pipeline {
    agent any 
    parameters { 
        string(name: 'servicename', description: "service name")
        string(name: 'svcdesc', description: "service description")
        string(name: 'targetHost', description: "system to live on", defaultValue: "moloryb.lan")
        booleanParam(name: 'database', description: "service has a database", defaultValue: true)
    }
    environment {
        //pw_linuxserviceaccount=""
        //pw_productiondatabase=""
        //pw_developmentdatabase=""
        //SUDOER=credentials('') //going to be set based on target host
        SUDOERSSH=credentials('2c48e1a9-22b2-455c-9959-6b29e86d3fb5')
        JENKINS=credentials('f1192e74-dfe0-402f-a189-703482d914fe')
        GITEATOKEN = credentials('d0e86441-2157-405f-8539-a9a9010c6ecf')
    }
    stages {
        stage("environment setup") {
            steps {
                script {
                    if (servicename.isEmpty()) {
                        error("servicename mandatory")
                    }
                    if (servicename.contains(' ')) {
                        error("servicename cannot have spaces. try dashes.")
                    }

                    switch (targetHost) {
                        case "alloces.lan":
                            SUDOER=credentials('a674f816-2b35-4d60-ba60-7b66e86f3c5c')
                        case "moloryb.lan":
                            SUDOER=credentials('1f3b965e-bcc0-4074-99f2-b64dddbf7de7')
                      break
                        default:
                            error("target host not recognized. btw: yes .lan, all lowercase.")
                    }

                    env.pw_linuxserviceaccount=sh(returnStdout: true, script:  "mktemp -u XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
                    echo env.pw_linuxserviceaccount
                    env.pw_productiondatabase=sh(returnStdout: true, script: "mktemp -u XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
                    echo env.pw_productiondatabase
                    env.pw_developmentdatabase=sh(returnStdout: true, script: "mktemp -u XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX")
                    echo env.pw_developmentdatabase
                }
            }
        }
        stage("gitea project"){
            steps{
                sh """
                    curl -X 'POST' \
                      'https://gitea.arg.rip/api/v1/repos/greyn/_template-service/generate' \
                      -H 'accept: application/json' \
                      -H 'Authorization: token ${env.GITEATOKEN}' \
                      -H 'Content-Type: application/json' \
                      -d '{
                          "description": "${svcdesc}",
                          "git_content": true,
                          "git_hooks": true,
                          "labels": true,
                          "name": "${servicename}",
                          "owner": "greyn",
                          "private": false,
                          "protected_branch": true,
                          "topics": true,
                          "webhooks": true
                        }'
                """
            }
        }
        stage("jenkins pipeline"){
            steps{
                //the bad news is that it looks like it's not allowed to trigger just any old job remotely
                //the good news is that this seems to pick it up pretty reliably
                //sh """
                //    curl -X POST -L --user ${env.JENKINS_USR}:${env.JENKINS_PSW} \
                //        alloces.lan:8080/job/gitea.arg.rip/build
                //    """

                timeout(time: 5, unit: 'MINUTES') {
                    sh """
                        strRes=""
                        while [ -z "\$strRes" ]; 
                        do
                            sleep 5;
                            strRes=\$(curl -X GET -s -u ${env.JENKINS_USR}:'${env.JENKINS_PSW}' \
                                alloces.lan:8080/job/gitea.arg.rip/api/json \
                                | jq ".jobs.[] | select(.name==\"${env.servicename}\")")
                        done
                    """ 
                }
                sshagent(['f42347e9-e3b5-44af-a1af-c5e7b9775fee']) {
                    sh """
                        git clone 'ssh://git@gitea.arg.rip:8022/greyn/${servicename}.git'
                        pushd ${servicename}

                        dbstartline=\$(sed -n '/---dbstart---]/=' Jenkinsfile)
                        dbendline=\$(sed -n '/---dbend---/=' Jenkinsfile)
                    """
                    script { //there's no "if" "step" so any "if" must be in a "script" step
                        if(params.database){
                            sh """
                                sed -i -e '${dbstartline}d;${dbendline}d;' Jenkinsfile

