Function fetchGhPRViewedFiles

packages/shared/pr-github.ts:520–597

(
  runtime: PRRuntime,
  ref: GhPRRef,
)

 * re-review after new commits).
 */
export async function fetchGhPRViewedFiles(
  runtime: PRRuntime,
  ref: GhPRRef,
): Promise<Record<string, boolean>> {
  const query = `
    query($owner: String!, $repo: String!, $number: Int!, $cursor: String) {
      repository(owner: $owner, name: $repo) {
        pullRequest(number: $number) {
          files(first: 100, after: $cursor) {
            nodes {
              path
              viewerViewedState
            }
            pageInfo {
              hasNextPage
              endCursor
            }
          }
        }
      }
    }
  `;

  const result: Record<string, boolean> = {};
  let cursor: string | null = null;

  // Paginate through all files (GitHub returns max 100 per page)
  do {
    const args = hostnameArgs(ref.host, [
      "api", "graphql",
      "-f", `query=${query}`,
      "-F", `owner=${ref.owner}`,
      "-F", `repo=${ref.repo}`,
      "-F", `number=${ref.number}`,
    ]);
    if (cursor) {
      args.push("-F", `cursor=${cursor}`);
    }

    const res = await runtime.runCommand("gh", args);
    if (res.exitCode !== 0) {
      throw new Error(
        `Failed to fetch PR viewed files: ${res.stderr.trim() || `exit code ${res.exitCode}`}`,
      );
    }

    const data = JSON.parse(res.stdout) as {
      data?: {
        repository?: {
          pullRequest?: {
            files?: {
              nodes: Array<{ path: string; viewerViewedState: string }>;
              pageInfo: { hasNextPage: boolean; endCursor: string | null };
            };
          };
        };
      };
      errors?: Array<{ message: string }>;