#!/bin/bash
# Database backup script for spotlight.cam
# Usage: ./scripts/backup-db.sh [dev|prod]

set -e

# Default to development if no argument provided
ENV=${1:-dev}

# Configuration
DATE=$(date +%Y%m%d_%H%M%S)
BACKUP_DIR="./backups"

# Create backup directory if it doesn't exist
mkdir -p "$BACKUP_DIR"

# Set container name based on environment
if [ "$ENV" = "prod" ]; then
    DB_CONTAINER="slc-db-prod"
    DB_NAME="spotlightcam"
    BACKUP_FILE="$BACKUP_DIR/backup_prod_$DATE.sql"
else
    DB_CONTAINER="slc-db"
    DB_NAME="spotlightcam"
    BACKUP_FILE="$BACKUP_DIR/backup_dev_$DATE.sql"
fi

echo "🔄 Starting database backup..."
echo "📦 Environment: $ENV"
echo "🗄️  Container: $DB_CONTAINER"
echo "💾 Backup file: $BACKUP_FILE"

# Check if container is running
if ! docker ps --format '{{.Names}}' | grep -q "^${DB_CONTAINER}$"; then
    echo "❌ Error: Container $DB_CONTAINER is not running"
    exit 1
fi

# Create backup
docker exec "$DB_CONTAINER" pg_dump -U spotlightcam "$DB_NAME" > "$BACKUP_FILE"

# Check if backup was successful
if [ $? -eq 0 ]; then
    BACKUP_SIZE=$(du -h "$BACKUP_FILE" | cut -f1)
    echo "✅ Backup completed successfully!"
    echo "📊 Backup size: $BACKUP_SIZE"
    echo "📁 Location: $BACKUP_FILE"
else
    echo "❌ Backup failed!"
    exit 1
fi

# Keep only last 7 days of backups
echo "🧹 Cleaning old backups (keeping last 7 days)..."
find "$BACKUP_DIR" -name "backup_*.sql" -mtime +7 -delete

# Count remaining backups
BACKUP_COUNT=$(find "$BACKUP_DIR" -name "backup_*.sql" | wc -l)
echo "📚 Total backups: $BACKUP_COUNT"

echo "✨ Done!"