pipeline {
    agent any

    environment {
        A_PASSWORD = credentials('credentials1')
    }

    options {
        ansiColor('xterm')
    }

    stages {
        stage('syntax-check') {
            steps {
                // checks the syntax
                sh 'a command to check the syntax'
            }
        }

        stage('DEV') {
            when {
                branch 'develop'
            }

            environment {
                B_PASSWORD = credentials('credentials2')
                CREDS = credentials('credentials3')
            }

            steps {
                lock('DEV-STAGE') {

                    // another comment
                    script {
                         sh "a command"
                         def VARIABLE1 = sh(returnStdout: true, script: 'a command').trim()
                         def VARIABLE2 = sh(returnStdout: true, script: 'a command').trim()
                         if (!VARIABLE1.equals("0")) {
                            error("${VARIABLE1}")
                         }
                         if (!VARIABLE2.equals("0")) {
                            error("${VARIABLE2}")
                         }
                    }
                }
            }
        }

        stage('DEP') {

            environment {
                C_PASSWORD = credentials('credentials4')
                CREDS2 = credentials('credentials5')
            }

            steps {
                lock('DEP-STAGE') {
                    // a comment
                    sh "a command"

                    // a comment
                    sh "a command"

                    // wait
                    sleep 40

                    // a comment
                    sh "a command"

                    // a comment
                    script {
                        sh "a command"
                         def VARIABLE3 = sh(returnStdout: true, script: 'a command').trim()
                         def VARIABLE4 = sh(returnStdout: true, script: 'a command').trim()
                         if (!VARIABLE3.equals("0")) {
                            error("${VARIABLE3}")
                         }
                         if (!VARIABLE4.equals("0")) {
                            error("${VARIABLE4}")
                         }
                    }

                }
            }
        }

        stage('TEST') {
            when {
                branch 'release/*'
            }

            environment {
                D_PASSWORD = credentials('credentials6')
                CREDS3 = credentials('credentials7')
            }

            // a comment
            steps {
                lock('TEST-STAGE') {

                    // a comment
                    script {
                         sh "a command"
                         def VARIABLE5 = sh(returnStdout: true, script: 'a command').trim()
                         def VARIABLE6 = sh(returnStdout: true, script: 'a command').trim()
                         if (!VARIABLE5.equals("0")) {
                            error("${VARIABLE5}")
                         }
                         if (!VARIABLE6.equals("0")) {
                            error("${VARIABLE6}")
                         }
                    }
                }
            }
        }
    }
}