Assign PR owner to linked issue

app.yml

@@ -24,18 +24,18 @@ default_events:
   # - gollum
   - issue_comment
   - issues
-# - label
-# - milestone
-# - member
-# - membership
-# - org_block
-# - organization
-# - page_build
-# - project
-# - project_card
-# - project_column
-# - public
-# - pull_request
+  # - label
+  # - milestone
+  # - member
+  # - membership
+  # - org_block
+  # - organization
+  # - page_build
+  # - project
+  # - project_card
+  # - project_column
+  # - public
+  - pull_request
 # - pull_request_review
 # - pull_request_review_comment
 # - push
@@ -82,7 +82,7 @@ default_permissions:
 
   # Pull requests and related comments, assignees, labels, milestones, and merges.
   # https://developer.github.com/v3/apps/permissions/#permission-on-pull-requests
-  # pull_requests: read
+  pull_requests: read
 
   # Manage the post-receive hooks for a repository.
   # https://developer.github.com/v3/apps/permissions/#permission-on-repository-hooks

src/handlers/assign/auto.ts

@@ -0,0 +1,51 @@
+import { getBotContext, getLogger } from "../../bindings";
+import { addAssignees, getIssueByNumber, getPullRequests } from "../../helpers";
+import { gitLinkedIssueParser } from "../../helpers/parser";
+import { Payload } from "../../types";
+
+// Check for pull requests linked to their respective issues but not assigned to them
+export const checkPullRequests = async () => {
+  const context = getBotContext();
+  const logger = getLogger();
+  const pulls = await getPullRequests(context);
+
+  if (pulls.length === 0) {
+    logger.debug(`No pull requests found at this time`);
+    return;
+  }
+
+  const payload = context.payload as Payload;
+
+  // Loop through the pull requests and assign them to their respective issues if needed
+  for (const pull of pulls) {
+    let pullRequestLinked = await gitLinkedIssueParser({
+      owner: payload.repository.owner.login,
+      repo: payload.repository.name,
+      issue_number: pull.number,
+    });
+
+    // if pullRequestLinked is empty, continue
+    if (pullRequestLinked == "") {
+      continue;
+    }
+
+    const linkedIssueNumber = pullRequestLinked.substring(pullRequestLinked.lastIndexOf("/") + 1);
+
+    // Check if the pull request opener is assigned to the issue
+    const opener = pull!.user!.login;
+
+    let issue = await getIssueByNumber(context, +linkedIssueNumber);
+
+    // if issue is already assigned, continue
+    if (issue!.assignees!.length > 0) {
+      logger.debug(`Issue already assigned, ignoring...`);
+      continue;
+    }
+
+    const assignedUsernames = issue!.assignees!.map((assignee) => assignee.login);
+    if (!assignedUsernames.includes(opener)) {
+      await addAssignees(+linkedIssueNumber, [opener]);
+      logger.debug(`Assigned pull request #${pull.number} opener to issue ${linkedIssueNumber}.`);
+    }
+  }
+};

src/handlers/processors.ts

@@ -5,6 +5,7 @@ import { checkBountiesToUnassign, collectAnalytics, checkWeeklyUpdate } from "./
 import { nullHandler } from "./shared";
 import { handleComment } from "./comment";
 import { handleIssueClosed } from "./payout";
+import { checkPullRequests } from "./assign/auto";
 
 export const processors: Record<string, Handler> = {
   [GithubEvent.ISSUES_LABELED]: {
@@ -37,6 +38,11 @@ export const processors: Record<string, Handler> = {
     action: [handleIssueClosed],
     post: [nullHandler],
   },
+  [GithubEvent.PULL_REQUEST_OPENED]: {
+    pre: [nullHandler],
+    action: [checkPullRequests],
+    post: [nullHandler],
+  },
 };
 
 /**

src/helpers/issue.ts

@@ -1,3 +1,4 @@
+import { Context } from "probot";
 import { getBotContext, getLogger } from "../bindings";
 import { Comment, Payload } from "../types";
 import { checkRateLimitGit } from "../utils";
@@ -187,3 +188,37 @@ export const deleteLabel = async (label: string): Promise<void> => {
     logger.debug(`Label deletion failed!, reason: ${e}`);
   }
 };
+
+// Use `context.octokit.rest` to get the pull requests for the repository
+export const getPullRequests = async (context: Context, state: "open" | "closed" | "all" = "open") => {
+  const logger = getLogger();
+  const payload = context.payload as Payload;
+  try {
+    const { data: pulls } = await context.octokit.rest.pulls.list({
+      owner: payload.repository.owner.login,
+      repo: payload.repository.name,
+      state,
+    });
+    return pulls;
+  } catch (e: unknown) {
+    logger.debug(`Fetching pull requests failed!, reason: ${e}`);
+    return [];
+  }
+};
+
+// Get issues by issue number
+export const getIssueByNumber = async (context: Context, issue_number: number) => {
+  const logger = getLogger();
+  const payload = context.payload as Payload;
+  try {
+    const { data: issue } = await context.octokit.rest.issues.get({
+      owner: payload.repository.owner.login,
+      repo: payload.repository.name,
+      issue_number,
+    });
+    return issue;
+  } catch (e: unknown) {
+    logger.debug(`Fetching issue failed!, reason: ${e}`);
+    return;
+  }
+};

src/helpers/parser.ts

@@ -24,3 +24,21 @@ export const gitIssueParser = async ({ owner, repo, issue_number }: GitParser):
     return true;
   }
 };
+
+export const gitLinkedIssueParser = async ({ owner, repo, issue_number }: GitParser): Promise<string> => {
+  try {
+    const { data } = await axios.get(`https://github.com/${owner}/${repo}/pull/${issue_number}`);
+    const dom = parse(data);
+    const devForm = dom.querySelector("[data-target='create-branch.developmentForm']") as HTMLElement;
+    const linkedPRs = devForm.querySelectorAll(".my-1");
+
+    if (linkedPRs.length === 0) {
+      return "";
+    }
+
+    const prUrl = linkedPRs[0].querySelector("a")?.attrs?.href || "";
+    return prUrl;
+  } catch (error) {
+    return "";
+  }
+};

src/types/payload.ts

@@ -13,6 +13,9 @@ export enum GithubEvent {
   // issue_comment
   ISSUE_COMMENT_CREATED = "issue_comment.created",
   ISSUE_COMMENT_EDITED = "issue_comment.edited",
+
+  // pull_request
+  PULL_REQUEST_OPENED = "pull_request.opened",
 }
 
 export enum UserType {