feat(scripts): add script to fetch Gitea release assets

- Adds a Bash script to fetch Gitea release metadata and assets
- Supports configurable inputs for URL, token, owner, and repository
- Saves release data and assets to a temporary directory

scripts/fetch-gitea-release.sh

@@ -0,0 +1,57 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# Erwartet: $TAG, $GITEA_URL, $GITEA_TOKEN, $GITEA_OWNER, $GITEA_REPO
+
+if [[ -z "${TAG:-}" ]]; then
+  echo "❌ TAG is not set."
+  exit 1
+fi
+
+# Defaults (können durch INPUT_* oder ENV überschrieben werden)
+GITEA_URL="${INPUT_GITEA_URL:-${GITEA_URL:-https://gitea.example.tld}}"
+GITEA_TOKEN="${INPUT_GITEA_TOKEN:-${GITEA_TOKEN:-}}"
+GITEA_OWNER="${INPUT_GITEA_OWNER:-${GITEA_OWNER:-${GITHUB_REPOSITORY%%/*}}}"
+GITEA_REPO="${INPUT_GITEA_REPO:-${GITEA_REPO:-${GITHUB_REPOSITORY##*/}}}"
+
+# Zielverzeichnis vorbereiten
+OUT_DIR="/tmp/gitea_release_${TAG}"
+mkdir -p "$OUT_DIR/assets"
+
+# Release-ID abrufen
+RELEASE_META=$(curl -sf \
+  -H "Authorization: token $GITEA_TOKEN" \
+  "$GITEA_URL/api/v1/repos/$GITEA_OWNER/$GITEA_REPO/releases/tags/$TAG")
+
+RELEASE_ID=$(echo "$RELEASE_META" | jq -r '.id')
+if [[ -z "$RELEASE_ID" || "$RELEASE_ID" == "null" ]]; then
+  echo "❌ Release '$TAG' nicht gefunden."
+  exit 1
+fi
+
+# Vollständige Release-Details abrufen
+RELEASE_JSON=$(curl -sf \
+  -H "Authorization: token $GITEA_TOKEN" \
+  "$GITEA_URL/api/v1/repos/$GITEA_OWNER/$GITEA_REPO/releases/$RELEASE_ID")
+
+echo "$RELEASE_JSON" > "$OUT_DIR/release.json"
+echo "✅ Metadaten gespeichert unter: $OUT_DIR/release.json"
+
+# Assets herunterladen
+ASSETS=$(echo "$RELEASE_JSON" | jq -c '.assets[]?')
+
+for asset in $ASSETS; do
+  NAME=$(echo "$asset" | jq -r '.name')
+  URL=$(echo "$asset" | jq -r '.browser_download_url')
+
+  echo "⬇ Lade Asset '$NAME' herunter ..."
+  curl -sfL \
+    -H "Authorization: token $GITEA_TOKEN" \
+    "$URL" \
+    -o "$OUT_DIR/assets/$NAME"
+done
+
+echo "GT_RSA_RELEASE_DIR=$OUT_DIR" >> "$GITHUB_ENV"
+
+echo "✅ Alle Assets gespeichert unter: $OUT_DIR/assets"
+echo "✅ Release-Metadaten gespeichert unter: $OUT_DIR/release.json"