pipeline {
    agent any

    parameters {
        booleanParam(
            name: 'FORCE_INFRASTRUCTURE_DEPLOY',
            defaultValue: false,
            description: 'Force infrastructure deployment regardless of change detection'
        )
        booleanParam(
            name: 'SKIP_QUALITY_GATES',
            defaultValue: false,
            description: 'Skip SonarQube quality gates (use with caution)'
        )
    }

    environment {
        // Core configuration
        GITEA_REPO = 'https://code.jacquesingram.online/lenape/nvhi-atsila-microservice.git '
        GITEA_CREDS = '52ee0829-6e65-4951-925b-4186254c3f21'
        SONAR_HOST = 'https://sonar.jacquesingram.online '
        SONAR_TOKEN = credentials('sonar-token')
        // AWS configuration with ECR
        AWS_CRED_ID = 'aws-ci'
        AWS_ACCOUNT_ID = credentials('AWS_ACCOUNT_ID')
        AWS_REGION = 'us-east-2'
        ECR_REPO = 'nvhi-atsila-microservice'
        // Backend configuration
        TF_BACKEND_BUCKET = 'nvhi-atsila-tf-state'
        TF_BACKEND_PREFIX = 'ecs/terraform.tfstate'
        TF_DDB_TABLE = 'nvhi-atsila-locks'
        // Application variables
        TF_VAR_cluster_name = 'nvhi-atsila-cluster'
        TF_VAR_vpc_cidr = '10.0.0.0/16'
        TF_VAR_public_subnets = '10.0.1.0/24,10.0.2.0/24'
        TF_VAR_instance_type = 't2.micro'
        TF_VAR_key_pair_name = 'nvhi-atsila-deployer'
        TF_VAR_jenkins_ip_cidr = "0.0.0.0/0" // For demo; tighten in production
        TF_VAR_aws_region = "${AWS_REGION}"
        // Enhanced deployment tracking
        IMAGE_TAG = "v1.0.${BUILD_NUMBER}"
        DEPLOYMENT_TYPE = "APPLICATION"
        // Enterprise settings
        TF_IN_AUTOMATION = 'true'
        TF_INPUT = 'false'
    }

    stages {
        stage('Debug: Show File Structure') {
            steps {
                echo "📂 Current directory contents:"
                sh 'ls -la'
                echo "🔍 Full file tree:"
                sh 'find . -type f | sort'
            }
        }

        stage('Bootstrap Terraform Backend') {
            steps {
                script {
                    def tfBackendDir = "terraform-backend"

                    echo "🔐 Using Jenkins credentials to authenticate with AWS"
                    withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                        echo "🔄 Checking/Bootstrapping Terraform backend..."
                        dir(tfBackendDir) {
                            def exitCode = sh(
                                script: """
                                    terraform init \\
                                        -var="aws_region=${TF_VAR_aws_region}" \\
                                        -var="backend_bucket_name=${TF_BACKEND_BUCKET}" \\
                                        -var="lock_table_name=${TF_DDB_TABLE}"
                                    terraform apply -auto-approve \\
                                        -var="aws_region=${TF_VAR_aws_region}" \\
                                        -var="backend_bucket_name=${TF_BACKEND_BUCKET}" \\
                                        -var="lock_table_name=${TF_DDB_TABLE}"
                                """,
                                returnStatus: true
                            )
                            
                            if (exitCode == 0) {
                                echo "✅ Terraform backend created successfully"
                            } else {
                                echo "⚠️ Terraform apply failed, checking if resources already exist..."
                                def bucketExists = sh(
                                    script: "aws s3api head-bucket --bucket ${TF_BACKEND_BUCKET} --region ${TF_VAR_aws_region} 2>/dev/null",
                                    returnStatus: true
                                ) == 0
                                def tableExists = sh(
                                    script: "aws dynamodb describe-table --table-name ${TF_DDB_TABLE} --region ${TF_VAR_aws_region} 2>/dev/null",
                                    returnStatus: true
                                ) == 0
                                
