.github/workflows/get-pr-info.yml

name: Get PR commit SHA
on:
  workflow_call:
    inputs:
      pr_number:
        required: true
        type: string
    outputs:
      PR_HEAD_REPO_FULL_NAME:
        description: "The full name of the repository from which the pull request is created"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_REPO_FULL_NAME }}
      PR_BASE_REPO_FULL_NAME:
        description: "The full name of the repository to which the pull request is created"
        value: ${{ jobs.get-pr-info.outputs.PR_BASE_REPO_FULL_NAME }}
      PR_HEAD_REPO_OWNER:
        description: "The owner of the repository from which the pull request is created"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_REPO_OWNER }}
      PR_BASE_REPO_OWNER:
        description: "The owner of the repository to which the pull request is created"
        value: ${{ jobs.get-pr-info.outputs.PR_BASE_REPO_OWNER }}
      PR_HEAD_REPO_NAME:
        description: "The name of the repository from which the pull request is created"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_REPO_NAME }}
      PR_BASE_REPO_NAME:
        description: "The name of the repository to which the pull request is created"
        value: ${{ jobs.get-pr-info.outputs.PR_BASE_REPO_NAME }}
      PR_HEAD_REF:
        description: "The branch name of the pull request in the head repository"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_REF }}
      PR_BASE_REF:
        description: "The branch name in the base repository (to merge into)"
        value: ${{ jobs.get-pr-info.outputs.PR_BASE_REF }}
      PR_HEAD_SHA:
        description: "The head sha of the pull request branch in the head repository"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_SHA }}
      PR_BASE_SHA:
        description: "The head sha of the target branch in the base repository"
        value: ${{ jobs.get-pr-info.outputs.PR_BASE_SHA }}
      PR_MERGE_COMMIT_SHA:
        description: "The sha of the merge commit for the pull request (created by GitHub) in the base repository"
        value: ${{ jobs.get-pr-info.outputs.PR_MERGE_COMMIT_SHA }}
      PR_MERGE_COMMIT_BASE_SHA:
        description: "The sha of the parent commit of the merge commit on the target branch in the base repository"
        value: ${{ jobs.get-pr-info.outputs.PR_MERGE_COMMIT_BASE_SHA }}
      PR_HEAD_COMMIT_DATE:
        description: "The date of the head sha of the pull request branch in the head repository"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_COMMIT_DATE }}
      PR_MERGE_COMMIT_DATE:
        description: "The date of the merge commit for the pull request (created by GitHub) in the base repository"
        value: ${{ jobs.get-pr-info.outputs.PR_MERGE_COMMIT_DATE }}
      PR_HEAD_COMMIT_TIMESTAMP:
        description: "The timestamp of the head sha of the pull request branch in the head repository"
        value: ${{ jobs.get-pr-info.outputs.PR_HEAD_COMMIT_TIMESTAMP }}
      PR_MERGE_COMMIT_TIMESTAMP:
        description: "The timestamp of the merge commit for the pull request (created by GitHub) in the base repository"
        value: ${{ jobs.get-pr-info.outputs.PR_MERGE_COMMIT_TIMESTAMP }}
      PR:
        description: "The PR"
        value: ${{ jobs.get-pr-info.outputs.PR }}
      PR_FILES:
        description: "The files touched in the PR"
        value: ${{ jobs.get-pr-info.outputs.PR_FILES }}


