delete_old_branches.sh

#!/usr/bin/env bash

# Delete branches older than 365 days

THRESHOLD_DAYS=365

# Use a pipe delimiter to separate fields clearly
git for-each-ref --format='%(committerdate:iso8601)|%(refname:short)' refs/remotes/origin/ | while IFS='|' read -r date branch; do
  # Sanitize branch name
  if [[ "$branch" == "origin/HEAD" ]]; then
    continue
  fi

  branch_name="${branch#origin/}"

  # Convert date string to epoch
  branch_date_sec=$(date -d "$date" +%s 2>/dev/null)
  now_sec=$(date +%s)

  if [[ -z "$branch_date_sec" ]]; then
    echo "⚠️ Skipping invalid date for branch: $branch_name"
    continue
  fi

  age_days=$(( (now_sec - branch_date_sec) / 86400 ))

  if (( age_days > THRESHOLD_DAYS )); then
    echo "🗑 Deleting remote branch: $branch_name (last commit: $date, $age_days days old)"
    git push origin --delete "$branch_name"
  else
    echo "✅ Keeping $branch_name (last commit: $date, $age_days days old)"
  fi
done