                                if (bucketExists && tableExists) {
                                    echo "✅ Terraform backend already exists - continuing..."
                                } else {
                                    echo "❌ Backend bootstrap failed and resources don't exist:"
                                    echo "   S3 Bucket exists: ${bucketExists}"
                                    echo "   DynamoDB Table exists: ${tableExists}"
                                    error("Manual intervention required.")
                                }
                            }
                        }
                    }
                }
            }
        }

        stage('Security Assessment & Checkout') {
            steps {
                checkout scm
                script {
                    def infrastructureFiles = sh(
                        script: '''
                            if git rev-parse HEAD~1 >/dev/null 2>&1; then
                                git diff --name-only HEAD~1 2>/dev/null | grep -E "^terraform/" || echo "none"
                            else
                                echo "initial"
                            fi
                        ''',
                        returnStdout: true
                    ).trim()

                    // Check force parameter first - this overrides everything
                    if (params.FORCE_INFRASTRUCTURE_DEPLOY) {
                        env.DEPLOYMENT_TYPE = "INFRASTRUCTURE"
                        currentBuild.displayName = "INFRASTRUCTURE-FORCED-${BUILD_NUMBER}"
                        echo "🚨 FORCED: Infrastructure deployment requested via parameter"
                        echo "✅ Deployment type set to: INFRASTRUCTURE (forced)"
                    } else if (infrastructureFiles == "initial") {
                        env.DEPLOYMENT_TYPE = "INFRASTRUCTURE"
                        echo "✅ First run detected. Deploying infrastructure."
                    } else if (infrastructureFiles != "none") {
                        env.DEPLOYMENT_TYPE = "INFRASTRUCTURE"
                        echo "🚨 SECURITY NOTICE: Infrastructure changes detected - elevated permissions required"
                        echo "   Changed files: ${infrastructureFiles}"
                    } else {
                        // Check if infrastructure actually exists in AWS
                        def clusterExists = false
                        try {
                            withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                                def clusterCheck = sh(
                                    script: "aws ecs describe-clusters --clusters ${TF_VAR_cluster_name} --region ${AWS_REGION} --query 'clusters[0].status' --output text 2>/dev/null || echo 'NOTFOUND'",
                                    returnStdout: true
                                ).trim()
                                clusterExists = (clusterCheck == "ACTIVE")
                            }
                        } catch (Exception e) {
                            echo "⚠️ Could not check cluster status: ${e.getMessage()}"
                        }
                        
                        if (!clusterExists) {
                            env.DEPLOYMENT_TYPE = "INFRASTRUCTURE"
                            echo "🚨 CLEAN AWS DETECTED: No existing infrastructure found - deploying from scratch"
                        } else {
                            env.DEPLOYMENT_TYPE = "APPLICATION"
                            echo "✅ SECURITY: Application-only deployment - using restricted permissions"
                        }
                    }

                    def gitCommit = sh(script: 'git rev-parse HEAD', returnStdout: true).trim()
                    def gitAuthor = sh(script: 'git log -1 --pretty=format:"%an"', returnStdout: true).trim()
                    currentBuild.description = "${env.DEPLOYMENT_TYPE} | ${env.IMAGE_TAG} | ${gitCommit.take(8)}"
                    echo "📋 SECURITY AUDIT TRAIL:"
                    echo "   • Deployment Type: ${env.DEPLOYMENT_TYPE}"
                    echo "   • Version: ${env.IMAGE_TAG}"
                    echo "   • Commit: ${gitCommit.take(8)}"
                    echo "   • Author: ${gitAuthor}"
                    echo "   • Container Registry: ECR (AWS-native, secure)"
                    echo "   • Architecture: SSM-based ECS access (secure, keyless)"
                    echo "   • Security Model: Principle of Least Privilege"
                    echo "   • Timestamp: ${new Date()}"
                    echo "🔄 DEPLOYMENT TYPE CONFIRMATION: ${env.DEPLOYMENT_TYPE}"

                    writeFile file: 'deployment-audit.json', text: """{
                        "build_number": "${BUILD_NUMBER}",
                        "deployment_type": "${env.DEPLOYMENT_TYPE}",
                        "image_tag": "${env.IMAGE_TAG}",
                        "git_commit": "${gitCommit}",
                        "git_author": "${gitAuthor}",
                        "infrastructure_files_changed": "${infrastructureFiles}",
                        "container_registry": "ECR",
                        "architecture": "ssm_based_ecs_access",
                        "security_model": "principle_of_least_privilege",
                        "timestamp": "${new Date()}"
                    }"""
                    archiveArtifacts artifacts: 'deployment-audit.json', fingerprint: true
                }
            }
        }

