# Complete Workflow Example
# This workflow demonstrates all features of the Attune workflow system

ref: examples.complete_deployment_workflow
label: "Complete Application Deployment Workflow"
description: |
  A comprehensive example workflow that demonstrates:
  - Sequential and parallel execution
  - Conditional branching
  - Iteration and batching
  - Variable scoping and templating
  - Error handling and retry
  - Human-in-the-loop (inquiries)
  - Subworkflow invocation
version: "1.0.0"

# Input parameters accepted by this workflow
parameters:
  app_name:
    type: string
    required: true
    description: "Name of the application to deploy"

  version:
    type: string
    required: true
    description: "Version to deploy"

  environment:
    type: string
    enum: [dev, staging, production]
    default: dev
    description: "Target environment"

  regions:
    type: array
    items:
      type: string
    default: ["us-east-1"]
    description: "AWS regions to deploy to"

  enable_canary:
    type: boolean
    default: false
    description: "Enable canary deployment"

  rollback_on_failure:
    type: boolean
    default: true
    description: "Automatically rollback on failure"

# Output schema - what this workflow produces
output:
  type: object
  properties:
    deployment_id:
      type: string
    status:
      type: string
      enum: [success, failed, rolled_back]
    deployed_version:
      type: string
    deployment_urls:
      type: array
      items:
        type: string
    duration_seconds:
      type: integer

# Workflow-scoped variables
vars:
  deployment_id: null
  start_time: null
  health_check_urls: []
  failed_regions: []
  successful_regions: []
  canary_passed: false
  approval_granted: false
  rollback_initiated: false

# Task execution graph
tasks:
  # ============================================================================
  # PHASE 1: VALIDATION & PREPARATION
  # ============================================================================

  - name: start_workflow
    action: core.noop
    input: {}
    publish:
      - start_time: "{{ system.timestamp }}"
    on_success: validate_inputs

  - name: validate_inputs
    action: validation.validate_deployment_params
    input:
      app_name: "{{ parameters.app_name }}"
      version: "{{ parameters.version }}"
      environment: "{{ parameters.environment }}"
      regions: "{{ parameters.regions }}"
    retry:
      count: 2
      delay: 5
    on_success: check_environment_type
    on_failure: notify_validation_failed

  # Conditional: Production deployments require approval
  - name: check_environment_type
    action: core.noop
    input: {}
    decision:
      - when: "{{ parameters.environment == 'production' }}"
        next: require_production_approval
      - default: create_deployment_record

  # Human-in-the-loop: Require approval for production
  - name: require_production_approval
    action: core.inquiry
    input:
      prompt: |
        Approve production deployment?
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Regions: {{ parameters.regions | join(', ') }}
      schema:
        type: object
        properties:
          approved:
            type: boolean
          approver_notes:
            type: string
      assigned_to: "deployment-approvers"
      timeout: 3600  # 1 hour timeout
    publish:
      - approval_granted: "{{ task.require_production_approval.result.approved }}"
    decision:
      - when: "{{ workflow.approval_granted == true }}"
        next: create_deployment_record
      - default: cancel_deployment
    on_timeout: deployment_approval_timeout

  # ============================================================================
  # PHASE 2: DEPLOYMENT PREPARATION
  # ============================================================================

  - name: create_deployment_record
    action: deployments.create_record
    input:
      app_name: "{{ parameters.app_name }}"
      version: "{{ parameters.version }}"
      environment: "{{ parameters.environment }}"
      regions: "{{ parameters.regions }}"
      initiated_by: "{{ system.identity.login }}"
    publish:
      - deployment_id: "{{ task.create_deployment_record.result.id }}"
    on_success: parallel_pre_deployment_checks
    on_failure: notify_deployment_failed

  # Parallel execution: Run multiple checks concurrently
  - name: parallel_pre_deployment_checks
    type: parallel
    tasks:
      - name: check_docker_registry
        action: docker.check_registry_health
        input:
          registry: "{{ pack.config.docker_registry }}"

      - name: check_kubernetes_clusters
        action: kubernetes.check_clusters
        input:
          regions: "{{ parameters.regions }}"

      - name: check_database_migrations
        action: database.check_pending_migrations
        input:
          app_name: "{{ parameters.app_name }}"
          environment: "{{ parameters.environment }}"

      - name: verify_secrets
        action: secrets.verify_availability
        input:
          app_name: "{{ parameters.app_name }}"
          environment: "{{ parameters.environment }}"
    on_success: build_and_test
    on_failure: cleanup_failed_deployment

