pipeline {
    agent any 
    environment {
        linuxServiceAccount=creds
        linuxServiceAccountID=string
        productiondatabase_connectionString=creds
        targetHost=string
    }
    stages {
        stage('build'){
            steps{
                //"hey self, what if once in your life you try a *different* language?" "then i'll update this file, moai.emoji."
                dotnetBuild(outputDirectory: "./dist", project: "$REPO_NAME.csproj")
            }
        }
        stage('test'){
            steps{
                //TODO: run tests
                //TODO: publish tests in some nicely readable format
                sh """#!/bin/bash
                """
            }
        }
        stage ('upload') {
            when {
                //now my CI/CD is no longer continuous, it's just... automatic.
                //(which is what I actually want tbh)
                //but that does mean I have to put this condition in every single branch
                branch "release"
            }
            steps{
                withCredentials([sshUserPrivateKey(credentialsId: env.linuxServiceAccountID, keyFileVariable: 'PK')])
                {
                    sh """#!/bin/bash
                        ssh -i \"$${PK}\" -tt $${linuxServiceAccount_USR}@$${targetHost} 'rm -rf temp_deploy & mkdir -p temp_deploy'
                        scp -i \"$${PK}\" -r dist $${linuxServiceAccount_USR}@$${env.targetHost}:temp_deploy
                    """
                }
            }
        }
        stage ('stop')
        {
            when {
                branch "release"
            }
            steps{
                withCredentials([sshUserPrivateKey(credentialsId: env.linuxServiceAccountID, keyFileVariable: 'PK')])
                {
                    sh """#!/bin/bash
                        ssh -i \"$${PK}\" -tt $${linuxServiceAccount_USR}@$${targetHost} 'systemctl --user stop $REPO_NAME'
                    """
                }
            }
        }
        stage ('update db')
        {
            when {
                branch "release"
            }
            steps{
                //TODO: backup database
                sh """#!/bin/bash
                """
                
                sh """#!/bin/bash
                    dotnet ef database update --connection "$${env.productiondatabase_connectionString}"
                """
                //TODO: if updating the db fails, restore the old one
                sh """#!/bin/bash
                """
            }
        }
        stage ('replace')
        {
            when {
                branch "release"
            }
            steps{
                withCredentials([sshUserPrivateKey(credentialsId: env.linuxServiceAccountID, keyFileVariable: 'PK')])
                {
                    sh """#!/bin/bash
                        ssh -i \"$${PK}\" -tt $${linuxServiceAccount_USR}@$${targetHost} 'rm -rf dist/ && mv temp_deploy/ dist/'
                    """
                }
            }
        }
        stage ('spin up')
        {
            when {
                branch "release"
            }
            steps{
                withCredentials([sshUserPrivateKey(credentialsId: env.linuxServiceAccountID, keyFileVariable: 'PK')])
                {
                    sh """#!/bin/bash
                        ssh -i \"$${PK}\" -tt $${linuxServiceAccount_USR}@$${targetHost} 'systemctl --user start $REPO_NAME'
                    """
                }
            }
        }
    }
}