        stage('Security & Quality Checks') {
            parallel {
                stage('SonarQube Security Analysis') {
                    when {
                        expression { !params.SKIP_QUALITY_GATES }
                    }
                    steps {
                        script {
                            def scannerHome = tool 'SonarQubeScanner'
                            withSonarQubeEnv('SonarQube') {
                                sh """
                                    echo "🔒 SECURITY: Running SonarQube security analysis..."
                                    ${scannerHome}/bin/sonar-scanner \\
                                      -Dsonar.projectKey=nvhi-atsila-microservice \\
                                      -Dsonar.sources=. \\
                                      -Dsonar.projectVersion=${BUILD_NUMBER} \\
                                      -Dsonar.login=${SONAR_TOKEN}
                                """
                            }
                            echo "✅ SECURITY: Code quality and security scan completed"
                        }
                    }
                }
                stage('Terraform Security Validation') {
                    steps {
                        script {
                            echo "🔒 SECURITY: Running Terraform security and validation checks..."
                            sh '''
                                echo "Validating Terraform configuration..."
                                cd terraform && terraform init -backend=false
                                terraform validate
                                echo "✅ Terraform validation passed"
                                echo "🔒 SECURITY: Checking infrastructure security compliance..."
                                grep -r "encrypted.*true" . --include="*.tf" && echo "✅ Encryption policies found" || echo "⚠️ Review encryption settings"
                                echo "🔒 SECURITY: Checking for open security groups..."
                                if grep -r "0.0.0.0/0" . --include="*.tf" --exclude-dir=".terraform" | grep -v "# Approved:"; then
                                    echo "⚠️ Review open access rules found"
                                else
                                    echo "✅ No unauthorized open access rules"
                                fi
                            '''
                            echo "✅ SECURITY: Infrastructure validation and security checks passed"
                        }
                    }
                }
            }
        }

        stage('Secure Container Build & Registry') {
            steps {
                withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                    script {
                        echo "🔐 SECURITY: Using ECR for secure, AWS-native container registry"
                        
                        // Create ECR repository if it doesn't exist
                        echo "🔍 Checking/Creating ECR repository..."
                        sh """
                            if ! aws ecr describe-repositories --repository-names ${ECR_REPO} --region ${AWS_REGION} 2>/dev/null; then
                                echo "📦 Creating ECR repository: ${ECR_REPO}"
                                aws ecr create-repository --repository-name ${ECR_REPO} --region ${AWS_REGION}
                                echo "✅ ECR repository created successfully"
                            else
                                echo "✅ ECR repository already exists"
                            fi
                        """
                        
                        sh """
                            echo "🔐 Authenticating with ECR using temporary credentials..."
                            aws ecr get-login-password --region ${AWS_REGION} | docker login --username AWS --password-stdin ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com
                        """
                        echo "🐳 Building secure container with metadata..."
                        sh """
                            docker build -t ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:${IMAGE_TAG} .
                            docker push ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:${IMAGE_TAG}
                            docker tag ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:${IMAGE_TAG} ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:latest
                            docker push ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:latest
                        """
                        echo "✅ SECURITY: Container built and pushed to ECR successfully"
                        echo "   Image: ${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:${IMAGE_TAG}"
                        echo "   Registry: ECR (AWS-native, IAM-secured)"
                    }
                }
            }
        }

        stage('Infrastructure Readiness Check') {
            steps {
                withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                    script {
                        echo "🔍 SECURITY: Checking if infrastructure is ready for deployment..."
                        echo "🔍 Current deployment type: ${env.DEPLOYMENT_TYPE}"
                        
                        // Only check readiness if deployment type is APPLICATION
                        if (env.DEPLOYMENT_TYPE == "APPLICATION") {
                            def serviceExists = sh(
                                script: """
                                    aws ecs describe-services --cluster ${TF_VAR_cluster_name} --services ${TF_VAR_cluster_name}-service --region ${AWS_REGION} 2>/dev/null | grep -q 'ACTIVE' && echo 'true' || echo 'false'
                                """,
                                returnStdout: true
                            ).trim()
                            def instanceCount = sh(
                                script: """
                                    aws ecs list-container-instances --cluster ${TF_VAR_cluster_name} --region ${AWS_REGION} --query 'length(containerInstanceArns)' --output text 2>/dev/null || echo '0'
                                """,
                                returnStdout: true
                            ).trim()
                            
