# Copyright Advanced Micro Devices, Inc.
# SPDX-License-Identifier: MIT

name: "Compute PR-aware fetch-depth"

description: >-
  Returns the smallest `actions/checkout` fetch-depth that covers all
  commits this workflow needs to walk.

  * pull_request events: `commits + 1` (PR commits + merge-base).
  * any other event (push, schedule, workflow_dispatch, ...): `0`
    (full history). Use this when downstream tooling walks commit
    history

outputs:
  value:
    description: >-
      String value to pass to actions/checkout fetch-depth. Already
      coerced to a string so it composes cleanly with checkout's
      input parser.
    value: ${{ steps.compute.outputs.value }}

runs:
  using: "composite"
  steps:
    - name: Compute fetch-depth
      id: compute
      shell: bash
      run: python build_tools/github_actions/compute_pr_depth.py