  # ============================================================================
  # PHASE 3: BUILD & TEST
  # ============================================================================

  - name: build_and_test
    action: ci.build_and_test
    input:
      app_name: "{{ parameters.app_name }}"
      version: "{{ parameters.version }}"
      registry: "{{ pack.config.docker_registry }}"
      run_tests: true
    timeout: 1800  # 30 minutes
    retry:
      count: 2
      delay: 60
      backoff: exponential
    on_success: push_container_image
    on_failure: notify_build_failed
    on_timeout: notify_build_timeout

  - name: push_container_image
    action: docker.push_image
    input:
      image: "{{ task.build_and_test.result.image_name }}"
      tag: "{{ parameters.version }}"
      registry: "{{ pack.config.docker_registry }}"
    on_success: check_canary_enabled
    on_failure: notify_push_failed

  # ============================================================================
  # PHASE 4: CANARY DEPLOYMENT (CONDITIONAL)
  # ============================================================================

  - name: check_canary_enabled
    action: core.noop
    input: {}
    decision:
      - when: "{{ parameters.enable_canary == true }}"
        next: deploy_canary
      - default: deploy_to_all_regions

  - name: deploy_canary
    action: kubernetes.deploy_canary
    input:
      app_name: "{{ parameters.app_name }}"
      image: "{{ task.build_and_test.result.image_uri }}"
      region: "{{ parameters.regions | first }}"
      traffic_percentage: 10
    on_success: monitor_canary
    on_failure: handle_canary_failure

  - name: monitor_canary
    action: monitoring.analyze_canary
    input:
      app_name: "{{ parameters.app_name }}"
      duration: 300  # 5 minutes
      error_threshold: 0.01
    publish:
      - canary_passed: "{{ task.monitor_canary.result.success }}"
    decision:
      - when: "{{ workflow.canary_passed == true }}"
        next: promote_canary
      - default: rollback_canary

  - name: promote_canary
    action: kubernetes.promote_canary
    input:
      app_name: "{{ parameters.app_name }}"
      region: "{{ parameters.regions | first }}"
    on_success: deploy_to_remaining_regions
    on_failure: rollback_canary

  - name: rollback_canary
    action: kubernetes.rollback_canary
    input:
      app_name: "{{ parameters.app_name }}"
      region: "{{ parameters.regions | first }}"
    publish:
      - rollback_initiated: true
    on_complete: notify_canary_failed

  # ============================================================================
  # PHASE 5: MULTI-REGION DEPLOYMENT (WITH ITERATION)
  # ============================================================================

  - name: deploy_to_all_regions
    action: kubernetes.deploy
    with_items: "{{ parameters.regions }}"
    input:
      app_name: "{{ parameters.app_name }}"
      image: "{{ task.build_and_test.result.image_uri }}"
      region: "{{ item }}"
      replicas: 3
      environment: "{{ parameters.environment }}"
    retry:
      count: 2
      delay: 30
    publish:
      - health_check_urls: "{{ task.deploy_to_all_regions.results | map(attribute='health_url') | list }}"
    on_success: parallel_health_checks
    on_failure: handle_deployment_failures

  - name: deploy_to_remaining_regions
    action: kubernetes.deploy
    # Filter out first region (already has canary)
    with_items: "{{ parameters.regions | slice(start=1) }}"
    input:
      app_name: "{{ parameters.app_name }}"
      image: "{{ task.build_and_test.result.image_uri }}"
      region: "{{ item }}"
      replicas: 3
      environment: "{{ parameters.environment }}"
    on_success: parallel_health_checks
    on_failure: handle_deployment_failures

  # ============================================================================
  # PHASE 6: VERIFICATION
  # ============================================================================

  - name: parallel_health_checks
    action: http.get
    with_items: "{{ workflow.health_check_urls }}"
    batch_size: 5  # Check 5 URLs at a time
    input:
      url: "{{ item }}"
      expected_status: 200
      timeout: 30
    retry:
      count: 10
      delay: 10
      backoff: linear
    on_success: run_smoke_tests
    on_failure: handle_health_check_failures

  - name: run_smoke_tests
    action: testing.run_smoke_tests
    input:
      app_name: "{{ parameters.app_name }}"
      environment: "{{ parameters.environment }}"
      base_urls: "{{ workflow.health_check_urls }}"
    timeout: 600
    on_success: verify_metrics
    on_failure: handle_smoke_test_failures

