#!groovy

import com.freeleaps.devops.SourceFetcher
import com.freeleaps.devops.DependenciesResolver
import com.freeleaps.devops.enums.DependenciesManager
import com.freeleaps.devops.enums.ServiceLanguage
import com.freeleaps.devops.CommitMessageLinter
import com.freeleaps.devops.ChangedComponentsDetector

def generateComponentStages(component) {
    return [
      stage("${component.name} :: Build Agent Setup") {
        steps {
            script {
                if (env.executeMode == "fully" || env.changedComponents.contains(component.name)) {
                    def buildAgentImage = component.buildAgentImage
                    if (buildAgentImage == null || buildAgentImage.isEmpty()) {
                        log.warn("Pipeline", "Not set buildAgentImage for ${component.name}, using default build agent image")

                        def language = ServiceLanguage.parse(configurations.serviceLang)
                        switch(language) {
                            case ServiceLanguage.PYTHON:
                                buildAgentImage = "python:3.10-slim-buster"
                                break
                            case ServiceLanguage.JS:
                                buildAgentImage = "node:lts-alpine"
                                break
                            default:
                                error("Unknown service language")
                        }
                    }
                    log.info("Pipeline", "Using ${buildAgentImage} as build agent image for ${component.name}")
                    env.buildAgentImage = buildAgentImage
                }
            }
        }
    },

    stage("${component.name} :: Dependencies Resolving") {
        agent {
            kubernetes {
                defaultContainer 'dep-resolver'
                yaml """
apiVersion: v1
kind: Pod
metadata:
  labels:
    freeleaps-devops-system/milestone: dependencies-resolving
spec:
  containers:
  - name: dep-resolver
    image: ${env.buildAgentImage}
    command:
    - sleep
    args:
    - infinity
"""
            }
        }
        steps {
            script {
                if (env.executeMode == "fully" || env.changedComponents.contains(component.name)) {
                    log.info("Pipeline", "Build Agent sets to: ${env.buildAgentImage}")
                    def sourceFetcher = new SourceFetcher(this)
                    sourceFetcher.fetch(configurations)

                    def language = ServiceLanguage.parse(component.language)
                    def depManager = DependenciesManager.parse(component.dependenciesManager)

                    def dependenciesResolver = new DependenciesResolver(this, language, env.workspace + "/" + component.root + "/")
                    dependenciesResolver.useManager(depManager)
                    
                    if (component.buildCacheEnabled) {
                        dependenciesResolver.enableCachingSupport()
                    } else {
                        dependenciesResolver.disableCachingSupport()
                    }

                    dependenciesResolver.resolve(component)
                }
            }
        }
    }
  ]
}

def call(Closure closure) {
  def configurations = [:]
  closure.resolveStrategy = Closure.DELEGATE_FIRST
  closure.delegate = configurations
  closure()

  pipeline {
    agent any
    options {
      buildDiscarder(logRotator(numToKeepStr: '25'))
      timeout(time: 30, unit: 'MINUTES')
      parallelsAlwaysFailFast()
    }

    stages {
      stage("Commit Linting If Enabled") {
        when {
          expression {
            return configurations.commitMessageLintEnabled != null && configurations.commitMessageLintEnabled
          }
        }
        agent {
          kubernetes {
            defaultContainer 'commit-message-linter'
            yaml """
apiVersion: v1
kind: Pod
metadata:
  labels:
    freeleaps-devops-system/milestone: commit-message-linting
spec:
  containers:
  - name: commit-message-linter
    image: docker.io/commitlint/commitlint:master
    command:
    - cat
    tty: true
    volumeMounts:
    - name: workspace
      mountPath: /workspace
  volumes:
    - name: workspace
      emptyDir: {} 
"""
          }
        }
        steps {
          script {
            log.info("Pipeline","Commit message linting is enabled")
            def sourceFetcher = new SourceFetcher(this)
            sourceFetcher.fetch(configurations)

            def linter = new CommitMessageLinter(this)
            linter.lint(configurations)
          }
        }
      }

      stage("Execute Mode Detection") {
        steps {
          script {
            def executeMode = configurations.executeMode
            if (executeMode == null || executeMode.isEmpty()) {
              log.warn("Pipeline","Not set executeMode, using fully as default execute mode")
              env.executeMode = "fully"
            } else if (executeMode == 'on-demand' && configurations.serviceGitRepoType != 'monorepo') {
              log.warn("Pipeline","serviceGirRepoType is not monorepo, on-demand mode is not supported, using fully mode")
              env.executeMode = "fully"
            } else {
              log.info("Pipeline","Using ${executeMode} as execute mode")
              env.executeMode = executeMode
            }
          }
        }
      }

      stage("Code Changes Detection") {
        when {
          expression {
            return env.executeMode == "on-demand"
          }
        }

        steps {
          script {
            sourceFetcher.fetch(configurations)

            def changedComponentsDetector = new ChangedComponentsDetector(this)
            def changedComponents = changedComponentsDetector.detect(env.workspace, configurations.components)

            log.info("Pipeline","Changed components: ${changedComponents}")
            env.changedComponents = changedComponents.join(' ')
          }
        }
      }

      stage("Components Build (Dynamic Generated Stages)") {
        when {
          expression {
            return env.executeMode == "fully" || env.changedComponents.size() > 0
          }
        }
        steps {
          script {
            configurations.components.each { component ->
              generateComponentStages(component)
            }
          }
        }
      }

    }
  }
}