name: Release PR

on:
  issue_comment:
    types: [created]

permissions: {}

jobs:
  release_check:
    if: github.repository == 'changesets/action' && github.event.issue.pull_request && startsWith(github.event.comment.body, '/release-pr')
    timeout-minutes: 5
    runs-on: ubuntu-latest

    permissions:
      contents: read
      issues: write
      pull-requests: read

    steps:
      - id: report_in_progress
        run: |
          echo "in_progress_reaction_id=$(gh api /repos/${{github.repository}}/issues/comments/${{github.event.comment.id}}/reactions -f content='eyes' --jq '.id')" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - id: parse_command
        run: |
          if [[ "$COMMENT_BODY" =~ ^/release-pr[[:space:]]+([0-9a-fA-F]{7,40})[[:space:]]*$ ]]
          then
            echo "requested_sha=${BASH_REMATCH[1]}" >> "$GITHUB_OUTPUT"
          else
            echo "Expected '/release-pr <sha>' where <sha> is a 7-40 character commit SHA."
            exit 1
          fi
        env:
          COMMENT_BODY: ${{ github.event.comment.body }}

      - id: check_authorization
        run: |
          if [[ $AUTHOR_ASSOCIATION == 'MEMBER' || $AUTHOR_ASSOCIATION == 'OWNER' || $AUTHOR_ASSOCIATION == 'COLLABORATOR' ]]
          then
            echo "User is authorized to release"
          else
            echo "User is not authorized to release"
            exit 1
          fi
        env:
          AUTHOR_ASSOCIATION: ${{ github.event.comment.author_association }}

      - id: resolve_requested_sha
        run: |
          requested_sha=$(echo "$REQUESTED_SHA" | tr '[:upper:]' '[:lower:]')

          mapfile -t matches < <(
            gh api /repos/${{ github.repository }}/pulls/${{ github.event.issue.number }}/commits --paginate --jq '.[].sha' |
              awk -v sha="$requested_sha" 'index(tolower($0), sha) == 1 { print $0 }'
          )

          if [[ ${#matches[@]} -eq 0 ]]
          then
            echo "Requested SHA $REQUESTED_SHA is not part of this pull request."
            exit 1
          fi

          if [[ ${#matches[@]} -gt 1 ]]
          then
            echo "Requested SHA $REQUESTED_SHA is ambiguous for this pull request."
            exit 1
          fi

          resolved_sha="${matches[0]}"
          pr_head_sha=$(gh pr view ${{ github.event.issue.number }} --json headRefOid --jq '.headRefOid')

          if [[ "$resolved_sha" != "$pr_head_sha" ]]
          then
            echo "Requested SHA $resolved_sha is not the current PR head $pr_head_sha."
            exit 1
          fi

          echo "resolved_sha=$resolved_sha" >> "$GITHUB_OUTPUT"
          echo "pr_head_sha=$pr_head_sha" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          REQUESTED_SHA: ${{ steps.parse_command.outputs.requested_sha }}

      - id: get_pr_head_repository
        run: |
          echo "head_repository=$(gh pr view ${{ github.event.issue.number }} --json headRepositoryOwner,headRepository --jq '.headRepositoryOwner.login + "/" + .headRepository.name')" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

    outputs:
      in_progress_reaction_id: ${{ steps.report_in_progress.outputs.in_progress_reaction_id }}
      requested_sha: ${{ steps.parse_command.outputs.requested_sha }}
      resolved_sha: ${{ steps.resolve_requested_sha.outputs.resolved_sha }}
      pr_head_sha: ${{ steps.resolve_requested_sha.outputs.pr_head_sha }}
      head_repository: ${{ steps.get_pr_head_repository.outputs.head_repository }}

  release:
    if: github.repository == 'changesets/action'
    timeout-minutes: 20
    runs-on: ubuntu-latest
    needs: release_check

    permissions:
      contents: write
      issues: write
      pull-requests: write

    steps:
      - name: Check out repo
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false

      - uses: ./.github/actions/ci-setup

      - name: Fetch validated commit from pull request head repository
        run: |
          git remote add pr-head https://github.com/$HEAD_REPOSITORY.git
          git fetch --no-tags pr-head $RESOLVED_SHA
        env:
          HEAD_REPOSITORY: ${{ needs.release_check.outputs.head_repository }}
          RESOLVED_SHA: ${{ needs.release_check.outputs.resolved_sha }}

      - name: Checkout validated commit
        run: git checkout --detach $RESOLVED_SHA
        env:
          RESOLVED_SHA: ${{ needs.release_check.outputs.resolved_sha }}

      - name: Check if Version Packages PR
        id: check_version_packages
        run: |
          echo "version_packages=$(gh pr view ${{ github.event.issue.number }} --json headRefName --jq '.headRefName|startswith("changeset-release/")')" >> "$GITHUB_OUTPUT"
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Reset Version Packages PR
        if: steps.check_version_packages.outputs.version_packages == 'true'
        run: git reset --hard HEAD~1

      - name: Create snapshot version
        run: pnpm changeset version --snapshot pr${{ github.event.issue.number }}
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Build
        run: pnpm build

      - name: Setup Git user
        run: |
          git config --global user.name "github-actions[bot]"
          git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"

      - name: Release snapshot version
        run: pnpm release:pr

      - name: Add success reaction
        run: gh api /repos/${{ github.repository }}/issues/comments/${{ github.event.comment.id }}/reactions -f content='rocket'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Remove in-progress reaction
        run: gh api -X DELETE /repos/${{ github.repository }}/issues/comments/${{ github.event.comment.id }}/reactions/${{ needs.release_check.outputs.in_progress_reaction_id }}
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Comment success
        run: |
          gh pr comment ${{ github.event.issue.number }} --body "The release for \`${{ needs.release_check.outputs.resolved_sha }}\` triggered by [this comment](${{ github.event.comment.url }}) has [succeeded](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}). Published commit: [${{ github.repository }}@$(git rev-parse HEAD)](https://github.com/${{ github.repository }}/commit/$(git rev-parse HEAD))."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  report-failure-if-needed:
    needs: [release_check, release]
    timeout-minutes: 2
    runs-on: ubuntu-latest
    if: failure() && github.repository == 'changesets/action' && (needs.release_check.result == 'failure' || needs.release.result == 'failure')

    permissions:
      issues: write
      pull-requests: write

    steps:
      - name: Add failure reaction
        run: gh api /repos/${{ github.repository }}/issues/comments/${{ github.event.comment.id }}/reactions -f content='-1'
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Remove in-progress reaction
        run: gh api -X DELETE /repos/${{ github.repository }}/issues/comments/${{ github.event.comment.id }}/reactions/${{ needs.release_check.outputs.in_progress_reaction_id }}
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Comment failure
        run: |
          gh pr comment ${{ github.event.issue.number }} --body "The release for \`${{ needs.release_check.outputs.requested_sha }}\` triggered by [this comment](${{ github.event.comment.url }}) has [failed](https://github.com/${{ github.repository }}/actions/runs/${{ github.run_id }})."
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GH_REPO: ${{ github.repository }}