  - name: verify_metrics
    action: monitoring.verify_deployment_metrics
    input:
      app_name: "{{ parameters.app_name }}"
      environment: "{{ parameters.environment }}"
      thresholds:
        error_rate: 0.01
        latency_p99: 1000
        cpu_usage: 80
    on_success: update_load_balancer
    on_failure: handle_metrics_failures

  # ============================================================================
  # PHASE 7: TRAFFIC ROUTING
  # ============================================================================

  - name: update_load_balancer
    action: aws.update_load_balancer
    with_items: "{{ parameters.regions }}"
    input:
      app_name: "{{ parameters.app_name }}"
      region: "{{ item }}"
      target_version: "{{ parameters.version }}"
    on_success: finalize_deployment
    on_failure: handle_lb_update_failure

  # ============================================================================
  # PHASE 8: FINALIZATION
  # ============================================================================

  - name: finalize_deployment
    action: deployments.update_status
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      status: "success"
      metadata:
        version: "{{ parameters.version }}"
        regions: "{{ parameters.regions }}"
        duration: "{{ system.timestamp - workflow.start_time }}"
    publish:
      - successful_regions: "{{ parameters.regions }}"
    on_success: post_deployment_tasks

  - name: post_deployment_tasks
    type: parallel
    tasks:
      - name: update_service_catalog
        action: catalog.update_service_version
        input:
          app_name: "{{ parameters.app_name }}"
          version: "{{ parameters.version }}"
          environment: "{{ parameters.environment }}"

      - name: trigger_integration_tests
        action: testing.trigger_integration_suite
        input:
          app_name: "{{ parameters.app_name }}"
          environment: "{{ parameters.environment }}"

      - name: update_documentation
        action: docs.update_deployment_history
        input:
          app_name: "{{ parameters.app_name }}"
          version: "{{ parameters.version }}"
          deployment_id: "{{ workflow.deployment_id }}"
    on_complete: notify_deployment_success

  # ============================================================================
  # FAILURE HANDLERS
  # ============================================================================

  - name: handle_deployment_failures
    action: deployments.analyze_failures
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      failed_tasks: "{{ task.deploy_to_all_regions.failed_items }}"
    publish:
      - failed_regions: "{{ task.handle_deployment_failures.result.failed_regions }}"
    decision:
      - when: "{{ parameters.rollback_on_failure == true }}"
        next: rollback_all_regions
      - default: notify_partial_deployment

  - name: handle_health_check_failures
    action: diagnostics.analyze_health_failures
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      failed_urls: "{{ task.parallel_health_checks.failed_items }}"
    decision:
      - when: "{{ parameters.rollback_on_failure == true }}"
        next: rollback_all_regions
      - default: notify_health_check_failures

  - name: handle_smoke_test_failures
    action: testing.capture_smoke_test_results
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      results: "{{ task.run_smoke_tests.result }}"
    decision:
      - when: "{{ parameters.rollback_on_failure == true }}"
        next: rollback_all_regions
      - default: notify_smoke_test_failures

  - name: handle_metrics_failures
    action: monitoring.capture_metric_violations
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      violations: "{{ task.verify_metrics.result.violations }}"
    decision:
      - when: "{{ parameters.rollback_on_failure == true }}"
        next: rollback_all_regions
      - default: notify_metrics_failures

  - name: handle_lb_update_failure
    action: aws.diagnose_lb_failure
    input:
      regions: "{{ parameters.regions }}"
      error: "{{ task.update_load_balancer.error }}"
    on_complete: rollback_all_regions

  # ============================================================================
  # ROLLBACK PROCEDURES
  # ============================================================================

  - name: rollback_all_regions
    action: kubernetes.rollback_deployment
    with_items: "{{ parameters.regions }}"
    input:
      app_name: "{{ parameters.app_name }}"
      region: "{{ item }}"
      target_version: "previous"
    publish:
      - rollback_initiated: true
    on_success: update_deployment_rolled_back
    on_failure: notify_rollback_failed

  - name: update_deployment_rolled_back
    action: deployments.update_status
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      status: "rolled_back"
      metadata:
        reason: "deployment_failure"
        failed_regions: "{{ workflow.failed_regions }}"
    on_complete: notify_deployment_rolled_back

  # ============================================================================
  # CANCELLATION HANDLERS
  # ============================================================================

  - name: cancel_deployment
    action: deployments.update_status
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      status: "cancelled"
      metadata:
        reason: "approval_denied"
    on_complete: notify_deployment_cancelled

