Introduce an option to use the GitHub API to commit changes, for GPG (#391)

* Create tags on GitHub using API

To allow for signed tags to be created,
rather than use the git CLI to push tags,
manually push each tag using the GitHub API,
which will sign the tag using the built-in GitHub GPG key.

* Use ghcommit to push changes

To allow for all commits to be signed,
use the GitHub API to push changes.

* Add changeset version

* Allow tag publish to fail, assume it was manually published

* Add to changeset

* Update @s0/ghcommit

* Update ghcommit to fix missing ref bug

* Make using GitHub API Optional

Change this to a minor version bump,
with a new feature that allows for using the
GitHub API to create tags and commits.

* Use a strategy pattern for GitHub API vs CLI usage

* refactor git interactions

* fix mock thing

* usechangesets pkg

* switch to `commitMode`

---------

Co-authored-by: Mateusz Burzyński <mateuszburzynski@gmail.com>

src/index.ts

@@ -1,8 +1,9 @@
 import * as core from "@actions/core";
 import fs from "fs-extra";
-import * as gitUtils from "./gitUtils";
-import { runPublish, runVersion } from "./run";
+import { Git } from "./git";
+import { setupOctokit } from "./octokit";
 import readChangesetState from "./readChangesetState";
+import { runPublish, runVersion } from "./run";
 
 const getOptionalInput = (name: string) => core.getInput(name) || undefined;
 
@@ -20,11 +21,19 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
     process.chdir(inputCwd);
   }
 
+  const octokit = setupOctokit(githubToken);
+  const commitMode = getOptionalInput("commitMode") ?? "git-cli";
+  if (commitMode !== "git-cli" && commitMode !== "github-api") {
+    core.setFailed(`Invalid commit mode: ${commitMode}`);
+    return;
+  }
+  const git = new Git(commitMode === "github-api" ? octokit : undefined);
+
   let setupGitUser = core.getBooleanInput("setupGitUser");
 
   if (setupGitUser) {
     core.info("setting git user");
-    await gitUtils.setupUser();
+    await git.setupUser();
   }
 
   core.info("setting GitHub credentials");
@@ -48,7 +57,9 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
 
   switch (true) {
     case !hasChangesets && !hasPublishScript:
-      core.info("No changesets present or were removed by merging release PR. Not publishing because no publish script found.");
+      core.info(
+        "No changesets present or were removed by merging release PR. Not publishing because no publish script found."
+      );
       return;
     case !hasChangesets && hasPublishScript: {
       core.info(
@@ -86,7 +97,8 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
 
       const result = await runPublish({
         script: publishScript,
-        githubToken,
+        git,
+        octokit,
         createGithubReleases: core.getBooleanInput("createGithubReleases"),
       });
 
@@ -102,10 +114,12 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
     case hasChangesets && !hasNonEmptyChangesets:
       core.info("All changesets are empty; not creating PR");
       return;
-    case hasChangesets:
+    case hasChangesets: {
+      const octokit = setupOctokit(githubToken);
       const { pullRequestNumber } = await runVersion({
         script: getOptionalInput("version"),
-        githubToken,
+        git,
+        octokit,
         prTitle: getOptionalInput("title"),
         commitMessage: getOptionalInput("commit"),
         hasPublishScript,
@@ -115,6 +129,7 @@ const getOptionalInput = (name: string) => core.getInput(name) || undefined;
       core.setOutput("pullRequestNumber", String(pullRequestNumber));
 
       return;
+    }
   }
 })().catch((err) => {
   core.error(err);