From b5854566bd2cb95de28938f4733a3f2dbc11c6e9 Mon Sep 17 00:00:00 2001
From: Axel Pettersson <axel@pettersson.cc>
Date: Mon, 3 Jun 2024 11:48:07 +0200
Subject: [PATCH] Finish automatic updating action

---
 actions/update-standpoints/src/constants.mjs  |  4 +++
 .../update-standpoints/src/github-helper.mjs  | 31 ++++++++++++-------
 actions/update-standpoints/src/main.mjs       | 24 ++++++++++----
 3 files changed, 41 insertions(+), 18 deletions(-)

diff --git a/actions/update-standpoints/src/constants.mjs b/actions/update-standpoints/src/constants.mjs
index d1a92e172..6d7c87e11 100644
--- a/actions/update-standpoints/src/constants.mjs
+++ b/actions/update-standpoints/src/constants.mjs
@@ -1,7 +1,11 @@
 // @ts-check
 export const COMMIT_MESSAGE = "chore(party-data): Update standpoints";
+export const PR_TITLE = COMMIT_MESSAGE;
+export const PR_BODY =
+  "This PR was automatically generated by the update-standpoints action.";
 
 export const BRANCH_NAME = "action/update-standpoints";
+export const PR_BASE = "main";
 export const TEMP_BRANCH_NAME = `temp-${BRANCH_NAME}`;
 
 export const GIT_USERNAME = "github-actions[bot]";
diff --git a/actions/update-standpoints/src/github-helper.mjs b/actions/update-standpoints/src/github-helper.mjs
index 91c99cac6..31b9130e2 100644
--- a/actions/update-standpoints/src/github-helper.mjs
+++ b/actions/update-standpoints/src/github-helper.mjs
@@ -1,26 +1,33 @@
 import core from "@actions/core";
 import github from "@actions/github";
 
+import { BRANCH_NAME, PR_BASE, PR_BODY, PR_TITLE } from "./constants.mjs";
+
 const { context } = github;
 
 const token = core.getInput("github-token");
 const client = github.getOctokit(token);
 
-/**
- *
- * @param {string} title
- * @param {string} body
- * @param {string} head
- * @param {string} base
- */
-export async function createPullRequest(title, body, head, base = "main") {
+export async function createPullRequest() {
   const { data } = await client.rest.pulls.create({
     owner: context.repo.owner,
     repo: context.repo.repo,
-    title: title,
-    body,
-    head,
-    base,
+    title: PR_TITLE,
+    body: PR_BODY,
+    head: BRANCH_NAME,
+    base: PR_BASE,
   });
   return data;
 }
+
+export async function findOpenPullRequest() {
+  const { data } = await client.rest.pulls.list({
+    owner: context.repo.owner,
+    repo: context.repo.repo,
+    base: PR_BASE,
+    head: `${context.repo.owner}:${BRANCH_NAME}`,
+    state: "open",
+  });
+
+  return data[0];
+}
diff --git a/actions/update-standpoints/src/main.mjs b/actions/update-standpoints/src/main.mjs
index 336944ce4..64878389d 100644
--- a/actions/update-standpoints/src/main.mjs
+++ b/actions/update-standpoints/src/main.mjs
@@ -6,7 +6,7 @@ import {
   COMMIT_MESSAGE,
   GIT_EMAIL,
   GIT_USERNAME,
-  MAIN_BRANCH,
+  PR_BASE,
   TEMP_BRANCH_NAME,
 } from "./constants.mjs";
 import {
@@ -19,6 +19,7 @@ import {
   push,
   setGitIdentity,
 } from "./git-helper.mjs";
+import { createPullRequest, findOpenPullRequest } from "./github-helper.mjs";
 
 core.startGroup("Checking if changes exist");
 const hasDiff = await checkHasDiff();
@@ -33,7 +34,7 @@ core.startGroup("Setting git identity");
 await setGitIdentity(GIT_USERNAME, GIT_EMAIL);
 core.endGroup();
 
-core.startGroup("Create branch and commit changes");
+core.startGroup("Creating / updating branch and commit changes");
 const branchExists = await checkIfBranchExists(BRANCH_NAME);
 if (branchExists) {
   core.info(`Branch ${BRANCH_NAME} already exists, rebasing...`);
@@ -48,8 +49,7 @@ if (branchExists) {
 await commit(COMMIT_MESSAGE);
 core.endGroup();
 
-core.startGroup("Push changes");
-// Push changes
+core.startGroup("Pushing changes");
 if (branchExists) {
   core.info(`Force pushing changes to ${BRANCH_NAME}...`);
   await forcePush(`${TEMP_BRANCH_NAME}:${BRANCH_NAME}`);
@@ -59,5 +59,17 @@ if (branchExists) {
 }
 core.endGroup();
 
-// Create pull request
-// TODO
+core.startGroup("Creating pull request");
+core.info("Checking if pull request already exists...");
+const existingPR = await findOpenPullRequest();
+if (existingPR) {
+  core.info(`Pull request #${existingPR.number} already exists`);
+  core.info(`URL: ${existingPR.html_url}`);
+  process.exit(0);
+}
+core.info("Pull request does not exist, creating...");
+const data = await createPullRequest();
+core.info(
+  `Pull request created for ${BRANCH_NAME} to ${PR_BASE}. URL: ${data.html_url}`,
+);
+core.endGroup();