pipeline {
    agent any

    parameters {
        string(
                name: 'BRANCH',
                defaultValue: 'dev',
                description: 'Ветка для деплоя'
        )

        string(
                name: 'SERVER',
                defaultValue: '92.242.61.23',
                description: 'Сервер для деплоя'
        )
    }

    stages {
        stage('Git pull') {
            steps {
                script {
                    checkout([
                            $class: 'GitSCM',
                            branches: [[name: params.BRANCH]],
                            userRemoteConfigs: [[
                                                        url: 'https://code.3err0.ru/backdev/no-copy.git',
                                                        credentialsId: 'nx-jen'
                                                ]]
                    ])
                }
            }
        }

        stage('Deploy with docker-compose') {
            steps {
                script {
                    withCredentials([
                            usernamePassword(
                                    credentialsId: 'server-root-password',
                                    usernameVariable: 'SSH_USER',
                                    passwordVariable: 'SSH_PASS'
                            )
                    ]) {
                        sh """
                            echo "Deploying branch: ${params.BRANCH}"
                            
                            echo "Copying files to server..."
                            sshpass -p '$SSH_PASS' ssh $SSH_USER@$SERVER "mkdir -p /opt/deployments/${params.BRANCH}"
                            sshpass -p '$SSH_PASS' scp -r ./* $SSH_USER@$SERVER:/opt/deployments/${params.BRANCH}/
                            
                            sshpass -p '$SSH_PASS' ssh $SSH_USER@$SERVER "
                                cd /opt/deployments/${params.BRANCH}
                                
                                echo 'Step 1: Checking current state...'
                                
                                # Смотрим что запущено
                                docker ps --filter 'name=postgres|app-backend' --format 'table {{.Names}}\\t{{.Status}}\\t{{.Ports}}'
                                
                                echo 'Step 2: Stopping only application (keeping DB)...'
                                
                                # Останавливаем только приложение, БД оставляем работать
                                docker stop app-backend 2>/dev/null || echo 'App not running'
                                docker rm app-backend 2>/dev/null || echo 'App not found'
                                
                                # Проверяем что БД работает, если нет - запускаем
                                if ! docker ps | grep -q postgres; then
                                    echo 'Starting PostgreSQL...'
                                    docker-compose up -d db
                                    sleep 10
                                else
                                    echo 'PostgreSQL already running'
                                fi
                                
                                echo 'Step 3: Building new application image...'
                                docker build --no-cache -t app-backend:latest .
                                
                                echo 'Step 4: Starting application...'
                                docker run -d \\
                                  --name app-backend \\
                                  --network app-network \\
                                  -p 80:8080 \\
                                  -e POSTGRES_DB=no_copy_ \\
                                  -e POSTGRES_USER=postgres \\
                                  -e POSTGRES_PASSWORD=postgres \\
                                  -e POSTGRES_PORT=5432 \\
                                  -e POSTGRES_HOST=db \\
                                  --restart unless-stopped \\
                                  app-backend:latest
                                
                                echo 'Step 5: Checking deployment...'
                                sleep 10
                                
                                echo 'Containers status:'
                                docker ps --filter 'name=postgres|app-backend' --format 'table {{.Names}}\\t{{.Status}}\\t{{.Ports}}'
                                
                                echo 'Application logs (last 5 lines):'
                                docker logs --tail=5 app-backend 2>/dev/null || echo 'Logs not available yet'
                                
                                if docker ps | grep -q app-backend; then
                                    echo 'Deployment successful'
                                    echo 'Application URL: http://${params.SERVER}:80'
                                else
                                    echo 'Application failed to start'
                                    docker logs app-backend
                                    exit 1
                                fi
                            "
                        """
                    }
                }
            }
        }
    }

    post {
        success {
            echo "Deployment successful"
            echo "Application URL: http://${params.SERVER}:80"
        }
        failure {
            echo "Deployment failed for branch ${params.BRANCH}"
        }
        always {
            echo "Deployment process finished"
        }
    }
}