pipeline {
    agent any  // Use any available Jenkins agent/node

    environment {
        // ID of the credentials we created in Jenkins for Git
        GIT_CREDENTIALS = 'gitea-creds'
    }

    stages {

        stage('Checkout SCM') {
            steps {
                // Checkout the repository from Git (the Jenkinsfile's repo)
                // This gives us the current code in the workspace
                checkout scm
            }
        }

        stage('Create file') {
            steps {
                sh '''
                    # Create a file named jenkis.txt
                    # Content includes a greeting, current date/time, and Jenkins build number
                    echo "Hello from Jenkins! Current time is $(date), run number ${BUILD_NUMBER}" > jenkis.txt
                    
                    # Print the content to Jenkins console for visibility
                    cat jenkis.txt
                '''
            }
        }

        stage('Commit & Push') {
            steps {
                // Provide Git credentials for pushing
                withCredentials([
                    usernamePassword(
                        credentialsId: env.GIT_CREDENTIALS,
                        usernameVariable: 'GIT_USER',
                        passwordVariable: 'GIT_PASS'
                    )
                ]) {
                    sh '''
                        # Configure Git user for commit
                        git config user.email "jenkins@local"
                        git config user.name "Jenkins"

                        # Add the file to staging
                        git add jenkis.txt

                        # Commit with a message that includes the build number
                        # If there is nothing new, skip commit
                        git commit -m "Jenkins: update jenkis.txt for run ${BUILD_NUMBER}" || echo "Nothing to commit"

                        # Push changes to main branch using credentials
                        git push https://$GIT_USER:$GIT_PASS@gitea.dev.bodnarescu.ro/s_zsolt/test_git.git HEAD:main
                    '''
                }
            }
        }
    }
}