Fixes the manual merge instructions on github
// ==UserScript==
// @name Github manual merge
// @namespace https://github.com/lordwelch/
// @version 2.0
// @description Fixes the manual merge instructions on github
// @license MIT
// @author lordwelch
// @match https://github.com/*
// @icon https://www.google.com/s2/favicons?sz=64&domain=github.com
// @grant none
// @run-at document-idle
// ==/UserScript==
(async function() {
'use strict';
console.log("script started");
var pushState = history.pushState;
var replaceState = history.replaceState;
history.pushState = function() {
pushState.apply(history, arguments);
window.dispatchEvent(new Event('pushstate'));
window.dispatchEvent(new Event('locationchange'));
};
history.replaceState = function() {
replaceState.apply(history, arguments);
window.dispatchEvent(new Event('replacestate'));
window.dispatchEvent(new Event('locationchange'));
};
window.addEventListener('popstate', function() {
window.dispatchEvent(new Event('locationchange'));
});
window.addEventListener("load", function() {
window.dispatchEvent(new Event('locationchange'));
});
function breakCheck() {
if (document.getElementById('gh-manual-pull-fix') != null) {
console.log("fix is already applied");
return;
}
if (document.getElementById('gh-manual-merge-fix') != null) {
console.log("fix is already applied");
return;
}
var location = document.location.pathname.match(/\/([^/]+)\/([^/]+)\/pull\/(\d+)$/);
if (location == null) {
console.log("incorrect page");
return;
}
}
function trimSuffix(str, suffix) {
if (str.endsWith(suffix)) {
return str.substr(0, str.length-suffix.length);
}
return str;
}
function trimPrefix(str, prefix) {
if (str.startsWith(prefix)) {
return str.substr(prefix.length-str.length);
}
return str;
}
function FixForkInstructions(argument) {
if (breakCheck()) {
return;
}
var urlObj = document.getElementById("clone-help-git-url");
var url = trimSuffix(urlObj.value.trim(), ".git");
var stepInstructions = document.querySelectorAll('p.step');
var step1 = document.querySelector("#clone-help-step-1");
var step2 = document.querySelector("#clone-help-step-2");
var primaryBranch = step1.textContent.trim().split("\n").at(0).split(" ").at(-1);
var branchName = step1.textContent.trim().split(" ").at(-1);
var repoOwner = url.split("/").at(-2);
if (primaryBranch.indexOf("/") >= 0 || branchName.indexOf("/") >= 0 || repoOwner.indexOf("/") >= 0) {
return
}
var pullInstructions = `git stash\ngit checkout ${primaryBranch}\ngit fetch --force ${url} +${branchName}:${repoOwner}/${branchName}\ngit checkout ${repoOwner}/${branchName}`;
var mergeInstructions = `git checkout ${primaryBranch}\ngit merge ${branchName}`;
var spPull = document.createElement("span");
spPull.id = 'gh-manual-pull-fix';
spPull.textContent = pullInstructions;
var spMerge = document.createElement("span");
spMerge.id = 'gh-manual-merge-fix';
spMerge.textContent = mergeInstructions;
if (breakCheck()) {
return;
}
var parent = step1.parentNode.parentNode;
step1.textContent = '';
step2.textContent = '';
for (let i = 0; i < stepInstructions.length; i++) {
stepInstructions[i].textContent = "";
}
if (breakCheck()) {
return;
}
step1.appendChild(spPull);
var str = document.createElement("strong");
str.textContent = "Pull Instructions:"
stepInstructions[0].appendChild(str);
stepInstructions[0].appendChild(document.createTextNode(" Stash your changes. Checkout the primary branch. Force fetch the pr branch. Checkout the pr branch."));
step2.appendChild(spMerge);
var str = document.createElement("strong");
str.textContent = "Merge Instructions:"
stepInstructions[1].appendChild(str);
stepInstructions[1].appendChild(document.createTextNode(" Checkout the primary branch. Merge the pr branch."));
}
function FixBranchInstructions(argument) {
if (breakCheck()) {
return;
}
var urlObj = document.getElementById("clone-help-git-url");
var url = trimSuffix(urlObj.value.trim(), ".git");
var stepInstructions = document.querySelectorAll('p.step');
var step1 = document.querySelector("#clone-help-step-1");
var step2 = document.querySelector("#clone-help-step-2");
var step3 = document.querySelector("#clone-help-step-3");
var step4 = document.querySelector("#clone-help-step-4");
var primaryBranch = step1.textContent.trim().split(" ").at(-1);
var branchName = step3.textContent.trim().split(" ").at(-1);
var repoOwner = url.split("/").at(-2);
if (primaryBranch.indexOf("/") >= 0 || branchName.indexOf("/") >= 0 || repoOwner.indexOf("/") >= 0) {
return
}
var pullInstructions = `git stash\ngit checkout ${primaryBranch}\ngit fetch --force ${url} ${branchName}\ngit checkout ${branchName}`;
var mergeInstructions = `git checkout ${primaryBranch}\ngit merge ${branchName}`;
var spPull = document.createElement("span");
spPull.id = 'gh-manual-pull-fix';
spPull.textContent = pullInstructions;
var spMerge = document.createElement("span");
spMerge.id = 'gh-manual-merge-fix';
spMerge.textContent = mergeInstructions;
if (breakCheck()) {
return;
}
var parent = step1.parentNode.parentNode;
step1.textContent = '';
step2.textContent = '';
parent.removeChild(step3.parentNode);
parent.removeChild(step4.parentNode);
for (let i = 0; i < stepInstructions.length; i++) {
stepInstructions[i].textContent = "";
}
step1.appendChild(spPull);
var str = document.createElement("strong");
str.textContent = "Pull Instructions:"
stepInstructions[0].appendChild(str);
stepInstructions[0].appendChild(document.createTextNode(" Stash your changes. Checkout the primary branch. Force fetch the pr branch. Checkout the pr branch."));
step2.appendChild(spMerge);
var str = document.createElement("strong");
str.textContent = "Merge Instructions:"
stepInstructions[1].appendChild(str);
stepInstructions[1].appendChild(document.createTextNode(" Checkout the primary branch. Merge the pr branch."));
}
async function fixManualMergeInstructions() {
console.log("script running");
if (breakCheck()) {
return;
}
var location = document.location.pathname.match(/\/([^/]+)\/([^/]+)\/pull\/(\d+)$/);
if (location == null) {
return;
}
var upstreamOwner = location[1];
var upstreamRepo = location[2];
var upstreamPrNum = location[3];
var urlObj = document.getElementById("clone-help-git-url");
while (urlObj == null) {
await new Promise(r => setTimeout(r, 300));
console.log("Waiting for pr to load");
if (breakCheck()) {
return;
}
location = document.location.pathname.match(/\/([^/]+)\/([^/]+)\/pull\/(\d+)$/);
if (location == null) {
continue;
}
upstreamOwner = location[1];
upstreamRepo = location[2];
upstreamPrNum = location[3];
urlObj = document.getElementById("clone-help-git-url");
}
if (breakCheck()) {
return;
}
var prPath = trimSuffix(trimPrefix(urlObj.value, "https://github.com"), ".git");
var prLocation = prPath.match(/\/([^/]+)\/([^/]+)$/);
var downstreamOwner = prLocation[1];
var downstreamRepo = prLocation[2];
if (downstreamRepo != upstreamRepo || downstreamOwner != upstreamOwner) {
FixForkInstructions()
} else {
FixBranchInstructions()
}
}
window.addEventListener('locationchange', fixManualMergeInstructions);
fixManualMergeInstructions();
})();