#!/bin/bash

# Configuration
CONTAINER_NAME="ckb-mysql-dev"
DB_NAME="ckb_db"
DB_USER="root"
DB_PASSWORD="root"
BACKUP_DIR="./backups"
DATE=$(date +%Y%m%d_%H%M%S)
BACKUP_FILE="ckb_backup_${DATE}.sql"

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

# Check if container is running
if ! docker ps | grep -q $CONTAINER_NAME; then
    echo "Error: Container $CONTAINER_NAME is not running!"
    exit 1
fi

echo "Starting database backup..."
echo "Container: $CONTAINER_NAME"
echo "Database: $DB_NAME"
echo "Backup file: $BACKUP_DIR/$BACKUP_FILE"

# Create backup
if docker exec $CONTAINER_NAME mysqldump -u $DB_USER -p$DB_PASSWORD $DB_NAME > "$BACKUP_DIR/$BACKUP_FILE"; then
    echo "✅ Backup completed successfully!"
    echo "📁 File saved: $BACKUP_DIR/$BACKUP_FILE"
    
    # Show file size
    FILE_SIZE=$(du -h "$BACKUP_DIR/$BACKUP_FILE" | cut -f1)
    echo "📊 File size: $FILE_SIZE"
    
    # Optional: Compress the backup
    read -p "Do you want to compress the backup? (y/n): " -n 1 -r
    echo
    if [[ $REPLY =~ ^[Yy]$ ]]; then
        gzip "$BACKUP_DIR/$BACKUP_FILE"
        echo "🗜️ Backup compressed: $BACKUP_DIR/$BACKUP_FILE.gz"
    fi
    
else
    echo "❌ Backup failed!"
    exit 1
fi

echo "🎉 Backup process completed!"