# https://github.com/Homebrew/homebrew-core/blob/8b4101be35fb7053e2026edcf1f7d218a5ac3379/.github/workflows/dispatch-rebottle.yml#L4
name: Dispatch rebottle (for all currently bottled OS versions)

run-name: Rebuild bottles of ${{ inputs.formula }}

on:
  workflow_dispatch:
    inputs:
      formula:
        description: Formula name
        required: true
      reason:
        description: Reason for rebottling
        required: true
      timeout:
        description: "Build timeout (in minutes, default: 60 minutes)"
        type: number
        default: 60
        required: false
      issue:
        description: Issue number, where comment on failure would be posted
        type: number
        required: false
      upload:
        description: "Upload built bottles? (default: false)"
        type: boolean
        default: false
        required: false
      fail-fast:
        description: "Fail immediately on a single OS version failure? (default: true)"
        type: boolean
        default: true
        required: false

# Intentionally the same as dispatch-build-bottle
concurrency: bottle-${{ github.event.inputs.formula }}

permissions:
  contents: read

env:
  HOMEBREW_DEVELOPER: 1
  HOMEBREW_GITHUB_ACTIONS: 1
  HOMEBREW_NO_AUTO_UPDATE: 1
  HOMEBREW_NO_INSTALL_FROM_API: 1
  HOMEBREW_NO_BUILD_ERROR_ISSUES: 1
  RUN_URL: ${{github.event.repository.html_url}}/actions/runs/${{github.run_id}}
  DISPATCH_REBOTTLE_SENDER: ${{ github.event.sender.login }}
  DISPATCH_REBOTTLE_FORMULA: ${{ inputs.formula }}
  DISPATCH_REBOTTLE_TIMEOUT: ${{ inputs.timeout }}
  DISPATCH_REBOTTLE_ISSUE: ${{ inputs.issue }}
  DISPATCH_REBOTTLE_UPLOAD: ${{ inputs.upload }}
  DISPATCH_REBOTTLE_REASON: ${{ inputs.reason }}

jobs:
  setup:
    runs-on: ubuntu-22.04
    container:
      image: ghcr.io/homebrew/ubuntu22.04:master
    outputs:
      runners: ${{steps.determine-runners.outputs.runners}}
    steps:
      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          core: true
          cask: false
          test-bot: false

      - name: Determine runners
        id: determine-runners
        run: brew determine-rebottle-runners "${DISPATCH_REBOTTLE_FORMULA}" "${DISPATCH_REBOTTLE_TIMEOUT}"

  bottle:
    permissions:
      contents: read
    needs: setup
    strategy:
      matrix:
        include: ${{fromJson(needs.setup.outputs.runners)}}
      fail-fast: ${{inputs.fail-fast}}
    runs-on: ${{matrix.runner}}
    container: ${{matrix.container}}
    timeout-minutes: ${{fromJson(inputs.timeout)}}
    defaults:
      run:
        shell: /bin/bash -e {0}
        working-directory: ${{matrix.workdir || github.workspace}}
    env:
      GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
      BOTTLES_DIR: ${{ matrix.workdir || github.workspace }}/bottles
    steps:
      - name: ${{inputs.formula}}
        id: print_details
        run: |
          echo sender="${DISPATCH_REBOTTLE_SENDER}"
          echo formula="${DISPATCH_REBOTTLE_FORMULA}"
          echo timeout="${DISPATCH_REBOTTLE_TIMEOUT}"
          echo issue="${DISPATCH_REBOTTLE_ISSUE}"
          echo upload="${DISPATCH_REBOTTLE_UPLOAD}"
          echo reason="${DISPATCH_REBOTTLE_REASON}"

      - name: Pre-test steps
        uses: Homebrew/actions/pre-build@master
        with:
          bottles-directory: ${{ env.BOTTLES_DIR }}

