# It's used for compilation with cache in Mac Host.

parameters:
- name: WithCache
  displayName: Build with Cache
  type: boolean
  default: false

- name: BuildStep
  type: stepList

# if WithCahe is false, the following parameters are not used.
- name: Today
  type: string
  default: ""

- name: AdditionalKey
  type: string
  default: ""

- name: CacheDir
  type: string
  default: ""

- name: ChangeEveryCommit
  type: boolean
  default: true

steps:
  - script: |
      which ccache || brew install ccache
      # Do not output ##vso[] commands with `set -x` or they may be parsed again and include a trailing quote.
      set +x
      echo "##vso[task.prependpath]/usr/local/opt/ccache/libexec"
      mkdir -p "${{ parameters.CacheDir }}"
    displayName: Install ccache and update PATH to use linked versions of gcc, cc, etc
    condition: eq(${{ parameters.WithCache }}, true)

  - task: Cache@2
    inputs:
      ${{ if eq(parameters.ChangeEveryCommit, true) }}:
        # If it's a merge build, the run will read the cache generated by main build.
        ${{if eq(variables['Build.SourceBranchName'], 'merge')}}:
          key: ' "$(TODAY)" | ccache  | merge '
        ${{else}}:
          key:  ' "${{parameters.Today}}" | ${{parameters.AdditionalKey}} | "$(Build.SourceVersion)" '
        restoreKeys: |
          "${{parameters.Today}}" | ${{parameters.AdditionalKey}}
      ${{ else }}:
        key:  ' ${{parameters.AdditionalKey}} '
        restoreKeys: |
          ${{parameters.AdditionalKey}}
      path: ${{ parameters.CacheDir }}
    displayName: ccache task
    condition: eq(${{ parameters.WithCache }}, true)

  - ${{ parameters.BuildStep }}

  - ${{ if eq(parameters.WithCache, true) }}:
    - template: check-cache-stats.yml
      parameters:
        CacheDir: ${{ parameters.CacheDir }}