name: Publish Package Repositories

on:
  workflow_dispatch:
    inputs:
      run_id:
        description: "Release run ID to publish (leave empty for latest successful stable)"
        required: false
        default: ""

permissions:
  contents: read
  actions: read

jobs:
  publish:
    runs-on: ubuntu-latest
    timeout-minutes: 25
    steps:
      - name: Checkout (shallow)
        uses: actions/checkout@v4
        with:
          fetch-depth: 1
          submodules: false # Publishing does not require submodule contents

      - name: Validate and resolve artifact source run
        id: resolve-run
        shell: bash
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
        run: |
          set -euo pipefail
          if [ -n "${{ inputs.run_id }}" ]; then
            RUN_ID="${{ inputs.run_id }}"
            echo "Validating provided run_id: $RUN_ID"
            RUN_INFO=$(gh api "repos/${{ github.repository }}/actions/runs/${RUN_ID}" \
              --jq '{conclusion: .conclusion, head_branch: .head_branch, event: .event}')
            CONCLUSION=$(echo "$RUN_INFO" | jq -r '.conclusion')
            BRANCH=$(echo "$RUN_INFO" | jq -r '.head_branch')
            EVENT=$(echo "$RUN_INFO" | jq -r '.event')
            if [[ "$CONCLUSION" != "success" ]]; then
              echo "::error::Run $RUN_ID did not succeed (conclusion=$CONCLUSION)"
              exit 1
            fi
            if [[ "$BRANCH" != "main" ]]; then
              echo "::warning::Run $RUN_ID is from branch '$BRANCH', not main"
            fi
            if [[ "$EVENT" == "pull_request" ]]; then
              echo "::error::Run $RUN_ID is a pull_request run; refusing artifact from untrusted source"
              exit 1
            fi
            echo "run_id=$RUN_ID" >> "$GITHUB_OUTPUT"
          else
            # Find latest successful release.yml run on main (stable tag push)
            RUN_ID=$(gh api "repos/${{ github.repository }}/actions/workflows/release.yml/runs?per_page=20&branch=main" \
              --jq '.workflow_runs[] | select(.conclusion=="success" and (.event=="push" or .event=="workflow_dispatch")) | .id' | head -1)
            if [ -z "$RUN_ID" ]; then
              echo "::error::No successful Release workflow run found on main"
              exit 1
            fi
            echo "run_id=$RUN_ID" >> "$GITHUB_OUTPUT"
            echo "Resolved latest successful Release run on main: $RUN_ID"
          fi

      - name: Download repo artifacts (apt-repo)
        uses: actions/download-artifact@v4
        with:
          run-id: ${{ steps.resolve-run.outputs.run_id }}
          name: apt-repo
          path: repo-artifacts/apt-repo
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Download repo artifacts (yum-repo)
        uses: actions/download-artifact@v4
        with:
          run-id: ${{ steps.resolve-run.outputs.run_id }}
          name: yum-repo
          path: repo-artifacts/yum-repo
          github-token: ${{ secrets.GITHUB_TOKEN }}

      - name: Prepare upload set
        id: prep
        shell: bash
        run: |
          set -euo pipefail
          ls -1 repo-artifacts || true
          # Expect artifacts named: apt-repo, yum-repo, homebrew-formula, etc.
          if [ -d repo-artifacts/apt-repo ]; then
            mv repo-artifacts/apt-repo aptrepo
          fi
          if [ -d repo-artifacts/yum-repo ]; then
            mv repo-artifacts/yum-repo yumrepo
          fi
          # latest.json is inside assets attached to release; we attempt fetch from GitHub release API.
          TAG=$(gh release list --limit 1 --json tagName --jq '.[0].tagName') || TAG=""
          if [ -z "$TAG" ]; then
            echo "Could not determine latest tag; skipping manifest fetch" >&2
          else
            echo "Latest tag: $TAG" >&2
            gh release download "$TAG" --pattern latest.json --dir . || echo "No latest.json asset yet"
          fi
          # Summaries
          echo "HAS_APT=$([ -d aptrepo ] && echo 1 || echo 0)" >> "$GITHUB_OUTPUT"
          echo "HAS_YUM=$([ -d yumrepo ] && echo 1 || echo 0)" >> "$GITHUB_OUTPUT"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

      - name: Publish to R2
        if: ${{ steps.prep.outputs.HAS_APT == '1' || steps.prep.outputs.HAS_YUM == '1' }}
        env:
          CLOUDFLARE_API_TOKEN: ${{ secrets.CLOUDFLARE_API_TOKEN || secrets.R2_SECRET_ACCESS_KEY }}
          CLOUDFLARE_ACCOUNT_ID: ${{ secrets.CLOUDFLARE_ACCOUNT_ID }}
          GPG_PUBLIC_KEY_B64: ${{ secrets.GPG_PUBLIC_KEY_B64 || '' }}
        shell: bash
        run: |
          set -euo pipefail
          if [ -z "${CLOUDFLARE_API_TOKEN:-}" ] || [ -z "${CLOUDFLARE_ACCOUNT_ID:-}" ]; then
            echo "Cloudflare API token/account missing; aborting publish." >&2
            exit 1
          fi
          WRANGLER_ROOT="${RUNNER_TEMP:-/tmp}/wrangler-cli"
          WRANGLER_BIN="$WRANGLER_ROOT/node_modules/.bin/wrangler"
          if [ ! -x "$WRANGLER_BIN" ]; then
            npm install --prefix "$WRANGLER_ROOT" wrangler@4.69.0 >/dev/null
          fi
          "$WRANGLER_BIN" --version >&2
          upload_file() {
            local src="$1"; shift
            local key="$1"; shift
            local ct="application/octet-stream"
            case "$key" in
              *.json) ct="application/json" ;;
              *.key) ct="text/plain" ;;
              *.txt) ct="text/plain" ;;
              *.xml) ct="application/xml" ;;
              *.gz) ct="application/gzip" ;;
              *.deb) ct="application/vnd.debian.binary-package" ;;
              *.rpm) ct="application/x-rpm" ;;
              *.asc) ct="application/pgp-signature" ;;
            esac
            echo "-- Upload $key" >&2
            "$WRANGLER_BIN" r2 object put "yams-repository/$key" \
              --remote \
              --file "$src" \
              --content-type "$ct"
          }
          if [ -n "${GPG_PUBLIC_KEY_B64:-}" ]; then
            echo "$GPG_PUBLIC_KEY_B64" | base64 -d > gpg.key
            upload_file gpg.key gpg.key
          fi
          if [ -d aptrepo ]; then
            find aptrepo -type f -print0 | while IFS= read -r -d '' f; do
              rel="${f#aptrepo/}"; upload_file "$f" "aptrepo/$rel";
            done
          fi
          if [ -d yumrepo ]; then
            find yumrepo -type f -print0 | while IFS= read -r -d '' f; do
              rel="${f#yumrepo/}"; upload_file "$f" "yumrepo/$rel";
            done
          fi
          if [ -f latest.json ]; then
            upload_file latest.json latest.json
          fi
          echo "Publish complete." >&2

      - name: Warn if nothing to publish
        if: ${{ steps.prep.outputs.HAS_APT != '1' && steps.prep.outputs.HAS_YUM != '1' }}
        run: echo "No repo artifacts found to publish." >&2