Function upload

e2e/scripts/pr-media.ts:290–345

(repo: string, localPath: string, mediaPath: string)

/** Commit a file to the media branch via the git database API; returns its raw URL. */
const upload = (repo: string, localPath: string, mediaPath: string): string => {
  const bytes = readFileSync(localPath);
  const request = join(tmpdir(), `pr-media-blob-${process.pid}.json`);
  writeFileSync(request, JSON.stringify({ content: bytes.toString("base64"), encoding: "base64" }));
  const blob = ghJson([`repos/${repo}/git/blobs`, "--method", "POST", "--input", request]) as {
    sha: string;
  };

  // Tip of the media branch, if it exists — the branch is orphan on first use.
  let parent: { commit: string; tree: string } | undefined;
  try {
    const ref = ghJson([`repos/${repo}/git/ref/heads/${MEDIA_BRANCH}`]) as {
      object: { sha: string };
    };
    const commit = ghJson([`repos/${repo}/git/commits/${ref.object.sha}`]) as {
      tree: { sha: string };
    };
    parent = { commit: ref.object.sha, tree: commit.tree.sha };
  } catch {
    parent = undefined;
  }

  writeFileSync(
    request,
    JSON.stringify({
      ...(parent ? { base_tree: parent.tree } : {}),
      tree: [{ path: mediaPath, mode: "100644", type: "blob", sha: blob.sha }],
    }),
  );
  const tree = ghJson([`repos/${repo}/git/trees`, "--method", "POST", "--input", request]) as {
    sha: string;
  };
  writeFileSync(
    request,
    JSON.stringify({
      message: `Add ${mediaPath}`,
      tree: tree.sha,
      parents: parent ? [parent.commit] : [],
    }),
  );
  const commit = ghJson([`repos/${repo}/git/commits`, "--method", "POST", "--input", request]) as {
    sha: string;
  };
  writeFileSync(
    request,
    parent
      ? JSON.stringify({ sha: commit.sha })
      : JSON.stringify({ ref: `refs/heads/${MEDIA_BRANCH}`, sha: commit.sha }),
  );
  ghJson(
    parent
      ? [`repos/${repo}/git/refs/heads/${MEDIA_BRANCH}`, "--method", "PATCH", "--input", request]
      : [`repos/${repo}/git/refs`, "--method", "POST", "--input", request],
  );
  return `https://raw.githubusercontent.com/${repo}/${MEDIA_BRANCH}/${mediaPath}`;
};

const inputs = process.argv.slice(2);