SnowLuma v2.4.2 source snapshot

.github/scripts/pr-policy-guard.cjs

@@ -0,0 +1,204 @@
+const COMMENT_MARKER = '<!-- snowluma-pr-policy-guard -->';
+const TEMPLATE_LABELS = new Set(['bug', 'enhancement']);
+const PRIVILEGED_AUTHORS = new Set(['OWNER', 'MEMBER', 'COLLABORATOR']);
+
+function prose(body) {
+  let fence = null;
+  return (body || '')
+    .replace(/<!--[\s\S]*?(?:-->|$)/g, '')
+    .split(/\r?\n/)
+    .map((line) => {
+      const marker = /^ {0,3}(`{3,}|~{3,})(.*)$/.exec(line);
+
+      if (fence) {
+        if (
+          marker &&
+          marker[1][0] === fence[0] &&
+          marker[1].length >= fence.length &&
+          !marker[2].trim()
+        ) {
+          fence = null;
+        }
+
+        return '';
+      }
+
+      if (marker) {
+        fence = marker[1];
+        return '';
+      }
+
+      if (/^(?: {4}|\t|\s*>)/.test(line)) {
+        return '';
+      }
+
+      return line;
+    })
+    .join('\n')
+    .replace(/(`+)[\s\S]*?\1/g, '');
+}
+
+function referencedIssues(body, context) {
+  const repository = `${context.repo.owner}/${context.repo.repo}`.toLowerCase();
+  const references = new Set();
+  const pattern =
+    /\b(?:refs?|close[sd]?|fix(?:e[sd])?|resolve[sd]?):?[ \t]+(https?:\/\/[^\s<>]+|(?:[\w.-]+\/[\w.-]+)?#[1-9]\d*)(?![\w/#-])/gi;
+
+  for (const match of prose(body).matchAll(pattern)) {
+    const reference = match[1].replace(/[),.;!?]+$/, '');
+    let number;
+
+    if (/^https?:\/\//i.test(reference)) {
+      let url;
+
+      try {
+        url = new URL(reference);
+      } catch {
+        continue;
+      }
+
+      const path = url.pathname.match(/^\/([^/]+\/[^/]+)\/issues\/([1-9]\d*)\/?$/i);
+
+      if (!path || url.origin !== context.serverUrl || path[1].toLowerCase() !== repository) {
+        continue;
+      }
+
+      number = Number(path[2]);
+    } else {
+      const [name, id] = reference.split('#');
+
+      if (name && name.toLowerCase() !== repository) {
+        continue;
+      }
+
+      number = Number(id);
+    }
+
+    if (Number.isSafeInteger(number) && number > 0) {
+      references.add(number);
+    }
+  }
+
+  return [...references];
+}
+
+async function violation(pr, github, context) {
+  if (pr.base.ref !== 'dev') {
+    return 'PR 的目标分支必须是 `dev`；`main` 仅由维护者的发布流程更新。';
+  }
+
+  const numbers = referencedIssues(pr.body, context);
+
+  if (numbers.length === 0) {
+    return 'PR 正文缺少本仓库 issue 的关联标记。请填写 `Refs #编号`、`Closes #编号`、`Fixes #编号` 或 `Resolves #编号`。';
+  }
+
+  const failures = [];
+
+  for (const issue_number of numbers) {
+    let issue;
+
+    try {
+      ({ data: issue } = await github.rest.issues.get({ ...context.repo, issue_number }));
+    } catch (error) {
+      if (error.status !== 404 && error.status !== 410) {
+        throw error;
+      }
+
+      failures.push(`#${issue_number} 不存在或不可访问`);
+      continue;
+    }
+
+    const expectedUrl = `${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/issues/${issue_number}`;
+
+    if (issue.pull_request) {
+      failures.push(`#${issue_number} 是 PR，不是 issue`);
+    } else if (issue.html_url.toLowerCase() !== expectedUrl.toLowerCase()) {
+      failures.push(`#${issue_number} 已不属于本仓库`);
+    } else if (issue.state !== 'open') {
+      failures.push(`#${issue_number} 已关闭`);
+    } else if (Date.parse(issue.created_at) > Date.parse(pr.created_at)) {
+      failures.push(`#${issue_number} 晚于本 PR 创建，请先提 issue 再创建 PR`);
+    } else if (
+      !PRIVILEGED_AUTHORS.has(issue.author_association) &&
+      !issue.labels.some((label) =>
+        TEMPLATE_LABELS.has(typeof label === 'string' ? label : label.name),
+      )
+    ) {
+      // Match issue-template-guard.yml immediately, without racing its
+      // asynchronous close action. Its GITHUB_TOKEN cannot trigger us.
+      failures.push(`#${issue_number} 未通过 issue 模板检查`);
+    } else {
+      return null;
+    }
+  }
+
+  return `没有有效的关联 issue：${failures.join('；')}。`;
+}
+
+module.exports = async function guard({ github, context, core }) {
+  const params = { ...context.repo, pull_number: context.issue.number };
+  const { data: pr } = await github.rest.pulls.get(params);
+
+  if (pr.state !== 'open' || pr.merged) {
+    core.info('PR is no longer open; nothing to enforce.');
+    return;
+  }
+
+  const reason = await violation(pr, github, context);
+
+  if (!reason) {
+    core.info(`PR #${pr.number} targets dev and references an eligible issue.`);
+    return;
+  }
+
+  // An edit may have fixed the policy while its issue lookup was in flight.
+  const { data: current } = await github.rest.pulls.get(params);
+
+  if (
+    current.state !== 'open' ||
+    current.merged ||
+    current.body !== pr.body ||
+    current.base.ref !== pr.base.ref
+  ) {
+    core.info('PR changed during validation; leaving it to the next event.');
+    return;
+  }
+
+  const commentParams = { ...context.repo, issue_number: pr.number };
+  const comments = await github.paginate(github.rest.issues.listComments, {
+    ...commentParams,
+    per_page: 100,
+  });
+  const previous = comments.find(
+    (comment) =>
+      comment.user?.login === 'github-actions[bot]' && comment.body?.startsWith(COMMENT_MARKER),
+  );
+  const body = [
+    COMMENT_MARKER,
+    '此 PR 未满足贡献要求，现自动关闭。',
+    '',
+    reason,
+    '',
+    '请先通过 [GitHub 网页模板](' +
+      context.serverUrl +
+      '/' +
+      context.repo.owner +
+      '/' +
+      context.repo.repo +
+      '/issues/new/choose) 提交 issue；也可以认领已有的对应 issue。',
+    'PR 必须指向 `dev`，并在正文引用至少一个先于 PR 创建、仍开放且通过模板检查的本仓库 issue。注释、代码示例和引用块中的标记不计入。',
+    '若已有符合要求的 issue，可修改目标分支或正文后重新打开 PR；若需新建 issue，请先完成 issue 再创建新的 PR。',
+  ].join('\n');
+
+  if (previous) {
+    if (previous.body !== body) {
+      await github.rest.issues.updateComment({ ...context.repo, comment_id: previous.id, body });
+    }
+  } else {
+    await github.rest.issues.createComment({ ...commentParams, body });
+  }
+
+  await github.rest.pulls.update({ ...params, state: 'closed' });
+  core.setFailed(`Closed PR #${pr.number}: ${reason}`);
+};