Provide template directly in comment

Implement a small yml template to md renderer. The specification can be found in the GitHub docs: https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-issue-forms.md

.github/workflows/template-label.js

@@ -1,3 +1,4 @@
+const yaml = require('js-yaml');
 /*
  * Script for commenting on issues/PRs when the template is missing or ignored
  */
@@ -8,19 +9,29 @@ module.exports = async ({github, context}) => {
     const isPR = !!context.payload.pull_request;
     const number = isPR ? context.payload.pull_request.number : context.payload.issue.number;
 
+    let templateInfo;
+    if (isPR) {
+        templateInfo = await fetchTemplateAndGenerateComment('Raw template', 'https://raw.githubusercontent.com/TeamNewPipe/NewPipe/refs/heads/dev/.github/PULL_REQUEST_TEMPLATE.md', false);
+    } else {
+        const templates = {
+            'bug report': 'https://raw.githubusercontent.com/TeamNewPipe/NewPipe/refs/heads/dev/.github/ISSUE_TEMPLATE/bug_report.yml',
+            'feature request': 'https://raw.githubusercontent.com/TeamNewPipe/NewPipe/refs/heads/dev/.github/ISSUE_TEMPLATE/feature_request.yml'
+        };
+
+        const templateParts = await Promise.all(Object.entries(templates).map(async ([templateName, url]) => {
+            return await fetchTemplateAndGenerateComment(templateName, url, true);
+        }));
+
+        templateInfo = templateParts.join('\n\n');
+    }
+
     let body = '';
     if (label === 'template-ignored') {
-      body = 'Please fill in the template completely or at least as much as possible. The team needs more detailed information.';
+      body = 'Please fill in the template completely or at least as much as possible. The team needs more detailed information. Here is the template, in case you deleted parts of it:\n\n' + templateInfo;
     } else if (label === 'template-missing') {
-      const kind = isPR ? 'PR' : 'issue';
-      let template;
-      if (isPR) {
-        template = '<details><summary>Raw template</summary>\n```\n' + process.env.PR_TEMPLATE + '\n```\n</details>';
-      } else {
-        template = '[Bug report template](https://raw.githubusercontent.com/TeamNewPipe/NewPipe/refs/heads/dev/.github/ISSUE_TEMPLATE/bug_report.yml), [Feature request template](https://raw.githubusercontent.com/TeamNewPipe/NewPipe/refs/heads/dev/.github/ISSUE_TEMPLATE/feature_request.yml)';
-      }
-      body = `Thank you for creating this ${kind}. Please edit your description and add the template with the information: ${template}`;
+      body = `Thank you for creating this ${isPR ? 'PR' : 'issue'}. Please edit your description and fill in the correct template with the required information:\n\n${templateInfo}`;
     } else {
+      // should never happen, but just in case
       return;
     }
 
@@ -31,4 +42,76 @@ module.exports = async ({github, context}) => {
       body
     });
 
-}
+}
+
+async function fetchTemplateAndGenerateComment(templateName, url, extractBody) {
+    const response = await fetch(url);
+    if (!response.ok) {
+        console.log(`Failed to fetch ${url}: ${response.status} ${response.statusText}`);
+        return `<details><summary>${templateName}</summary>\n<a href="${url}" target="_blank">View template</a></details>`;
+    }
+    let template = await response.text();
+
+    if (extractBody) {
+        const issueTemplate = yaml.load(template);
+        template = renderIssueForm(issueTemplate.body || []);
+    }
+
+    const codeFence = '\n```\n';
+    return `<details><summary>${templateName}</summary>\n${codeFence}${template}${codeFence}</details>`;
+}
+
+/**
+ * Renders the body of a YAML issue template into a Markdown string.
+ * @see https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-issue-forms.md
+ * @param body
+ * @returns string the Markdown representation of the issue form body
+ */
+function renderIssueForm(body) {
+    return body.map(renderFormElement).filter(Boolean).join('\n\n').trim();
+}
+
+function renderFormElement(element) {
+    const attributes = element.attributes || {};
+    switch (element.type) {
+        case 'markdown':
+            return attributes.value || '';
+        case 'input':
+        case 'textarea':
+        case 'upload':
+            return renderTextElement(attributes);
+        case 'dropdown':
+            return renderDropdown(attributes);
+        case 'checkboxes':
+            return renderCheckboxes(attributes);
+        default:
+            return '';
+    }
+}
+
+function renderTextElement(attributes) {
+    const heading = attributes.label ? `### ${attributes.label}` : '';
+    const description = attributes.description ? `<!--\n${attributes.description}\n-->` : '';
+    const value = attributes.value || attributes.placeholder || '';
+    return [heading, description, value].filter(Boolean).join('\n\n');
+}
+
+function renderDropdown(attributes) {
+    const options = (attributes.options || []).map(option => `- ${option}`).join('\n');
+    return [
+        attributes.label && `### ${attributes.label}`,
+        attributes.description && `<!--\n${attributes.description}\n-->`,
+        options
+    ].filter(Boolean).join('\n\n');
+}
+
+function renderCheckboxes(attributes) {
+    const options = (attributes.options || [])
+        .map(option => `- [ ] ${option.label || option}`)
+        .join('\n');
+    return [
+        attributes.label && `### ${attributes.label}`,
+        attributes.description && `<!--\n${attributes.description}\n-->`,
+        options
+    ].filter(Boolean).join('\n\n');
+}

.github/workflows/template-label.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v6
-        
+
       - name: Get PR template
         if: ${{ github.event.pull_request && github.event.label.name == 'template-missing' }}
         run: |
@@ -28,6 +28,9 @@ jobs:
             echo EOF
           } >> $GITHUB_ENV
 
+      - name: Install js-yaml
+        run: npm install --no-save --ignore-scripts js-yaml@4.1.0
+
       - name: Post comment
         uses: actions/github-script@v8
         timeout-minutes: 2