      - run: |
          brew test-bot --only-formulae --only-json-tab --skip-online-checks \
                        --skip-dependents \
                        "${DISPATCH_REBOTTLE_FORMULA}"
        working-directory: ${{ env.BOTTLES_DIR }}
        env:
          HOMEBREW_GITHUB_API_TOKEN: ${{secrets.GITHUB_TOKEN}}

      - name: Post-build steps
        if: always()
        uses: Homebrew/actions/post-build@master
        with:
          runner: ${{ matrix.runner }}
          bottles-directory: ${{ env.BOTTLES_DIR }}
          logs-directory: ${{ env.BOTTLES_DIR }}/logs

  upload:
    permissions:
      issues: write # for Homebrew/actions/post-comment
      contents: write # for Homebrew/actions/git-try-push
      packages: write # for brew pr-upload
      pull-requests: write # for gh pr
      attestations: write # for actions/attest-build-provenance
      id-token: write # for actions/attest-build-provenance
    runs-on: ubuntu-22.04
    needs: bottle
    if: inputs.upload
    container:
      image: ghcr.io/homebrew/ubuntu22.04:master
    defaults:
      run:
        shell: bash
    env:
      HOMEBREW_SIMULATE_MACOS_ON_LINUX: 1
      GH_REPO: ${{github.repository}}
      GH_NO_UPDATE_NOTIFIER: 1
      GH_PROMPT_DISABLED: 1
      BOTTLE_BRANCH: ${{github.actor}}/dispatch/${{inputs.formula}}/${{github.run_id}}
      BOTTLES_DIR: ${{ github.workspace }}/bottles
    steps:
      - name: Set up Homebrew
        id: set-up-homebrew
        uses: Homebrew/actions/setup-homebrew@master
        with:
          core: true
          cask: false
          test-bot: false

      - name: Download bottles from GitHub Actions
        uses: actions/download-artifact@v4
        with:
          pattern: bottles_*
          path: ${{ env.BOTTLES_DIR }}
          merge-multiple: true

      - name: Setup git
        id: git-user-config
        uses: Homebrew/actions/git-user-config@master
        with:
          username: ${{ (github.actor != 'github-actions[bot]' && github.actor) || 'BrewTestBot' }}

      - name: Set up commit signing
        uses: Homebrew/actions/setup-commit-signing@master
        with:
          signing_key: ${{ secrets.BREWTESTBOT_GPG_SIGNING_SUBKEY }}

      - name: Generate build provenance
        uses: actions/attest-build-provenance@v1
        with:
          subject-path: ${{ env.BOTTLES_DIR }}/*.tar.gz

      - name: Checkout branch for bottle commit
        working-directory: ${{steps.set-up-homebrew.outputs.repository-path}}
        run: git checkout -b "$BOTTLE_BRANCH" origin/master

      - name: Upload bottles to GitHub Packages
        id: upload
        env:
          HOMEBREW_GITHUB_PACKAGES_USER: brewtestbot
          HOMEBREW_GITHUB_PACKAGES_TOKEN: ${{secrets.HOMEBREW_CORE_GITHUB_PACKAGES_TOKEN}}
          HOMEBREW_GPG_PASSPHRASE: ${{ secrets.BREWTESTBOT_GPG_SIGNING_SUBKEY_PASSPHRASE }}
          BREWTESTBOT_NAME_EMAIL: "BrewTestBot <1589480+BrewTestBot@users.noreply.github.com>"
          HOMEBREW_CORE_PATH: ${{steps.set-up-homebrew.outputs.repository-path}}
        working-directory: ${{ env.BOTTLES_DIR }}
        run: |
          brew pr-upload --verbose --committer="$BREWTESTBOT_NAME_EMAIL" --root-url="https://ghcr.io/v2/homebrew/core" --debug
          echo "title=$(git -C "$HOMEBREW_CORE_PATH" log -1 --format='%s' "$BOTTLE_BRANCH")" >> "$GITHUB_OUTPUT"
          echo "head_sha=$(git -C "$HOMEBREW_CORE_PATH" rev-parse HEAD)" >> "$GITHUB_OUTPUT"

