#!/usr/bin/env bash
set -e

echo "== Dropping subscriptions =="

for db in $(psql -Atqc "SELECT datname FROM pg_database WHERE datallowconn AND datname NOT IN ('template1')"); do
  echo "Processing DB: $db"

  SUB="migrate_sub_${db}"

  # Check if subscription exists
  EXISTS=$(psql -d "$db" -Atqc "SELECT 1 FROM pg_subscription WHERE subname = '$SUB'")

  if [ "$EXISTS" = "1" ]; then
    echo "  Found subscription: $SUB"

    # Disable first (good practice)
    psql -d "$db" -c "ALTER SUBSCRIPTION $SUB DISABLE;"

    # Drop it (must be top-level)
    psql -d "$db" -c "DROP SUBSCRIPTION $SUB;"

  else
    echo "  No subscription: $SUB"
  fi

done

echo "== Done =="