Initial commit

src/github/validation/trigger.ts

@@ -0,0 +1,137 @@
+#!/usr/bin/env bun
+
+import * as core from "@actions/core";
+import {
+  isIssuesEvent,
+  isIssueCommentEvent,
+  isPullRequestEvent,
+  isPullRequestReviewEvent,
+  isPullRequestReviewCommentEvent,
+} from "../context";
+import type { ParsedGitHubContext } from "../context";
+
+export function checkContainsTrigger(context: ParsedGitHubContext): boolean {
+  const {
+    inputs: { assigneeTrigger, triggerPhrase, directPrompt },
+  } = context;
+
+  // If direct prompt is provided, always trigger
+  if (directPrompt) {
+    console.log(`Direct prompt provided, triggering action`);
+    return true;
+  }
+
+  // Check for assignee trigger
+  if (isIssuesEvent(context) && context.eventAction === "assigned") {
+    // Remove @ symbol from assignee_trigger if present
+    let triggerUser = assigneeTrigger.replace(/^@/, "");
+    const assigneeUsername = context.payload.issue.assignee?.login || "";
+
+    if (triggerUser && assigneeUsername === triggerUser) {
+      console.log(`Issue assigned to trigger user '${triggerUser}'`);
+      return true;
+    }
+  }
+
+  // Check for issue body and title trigger on issue creation
+  if (isIssuesEvent(context) && context.eventAction === "opened") {
+    const issueBody = context.payload.issue.body || "";
+    const issueTitle = context.payload.issue.title || "";
+    // Check for exact match with word boundaries or punctuation
+    const regex = new RegExp(
+      `(^|\\s)${escapeRegExp(triggerPhrase)}([\\s.,!?;:]|$)`,
+    );
+
+    // Check in body
+    if (regex.test(issueBody)) {
+      console.log(
+        `Issue body contains exact trigger phrase '${triggerPhrase}'`,
+      );
+      return true;
+    }
+
+    // Check in title
+    if (regex.test(issueTitle)) {
+      console.log(
+        `Issue title contains exact trigger phrase '${triggerPhrase}'`,
+      );
+      return true;
+    }
+  }
+
+  // Check for pull request body and title trigger
+  if (isPullRequestEvent(context)) {
+    const prBody = context.payload.pull_request.body || "";
+    const prTitle = context.payload.pull_request.title || "";
+    // Check for exact match with word boundaries or punctuation
+    const regex = new RegExp(
+      `(^|\\s)${escapeRegExp(triggerPhrase)}([\\s.,!?;:]|$)`,
+    );
+
+    // Check in body
+    if (regex.test(prBody)) {
+      console.log(
+        `Pull request body contains exact trigger phrase '${triggerPhrase}'`,
+      );
+      return true;
+    }
+
+    // Check in title
+    if (regex.test(prTitle)) {
+      console.log(
+        `Pull request title contains exact trigger phrase '${triggerPhrase}'`,
+      );
+      return true;
+    }
+  }
+
+  // Check for pull request review body trigger
+  if (
+    isPullRequestReviewEvent(context) &&
+    (context.eventAction === "submitted" || context.eventAction === "edited")
+  ) {
+    const reviewBody = context.payload.review.body || "";
+    // Check for exact match with word boundaries or punctuation
+    const regex = new RegExp(
+      `(^|\\s)${escapeRegExp(triggerPhrase)}([\\s.,!?;:]|$)`,
+    );
+    if (regex.test(reviewBody)) {
+      console.log(
+        `Pull request review contains exact trigger phrase '${triggerPhrase}'`,
+      );
+      return true;
+    }
+  }
+
+  // Check for comment trigger
+  if (
+    isIssueCommentEvent(context) ||
+    isPullRequestReviewCommentEvent(context)
+  ) {
+    const commentBody = isIssueCommentEvent(context)
+      ? context.payload.comment.body
+      : context.payload.comment.body;
+    // Check for exact match with word boundaries or punctuation
+    const regex = new RegExp(
+      `(^|\\s)${escapeRegExp(triggerPhrase)}([\\s.,!?;:]|$)`,
+    );
+    if (regex.test(commentBody)) {
+      console.log(`Comment contains exact trigger phrase '${triggerPhrase}'`);
+      return true;
+    }
+  }
+
+  console.log(`No trigger was met for ${triggerPhrase}`);
+
+  return false;
+}
+
+export function escapeRegExp(string: string) {
+  return string.replace(/[.*+?^${}()|[\]\\]/g, "\\$&");
+}
+
+export async function checkTriggerAction(context: ParsedGitHubContext) {
+  const containsTrigger = checkContainsTrigger(context);
+  core.setOutput("contains_trigger", containsTrigger.toString());
+  return containsTrigger;
+}