pipeline {
    agent any
    environment {
        ANSIBLE_SERVER = "157.230.120.252"
    }
    stages {
        stage("copy ansible folder and ec2 access key to ansible-server") {
            steps {
                script {
                    sshagent(['ansible-server-key']) {
                        echo "copying ansible folder to ansible server"
                        // ${ANSIBLE_SERVER}:/root without root will give jenkins@${ANSIBLE_SERVER}:/root
                        sh "scp -o StrictHostKeyChecking=no ansible/* root@${ANSIBLE_SERVER}:/root"    

                        echo "copying ssh keys for ec2 instances"
                        withCredentials([sshUserPrivateKey(credentialsId: 'ec2-server-key', keyFileVariable: 'keyfile', usernameVariable: 'user')]) {
                            sh 'scp $keyfile root@$ANSIBLE_SERVER:/root/ssh-key.pem'
                        }
                    }                               
                }
            }
        }
        stage("execute ansible playbook from the ansible-server") {
            environment {
                AWS_ACCESS_KEY_ID = credentials('jenkins_aws_access_key_id')
                AWS_SECRET_ACCESS_KEY = credentials('jenkins_aws_secret_access_key')
            }
            steps {
                script {
                    echo "executing ansible-playbook"
                    
                    def remote = [:]
                    remote.name = "ansible-server"
                    remote.host = ANSIBLE_SERVER
                    remote.allowAnyHosts = true
                    
                    withCredentials([sshUserPrivateKey(credentialsId: 'ansible-server-key', keyFileVariable: 'keyfile', usernameVariable: 'user')]) {
                        remote.identityFile = keyfile
                        remote.user = user

                        sshCommand remote: remote, command: "ls -l"
                        
                        // set AWS credentials
                        sshScript remote: remote, script: "ansible/prepare-server.sh"
                        sshCommand remote: remote, command: 'export AWS_ACCESS_KEY_ID=$AWS_ACCESS_KEY_ID'
                        sshCommand remote: remote, command: 'export AWS_SECRET_ACCESS_KEY=$AWS_SECRET_ACCESS_KEY'
                        
                        sshCommand remote: remote, command: "ansible-playbook docker-and-compose.yaml"
                    }
                }
            }
        }
    }   
}