#!/bin/bash
# Setup database user and database for custom explorer backend

set -e

echo "=== Setting up Database for Custom Explorer Backend ==="
echo ""

# Check if running as root or with sudo
if [ "$EUID" -ne 0 ]; then
    echo "This script needs sudo privileges to create database user"
    echo "Please run: sudo bash scripts/setup-database.sh"
    exit 1
fi

DB_USER="explorer"
DB_PASSWORD="L@ker\$2010"
DB_NAME="explorer"

echo "Creating database user: $DB_USER"
echo "Creating database: $DB_NAME"
echo ""

# Create user
echo "Creating user..."
sudo -u postgres psql << EOF
DO \$\$
BEGIN
    IF NOT EXISTS (SELECT FROM pg_user WHERE usename = '$DB_USER') THEN
        CREATE USER $DB_USER WITH PASSWORD '$DB_PASSWORD';
        RAISE NOTICE 'User $DB_USER created';
    ELSE
        RAISE NOTICE 'User $DB_USER already exists';
    END IF;
END
\$\$;
EOF

# Create database
echo "Creating database..."
sudo -u postgres psql << EOF
SELECT 'CREATE DATABASE $DB_NAME OWNER $DB_USER'
WHERE NOT EXISTS (SELECT FROM pg_database WHERE datname = '$DB_NAME')\gexec
EOF

# Grant privileges
echo "Granting privileges..."
sudo -u postgres psql -d "$DB_NAME" << EOF
GRANT ALL PRIVILEGES ON DATABASE $DB_NAME TO $DB_USER;
GRANT ALL ON SCHEMA public TO $DB_USER;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON TABLES TO $DB_USER;
ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT ALL ON SEQUENCES TO $DB_USER;
EOF

echo ""
echo "✅ Database setup complete!"
echo ""
echo "Testing connection..."
export PGPASSWORD="$DB_PASSWORD"
if psql -h localhost -U "$DB_USER" -d "$DB_NAME" -c "SELECT 1;" > /dev/null 2>&1; then
    echo "✅ Connection test successful"
else
    echo "❌ Connection test failed"
    echo "Please check PostgreSQL configuration"
fi
unset PGPASSWORD

echo ""
echo "You can now run: bash EXECUTE_DEPLOYMENT.sh"