fix: Use GITHUB_REF to retrieve tag before checking the most recent t…

…ag (#238)

* fix: Use GITHUB_REF to retrieve tag before checking the most recent tag (#238)

* Update tests

* Check also tags sorted by creatordate for the current GITHUB_SHA

* fix: Check tags length

Co-authored-by: CrazyMax <crazy-max@users.noreply.github.com>

__tests__/git.test.ts

@@ -1,15 +1,30 @@
 import * as git from '../src/git';
 
 describe('git', () => {
-  it('returns git tag', async () => {
+  it('returns git tag through describe', async () => {
+    process.env.GITHUB_SHA = '309312125ed7a32fcd48f3a1e24dcafe669c186a';
     const tag: string = await git.getTag();
+    console.log(`tag: ${tag}`);
     expect(tag).not.toEqual('');
   });
+  it('returns git tag through GITHUB_SHA', async () => {
+    process.env.GITHUB_SHA = '6e37040623d14330555c7be1603a9182cf92d32a';
+    const tag: string = await git.getTag();
+    console.log(`tag: ${tag}`);
+    expect(tag).toEqual('v1');
+  });
+  it('returns git tag through GITHUB_REF', async () => {
+    process.env.GITHUB_REF = 'refs/tags/v2.2.1';
+    const tag: string = await git.getTag();
+    console.log(`tag: ${tag}`);
+    expect(tag).toEqual('v2.2.1');
+  });
   it('checks if tag is dirty', async () => {
     expect(await git.isTagDirty('v1.3.1')).toBe(true);
   });
   it('returns short commit', async () => {
     const commit: string = await git.getShortCommit();
+    console.log(`commit: ${commit}`);
     expect(commit).not.toEqual('');
   });
 });

__tests__/github.test.ts

@@ -5,6 +5,7 @@ describe('github', () => {
     const release = await github.getRelease('latest');
     expect(release).not.toBeNull();
     expect(release?.tag_name).not.toEqual('');
+    console.log(`tag_name: ${release?.tag_name}`);
   });
   it('returns v0.117.0 GoReleaser GitHub release', async () => {
     const release = await github.getRelease('v0.117.0');

src/git.ts

@@ -11,7 +11,20 @@ const git = async (args: string[] = []): Promise<string> => {
 
 export async function getTag(): Promise<string> {
   try {
-    return await git(['describe', '--tags', '--abbrev=0']);
+    if ((process.env.GITHUB_REF || '').startsWith('refs/tags')) {
+      const tag = (process.env.GITHUB_REF || '').split('/').pop();
+      if (tag !== '' && tag !== undefined) {
+        return tag;
+      }
+    }
+    return await git(['tag', '--points-at', `${process.env.GITHUB_SHA}`, '--sort', '-version:creatordate']).then(
+      tags => {
+        if (tags.length == 0) {
+          return git(['describe', '--tags', '--abbrev=0']);
+        }
+        return tags.split('\n')[0];
+      }
+    );
   } catch (err) {
     return '';
   }