name: 'Fetch Submodules'

inputs:
  target:
    description: 'The target for ci_fetch_deps'
    required: false
    type: string

  submodules:
    description: 'The submodules to cache'
    required: false
    default: '["extmod/ulab", "lib/", "tools/"]'
    type: string

  action:
    description: 'The cache action to use'
    required: false
    default: 'restore'
    type: choice
    options:
    - cache
    - restore

  version:
    description: 'Whether to generate CP version'
    required: false
    default: false
    type: boolean

outputs:
  frozen:
    description: 'Whether frozen submodules were fetched'
    value: ${{ steps.cp-deps.outputs.frozen_tags }}

  version:
    description: 'The CP version'
    value: ${{ steps.cp-version.outputs.cp-version }}

runs:
  using: "composite"
  steps:
    - name: Create submodule status
      id: create-submodule-status
      run: |
        git submodule status ${{ join(fromJSON(inputs.submodules), ' ') }} >> submodule_status
        echo $(cut -d ' ' -f 2 submodule_status) | echo "submodules=[\"$(sed "s/ /\", \"/g")\"]" >> $GITHUB_OUTPUT
      shell: bash

    - name: Cache submodules
      if: ${{ inputs.action == 'cache' }}
      uses: actions/cache@v3
      with:
        path: ".git/modules/\n${{ join(fromJSON(steps.create-submodule-status.outputs.submodules), '\n') }}"
        key: submodules-common-${{ hashFiles('submodule_status') }}
        enableCrossOsArchive: true

    - name: Restore submodules
      if: ${{ inputs.action == 'restore' }}
      uses: actions/cache/restore@v3
      with:
        path: ".git/modules/\n${{ join(fromJSON(steps.create-submodule-status.outputs.submodules), '\n') }}"
        key: submodules-common-${{ hashFiles('submodule_status') }}
        enableCrossOsArchive: true

    - name: Remove submodule status
      run: rm submodule_status
      shell: bash

    - name: CircuitPython dependencies
      id: cp-deps
      run: python tools/ci_fetch_deps.py ${{ inputs.target || matrix.board || github.job }}
      shell: bash

    - name: CircuitPython version
      id: cp-version
      if: ${{ inputs.version == 'true' }}
      run: |
        echo "::group::Fetch history and tags"
        git fetch --no-recurse-submodules --shallow-since="2021-07-01" --tags https://github.com/adafruit/circuitpython HEAD
        git fetch --no-recurse-submodules --shallow-since="2021-07-01" origin $GITHUB_SHA
        git repack -d
        echo "::endgroup::"
        CP_VERSION=$(tools/describe)
        echo "$CP_VERSION"
        echo "CP_VERSION=$CP_VERSION" >> $GITHUB_ENV
        echo "cp-version=$CP_VERSION" >> $GITHUB_OUTPUT
      shell: bash