build-dist-folder.yaml

## git: https://github.com/pffy/code-gs
## lic: https://unlicense.org/

## task: concat src/*.gs files into dist/code.gs
## task: move src/*.html to dist folder (optional)
## task: move src/appsscript.json to dist folder (optional)

name: build dist folder
on:
  push:
    paths:
      - 'src/*.gs'
      - 'src/*.html'
      - 'src/appsscript.json'      
    branches:
      - 'main'

jobs:
  build_dist:
    runs-on: ubuntu-latest
    steps:
      - name: checkout
        uses: actions/checkout@v3
      - name: concat gs files to code-gs
        run: |
          ls
          pwd
          
          ## get concat helper text files
          git clone https://github.com/pffy/nip
          
          ## get the file location for horizontal rule
          HR=$PWD/nip/js/hr80.js
          echo $HR
          
          ## from the repo root, list gs files in 'src' with commas
          FF=$(ls -1 src/*.gs | tr "\n" ",")
          echo $FF          

          ## based on solution found here:
          ## https://stackoverflow.com/a/27658733
          ## removes last comma
          FF=${FF::-1}
          echo $FF

          ## based on this solutions:
          ## https://stackoverflow.com/a/13210909
          ## replace the commas with file name of HR80
          FF=${FF//,/ $HR }
          echo $FF
          
          OUTFILE=code.gs
          
          ## build a new outfile
          rm -f $OUTFILE
          echo "/* $OUTFILE generated by concat-gs-files workflow: gh/pffy/code-gs */" >> $OUTFILE
          echo "" >> $OUTFILE
          cat $FF >> $OUTFILE
          pwd

          ## finish, move outfile and support files to `dist` folder
          
          rm -rf dist
          mkdir -p dist
          
          mv code.gs ./dist
          
          ## based on solution found here:
          ## https://stackoverflow.com/a/17902999
          
          ## HTML files are optional
          HTML=./src/*.html
          [[ $(ls $HTML) ]] && cp $HTML ./dist || echo "no-html-files"

          ## JSON files are optional
          JSON=./src/appsscript.json
          [[ $(ls $JSON) ]] && cp $JSON ./dist || echo "no-json-file"

          ## cleanup
          rm -rf nip
          
      - name: show a tree
        run: | 
          tree .          
      - name: setup git config
        run: |
          git config user.name "GitHub Actions Bot"
          git config user.email "<>"
      - name: commit
        run: |
          git add .
          git commit -m "generated by build-dist-folder workflow"
          git push origin main