#!/usr/bin/env bash
# migrate-from-cpanel.sh — import cPanel WordPress backup into Contabo
# Usage: bash migrate-from-cpanel.sh <backup.tar.gz or SQL dump>
# Run AFTER deploy.sh has the new WP running.
set -euo pipefail

DEPLOY_DIR="/opt/ummah-wordpress"
OLD_URL="https://ummah.falahos.my"
NEW_URL="https://ummah2.falahos.my"
BACKUP_FILE="${1:-}"

if [ -z "$BACKUP_FILE" ]; then
  echo "Usage: $0 <wordpress-backup.tar.gz | database.sql>"
  echo ""
  echo "Export from cPanel:"
  echo "  1. cPanel → Backup Wizard → Full Backup (downloads .tar.gz)"
  echo "  2. OR: cPanel → phpMyAdmin → Export DB as SQL"
  echo "  3. OR: cPanel → File Manager → compress /public_html"
  exit 1
fi

cd "$DEPLOY_DIR"
source .env

EXT="${BACKUP_FILE##*.}"

if [ "$EXT" = "sql" ]; then
  echo "▶ Importing SQL database dump"
  docker compose exec -T db mysql \
    -u ummah_wp -p"$DB_PASSWORD" ummah_wp < "$BACKUP_FILE"

  echo "── Updating URLs ──"
  docker compose run --rm wpcli search-replace "$OLD_URL" "$NEW_URL" \
    --all-tables --report-changed-only

elif [ "$EXT" = "gz" ] || [ "$EXT" = "zip" ]; then
  echo "▶ Extracting backup archive"
  TMP_DIR=$(mktemp -d)
  if [ "$EXT" = "gz" ]; then
    tar -xzf "$BACKUP_FILE" -C "$TMP_DIR"
  else
    unzip -q "$BACKUP_FILE" -d "$TMP_DIR"
  fi

  # Find SQL dump inside archive
  SQL_FILE=$(find "$TMP_DIR" -name "*.sql" | head -1)
  if [ -n "$SQL_FILE" ]; then
    echo "── Importing database: $SQL_FILE ──"
    docker compose exec -T db mysql \
      -u ummah_wp -p"$DB_PASSWORD" ummah_wp < "$SQL_FILE"
    docker compose run --rm wpcli search-replace "$OLD_URL" "$NEW_URL" \
      --all-tables --report-changed-only
  fi

  # Sync wp-content (themes, plugins, uploads)
  WP_CONTENT=$(find "$TMP_DIR" -type d -name "wp-content" | head -1)
  if [ -n "$WP_CONTENT" ]; then
    echo "── Syncing wp-content ──"
    VOLUME_PATH=$(docker volume inspect ummah-wordpress_ummah-wp-data \
      --format '{{.Mountpoint}}')
    rsync -av --exclude="cache" "$WP_CONTENT/" "$VOLUME_PATH/wp-content/"
    docker compose exec wordpress chown -R www-data:www-data /var/www/html/wp-content
  fi

  rm -rf "$TMP_DIR"
else
  echo "❌ Unknown file type: $EXT (expected .sql, .tar.gz, or .zip)"
  exit 1
fi

# ── Post-migration ────────────────────────────────────────────────────────────
echo "── Post-migration cleanup ──"
docker compose run --rm wpcli cache flush
docker compose run --rm wpcli rewrite flush

echo ""
echo "✅ Migration complete. Visit: $NEW_URL"
echo "   Once verified, update DNS: ummah.falahos.my → 13.140.161.244"
echo "   Then run: wp-cli search-replace ummah2.falahos.my ummah.falahos.my --all-tables"