitLabMergeRequest(fullPr, provider));
+					}
+					return prsAggr;
+				}, []);
+				return resultPrs;
+			}
+			return [];
 		} catch (ex) {
 			if (ex instanceof RequestNotFoundError) return [];
 

src/plus/integrations/providers/gitlab/models.ts

@@ -78,7 +78,7 @@ export interface GitLabMergeRequestFull extends GitLabMergeRequest {
 	diffRefs: {
 		baseSha: string | null;
 		headSha: string;
-	};
+	} | null;
 	project: GitLabRepositoryStub;
 	sourceProject: GitLabRepositoryStub;
 }
@@ -228,15 +228,15 @@ function fromGitLabMergeRequestRefs(pr: GitLabMergeRequestFull): PullRequestRefs
 			exists: true,
 			url: pr.sourceProject.webUrl,
 			repo: pr.sourceProject.fullPath,
-			sha: pr.diffRefs.baseSha || '',
+			sha: pr.diffRefs?.baseSha || '',
 		},
 		head: {
 			owner: getRepoNamespace(pr.project.fullPath),
 			branch: pr.targetBranch,
 			exists: true,
 			url: pr.project.webUrl,
 			repo: pr.project.fullPath,
-			sha: pr.diffRefs.headSha,
+			sha: pr.diffRefs?.headSha || '',
 		},
 		isCrossRepository: pr.sourceProject.id !== pr.project.id,
 	};