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import * as semver from "https://deno.land/std@0.158.0/semver/mod.ts";import * as commit from "https://deno.land/x/commit@0.1.5/mod.ts";import { intersect } from "https://deno.land/std@0.158.0/collections/intersect.ts";import { Octokit } from "https://cdn.skypack.dev/@octokit/core@4.0.5?dts";
const octokit = new Octokit({ auth: Deno.env.get("GITHUB_TOKEN") });
type CommitTypes = {  major: string[];  minor: string[];  patch: string[];};
type VersioningOptions = {  types: CommitTypes;};
const defaultVersioningOptions: VersioningOptions = {  types: {    major: ["BREAKING"],    minor: ["feat"],    patch: ["fix"],  },};
export async function getLatestRelease(  owner: string,  repo: string,) {  try {    const { data: release } = await octokit.request(      "GET /repos/{owner}/{repo}/releases/latest",      { owner, repo },    );    return release;  } catch {    return undefined;  }}
export async function getCommits(  owner: string,  repo: string,  base?: string,) {  if (base) {    const response = await octokit.request(      "GET /repos/{owner}/{repo}/compare/{base}...{head}",      { owner, repo, base, head: "HEAD" },    );    return response.data.commits.map((entry) => entry.commit);  } else {    const response = await octokit.request(      "GET /repos/{owner}/{repo}/commits",      { owner, repo },    );    return response.data.map((entry) => entry.commit);  }}
export async function getNewVersion(  owner: string,  repo: string,  options: VersioningOptions = defaultVersioningOptions,) {  const release = await getLatestRelease(owner, repo);  const commits = await getCommits(owner, repo, release?.tag_name);
  const version = semver.parse(release?.tag_name ?? "0.0.0");
  if (!version) {    throw new Error(      `The latest release tag ${        release!.tag_name      } does not follow the sementic versioning.`,    );  }
  const types = commits.map((entry) => commit.parse(entry.message).type);  const newVersion = bumpVersion(version, types, options)!;
  return semver.gt(newVersion, version) ? newVersion : null;}
export function bumpVersion(  version: string | semver.SemVer,  types: (commit.Field | undefined)[],  options: VersioningOptions = defaultVersioningOptions,) {  const include = (triggers: string[]) => intersect(types, triggers).length;
  if (semver.major(version) === 0) {    // an unstable version, for which we do not bump the major version.    const triggers = [...options.types.major, ...options.types.minor];    if (include(triggers)) return semver.inc(version, "minor");  } else {    // a stable version.    if (include(options.types.major)) return semver.inc(version, "major");    if (include(options.types.minor)) return semver.inc(version, "minor");  }  if (include(options.types.patch)) return semver.inc(version, "patch");
  return version.toString(); // no version bump.}