  - name: deployment_approval_timeout
    action: deployments.update_status
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      status: "cancelled"
      metadata:
        reason: "approval_timeout"
    on_complete: notify_approval_timeout

  - name: cleanup_failed_deployment
    action: deployments.cleanup_resources
    input:
      deployment_id: "{{ workflow.deployment_id }}"
      reason: "pre_deployment_checks_failed"
    on_complete: notify_deployment_failed

  # ============================================================================
  # NOTIFICATION TASKS
  # ============================================================================

  - name: notify_deployment_success
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        ✅ Deployment Successful
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Environment: {{ parameters.environment }}
        Regions: {{ workflow.successful_regions | join(', ') }}
        Duration: {{ system.timestamp - workflow.start_time }}s
        Deployment ID: {{ workflow.deployment_id }}
      metadata:
        severity: "info"
        deployment_id: "{{ workflow.deployment_id }}"

  - name: notify_deployment_failed
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email", "pagerduty"]
      message: |
        ❌ Deployment Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Environment: {{ parameters.environment }}
        Failed Regions: {{ workflow.failed_regions | join(', ') }}
        Deployment ID: {{ workflow.deployment_id }}
      metadata:
        severity: "error"
        deployment_id: "{{ workflow.deployment_id }}"

  - name: notify_deployment_rolled_back
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email", "pagerduty"]
      message: |
        ⚠️ Deployment Rolled Back
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Environment: {{ parameters.environment }}
        Rollback completed for all regions
        Deployment ID: {{ workflow.deployment_id }}"
      metadata:
        severity: "warning"
        deployment_id: "{{ workflow.deployment_id }}"

  - name: notify_deployment_cancelled
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        🚫 Deployment Cancelled
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Environment: {{ parameters.environment }}
        Reason: Approval denied
      metadata:
        severity: "info"

  - name: notify_approval_timeout
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        ⏱️ Deployment Approval Timeout
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Environment: {{ parameters.environment }}
        No approval received within 1 hour
      metadata:
        severity: "warning"

  - name: notify_validation_failed
    action: notifications.send_multi_channel
    input:
      channels: ["slack"]
      message: |
        ⚠️ Deployment Validation Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Error: {{ task.validate_inputs.error.message }}
      metadata:
        severity: "warning"

  - name: notify_build_failed
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        🔨 Build Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Error: {{ task.build_and_test.error.message }}
      metadata:
        severity: "error"

  - name: notify_build_timeout
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        ⏱️ Build Timeout
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Build exceeded 30 minute timeout
      metadata:
        severity: "error"

  - name: notify_push_failed
    action: notifications.send_multi_channel
    input:
      channels: ["slack"]
      message: |
        📦 Container Push Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Error: {{ task.push_container_image.error.message }}
      metadata:
        severity: "error"

  - name: notify_canary_failed
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        🐦 Canary Deployment Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Canary has been rolled back
        Metrics: {{ task.monitor_canary.result }}
      metadata:
        severity: "warning"

  - name: notify_partial_deployment
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email", "pagerduty"]
      message: |
        ⚠️ Partial Deployment
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Successful Regions: {{ workflow.successful_regions | join(', ') }}
        Failed Regions: {{ workflow.failed_regions | join(', ') }}
      metadata:
        severity: "error"

  - name: notify_health_check_failures
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        💔 Health Check Failures
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Failed URLs: {{ task.parallel_health_checks.failed_items | length }}
      metadata:
        severity: "error"

  - name: notify_smoke_test_failures
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        🧪 Smoke Tests Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Results: {{ task.run_smoke_tests.result.summary }}
      metadata:
        severity: "error"

  - name: notify_metrics_failures
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email"]
      message: |
        📊 Metrics Verification Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Violations: {{ task.verify_metrics.result.violations | length }}
      metadata:
        severity: "error"

  - name: notify_rollback_failed
    action: notifications.send_multi_channel
    input:
      channels: ["slack", "email", "pagerduty"]
      message: |
        🚨 CRITICAL: Rollback Failed
        Application: {{ parameters.app_name }}
        Version: {{ parameters.version }}
        Manual intervention required!
      metadata:
        severity: "critical"

# Workflow output mapping
output_map:
  deployment_id: "{{ workflow.deployment_id }}"
  status: "{{ workflow.rollback_initiated ? 'rolled_back' : 'success' }}"
  deployed_version: "{{ parameters.version }}"
  deployment_urls: "{{ workflow.health_check_urls }}"
  duration_seconds: "{{ system.timestamp - workflow.start_time }}"