jobs:
  get-pr-info:
    runs-on: ubuntu-22.04
    name: Get PR commit SHA better
    outputs:
      PR_HEAD_REPO_FULL_NAME: ${{ steps.pr_info.outputs.head_repo_full_name }}
      PR_BASE_REPO_FULL_NAME: ${{ steps.pr_info.outputs.base_repo_full_name }}
      PR_HEAD_REPO_OWNER: ${{ steps.pr_info.outputs.head_repo_owner }}
      PR_BASE_REPO_OWNER: ${{ steps.pr_info.outputs.base_repo_owner }}
      PR_HEAD_REPO_NAME: ${{ steps.pr_info.outputs.head_repo_name }}
      PR_BASE_REPO_NAME: ${{ steps.pr_info.outputs.base_repo_name }}
      PR_HEAD_REF: ${{ steps.pr_info.outputs.head_ref }}
      PR_BASE_REF: ${{ steps.pr_info.outputs.base_ref }}
      PR_HEAD_SHA: ${{ steps.pr_info.outputs.head_sha }}
      PR_BASE_SHA: ${{ steps.pr_info.outputs.base_sha }}
      PR_MERGE_COMMIT_BASE_SHA: ${{ steps.pr_info.outputs.merge_commit_base_sha }}
      PR_MERGE_COMMIT_SHA: ${{ steps.pr_info.outputs.merge_commit_sha }}
      PR_HEAD_COMMIT_DATE: ${{ steps.pr_info.outputs.head_commit_date }}
      PR_MERGE_COMMIT_DATE: ${{ steps.pr_info.outputs.merge_commit_date }}
      PR_HEAD_COMMIT_TIMESTAMP: ${{ steps.get_timestamps.outputs.head_commit_timestamp }}
      PR_MERGE_COMMIT_TIMESTAMP: ${{ steps.get_timestamps.outputs.merge_commit_timestamp }}
      PR: ${{ steps.pr_info.outputs.pr }}
      PR_FILES: ${{ steps.pr_info.outputs.files }}
    if: ${{ inputs.pr_number != '' }}
    steps:
      - name: Extract PR details
        id: pr_info
        uses: actions/github-script@v6
        with:
          script: |            
            const { data: pr } = await github.rest.pulls.get({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: ${{ inputs.pr_number }}
            });

            const { data: head_commit }  = await github.rest.repos.getCommit({
              owner: pr.head.repo.owner.login,
              repo: pr.head.repo.name,
              ref: pr.head.ref
            });

            const { data: merge_commit }  = await github.rest.repos.getCommit({
              owner: pr.base.repo.owner.login,
              repo: pr.base.repo.name,
              ref: pr.merge_commit_sha,
            });

            const { data: files } = await github.rest.pulls.listFiles({
              owner: context.repo.owner,
              repo: context.repo.repo,
              pull_number: ${{ inputs.pr_number }}
            });

            core.setOutput('head_repo_full_name', pr.head.repo.full_name);
            core.setOutput('base_repo_full_name', pr.base.repo.full_name);
            core.setOutput('head_repo_owner', pr.head.repo.owner.login);
            core.setOutput('base_repo_owner', pr.base.repo.owner.login);
            core.setOutput('head_repo_name', pr.head.repo.name);
            core.setOutput('base_repo_name', pr.base.repo.name);
            core.setOutput('head_ref', pr.head.ref);
            core.setOutput('base_ref', pr.base.ref);
            core.setOutput('head_sha', pr.head.sha);
            core.setOutput('base_sha', pr.base.sha);
            core.setOutput('merge_commit_base_sha', merge_commit.parents[0].sha);
            core.setOutput('merge_commit_sha', pr.merge_commit_sha);
            core.setOutput('pr', pr);

            core.setOutput('head_commit_date', head_commit.commit.committer.date);
            core.setOutput('merge_commit_date', merge_commit.commit.committer.date);
            
            core.setOutput('files', files);            
            
            console.log('PR head commit:', {
              head_commit: head_commit,
              commit: head_commit.commit,
              date: head_commit.commit.committer.date
            });

            console.log('PR merge commit:', {
              merge_commit: merge_commit,
              commit: merge_commit.commit,
              date: merge_commit.commit.committer.date
            });

            console.log('PR Info:', {
              pr_info: pr
            });

      - name: Convert dates to timestamps
        id: get_timestamps
        env:
          head_commit_date: ${{ steps.pr_info.outputs.head_commit_date }}
          merge_commit_date: ${{ steps.pr_info.outputs.merge_commit_date }}
        run: |
          echo "$head_commit_date"
          echo "$merge_commit_date"
          head_commit_timestamp=$(date -d "$head_commit_date" +%s)
          merge_commit_timestamp=$(date -d "$merge_commit_date" +%s)
          echo "$head_commit_timestamp"
          echo "$merge_commit_timestamp"
          echo "head_commit_timestamp=$head_commit_timestamp" >> $GITHUB_OUTPUT
          echo "merge_commit_timestamp=$merge_commit_timestamp" >> $GITHUB_OUTPUT