Create workflow to build CSS releases

.forgejo/workflows/build-and-release.yaml

@@ -0,0 +1,44 @@
+name: Build and release
+
+on:
+  push:
+    branches: [master]
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Install lessc
+        run: npm install -g less
+
+      - name: Check out repository
+        uses: actions/checkout@v3
+
+      - name: Parse commit hash
+        run: echo "RELEASE_TAG=$(git rev-parse --short ${{ github.sha }})" >> $GITHUB_ENV
+
+      - name: Build CSS
+        run: |
+          mkdir dist
+          ./build.sh
+          tar -C dist -cvf themes.tar .
+          mv themes.tar dist
+        id: build
+
+      - name: Publish release
+        uses: actions/forgejo-release@v1
+        with:
+          direction: upload
+          release-dir: dist
+          token: ${{ github.token }}
+          tag: $RELEASE_TAG
+          release-notes: |
+            Automatic release triggered by commit ${{ github.sha }}
+
+            Add the following to \`app.ini\`:
+            \`\`\`ini
+            [ui]
+            THEMES = ${{ steps.build.outputs.themes }}
+            \`\`\`
+
+            And download the CSS files from this release to \`\$GITEA_DATA_DIR/gitea/public/css\`. [\`themes.tar\`](/Lea/gitea-themes/releases/download/$RELEASE_TAG/themes.tar) contains all CSS files for convenience.

build.sh

@@ -3,12 +3,19 @@
 BASEDIR="$( cd "$( dirname "$0" )" && pwd )"
 cd "${BASEDIR}"
 
+theme_list=""
+
 for theme in edge gruvbox gruvbox-material everforest; do
     for variant in dark light auto; do
+        theme_list="$theme_list,$theme-$variant"
         lessc -x "src/${theme}-${variant}.less" > "dist/theme-${theme}-${variant}.css"
     done
 done
 
 for theme in nord palenight soft-era sonokai sonokai-andromeda sonokai-atlantis sonokai-espresso sonokai-maia sonokai-shusia; do
+        theme_list="$theme_list,$theme"
     lessc -x "src/${theme}.less" > "dist/theme-${theme}.css"
 done
+
+# First character in theme_list will be a comma, let's remove that
+echo "themes=${theme_list:1}" >> $GITHUB_OUTPUT