Merge pull request #354 from online-judge-tools/fix/master-main

Add a feature to retrieve the default branch to the web installer

.verify-helper/docs/static/installer.ja.md

@@ -9,6 +9,7 @@
 1.  <form>
         <label>競プロライブラリの GitHub のレポジトリの URL を右の textbox に入力: </label>
         <input type="text" id="input" placeholder="https://github.com/beet-aizu/library" value="https://github.com/beet-aizu/library" size="48">
+        (ブランチ: <input type="text" id="input-branch" placeholder="master" value="master" size="12">)
     </form>
 
 1.  ページ <a id="output" target="_blank"></a> を開き、下の方にある緑の `Commit new file` ボタンを押す

.verify-helper/docs/static/installer.js

@@ -13,6 +13,7 @@ data["example.test.cpp"] = (function () {
 })();
 
 const input = document.getElementById("input");
+const inputBranch = document.getElementById("input-branch");
 const output = document.getElementById("output");
 const output2 = document.getElementById("output2");
 const output3 = document.getElementById("output3");
@@ -27,22 +28,36 @@ const output11 = document.getElementById("output11");
 const output12 = document.getElementById("output12");
 const output13 = document.getElementById("output13");
 
-function update() {
+function retrieveDefaultBranch() {
+    const found = input.value.match(/\/github.com\/([^\/]+)\/([^\/]+)/);
+    if (!found) return;
+    const url = "https://api.github.com/repos/" + found[1] + "/" + found[2];
+    const req = new XMLHttpRequest();
+    req.open("GET", url, false);
+    req.send();
+    const resp = JSON.parse(req.responseText);
+    if (resp['default_branch']) {
+        inputBranch.value = resp['default_branch'];
+    }
+}
+
+function updateLinks() {
     const found = input.value.match(/\/github.com\/([^\/]+)\/([^\/]+)/);
     if (found) {
         const url = input.value.replace(/\/$/, "");
         const ghpages = "https://" + found[1] + ".github.io/" + found[2] + "/";
+        const branch = inputBranch.value;
 
         // adding verify.yml
         const filename = ".github%2Fworkflows%2Fverify.yml"
         const value = encodeURIComponent(data["verify.yml"].replace("git+https://github.com/online-judge-tools/verification-helper.git@master", "online-judge-verify-helper"));
-        output.href = url + "/new/master?filename=" + filename + "&value=" + value;
+        output.href = url + "/new/" + branch + "?filename=" + filename + "&value=" + value;
         output.textContent = url + "&value=...";
 
         // adding example.text.cpp
         const filename2 = "example.test.cpp";
         const value2 = encodeURIComponent(data["example.test.cpp"]);
-        output2.href = url + "/new/master?filename=" + filename2 + "&value=" + value2;
+        output2.href = url + "/new/" + branch + "?filename=" + filename2 + "&value=" + value2;
 
         // links to GitHub Actions
         output3.href = input.value.replace(/\/$/, "") + "/actions";
@@ -66,6 +81,14 @@ function update() {
         output13.href = url + "/commits/gh-pages";
     }
 }
+
+function update() {
+    retrieveDefaultBranch();
+    updateLinks();
+}
+
 input.addEventListener('change', update);
 input.addEventListener('keyup', update);
-update();
+inputBranch.addEventListener('change', updateLinks);
+inputBranch.addEventListener('keyup', updateLinks);
+updateLinks();

.verify-helper/docs/static/installer.md

@@ -9,6 +9,7 @@ Steps:
 1.  <form>
         <label>Input the URL of the library repository in the textbox on the right: </label>
         <input type="text" id="input" placeholder="https://github.com/beet-aizu/library" value="https://github.com/beet-aizu/library" size="48">
+        (branch: <input type="text" id="input-branch" placeholder="master" value="master" size="12">)
     </form>
 
 1.  Open <a id="output" target="_blank"></a> and click the green `Commit new file` button.