Fine-tune workflow for tag generation on main branch pushes (#141)

* output all test variables

* fix workflow

* fix workflow

* pretty print objects

* fix echo quoting

* fix quotes

* test tags

* clean workflow

* create auto tag on branch pushes instead of PR

* debug bash

* test mutli cmd run

* do use env variable

* cleanup

* verbose output

* fix echo

* fix bash

* another bash check

* unecho

* echo variants

* more echos

* checkout

* check git version

* deepen fetch to find parents

* cleanup

* set correct tag names and job activation conditions

.github/workflows/ci_bundle.yml

@@ -1,28 +1,31 @@
 name: CI_package
 on:
-  pull_request:
-    types:
-      - closed
-    branches:
-      - main
   push:
+    branches:
+      - 'main'
     tags:
       - '*'
 jobs:
   tag-version:
-    if: github.event_name == 'pull_request'
+    if: github.ref_type != 'tag'
     runs-on: ubuntu-latest
     steps:
       - name: checkout ${{ github.head_ref }}
         uses: actions/checkout@v4
         with:
-          ref: ${{ github.head_ref }}
-          fetch-depth: 0
-      - run: git status
-      - run: git rev-parse --abbrev-ref HEAD
+          # default depth is 1, but we need the parent refs
+          fetch-depth: 2
+      - name: compute tag name
+        shell: bash
+        run: |
+          branch=$([[ $(git log --pretty="%p" -n 1 | wc -w) -gt 1 ]] \
+          && echo $(git log -n 1 --pretty="%s" | sed "s|.*Geoportail-Luxembourg/\(.*\)|\1|") \
+          || git branch --show-current)
+          echo $branch
+          echo "AUTO_TAG=${branch}_CI_$(git log -n 1 --pretty=%h)" >> $GITHUB_ENV
       - name: tag ${{ github.head_ref }}
         run: |
-          git tag $(git rev-parse --abbrev-ref HEAD)_CI_$(git rev-parse --short HEAD)
+          git tag ${{ env.AUTO_TAG }}
           git push --tags
   lux-package:
     # the combination (if always) + (needs tag-version) makes sure the lux-package job runs