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.github/workflows/scripts/revert-latest.sh

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+#!/usr/bin/env bash
+set -euo pipefail
+
+# Overwrite latest with a specific version from R2
+# Usage: ./revert-latest.sh <version>
+
+if [[ $# -ne 1 ]]; then
+  echo "Usage: $0 <version> (e.g., v1.2.3)"
+  exit 1
+fi
+
+VERSION="$1"
+# Ensure version starts with 'v'
+if [[ ! "$VERSION" =~ ^v ]]; then
+  VERSION="v${VERSION}"
+fi
+
+# Validate required environment variables
+: "${R2_ENDPOINT:?R2_ENDPOINT env var is required}"
+: "${R2_BUCKET:?R2_BUCKET env var is required}"
+
+# Clean endpoint URL
+R2_ENDPOINT="$(echo "$R2_ENDPOINT" | tr -d '[:space:]')"
+
+echo "🔄 Reverting latest to version: $VERSION"
+
+# Function to sync with retry logic
+sync_with_retry() {
+  local source_path="$1"
+  local dest_path="$2"
+  local max_retries=3
+
+  for attempt in $(seq 1 $max_retries); do
+    echo "🔄 Attempt $attempt/$max_retries: Syncing $source_path to $dest_path"
+
+    if aws s3 sync "$source_path" "$dest_path" \
+       --endpoint-url "$R2_ENDPOINT" \
+       --profile "${R2_AWS_PROFILE:-R2}" \
+       --no-progress \
+       --delete; then
+      echo "✅ Sync successful from $source_path to $dest_path"
+      return 0
+    else
+      echo "⚠️ Attempt $attempt failed"
+      if [ $attempt -lt $max_retries ]; then
+        delay=$((2 ** attempt))
+        echo "🕐 Waiting ${delay}s before retry..."
+        sleep $delay
+      fi
+    fi
+  done
+
+  echo "❌ All $max_retries attempts failed for syncing to $dest_path"
+  return 1
+}
+
+# Check if the version exists in R2
+echo "🔍 Checking if version $VERSION exists..."
+if ! aws s3 ls "s3://$R2_BUCKET/bifrost/$VERSION/" \
+     --endpoint-url "$R2_ENDPOINT" \
+     --profile "${R2_AWS_PROFILE:-R2}" >/dev/null 2>&1; then
+  echo "❌ Version $VERSION not found in R2 bucket"
+  echo "Available versions:"
+  aws s3 ls "s3://$R2_BUCKET/bifrost/" \
+    --endpoint-url "$R2_ENDPOINT" \
+    --profile "${R2_AWS_PROFILE:-R2}" | grep "PRE v" | awk '{print $2}' | sed 's/\///g' || true
+  exit 1
+fi
+
+echo "✅ Version $VERSION found in R2"
+
+# Sync the specific version to latest
+if ! sync_with_retry "s3://$R2_BUCKET/bifrost/$VERSION/" "s3://$R2_BUCKET/bifrost/latest/"; then
+  exit 1
+fi
+
+echo "🎉 Successfully reverted latest to version $VERSION"