/**
 * Spicy ECS Cluster Pipeline
 *
 * Deploys an ECS cluster using AWS CDK with:
 * - EC2 Capacity Provider with managed scaling
 * - Optional Fargate capacity providers (FARGATE + FARGATE_SPOT)
 * - Mixed instances policy for Spot support
 * - Instance draining on termination
 * - Optional internal/external ALBs
 *
 * Usage in Jenkinsfile:
 * ```groovy
 * @Library(["spicy-automation@main"]) _
 *
 * spicyECSCluster(
 *     jenkinsAwsCredentialsId: "aws-credentials",
 *     region: "ca-central-1",
 *     stackName: "spicy-ecs-cluster",
 *     vpcStackName: "production-vpc",
 *     ownerTag: "SpicyTeam",
 *     productTag: "spicy",
 *     componentTag: "ecs-cluster",
 *     environment: "dev",
 *     instanceType: "m5a.large",
 *     minClusterSize: 2,
 *     maxClusterSize: 4,
 *     spotEnabled: true,
 *     onDemandPercentage: 20,
 *     createExternalLoadBalancer: true,
 *     createInternalLoadBalancer: true,
 *     certificateArn: "arn:aws:acm:ca-central-1:123456789:certificate/xxx",
 * )
 * ```
 */

def call(Map args) {
  args = spicyDefaults(args)

  timeout(time: 1, unit: "DAYS") {
    timestamps {
      node("docker") {
        properties(args.pipelineProperties)
        ansiColor("xterm") {

          stage("Checkout") {
            checkout scm
            giteaUtils.setSuccess("checkout")
          }

          stage("Setup") {
            cdkUtils.install()
            giteaUtils.setSuccess("setup")
          }

          if (args.onPreDeploy) {
            spicyUtils.stageWithFailure("PreDeploy") {
              args.onPreDeploy.call(args, [:])
            }
          }

          stage("Deploy ECS Cluster") {
            if (gitUtils.isMain()) {
              try {
                def context = buildEcsClusterContext(args)
                def account = awsUtils.buildAccountConfig(args)

                // Show diff first
                if (args.showDiff != false) {
                  echo "Showing CDK diff..."
                  cdkUtils.diff(
                    account: account,
                    stackName: args.stackName,
                    stackType: "ecs-cluster",
                    context: context
                  )
                }

                // Manual approval for production
                if (args.environment == 'prod' || args.environment == 'production') {
                  manualApproval(
                    message: "Deploy ECS cluster ${args.stackName} to production?",
                    submitter: args.approvers ?: ''
                  )
                }

                // Deploy the stack
                echo "Deploying ECS cluster stack: ${args.stackName}"
                cdkUtils.deploy(
                  account: account,
                  stackName: args.stackName,
                  stackType: "ecs-cluster",
                  context: context
                )

                giteaUtils.setSuccess("deploy")

                if (args.onPostDeploy) {
                  spicyUtils.stageWithFailure("PostDeploy") {
                    args.onPostDeploy.call(args, [
                      stackName: args.stackName
                    ])
                  }
                }

              } catch (err) {
                giteaUtils.setFailed("deploy")
                throw err
              }
            } else {
              echo "Skipping deployment - not on main branch"

              // Show diff on non-main branches for PR review
              if (args.showDiffOnPR != false) {
                def context = buildEcsClusterContext(args)
                def account = awsUtils.buildAccountConfig(args)

                echo "Showing CDK diff for PR review..."
                try {
                  cdkUtils.diff(
                    account: account,
                    stackName: args.stackName,
                    stackType: "ecs-cluster",
                    context: context
                  )
                } catch (err) {
                  echo "Diff failed (stack may not exist yet): ${err.message}"
                }
              }
            }
          }

          giteaUtils.setSuccess("pipeline")
        }
      }
    }
  }
}


/**
 * Build CDK context map from pipeline arguments
 */
def buildEcsClusterContext(Map args) {
  def context = [:]

  // Required: VPC stack name (all VPC details imported from VPC stack exports)
  context.vpcStackName = args.vpcStackName
  if (!args.numberOfAzs) {
    error("numberOfAzs is required for ECS cluster; pass the same value used for the VPC stack (2-4).")
  }
  context.numberOfAzs = args.numberOfAzs.toString()

  // Required tags
  context.ownerTag = args.ownerTag
  context.productTag = args.productTag
  context.componentTag = args.componentTag ?: 'ecs-cluster'
  context.environment = args.environment ?: 'dev'
  context.build = args.build ?: gitUtils.getShortSHA()

  // Instance configuration
  if (args.instanceType) context.instanceType = args.instanceType
  if (args.additionalInstanceTypes) context.additionalInstanceTypes = args.additionalInstanceTypes
  if (args.keyName) context.keyName = args.keyName
  if (args.ebsVolumeSize) context.ebsVolumeSize = args.ebsVolumeSize.toString()

  // Container Insights
  if (args.containerInsights != null) context.containerInsights = args.containerInsights.toString()

  // Scaling configuration
  if (args.minClusterSize) context.minClusterSize = args.minClusterSize.toString()
  if (args.maxClusterSize) context.maxClusterSize = args.maxClusterSize.toString()
  if (args.targetCapacityPercent) context.targetCapacityPercent = args.targetCapacityPercent.toString()

  // Spot configuration
  if (args.spotEnabled != null) context.spotEnabled = args.spotEnabled.toString()
  if (args.onDemandPercentage != null) context.onDemandPercentage = args.onDemandPercentage.toString()
  if (args.spotAllocationStrategy) context.spotAllocationStrategy = args.spotAllocationStrategy

  // Load balancer configuration
  if (args.createExternalLoadBalancer != null) {
    context.createExternalLoadBalancer = args.createExternalLoadBalancer.toString()
  }
  if (args.createInternalLoadBalancer != null) {
    context.createInternalLoadBalancer = args.createInternalLoadBalancer.toString()
  }
  if (args.certificateArn) context.certificateArn = args.certificateArn

  // Fargate configuration (enables both FARGATE and FARGATE_SPOT capacity providers)
  if (args.enableFargate != null) context.enableFargate = args.enableFargate.toString()

  // Timeouts
  if (args.drainingTimeout) context.drainingTimeout = args.drainingTimeout.toString()
  if (args.maxInstanceLifetime) context.maxInstanceLifetime = args.maxInstanceLifetime.toString()

  return context
}

return this