                                databasecredsid=\$(uuidgen)

                                CRUMB=\$(curl -s 'http://${env.JENKINS_USR}:${env.JENKINS_PSW}@alloces.lan:8080/crumbIssuer/api/xml?xpath=concat(//crumbRequestField,":",//crumb)')
                                echo $CRUMB
                                curl -H $CRUMB -X POST 'http://${env.JENKINS_USR}:${env.JENKINS_PSW}@alloces.lan:8080/job/gitea.arg.rip/job/${servicename}/credentials/store/folder/domain/greyn%20services/createCredentials' \
                                --data-urlencode 'json={
                                  "": "0",
                                  "credentials": {
                                    "scope": "GLOBAL",
                                    "id": "$databasecredsid",
                                    "secret": "Host=${targetHost};Database=${servicename};Username=${servicename};Password=${env.pw_productiondatabase};IncludeErrorDetail=true;",
                                    "description": "database connection string",
                                    "\$class": "com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl"
                                  }
                                }'
                                sed -i 's/productiondatabase_connectionString=creds/productiondatabase_connectionString=credentials('$databasecredsid')/' Jenkinsfile

                                git add .
                                git commit -m "set up for database"
                            """
                        }
                        else{
                            sh """
                                sed -i -e '${dbstartline},${dbendline}d;' Jenkinsfile
                                git add .
                                git commit -m "stripped database lines"
                            """
                        }
                    
                        sh """
                            popd

                            env.usernameCredsId=\$(uuidgen)

                            CRUMB=\$(curl -s 'http://${env.JENKINS_USR}:${env.JENKINS_PSW}@alloces.lan:8080/crumbIssuer/api/xml?xpath=concat(//crumbRequestField,":",//crumb)')
                            echo $CRUMB
                            curl -H $CRUMB -X POST 'http://${env.JENKINS_USR}:${env.JENKINS_PSW}@alloces.lan:8080/job/gitea.arg.rip/job/${servicename}/credentials/store/folder/domain/greyn%20services/createCredentials' \
                            --data-urlencode 'json={
                              "": "0",
                              "credentials": {
                                "scope": "GLOBAL",
                                "id": "$env.usernameCredsId",
                                "username": "${servicename}",
                                "password": "${env.pw_linuxserviceaccount}",
                                "description": "service account login",
                                "\$class": "com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl"
                              }
                            }'

                            certCredsId=\$(uuidgen)


                            ssh-keygen -t ed25519 -f "${servicename}" -N ""
                            privatekeycontent=\$(cat ${servicename}))
                            pubkeycontent=\$(cat ${servicename}.pub))
                            CRUMB=\$(url -s 'http://${env.JENKINS_USR}:${env.JENKINS_PSW}@alloces.lan:8080/crumbIssuer/api/xml?xpath=concat(//crumbRequestField,":",//crumb)')
                            echo $CRUMB
                            curl -H $CRUMB -X POST 'http://${env.JENKINS_USR}:${env.JENKINS_PSW}@alloces.lan:8080/job/gitea.arg.rip/job/${servicename}/credentials/store/folder/domain/greyn%20services/createCredentials' \
                            --data-urlencode 'json={
                              "": "0",
                              "credentials": {
                                "scope": "GLOBAL",
                                "id": "$env.usernameCredsId",
                                "username": "${servicename}",
                                "password": "",
                                "privateKeySource": {
                                    "stapler-class": "com.cloudbees.jenkins.plugins.sshcredentials.impl.BasicSSHUserPrivateKey$DirectEntryPrivateKeySource",
                                      "privateKey": "$privatekeycontent",
                                    },
                                    "description": "${servicename}",
                                    "stapler-class": "com.cloudbees.jenkins.plugins.sshcredentials.impl.BasicSSHUserPrivateKey"
                                },
                                "description": "service account ssh",
                                "\$class": "com.cloudbees.jenkins.plugins.sshcredentials.impl.BasicSSHUserPrivateKey"
                              }
                            }'
                            privatekeycontent=

