name: Check for new release
on:
  schedule:
    - cron: '17 * * * *'
  workflow_dispatch:

jobs:
  update:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Bump PKGBUILD if a new version is out
        env:
          GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
        run: |
          set -euo pipefail
          sudo apt-get update -qq
          sudo apt-get install -y -qq jq curl python3
          for cmd in jq curl python3; do
            command -v "$cmd" >/dev/null || { echo "error: missing $cmd" >&2; exit 1; }
          done
          before=$(sed -n 's/^pkgver=//p' PKGBUILD | head -1)
          ./scripts/update.sh
          after=$(sed -n 's/^pkgver=//p' PKGBUILD | head -1)
          if [[ -z "$after" ]]; then
            echo "error: could not read pkgver after update.sh" >&2
            exit 1
          fi
          if [[ "$before" == "$after" ]]; then
            echo "No bump (still $after)"
            exit 0
          fi
          if [[ -z "${GITEA_TOKEN:-}" ]]; then
            echo "error: GITEA_TOKEN is empty; cannot open or reuse bump PR" >&2
            exit 1
          fi
          if [[ -z "${GITHUB_REPOSITORY:-}" ]]; then
            echo "error: GITHUB_REPOSITORY is empty; cannot open or reuse bump PR" >&2
            exit 1
          fi
          git config user.name 'eva'
          git config user.email 's1d3sw1ped+eva@gmail.com'
          git add PKGBUILD .SRCINFO
          git commit -m "pkgbuild: Bump grok-bot-bin to ${after}"
          # Do not tag here and do not push protected master. Open a bump PR;
          # tag-release.yml creates v$pkgver after merge so build.yml can run.
          branch="chore/bump-${after}"
          git fetch origin "refs/heads/${branch}:refs/remotes/origin/${branch}" || \
            echo "note: ${branch} not on origin yet (creating)"
          if ! git push --force-with-lease origin "HEAD:refs/heads/${branch}"; then
            echo "error: could not push ${branch} (pkgver ${after})." >&2
            echo "error: Manual path: commit PKGBUILD+.SRCINFO, open a PR to master, merge, then let tag-release.yml create v${after} (or push that tag yourself)." >&2
            exit 1
          fi
          api="${GITHUB_API_URL:-https://git.s1d3sw1ped.com/api/v1}"
          repo="${GITHUB_REPOSITORY}"
          title="pkgbuild: Bump grok-bot-bin to ${after}"
          body=$(printf '%s\n' \
            "Automated PKGBUILD bump from Cursor's linux-x64 feed (${before} → ${after})." \
            "" \
            "This job does not create a git tag. After this PR merges to master, tag-release.yml should create \`v${after}\` so build.yml can attach the \`.pkg.tar.zst\`.")
          find_pr() {
            local prs
            if ! prs=$(curl -fsS -H "Authorization: token ${GITEA_TOKEN}" \
              "${api}/repos/${repo}/pulls?state=open&limit=50"); then
              echo "error: could not list open pull requests for ${repo}" >&2
              return 1
            fi
            if ! jq -e 'type == "array"' >/dev/null <<<"$prs"; then
              echo "error: unexpected pulls list response for ${repo}" >&2
              printf '%s\n' "$prs" >&2
              return 1
            fi
            jq -r --arg h "$branch" \
              '[.[] | select(.base.ref == "master" and (.head.ref == $h or ((.head.label // "") | endswith(":" + $h)))) | (.html_url // .url)] | .[0] // empty' \
              <<<"$prs"
          }
          existing=$(find_pr) || {
            echo "error: could not look up existing PR for ${branch} → master" >&2
            exit 1
          }
          if [[ -n "$existing" ]]; then
            echo "Reusing existing PR: ${existing}"
            exit 0
          fi
          payload=$(jq -n \
            --arg title "$title" \
            --arg body "$body" \
            --arg head "$branch" \
            --arg base "master" \
            '{title:$title, body:$body, head:$head, base:$base}')
          tmp=$(mktemp)
          trap 'rm -f "$tmp"' EXIT
          set +e
          code=$(curl -sS -o "$tmp" -w '%{http_code}' -X POST \
            -H "Authorization: token ${GITEA_TOKEN}" \
            -H "Content-Type: application/json" \
            -d "$payload" \
            "${api}/repos/${repo}/pulls")
          curl_ec=$?
          set -e
          if [[ $curl_ec -ne 0 ]]; then
            echo "error: curl failed creating PR ${branch} → master (exit ${curl_ec})" >&2
            exit 1
          fi
          if [[ "$code" == "201" ]]; then
            pr_url=$(jq -r '.html_url // .url // empty' "$tmp")
            echo "Opened PR: ${pr_url:-created (${branch} → master)}"
            exit 0
          fi
          if [[ "$code" == "409" || "$code" == "422" ]]; then
            existing=$(find_pr) || {
              echo "error: PR create returned HTTP ${code} but looking up existing PR failed" >&2
              cat "$tmp" >&2 || true
              exit 1
            }
            if [[ -n "$existing" ]]; then
              echo "Reusing existing PR: ${existing}"
              exit 0
            fi
          fi
          echo "error: could not open or reuse PR ${branch} → master (HTTP ${code})" >&2
          cat "$tmp" >&2 || true
          exit 1