Format release notes as a categorized changelog based on PR labels

.gitea/workflows/ci.yml

@@ -121,11 +121,52 @@ jobs:
           docker push "$IMAGE:$MINOR_TAG"
           docker push "$IMAGE:$VERSION"
 
-          CHANGED_LIST=$(echo "$CHANGED" | tr '\n' ',' | sed 's/,$//' | sed 's/,/, /g')
-          BODY="Automated release. Image: ${IMAGE}:${VERSION}. Changed files: ${CHANGED_LIST}"
+          TRIGGER_MSG=$(git log -1 --format=%s "${{ github.sha }}")
+          PR_NUM=$(echo "$TRIGGER_MSG" | grep -oE '#[0-9]+' | head -1 | tr -d '#')
+
+          CATEGORY="🔧 Maintenance"
+          CHANGE_TITLE="$TRIGGER_MSG"
+
+          if [ -n "$PR_NUM" ]; then
+            PR_JSON=$(curl -s -H "Authorization: token ${{ secrets.CI_PUSH_TOKEN }}" \
+              "https://git.djeex.fr/api/v1/repos/Djeex/adguard-cidre/pulls/$PR_NUM")
+            PR_TITLE=$(echo "$PR_JSON" | jq -r '.title // empty')
+            LABELS=$(echo "$PR_JSON" | jq -r '.labels[].name' 2>/dev/null)
+
+            [ -n "$PR_TITLE" ] && CHANGE_TITLE="$PR_TITLE"
+
+            if echo "$LABELS" | grep -qx 'bug'; then
+              CATEGORY="⚠️ Hotfix"
+            elif echo "$LABELS" | grep -qx 'major'; then
+              CATEGORY="💥 Breaking change"
+            elif echo "$LABELS" | grep -qx 'minor'; then
+              CATEGORY="✨ Update"
+            fi
+          fi
+
+          CHANGED_LIST=$(echo "$CHANGED" | sed 's/^/- /')
+
+          BODY=$(cat <<EOF
+          ## Changelog
+
+          ### ${CATEGORY}
+          ${CHANGE_TITLE}
+
+          **Image:** \`${IMAGE}:${VERSION}\`
+
+          **Changed files:**
+          ${CHANGED_LIST}
+          EOF
+          )
+
+          JSON_PAYLOAD=$(jq -n \
+            --arg tag "$VERSION" \
+            --arg name "$VERSION" \
+            --arg body "$BODY" \
+            '{tag_name: $tag, name: $name, target_commitish: "main", body: $body}')
 
           curl -s -o /dev/null -w "Release API response: %{http_code}\n" -X POST \
             -H "Authorization: token ${{ secrets.CI_PUSH_TOKEN }}" \
             -H "Content-Type: application/json" \
-            -d "{\"tag_name\": \"${VERSION}\", \"name\": \"${VERSION}\", \"target_commitish\": \"main\", \"body\": \"${BODY}\"}" \
+            -d "$JSON_PAYLOAD" \
             "https://git.djeex.fr/api/v1/repos/Djeex/adguard-cidre/releases"