                            echo "🔍 Service Exists: ${serviceExists}"
                            echo "🔍 Container Instances: ${instanceCount}"
                            
                            if (serviceExists == "false" || instanceCount == "0" || instanceCount == "null") {
                                echo "🚨 SECURITY NOTICE: Infrastructure not ready - forcing deployment"
                                env.DEPLOYMENT_TYPE = "INFRASTRUCTURE"
                                currentBuild.description = "INFRASTRUCTURE (auto-detected) | ${env.IMAGE_TAG}"
                                echo "✅ Changed deployment type to: ${env.DEPLOYMENT_TYPE}"
                            }
                        } else {
                            echo "✅ Infrastructure deployment already forced - skipping readiness check"
                        }
                        
                        echo "📋 SECURITY: Infrastructure readiness assessment completed"
                        echo "   Final Deployment Type: ${env.DEPLOYMENT_TYPE}"
                    }
                }
            }
        }

        stage('Deploy Infrastructure') {
            when {
                expression { env.DEPLOYMENT_TYPE == "INFRASTRUCTURE" }
            }
            steps {
                withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                    dir('terraform') {
                        script {
                            echo "🔍 DEPLOYMENT: Deployment type is ${env.DEPLOYMENT_TYPE}"
                            echo "🚨 SECURITY NOTICE: Infrastructure deployment requested"
                            echo "🏗️ ARCHITECTURE: Deploying ECS Cluster with SSM access (secure, keyless)"
                            echo "🔐 In production: This would require infrastructure-admin role"
                            echo "🚀 Attempting infrastructure deployment..."
                            sh """
                                echo "🔄 Initializing Terraform with remote backend..."
                                terraform init \\
                                    -backend-config="bucket=${TF_BACKEND_BUCKET}" \\
                                    -backend-config="key=${TF_BACKEND_PREFIX}" \\
                                    -backend-config="region=${AWS_REGION}" \\
                                    -backend-config="dynamodb_table=${TF_DDB_TABLE}"
                                
                                echo "🔄 Planning infrastructure changes..."
                                terraform plan \\
                                    -var="cluster_name=${TF_VAR_cluster_name}" \\
                                    -var="vpc_cidr=${TF_VAR_vpc_cidr}" \\
                                    -var="public_subnets=${TF_VAR_public_subnets}" \\
                                    -var="instance_type=${TF_VAR_instance_type}" \\
                                    -var="key_pair_name=${TF_VAR_key_pair_name}" \\
                                    -var="jenkins_ip_cidr=${TF_VAR_jenkins_ip_cidr}" \\
                                    -var="aws_region=${TF_VAR_aws_region}"
                                
                                echo "🔄 Applying infrastructure changes..."
                                terraform apply -auto-approve \\
                                    -var="cluster_name=${TF_VAR_cluster_name}" \\
                                    -var="vpc_cidr=${TF_VAR_vpc_cidr}" \\
                                    -var="public_subnets=${TF_VAR_public_subnets}" \\
                                    -var="instance_type=${TF_VAR_instance_type}" \\
                                    -var="key_pair_name=${TF_VAR_key_pair_name}" \\
                                    -var="jenkins_ip_cidr=${TF_VAR_jenkins_ip_cidr}" \\
                                    -var="aws_region=${TF_VAR_aws_region}"
                            """
                            echo "✅ SECURITY: Infrastructure deployment completed with compliance verification"
                        }
                    }
                }
            }
        }

        stage('Wait for ECS Agents') {
            when {
                expression { env.DEPLOYMENT_TYPE == "INFRASTRUCTURE" }
            }
            steps {
                withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                    script {
                        echo "⏳ Waiting for ECS agents to register with cluster..."
                        timeout(time: 10, unit: 'MINUTES') {
                            waitUntil {
                                def count = sh(
                                    script: """
                                        aws ecs list-container-instances --cluster ${TF_VAR_cluster_name} --region ${AWS_REGION} --query 'length(containerInstanceArns)' --output text 2>/dev/null || echo '0'
                                    """,
                                    returnStdout: true
                                ).trim()
                                if (count != "0" && count != "null") {
                                    echo "✅ ECS agents registered: ${count} instance(s)"
                                    def activeCount = sh(
                                        script: """
                                            aws ecs describe-container-instances --cluster ${TF_VAR_cluster_name} --container-instances \$(aws ecs list-container-instances --cluster ${TF_VAR_cluster_name} --region ${AWS_REGION} --query 'containerInstanceArns[*]' --output text) --region ${AWS_REGION} --query 'length(containerInstances[?status==\\`ACTIVE\\`])' --output text 2>/dev/null || echo '0'
                                        """,
                                        returnStdout: true
                                    ).trim()
                                    if (activeCount != "0" && activeCount != "null") {
                                        echo "✅ Active ECS instances: ${activeCount}"
                                        return true
                                    } else {
                                        echo "⏳ Waiting for instances to become ACTIVE..."
                                        sleep(20)
                                        return false
                                    }
                                } else {
                                    echo "⏳ No ECS agents registered yet..."
                                    sleep(20)
                                    return false
                                }
                            }
                        }
                    }
                }
            }
        }