                            sed -i 's/linuxServiceAccount=creds/linuxServiceAccount=credentials('${env.usernameCredsId}')/' Jenkinsfile
                            sed -i 's/targetHost=string/targetHost="${targetHost}"/' Jenkinsfile

                        """
                        sh """
                            git push
                            popd
                        """
                    }
                }
            }
        }
        stage("service account"){
            steps{
                script {
                    sshagent([SUDOERSSH]) 
                    {
                        sh """ssh -tt ${SUDOER_USR}@${targetHost} username=${servicename} password=${env.pw_linuxserviceaccount} pubkeycontent=${env.pubkeycontent} 'echo "$SUDOER_PSW" | sudo -Sv && bash -s' << 'ENDSSH'
                            useradd -m -s /bin/bash $username
                            echo "$username:$password" | chpasswd
                            loginctl enable-linger $username
                            cd ~/home/$username
                            mkdir .ssh
                            pushd .ssh
                            echo $pubkeycontent > authorized_keys
                            popd
                            chown -R $username:$username .ssh
                        ENDSSH
                        """
                    }
                }
            }
        }
        stage("db init"){
            when { expression { return params.database } }
            steps {
                //i'm pretty sure "update" with nothing will init? 
                //meaning we don't have to init, first update will init
                script {
                    sshagent([SUDOERSSH])
                    {
                        sh """ssh -tt SUDOER_USR@${targetHost} servicename=$servicename pw_productiondatabase=${env.pw_productiondatabase} pw_developmentdatabase=${env.pw_developmentdatabase} 'echo "$SUDOER_PSW" | sudo -Sv && bash -s' << 'ENDSSH'
                            sudo -u postgres psql && bash -s << 'ENDPSQL'
                                create database $servicename;
                                create user $servicename with encrypted password '$pw_productiondatabase';
                                grant all privileges on database $servicename to $servicename;
                            ENDPSQL
                            
                            service_dev="${servicename}_dev"
                            sudo -u postgres psql && bash -s << 'ENDPSQL'
                                create database $service_dev;
                                create user $service_dev with encrypted password '$pw_developmentdatabase';
                                grant all privileges on database $service_dev to $service_dev;
                            ENDPSQL
                    
                        ENDSSH"""
                    }
                }
            }
        }
        stage("initial service setup"){
            steps{
                sshagent([SUDOERSSH])
                {
                    sh 'scp $servicename.service $servicename@${targetHost}:~/.config/systemd/user/$servicename.service'
                    sh """ssh -tt SUDOER_USR@${targetHost} servicename=$servicename pw_productiondatabase=${env.pw_productiondatabase} pw_developmentdatabase=${env.pw_developmentdatabase} 'echo "$SUDOER_PSW" | sudo -Sv && bash -s' << 'ENDSSH'
                        sudo -u ${servicename} && bash -s << 'ENDASSERVICE'
                            systemctl --user daemon-reload
                            systemctl --user enable $servicename.service
                        ENDASSERVICE
                    ENDSSH"""
                }  
            }
        }
    }
    post { 
        failure {
            matrixSendMessage https:true, hostname: 'greyn.club', port:8448, accessTokenCredentialsId: '040b63d1-2f14-4692-badb-114bddd7c5a5', roomId: '!QmOCACetHdGDlNFsZP:greyn.club', body: '1-click service failed :(', formattedBody: "1-click service <b>failed</b> :(" 
        }
        success {
            matrixSendMessage https:true, hostname: 'greyn.club', port:8448, accessTokenCredentialsId: '040b63d1-2f14-4692-badb-114bddd7c5a5', roomId: '!QmOCACetHdGDlNFsZP:greyn.club', body: '1-click service success! go pick up the credentials!', formattedBody: '1-click service success! go pick up the credentials!'
            //TODO: archiveArtifacts the password data, then store them somewhere
        }
    }
}