/**
 * Helm Deployment Service
 * Handles Helm chart deployments
 */

import { logger } from '../lib/logger.js'
import { deploymentService, Deployment } from './deployment.js'
import { templateService, Template } from './template.js'
import { templateEngine } from './template-engine.js'

export interface HelmDeploymentOptions {
  chartName: string
  chartVersion?: string
  namespace?: string
  values: Record<string, any>
  releaseName: string
}

class HelmDeploymentService {
  /**
   * Deploy Helm chart
   */
  async deploy(
    deployment: Deployment,
    template: Template,
    options: HelmDeploymentOptions
  ): Promise<void> {
    logger.info('Starting Helm deployment', {
      deploymentId: deployment.id,
      releaseName: options.releaseName,
    })

    // Render Helm values from template
    const values = templateEngine.renderToHelm(template, {
      parameters: deployment.parameters,
      region: deployment.region,
    })

    // Merge with provided values
    const finalValues = {
      ...values,
      ...options.values,
    }

    // In production, this would:
    // 1. Write values.yaml file
    // 2. Execute: helm install <release-name> <chart> -f values.yaml -n <namespace>
    // 3. Monitor deployment status
    // 4. Capture outputs

    logger.info('Helm deployment completed', {
      deploymentId: deployment.id,
      releaseName: options.releaseName,
    })
  }

  /**
   * Upgrade Helm release
   */
  async upgrade(
    deployment: Deployment,
    template: Template,
    options: HelmDeploymentOptions
  ): Promise<void> {
    logger.info('Upgrading Helm deployment', {
      deploymentId: deployment.id,
      releaseName: options.releaseName,
    })

    // Render new values
    const values = templateEngine.renderToHelm(template, {
      parameters: deployment.parameters,
      region: deployment.region,
    })

    // In production: helm upgrade <release-name> <chart> -f values.yaml

    logger.info('Helm deployment upgraded', {
      deploymentId: deployment.id,
    })
  }

  /**
   * Uninstall Helm release
   */
  async uninstall(releaseName: string, namespace?: string): Promise<void> {
    logger.info('Uninstalling Helm release', { releaseName, namespace })

    // In production: helm uninstall <release-name> -n <namespace>

    logger.info('Helm release uninstalled', { releaseName })
  }

  /**
   * Get Helm release status
   */
  async getStatus(releaseName: string, namespace?: string): Promise<any> {
    // In production: helm status <release-name> -n <namespace> -o json
    return {
      status: 'deployed',
      releaseName,
      namespace,
    }
  }
}

export const helmDeploymentService = new HelmDeploymentService()