        stage('Configure & Deploy Application') {
            parallel {
                stage('Configure EC2 Instance via SSM') {
                    when {
                        expression {
                            def hasInstances = false
                            try {
                                def instanceId = sh(
                                    script: """
                                        cd terraform && terraform output -raw ecs_instance_id 2>/dev/null || echo ''
                                    """,
                                    returnStdout: true
                                ).trim()
                                hasInstances = (instanceId != "" && instanceId != "null")
                            } catch (Exception e) {
                                echo "⚠️ No instances to configure: ${e.getMessage()}"
                            }
                            return hasInstances
                        }
                    }
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                            script {
                                echo "🔧 ENTERPRISE: Configuring EC2 instance via SSM (no SSH required)"
                                def instanceId = ""
                                def ec2_ip = ""
                                try {
                                    sh "test -d terraform || (echo 'Terraform directory not found' && exit 1)"
                                    instanceId = sh(
                                        script: """
                                            cd terraform && terraform output -raw ecs_instance_id
                                        """,
                                        returnStdout: true
                                    ).trim()
                                    ec2_ip = sh(
                                        script: """
                                            cd terraform && terraform output -raw ecs_instance_public_ip
                                        """,
                                        returnStdout: true
                                    ).trim()
                                } catch (Exception e) {
                                    echo "⚠️ Could not get instance details: ${e.getMessage()}"
                                    echo "⚠️ Skipping SSM configuration - no instances available"
                                    return
                                }
                                echo "📍 Target Instance: ${instanceId} (${ec2_ip})"
                                echo "⏳ Waiting for SSM agent to be ready..."
                                timeout(time: 10, unit: 'MINUTES') {
                                    waitUntil {
                                        def ssmStatus = sh(
                                            script: """
                                                aws ssm describe-instance-information --filters "Key=InstanceIds,Values=${instanceId}" --region ${AWS_REGION} --query 'InstanceInformationList[0].PingStatus' --output text 2>/dev/null || echo 'Offline'
                                            """,
                                            returnStdout: true
                                        ).trim()
                                        if (ssmStatus == "Online") {
                                            echo "✅ SSM agent is online"
                                            return true
                                        } else {
                                            echo "⏳ SSM agent status: ${ssmStatus}, waiting..."
                                            sleep(30)
                                            return false
                                        }
                                    }
                                }
                                
                                echo "🔧 Running configuration commands via SSM..."
                                sh """
                                    # Install or update Docker if needed
                                    aws ssm send-command \\
                                        --instance-ids ${instanceId} \\
                                        --document-name "AWS-RunShellScript" \\
                                        --parameters 'commands=["sudo yum update -y && sudo yum install -y docker && sudo systemctl start docker && sudo systemctl enable docker"]' \\
                                        --region ${AWS_REGION} \\
                                        --comment "Installing Docker on ECS instance"
                                    
                                    # Wait for command to complete
                                    sleep 60
                                    
                                    # Configure ECS agent
                                    aws ssm send-command \\
                                        --instance-ids ${instanceId} \\
                                        --document-name "AWS-RunShellScript" \\
                                        --parameters 'commands=["echo ECS_CLUSTER=${TF_VAR_cluster_name} | sudo tee -a /etc/ecs/ecs.config","sudo systemctl restart ecs"]' \\
                                        --region ${AWS_REGION} \\
                                        --comment "Configuring ECS agent"
                                """
                                echo "✅ ENTERPRISE: EC2 instance configured via SSM"
                            }
                        }
                    }
                }
                
                stage('Deploy ECS Service') {
                    steps {
                        withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                            script {
                                echo "🚀 DEPLOYMENT: Deploying application to ECS cluster"
                                
