action.yaml

name: Get Bicep Modules
description: Gets list of Bicep modules. It will only output modules where the 'version.json' is modified.

inputs:
  root-path:
    description: The root path for the modules.
    required: true

  module-name:
    description: "The name of the module. This should include the full relative path below the root-path, not including any leading or trailing '/'. Example: 'subnet' or 'modules/subnet'."
    required: false

outputs:
  module-names:
    description: A list of module names. Relative to the input root-path.
    value: ${{ steps.get-module-names.outputs.module-names }}

runs:
  using: composite
  steps:
    - name: Get Changed Files
      id: changed-files
      uses: tj-actions/changed-files@v44
      with:
        json: true
        escape_json: false
        files: ${{ inputs.root-path }}/**/version.json
        separator: "|"

    - name: Get module names
      shell: pwsh
      id: get-module-names
      env:
        rootPath: ${{ inputs.root-path }}
        moduleName: ${{ inputs.module-name }}
        changedFiles: ${{ steps.changed-files.outputs.all_changed_files }}
      run: |
        #* Get module names

        $moduleNames = @()
        if ($env:moduleName -and $env:moduleName -ne '') {
          $moduleNames += $env:moduleName
        }
        else {
          $changedFiles = $env:changedFiles | ConvertFrom-Json

          foreach ($changedFile in $changedFiles) {
            $item = Get-Item $changedFile
            Push-Location $env:rootPath
            $moduleRelativePath = Resolve-Path -Relative $item.Directory.FullName
            $moduleNames += $moduleRelativePath.Trim(".").Trim("/")
            Pop-Location
          }
        }

        #* Ensure well formed json array
        $json = , $moduleNames | ConvertTo-Json -Compress

        #* Write outputs
        Write-Output "module-names=$json" >> $env:GITHUB_OUTPUT