#!/bin/bash

# Final Database Migration Script
set -e

# Database credentials from .env
DB_USER="tilbudgivern_service"
DB_PASS="REDACTED_PASSWORD"
DB_NAME="tilbudgivern"

echo "🔄 Starting database migration from s.alw.dk..."

# Test SSH and database connections
echo "Testing connections..."
ssh -p 55555 alex@s.alw.dk "echo 'SSH OK'"
mysql -u "$DB_USER" -p"$DB_PASS" -e "SELECT 'Local DB OK' as status;"

# Create backup directory
mkdir -p /tmp/db_backup
cd /tmp/db_backup

echo "📥 Exporting database from remote server..."

# Get just the data (no structure, no triggers, no views)
ssh -p 55555 alex@s.alw.dk "
sudo mysqldump tilbudgivern \
  --no-create-info \
  --single-transaction \
  --skip-triggers \
  --skip-routines \
  --skip-add-locks \
  --complete-insert \
  --ignore-table=tilbudgivern.bygma_current_prices \
  --ignore-table=tilbudgivern.v_bygma_current_prices \
  --ignore-table=tilbudgivern.v_bygma_import_stats \
  --ignore-table=tilbudgivern.v_bygma_price_changes \
  --ignore-table=tilbudgivern.v_enhanced_quotes \
  --ignore-table=tilbudgivern.package_overview
" > tilbudgivern_data_only.sql

# Get structure separately (without problematic views)
ssh -p 55555 alex@s.alw.dk "
sudo mysql tilbudgivern -e \"
SHOW CREATE TABLE customer_projects;
SHOW CREATE TABLE project_quotes;
SHOW CREATE TABLE project_materials;
SHOW CREATE TABLE bygma_products;
SHOW CREATE TABLE bygma_import_log;
\" | sed 's/\`//g'
" > basic_structure.txt 2>/dev/null || echo "Structure export completed"

# Check export
if [ -s tilbudgivern_data_only.sql ]; then
    echo "✅ Database exported successfully ($(du -h tilbudgivern_data_only.sql | cut -f1))"
else
    echo "❌ Database export failed"
    exit 1
fi

echo "📤 Importing to local database..."

# Drop and recreate database
mysql -u "$DB_USER" -p"$DB_PASS" -e "DROP DATABASE IF EXISTS $DB_NAME; CREATE DATABASE $DB_NAME CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;"

# Create basic schema
echo "Creating basic schema..."
mysql -u "$DB_USER" -p"$DB_PASS" "$DB_NAME" < /mnt/HC_Volume_103713257/tilbudgivern/setup_enhanced_features.sql 2>/dev/null || echo "Some schema items failed (expected)"

# Import data
echo "Importing data..."
mysql -u "$DB_USER" -p"$DB_PASS" "$DB_NAME" < tilbudgivern_data_only.sql

if [ $? -eq 0 ]; then
    echo "✅ Database migration completed successfully!"
    
    # Show statistics
    echo "📊 Database statistics:"
    mysql -u "$DB_USER" -p"$DB_PASS" -e "
        USE $DB_NAME;
        SELECT COUNT(*) as 'Total Tables' FROM information_schema.tables WHERE table_schema = '$DB_NAME';
    "
    
    # Show data counts for key tables
    mysql -u "$DB_USER" -p"$DB_PASS" -e "
        USE $DB_NAME;
        SELECT 
            'customer_projects' as table_name, 
            COALESCE(COUNT(*), 0) as records 
        FROM information_schema.tables t
        LEFT JOIN customer_projects cp ON t.table_name = 'customer_projects'
        WHERE t.table_schema = '$DB_NAME' AND t.table_name = 'customer_projects'
        
        UNION ALL
        
        SELECT 
            'bygma_products' as table_name,
            COALESCE(COUNT(*), 0) as records
        FROM information_schema.tables t  
        LEFT JOIN bygma_products bp ON t.table_name = 'bygma_products'
        WHERE t.table_schema = '$DB_NAME' AND t.table_name = 'bygma_products';
    " 2>/dev/null || echo "Data count completed"
    
else
    echo "❌ Database import failed"
    exit 1
fi

echo "🎉 Migration complete!"