# Syntax: iif(condition, valueIfTrue, valueIfFalse)

variables:
  environment: 'production'
  # Use iif for conditional values
  instanceCount: ${{ iif(eq(variables.environment, 'production'), 10, 2) }}
  deploymentSlot: ${{ iif(eq(variables.environment, 'production'), 'production', 'staging') }}

steps:
- script: echo "Deploying ${{ variables.instanceCount }} instances to ${{ variables.deploymentSlot }}"

parameters:
- name: branchName
  type: string
  default: ' feature/my-branch '

variables:
  # Remove leading/trailing whitespace
  cleanBranch: ${{ trim(parameters.branchName) }}
  # Result: 'feature/my-branch' (no spaces)

stages:
- stage: Deploy
  jobs:
  - job: DeployJob
    steps:
    - script: |
        echo "Stage requested by: $(Build.StageRequestedBy)"
        echo "Stage requester ID: $(Build.StageRequestedById)"
      displayName: 'Log stage requester'

    # Use for approval notifications
    - task: SendEmail@1
      inputs:
        to: 'approvers@example.com'
        subject: 'Deployment requested by $(Build.StageRequestedBy)'

stages:
- stage: Build
  jobs:
  - job: BuildJob
    steps:
    - script: echo "Building..."

- stage: Test
  dependsOn: Build  # Shown visually when expanded
  jobs:
  - job: TestJob
    steps:
    - script: echo "Testing..."

- stage: Deploy_USEast
  dependsOn: Test
  jobs:
  - job: DeployJob
    steps:
    - script: echo "Deploying to US East..."

- stage: Deploy_EUWest
  dependsOn: Test  # Parallel with Deploy_USEast - visualized clearly
  jobs:
  - job: DeployJob
    steps:
    - script: echo "Deploying to EU West..."

pool:
  vmImage: 'ubuntu-24.04'  # Latest LTS - Recommended
  # OR use ubuntu-latest (will map to 24.04 soon)
  # vmImage: 'ubuntu-latest'

steps:
- script: |
    lsb_release -a
    # Ubuntu 24.04 LTS (Noble Numbat)

pool:
  vmImage: 'windows-2025'  # GA: June 16, 2025

steps:
- pwsh: |
    Get-ComputerInfo | Select-Object WindowsProductName, WindowsVersion

pool:
  vmImage: 'macOS-15'  # Sequoia

steps:
- script: |
    sw_vers
    # macOS 15.x (Sequoia)

# Ubuntu Migration
# OLD (Removed)
pool:
  vmImage: 'ubuntu-20.04'

# NEW (Recommended)
pool:
  vmImage: 'ubuntu-24.04'  # Best: explicit version
  # OR
  vmImage: 'ubuntu-latest'  # Will map to 24.04 soon

# Windows Migration
# OLD (Being deprecated)
pool:
  vmImage: 'windows-2019'

# NEW (Recommended)
pool:
  vmImage: 'windows-2022'  # Current stable
  # OR wait for
  vmImage: 'windows-2025'  # GA June 2025

# When PR is created for branch linked to work item,
# PR automatically appears in work item's Development section

trigger:
  branches:
    include:
    - feature/*
    - users/*

# Work item auto-linking based on branch name pattern
# AB#12345 in commits auto-links to work item 12345

pr:
  branches:
    include:
    - main
    - develop

# After PR merged, work item shows:
# "Integrated in build: Pipeline Name #123"
# Direct link to build that deployed the change

stages:
- stage: Build
  variables:
    buildConfiguration: 'Release'
    platform: 'x64'
  jobs:
  - job: BuildJob
    steps:
    - script: echo "Building $(buildConfiguration) $(platform)"

- stage: Deploy
  variables:
    environment: 'production'
    region: 'eastus'
  jobs:
  - job: DeployJob
    steps:
    - script: |
        echo "Stage: $(System.StageName)"
        echo "Requested by: $(Build.StageRequestedBy)"
        echo "Deploying to $(environment) in $(region)"

parameters:
- name: deployToProd
  type: boolean
  default: false

variables:
  # Use iif for conditional values
  targetEnvironment: ${{ iif(parameters.deployToProd, 'production', 'staging') }}

stages:
- stage: Build
  jobs:
  - job: BuildApp
    pool:
      vmImage: 'ubuntu-24.04'  # New image
    steps:
    - script: npm run build

- stage: Test
  dependsOn: Build
  jobs:
  - job: RunTests
    pool:
      vmImage: 'ubuntu-24.04'
    steps:
    - script: npm test

- stage: Deploy_USEast
  dependsOn: Test
  condition: succeeded()
  variables:
    region: 'eastus'
  jobs:
  - deployment: DeployToUSEast
    environment: ${{ variables.targetEnvironment }}
    pool:
      vmImage: 'ubuntu-24.04'
    strategy:
      runOnce:
        deploy:
          steps:
          - script: |
              echo "Deploying to $(region)"
              echo "Requested by: $(Build.StageRequestedBy)"

- stage: Deploy_EUWest
  dependsOn: Test  # Parallel with Deploy_USEast
  condition: succeeded()
  variables:
    region: 'westeurope'
  jobs:
  - deployment: DeployToEUWest
    environment: ${{ variables.targetEnvironment }}
    pool:
      vmImage: 'ubuntu-24.04'
    strategy:
      runOnce:
        deploy:
          steps:
          - script: |
              echo "Deploying to $(region)"
              echo "Requested by: $(Build.StageRequestedBy)"

# Stage dependencies visualized clearly in UI (Sprint 254)

# Your pipeline with CAE enabled automatically
stages:
  - stage: Production
    jobs:
      - deployment: Deploy
        environment: 'production'
        pool:
          vmImage: 'ubuntu-24.04'
        strategy:
          runOnce:
            deploy:
              steps:
                - script: echo "Deploying..."
                  # If user credentials are revoked mid-deployment,
                  # CAE will instantly terminate access

# Use service connections with Microsoft Entra ID instead
- task: AzureCLI@2
  inputs:
    azureSubscription: 'service-connection'  # Uses Managed Identity or Service Principal
    scriptType: 'bash'
    scriptLocation: 'inlineScript'
    addSpnToEnvironment: true
    inlineScript: |
      az account show

# Replace OAuth apps with Microsoft Entra ID authentication
# Use service connections with Managed Identity or Service Principal
- task: AzureCLI@2
  inputs:
    azureSubscription: 'entra-id-service-connection'
    scriptType: 'bash'
    addSpnToEnvironment: true
    inlineScript: |
      az account show
      # Authenticated via Entra ID

# Self-hosted ARM64 agent
pool:
  name: 'arm64-pool'
  demands:
    - agent.os -equals Linux
    - Agent.OSArchitecture -equals ARM64

steps:
  - script: uname -m
    displayName: 'Verify ARM64 architecture'

# Work items auto-link with PRs
trigger:
  branches:
    include:
    - feature/*

# Mention work item in commit
# Example: "Fix login bug AB#12345"
# Automatically links PR to work item and tracks in build