action.yml

name: 'PSElectricityMaps for Azure regions'
description: 'Get Azure region with optimal carbon emissions from a given set'
author: 'Roderick Bant'
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"'
  signal_token:
    description: Auth token from CO2 Signal
    required: true
outputs:
  region:
    description: Azure region with the best emissions
    value: ${{ steps.invokesignal.outputs.region}}
  fossilFuelPercentage:
    description: Percentage of fossil fuel carbon emissions
    value: ${{ steps.invokesignal.outputs.FossilFuelPercentage }}
runs:
  using: composite
  steps:
    - id: azurelogin
      uses: azure/login@v1
      with:
        creds: ${{ inputs.azure_credential }}
        enable-AzPSSession: true
    - id: invokesignal
      shell: pwsh
      run: |
        Set-PSRepository PSGallery -InstallationPolicy Trusted
        Install-Module Az.Resources
        Import-Module Az.Resources
        Import-Module ${{ github.action_path }}/src/PSElectricityMaps
        $result = Get-ElectricityMapsBestAzureRegion -Regions ${{ inputs.regions }} -AuthToken ${{ inputs.signal_token }}
        "region=$($result.Region)" >> $env:GITHUB_OUTPUT
        "fossilFuelPercentage=$($result.FossilFuelPercentage)" >> $env:GITHUB_OUTPUT
        Write-Output "### PSElectricityMaps Azure Region selection" >> $env:GITHUB_STEP_SUMMARY
        Write-Output "" >> $env:GITHUB_STEP_SUMMARY
        Write-Output "- Azure region with lowest emissions: **$($result.Region)**" >> $env:GITHUB_STEP_SUMMARY
        Write-Output "- Fossil fuel percentage: **$($result.FossilFuelPercentage)**" >> $env:GITHUB_STEP_SUMMARY