                                // Create task definition
                                def executionRoleArn = ""
                                try {
                                    executionRoleArn = sh(
                                        script: 'cd terraform && terraform output -raw ecs_task_execution_role_arn',
                                        returnStdout: true
                                    ).trim()
                                } catch (Exception e) {
                                    echo "⚠️ Could not get execution role ARN: ${e.getMessage()}"
                                    echo "⚠️ Task definition will be created without execution role"
                                }
                                
                                def taskDefinition = """
                                {
                                    "family": "${TF_VAR_cluster_name}-task",
                                    "networkMode": "bridge",
                                    "requiresCompatibilities": ["EC2"],
                                    "memory": "512",
                                    "cpu": "256"${executionRoleArn ? ",\n                                    \"executionRoleArn\": \"${executionRoleArn}\"" : ""},
                                    "containerDefinitions": [
                                        {
                                            "name": "${ECR_REPO}",
                                            "image": "${AWS_ACCOUNT_ID}.dkr.ecr.${AWS_REGION}.amazonaws.com/${ECR_REPO}:${IMAGE_TAG}",
                                            "memory": 512,
                                            "cpu": 256,
                                            "essential": true,
                                            "portMappings": [
                                                {
                                                    "containerPort": 8080,
                                                    "hostPort": 8080,
                                                    "protocol": "tcp"
                                                }
                                            ],
                                            "healthCheck": {
                                                "command": ["CMD-SHELL", "curl -f http://localhost:8080/health || exit 1"],
                                                "interval": 30,
                                                "timeout": 5,
                                                "retries": 3,
                                                "startPeriod": 60
                                            },
                                            "logConfiguration": {
                                                "logDriver": "awslogs",
                                                "options": {
                                                    "awslogs-group": "/ecs/${TF_VAR_cluster_name}",
                                                    "awslogs-region": "${AWS_REGION}",
                                                    "awslogs-stream-prefix": "ecs"
                                                }
                                            }
                                        }
                                    ]
                                }
                                """
                                
                                writeFile file: 'task-definition.json', text: taskDefinition
                                
                                sh """
                                    # Create CloudWatch log group if it doesn't exist
                                    aws logs create-log-group --log-group-name /ecs/${TF_VAR_cluster_name} --region ${AWS_REGION} || echo "Log group already exists"
                                    
                                    # Register task definition
                                    aws ecs register-task-definition \\
                                        --cli-input-json file://task-definition.json \\
                                        --region ${AWS_REGION}
                                    
                                    # Check if service exists
                                    if aws ecs describe-services --cluster ${TF_VAR_cluster_name} --services ${TF_VAR_cluster_name}-service --region ${AWS_REGION} --query 'services[0].status' --output text 2>/dev/null | grep -q 'ACTIVE'; then
                                        echo "✅ Service exists, updating..."
                                        aws ecs update-service \\
                                            --cluster ${TF_VAR_cluster_name} \\
                                            --service ${TF_VAR_cluster_name}-service \\
                                            --task-definition ${TF_VAR_cluster_name}-task \\
                                            --desired-count 1 \\
                                            --force-new-deployment \\
                                            --region ${AWS_REGION}
                                    else
                                        echo "✅ Creating new service..."
                                        aws ecs create-service \\
                                            --cluster ${TF_VAR_cluster_name} \\
                                            --service-name ${TF_VAR_cluster_name}-service \\
                                            --task-definition ${TF_VAR_cluster_name}-task \\
                                            --desired-count 1 \\
                                            --region ${AWS_REGION}
                                    fi
                                """
                                
                                echo "✅ DEPLOYMENT: ECS service deployment initiated"
                            }
                        }
                    }
                }
            }
        }
        
        stage('Verify Deployment') {
            steps {
                withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                    script {
                        echo "🔍 VERIFICATION: Checking deployment status..."
                        
