publish-update-json.yaml

name: Publish Update Json
on:
  release:
    types:
      - published

jobs:
  PublishUpdateJson:
    name: PublishUpdateJson
    runs-on: ubuntu-latest
    steps:
      - name: Install Dependencies
        run: |
          sudo apt-get install -y jq wget unzip dos2unix
      - name: Generate Update Json
        run: |
          #!/bin/bash

          # from https://github.com/topjohnwu/Magisk/blob/70415a396a4e1eae85d74672c11f6b675a8edff1/scripts/util_functions.sh#L30-L36
          grep_prop() {
              local REGEX="s/^$1=//p"
              shift
              local FILES=$@
              [ -z "$FILES" ] && FILES='/system/build.prop'
              cat $FILES 2>/dev/null | dos2unix | sed -n "$REGEX" | head -n 1
          }

          abort() {
              echo "$1" >&2
              exit 1
          }

          PUBLIC_ROOT="./publish"
          TEMP_ROOT="./temp"

          mkdir -p "$PUBLIC_ROOT"
          mkdir -p "$TEMP_ROOT"

          echo "Generate changelog.md"
          
          cat << __EOF_OF_CHANGELOGS__ > "$PUBLIC_ROOT/changelog.md"
          ${{ github.event.release.body }}
          __EOF_OF_CHANGELOGS__

          echo "Fetching release assets"

          wget -O - '${{ github.event.release.assets_url }}' 2> /dev/null | jq -r ".[].browser_download_url" | while read -r url
          do
              echo "Processing $url"

              FILE_NAME="$TEMP_ROOT/module.zip"
              EXTRACT_DIR="$TEMP_ROOT/module"

              echo "Downloading $FILE_NAME"

              wget -O "$FILE_NAME" "$url" > /dev/null 2>&1 || abort "Download $url failed"

              echo "Extract module $FILE_NAME to $EXTRACT_DIR"

              unzip -o -d "$EXTRACT_DIR" "$FILE_NAME" module.prop > /dev/null 2>&1 || abort "Unzip $url failed"

              id="$(grep_prop id "$EXTRACT_DIR/module.prop")"
              version="$(grep_prop version "$EXTRACT_DIR/module.prop")"
              versionCode="$(grep_prop versionCode "$EXTRACT_DIR/module.prop")"
              zipUrl="$url"
              changelog="${{ github.event.repository.html_url }}/releases/download/${{ github.event.release.tag_name }}/changelog.md"
              jsonFileName="$(echo -n "$id" | sed "s/_/-/g")"

              echo "-------- Module properties --------"
              echo "id = $id"
              echo "version = $version"
              echo "versionCode = $versionCode"
              echo "zipUrl = $zipUrl"
              echo "changelog = $changelog"
              echo "jsonFileName = $jsonFileName"

              if [[ -z "$id" || -z "$version" || -z "$versionCode" || -z "$zipUrl" || -z "$changelog" ]]; then
                  abort "Invalid module.prop"
              fi

              printf '{"version":"%s","versionCode":%d,"zipUrl":"%s","changelog":"%s"}' "$version" "$versionCode" "$zipUrl" "$changelog" > "$PUBLIC_ROOT/$jsonFileName.json"
          done
      - name: Upload Json
        uses: shogo82148/actions-upload-release-asset@v1
        with:
          github_token: ${{ github.token }}
          upload_url: ${{ github.event.release.upload_url }}
          asset_path: ./publish/*