action.yml

name: 'PSWattTime for Azure regions'
description: 'Get Azure region with optimal carbon emissions from a given set'
branding:
  icon: 'loader'
  color: 'green'
inputs:
  azure_credential:
    description: Azure credential secret for azure/login@v1 action
    required: true
  regions:
    description: Comma seperated list of Azure regions to check for current emissions
    required: false
    default: '"westeurope","northeurope"'
  watttime_username:
    description: Username for registered watttime.org account
    required: true
  watttime_password:
    description: Password for registered watttime.org account
    required: true
outputs:
  region:
    description: Azure region with the best emissions
    value: ${{ steps.invokewatttime.outputs.region}}
  percent:
    description: Percentage of energy with carbon emissions
    value: ${{ steps.invokewatttime.outputs.percent }}
runs:
  using: composite
  steps:
    - id: azurelogin
      uses: azure/login@v1
      with:
        creds: ${{ inputs.azure_credential }}
        enable-AzPSSession: true
    - id: invokewatttime
      shell: pwsh
      run: |
        Set-PSRepository PSGallery -InstallationPolicy Trusted
        Install-Module Az.Resources
        Import-Module Az.Resources
        Import-Module ${{ github.action_path }}/src/PSWattTime
        $token = Get-WattTimeAuthToken -Username ${{ inputs.watttime_username }} -Password ${{ inputs.watttime_password }}
        $result = Get-AzureRegionWithLowestWattTime -Regions ${{ inputs.regions }} -AuthToken $token
        "region=$($result.region)" >> $env:GITHUB_OUTPUT
        "percent=$($result.percent)" >> $env:GITHUB_OUTPUT
        Write-Output "### PSWattTime Azure Region selection" >> $env:GITHUB_STEP_SUMMARY
        Write-Output "" >> $env:GITHUB_STEP_SUMMARY
        Write-Output "- Azure region with lowest emissions: **$($result.region)**" >> $env:GITHUB_STEP_SUMMARY
        Write-Output "- Emissions percentage: **$($result.percent)**" >> $env:GITHUB_STEP_SUMMARY