                        timeout(time: 15, unit: 'MINUTES') {
                            waitUntil {
                                def serviceStatus = sh(
                                    script: """
                                        aws ecs describe-services \\
                                            --cluster ${TF_VAR_cluster_name} \\
                                            --services ${TF_VAR_cluster_name}-service \\
                                            --region ${AWS_REGION} \\
                                            --query 'services[0].deployments[0].status' \\
                                            --output text 2>/dev/null || echo 'UNKNOWN'
                                    """,
                                    returnStdout: true
                                ).trim()
                                
                                def runningCount = sh(
                                    script: """
                                        aws ecs describe-services \\
                                            --cluster ${TF_VAR_cluster_name} \\
                                            --services ${TF_VAR_cluster_name}-service \\
                                            --region ${AWS_REGION} \\
                                            --query 'services[0].runningCount' \\
                                            --output text 2>/dev/null || echo '0'
                                    """,
                                    returnStdout: true
                                ).trim()
                                
                                echo "Service Status: ${serviceStatus}, Running Tasks: ${runningCount}"
                                
                                if (serviceStatus == "STEADY" && runningCount.toInteger() > 0) {
                                    echo "✅ Service deployment completed successfully"
                                    return true
                                } else {
                                    echo "⏳ Waiting for service to stabilize..."
                                    sleep(30)
                                    return false
                                }
                            }
                        }
                        
                        // Get application URL
                        def appUrl = ""
                        try {
                            appUrl = sh(
                                script: """
                                    cd terraform && terraform output -raw ecs_instance_public_ip 2>/dev/null || echo 'unavailable'
                                """,
                                returnStdout: true
                            ).trim()
                            
                            if (appUrl != "unavailable" && appUrl != "") {
                                echo "🌐 APPLICATION URL: http://${appUrl}:8080"
                                currentBuild.description = "${currentBuild.description} | URL: http://${appUrl}:8080"
                            }
                        } catch (Exception e) {
                            echo "⚠️ Could not determine application URL: ${e.getMessage()}"
                        }
                        
                        echo "✅ VERIFICATION: Deployment verification completed"
                    }
                }
            }
        }
    }
    
    post {
        always {
            script {
                echo "🧹 CLEANUP: Performing post-build cleanup..."
                
                // Archive deployment artifacts
                try {
                    archiveArtifacts artifacts: 'deployment-audit.json,task-definition.json', allowEmptyArchive: true
                } catch (Exception e) {
                    echo "⚠️ Could not archive artifacts: ${e.getMessage()}"
                }
                
                // Clean up Docker images to save space
                sh '''
                    echo "🧹 Cleaning up Docker images..."
                    docker system prune -f || echo "Docker cleanup failed"
                '''
                
                echo "📊 SUMMARY: Build completed"
                echo "   Build Number: ${BUILD_NUMBER}"
                echo "   Image Tag: ${IMAGE_TAG}"
                echo "   Deployment Type: ${env.DEPLOYMENT_TYPE}"
                echo "   Status: ${currentBuild.currentResult}"
            }
        }
        
        success {
            script {
                echo "🎉 SUCCESS: Deployment completed successfully!"
                echo "   Version ${IMAGE_TAG} deployed to ECS cluster ${TF_VAR_cluster_name}"
                
                // Get application URL for success message
                def appUrl = ""
                try {
                    appUrl = sh(
                        script: "cd terraform && terraform output -raw ecs_instance_public_ip 2>/dev/null || echo 'unknown'",
                        returnStdout: true
                    ).trim()
                    if (appUrl != "unknown" && appUrl != "") {
                        echo "🌐 Application available at: http://${appUrl}:8080"
                        echo "🏥 Health check: http://${appUrl}:8080/health"
                    }
                } catch (Exception e) {
                    echo "⚠️ Could not determine application URL"
                }
            }
        }
        
        failure {
            script {
                echo "❌ FAILURE: Deployment failed"
                echo "   Check the logs above for error details"
                
                // Try to get some debug information
                try {
                    withCredentials([[$class: 'AmazonWebServicesCredentialsBinding', credentialsId: env.AWS_CRED_ID]]) {
                        echo "🔍 DEBUG: Checking ECS cluster status..."
                        sh """
                            aws ecs describe-clusters --clusters ${TF_VAR_cluster_name} --region ${AWS_REGION} || echo "Cluster check failed"
                            aws ecs list-container-instances --cluster ${TF_VAR_cluster_name} --region ${AWS_REGION} || echo "Instance list failed"
                        """
                    }
                } catch (Exception e) {
                    echo "⚠️ Could not get debug information: ${e.getMessage()}"
                }
            }
        }
        
        unstable {
            script {
                echo "⚠️ UNSTABLE: Build completed with warnings"
            }
        }
    }
}