#!/bin/bash
# Restore script for Delphi Database System

set -e

BACKUP_DIR="/app/backups"
DB_FILE="/app/data/delphi_database.db"

echo "🔄 Starting database restore..."

# Check if backup file is provided
if [ -z "$1" ]; then
    echo "📋 Available backups:"
    ls -la "$BACKUP_DIR"/delphi_backup_*.db 2>/dev/null || echo "   No backups found"
    echo ""
    echo "Usage: $0 <backup_file>"
    echo "Example: $0 delphi_backup_20241207_143000.db"
    exit 1
fi

BACKUP_FILE="$BACKUP_DIR/$1"

# Check if backup file exists
if [ ! -f "$BACKUP_FILE" ]; then
    echo "❌ Backup file not found: $BACKUP_FILE"
    echo "📋 Available backups:"
    ls -la "$BACKUP_DIR"/delphi_backup_*.db 2>/dev/null || echo "   No backups found"
    exit 1
fi

# Create backup of current database before restore
if [ -f "$DB_FILE" ]; then
    TIMESTAMP=$(date +"%Y%m%d_%H%M%S")
    CURRENT_BACKUP="${BACKUP_DIR}/delphi_backup_before_restore_${TIMESTAMP}.db"
    echo "💾 Creating backup of current database..."
    cp "$DB_FILE" "$CURRENT_BACKUP"
    echo "✅ Current database backed up to: $CURRENT_BACKUP"
fi

# Restore database
echo "🔄 Restoring database from: $BACKUP_FILE"
cp "$BACKUP_FILE" "$DB_FILE"

# Verify restore
if [ -f "$DB_FILE" ]; then
    DB_SIZE=$(stat -f%z "$DB_FILE" 2>/dev/null || stat -c%s "$DB_FILE" 2>/dev/null)
    echo "✅ Database restored successfully"
    echo "   File: $DB_FILE"
    echo "   Size: $DB_SIZE bytes"
else
    echo "❌ Restore failed"
    exit 1
fi

echo "🎉 Restore process completed!"
echo "⚠️  Please restart the application to ensure proper database connection."