exec.yml

name: Mirror upstream release

permissions:
  contents: write

on:
  workflow_dispatch:
  schedule:
    - cron: "17 * * * *"

jobs:
  mirror:
    runs-on: ubuntu-latest
    env:
      UPSTREAM_REPO: LIghtJUNction/MagicNet
      GH_TOKEN: ${{ github.token }}
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Download latest upstream release
        shell: bash
        run: |
          set -euo pipefail

          gh api "repos/${UPSTREAM_REPO}/releases/latest" > release.json
          jq -r '.tag_name' release.json > tag.txt
          jq -r '.name // .tag_name' release.json > title.txt
          jq -r '.body // ""' release.json > release-notes.md

          mkdir -p upstream-release
          jq -r '.assets[] | @base64' release.json | while read -r asset; do
            name="$(printf '%s' "${asset}" | base64 -d | jq -r '.name')"
            url="$(printf '%s' "${asset}" | base64 -d | jq -r '.url')"
            gh api \
              -H "Accept: application/octet-stream" \
              "${url}" > "upstream-release/${name}"
          done

      - name: Publish unchanged release
        shell: bash
        run: |
          set -euo pipefail

          tag="$(cat tag.txt)"
          title="$(cat title.txt)"

          if gh release view "${tag}" >/dev/null 2>&1; then
            echo "Release ${tag} already exists; skipping publish."
          else
            shopt -s nullglob
            assets=(upstream-release/*)

            if [ "${#assets[@]}" -eq 0 ]; then
              gh release create "${tag}" \
                --title "${title}" \
                --notes-file release-notes.md \
                --latest
            else
              gh release create "${tag}" "${assets[@]}" \
                --title "${title}" \
                --notes-file release-notes.md \
                --latest
            fi
          fi