import { GithubChangeBlob, createBlob } from './createBlob';
import { octokit } from './octokit';

export interface FileChange {
  path: string;
  content: string;
  encoding: 'utf-8' | 'base64';
}

export default async function commitMultipleFiles(
  owner: string,
  repo: string,
  branch: string,
  message: string,
  changes: FileChange[],
  verbose = false,
) {
  const latestCommitSha = (
    await octokit.git.getRef({
      owner,
      repo,
      ref: `heads/${branch}`,
    })
  ).data.object.sha;
  const treeSha = (
    await octokit.git.getCommit({
      owner,
      repo,
      commit_sha: latestCommitSha,
    })
  ).data.tree.sha;
  const blobs: GithubChangeBlob[] = [];

  for (const changeIndexString in changes) {
    const changeIndex = parseInt(changeIndexString);
    const change = changes[changeIndex];
    const createdBlob = await createBlob(owner, repo, change);
    blobs.push(createdBlob!);

    if (verbose) {
      console.log(
        `Created blob ${changeIndex + 1} / ${changes.length} (${(
          (100 * (changeIndex + 1)) /
          changes.length
        ).toFixed(2)}%)`,
      );
    }
  }

  const { data: treeData } = await octokit.git.createTree({
    owner,
    repo,
    base_tree: treeSha,
    tree: blobs,
  });
  const { data: newCommitData } = await octokit.git.createCommit({
    owner,
    repo,
    message,
    tree: treeData.sha,
    parents: [latestCommitSha],
  });
  await octokit.git.updateRef({
    owner,
    repo,
    ref: `heads/${branch}`,
    sha: newCommitData.sha,
  });
}