      - name: Push commits
        uses: Homebrew/actions/git-try-push@master
        with:
          token: ${{secrets.GITHUB_TOKEN}}
          directory: ${{steps.set-up-homebrew.outputs.repository-path}}
          branch: ${{env.BOTTLE_BRANCH}}
        env:
          GIT_COMMITTER_NAME: BrewTestBot
          GIT_COMMITTER_EMAIL: 1589480+BrewTestBot@users.noreply.github.com
          HOMEBREW_GPG_PASSPHRASE: ${{ secrets.BREWTESTBOT_GPG_SIGNING_SUBKEY_PASSPHRASE }}

      - name: Open PR with bottle commit
        id: create-pr
        uses: Homebrew/actions/create-pull-request@master
        with:
          token: ${{secrets.HOMEBREW_GITHUB_PUBLIC_REPO_TOKEN}}
          base: ${{github.ref}}
          head: ${{env.BOTTLE_BRANCH}}
          title: ${{steps.upload.outputs.title}}
          body: |
            Created by [`dispatch-rebottle.yml`](${{env.RUN_URL}})

            -----

            ${{env.DISPATCH_REBOTTLE_REASON}}
          labels: CI-published-bottle-commits
          reviewers: ${{github.actor}}

      - name: Enable automerge
        env:
          GH_TOKEN: ${{secrets.HOMEBREW_GITHUB_PUBLIC_REPO_TOKEN}}
          NODE_ID: ${{steps.create-pr.outputs.node_id}}
          SHA: ${{steps.upload.outputs.head_sha}}
          MUTATION: |-
            mutation ($input: EnablePullRequestAutoMergeInput!) {
              enablePullRequestAutoMerge(input: $input) {
                clientMutationId
              }
            }
        run: |
          gh api graphql \
            --field "input[pullRequestId]=$NODE_ID" \
            --field "input[expectedHeadOid]=$SHA" \
            --raw-field query="$MUTATION"

      - name: Approve PR
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR: ${{steps.create-pr.outputs.number}}
        run: |
          gh api \
            --method POST \
            --header "Accept: application/vnd.github+json" \
            --header "X-GitHub-Api-Version: 2022-11-28" \
            "/repos/$GITHUB_REPOSITORY/pulls/$PR/reviews" \
            --field "event=APPROVE"

      - name: Wait until PR is merged
        env:
          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          PR: ${{ steps.create-pr.outputs.number }}
        run: |
          # Hold the `concurrency` lock for up to another 10 minutes while the PR has not yet been merged.
          sleep 300

          attempt=0
          max_attempts=5
          sleep_time=10

          while (( attempt < max_attempts ))
          do
            if jq --exit-status .merged_at
            then
              break
            fi < <( # We could use `gh pr view`, but that uses 2 API calls.
              gh api \
                --header "Accept: application/vnd.github+json" \
                --header "X-GitHub-Api-Version: 2022-11-28" \
                "/repos/$GITHUB_REPOSITORY/pulls/$PR"
            )

            sleep "$sleep_time"

            sleep_time=$(( sleep_time * 2 ))
            attempt=$(( attempt + 1 ))
          done

  comment:
    permissions:
      issues: write # for Homebrew/actions/post-comment
      pull-requests: write # for Homebrew/actions/post-comment
    needs: [bottle, upload]
    if: failure() && inputs.issue > 0
    runs-on: ubuntu-latest
    steps:
      - name: Post comment on failure
        uses: Homebrew/actions/post-comment@master
        with:
          token: ${{secrets.GITHUB_TOKEN}}
          issue: ${{inputs.issue}}
          body: ":x: @${{github.actor}} bottle request for ${{inputs.formula}} [failed](${{env.RUN_URL}})."
          bot_body: ":x: Bottle request for ${{inputs.formula}} [failed](${{env.RUN_URL}})."
          bot: BrewTestBot