pipeline {
    agent any

    stages {
        stage('Build') {
            steps {
                script {
                    // Get the current commit SHA and take the first 7 characters
                    def commitSha = env.GIT_COMMIT.take(7)

                    // Tag the Docker image with the short commit SHA
                    sh """
                    docker buildx build -t helloworld:${commitSha} 
                    docker run --rm helloworld:${commitSha}
                    """
                }
            }
        }
    }

    post {
        failure {
            script {
                // Use the last commit SHA instead of the failed build's SHA
                def lastCommitSha = env.GIT_COMMIT.take(7)

                // Get the last successful build
                def lastSuccessfulBuild = currentBuild.rawBuild.getPreviousSuccessfulBuild()

                if (lastSuccessfulBuild) {
                    // Redeploy the last successful build using the last commit SHA
                    echo "Redeploying build #${lastSuccessfulBuild.getId()}..."
                    echo "Last successful build was #${lastSuccessfulBuild.getNumber()}"
                    echo "Using last commit SHA: ${lastCommitSha}"

                    // Example: Call your deployment script or steps here
                    // sh "deploy-script.sh ${lastSuccessfulBuild.getNumber()} --commit ${lastCommitSha}"
                    sh """
                        docker buildx build -t khabir7/helloworld:${lastCommitSha}
                        docker run --rm khabir7/helloworld:${lastCommitSha}
                       """
                } else {
                    error "No successful build found to deploy."
                }
            }
        }
    }
}