name: Verify Homebrew Cask

# The aionui cask is on Homebrew's autobump list — BrewTestBot automatically
# creates version-bump PRs every ~3 hours. This workflow only *verifies* that
# the cask has been updated, it no longer submits bump PRs itself.

on:
  # Daily check at 08:00 UTC
  schedule:
    - cron: '0 8 * * *'
  workflow_dispatch:
    inputs:
      version:
        description: 'Version to verify (e.g., 1.8.20). Leave empty to use latest release.'
        required: false
        type: string

permissions:
  contents: read

jobs:
  verify-cask:
    name: Verify Homebrew Cask
    runs-on: ubuntu-latest

    steps:
      - name: Get expected version
        id: release
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          if [ -n "${{ inputs.version }}" ]; then
            VERSION="${{ inputs.version }}"
            VERSION="${VERSION#v}"
          else
            # Fetch latest non-prerelease release tag
            TAG=$(gh release view --repo "${{ github.repository }}" --json tagName --jq '.tagName' 2>/dev/null || echo "")
            if [ -z "$TAG" ]; then
              echo "::error::Could not determine latest release tag"
              exit 1
            fi
            VERSION="${TAG#v}"
          fi

          echo "version=$VERSION" >> $GITHUB_OUTPUT
          echo "Expected Homebrew cask version: $VERSION"

      - name: Verify cask version
        id: verify
        run: |
          EXPECTED="${{ steps.release.outputs.version }}"

          # Fetch the cask file directly from the Homebrew repo
          CASK_CONTENT=$(curl -fsSL "https://raw.githubusercontent.com/Homebrew/homebrew-cask/HEAD/Casks/a/aionui.rb" 2>/dev/null || echo "")

          if [ -z "$CASK_CONTENT" ]; then
            echo "::error::Failed to fetch cask file from Homebrew repo"
            echo "status=fetch_failed" >> $GITHUB_OUTPUT
            exit 1
          fi

          # Extract version from cask file
          CASK_VERSION=$(echo "$CASK_CONTENT" | grep -oP 'version\s+"\K[^"]+' | head -1)
          echo "  Expected: $EXPECTED"
          echo "  Homebrew: $CASK_VERSION"
          echo "cask_version=$CASK_VERSION" >> $GITHUB_OUTPUT

          if [ "$CASK_VERSION" = "$EXPECTED" ]; then
            echo "status=match" >> $GITHUB_OUTPUT
          else
            echo "status=mismatch" >> $GITHUB_OUTPUT
          fi

      - name: Check for pending PR
        if: steps.verify.outputs.status == 'mismatch'
        id: check_pr
        env:
          GH_TOKEN: ${{ github.token }}
        run: |
          EXPECTED="${{ steps.release.outputs.version }}"

          # Search for open PRs updating aionui in homebrew-cask
          PR_LIST=$(gh pr list --repo Homebrew/homebrew-cask \
            --search "aionui $EXPECTED in:title" --state open \
            --json number,title,url --limit 5 2>/dev/null || echo "[]")
          PR_COUNT=$(echo "$PR_LIST" | jq length)

          if [ "$PR_COUNT" -gt 0 ]; then
            echo "Found pending PR(s):"
            echo "$PR_LIST" | jq -r '.[] | "  #\(.number) \(.title) — \(.url)"'
            echo "status=pr_pending" >> $GITHUB_OUTPUT
          else
            echo "status=no_pr" >> $GITHUB_OUTPUT
          fi

      - name: Report result
        if: always() && steps.release.outputs.version != ''
        run: |
          EXPECTED="${{ steps.release.outputs.version }}"
          STATUS="${{ steps.verify.outputs.status }}"
          CASK_VERSION="${{ steps.verify.outputs.cask_version }}"
          PR_STATUS="${{ steps.check_pr.outputs.status }}"

          echo ""
          echo "======================================="
          echo "  Homebrew Cask Verification Report"
          echo "======================================="
          echo ""

          if [ "$STATUS" = "match" ]; then
            echo "Homebrew cask is up to date!"
            echo "  Version: $CASK_VERSION"
            echo "  Install: brew install --cask aionui"
          elif [ "$STATUS" = "mismatch" ] && [ "$PR_STATUS" = "pr_pending" ]; then
            echo "Homebrew bump PR is pending review."
            echo "  Current cask: $CASK_VERSION"
            echo "  Expected:     $EXPECTED"
            echo "  BrewTestBot has created a PR, awaiting Homebrew maintainer merge."
          elif [ "$STATUS" = "mismatch" ]; then
            echo "::warning::Homebrew cask has NOT been updated to $EXPECTED (current: $CASK_VERSION)"
            echo "  Current cask: $CASK_VERSION"
            echo "  Expected:     $EXPECTED"
            echo ""
            echo "  If this persists, manually create a PR:"
            echo "  1. Fork https://github.com/Homebrew/homebrew-cask"
            echo "  2. Update Casks/a/aionui.rb with new version and SHA256"
            echo "  3. Submit PR to Homebrew/homebrew-cask"
            exit 1
          else
            echo "::error::Failed to verify — could not fetch cask file from Homebrew repo"
            exit 1
          fi