name: Build Container and update Flux
on:
  push:
    paths-ignore:
    - k/**

env:
  DEPLOY_MANIFEST: ${{ vars.DEPLOY_MANIFEST }}
  FLUX_MANIFEST: ${{ vars.FLUX_MANIFEST || 'flux.yaml' }}

jobs:
  Explore-Gitea-Actions:
    runs-on: metal-docker
    steps:
      - name: Check out repository code
        uses: actions/checkout@v3
      - run: |
          echo "deploy: ${DEPLOY_MANIFEST}"
          echo "flux:   ${FLUX_MANIFEST}"
          ls -la
          docker build --progress plain --iidfile iid.txt .
          stringprefix() { [ ${#1} -le $2 ] && echo $1 && return 0 || stringprefix "${1%?}" $2 ; }
          STAG="$GITHUB_REF_NAME-$(date +%Y-%m-%d-%H.%M.%S)"
          SHORTSHA="$(stringprefix "$GITHUB_SHA" 8)"
          for TAG in "$SHORTSHA" "$GITHUB_REF_NAME" "$STAG";do
            docker tag "`cat iid.txt`" "$DOCKER_REGISTRY/$GITHUB_REPOSITORY:$TAG"
            docker push "$DOCKER_REGISTRY/$GITHUB_REPOSITORY:$TAG"
          done

          BRANCH="$GITHUB_REF_NAME"
          KBRANCH="k-$GITHUB_REF_NAME"

          git config user.name "$GITHUB_REPOSITORY (act)"
          git config user.email "gitea-actions@strudelline.net"

          # ensure the branch exists so we can ensure it's deleted.  no errors at all.
          git checkout -B "$KBRANCH"
          git checkout "$BRANCH"
          git branch -D "$KBRANCH"
          git checkout -b "$KBRANCH"

          # now fix up the images in k/runner.yaml
          sed -i -e "s@image: $DOCKER_REGISTRY/$GITHUB_REPOSITORY:.*@image: $DOCKER_REGISTRY/$GITHUB_REPOSITORY:$STAG@" k/runner.yaml
          sed -i -e "s@branch: .*@$KBRANCH@" k/flux.yaml

          git add k
          git commit -m "upgrade runner sts to $STAG"
          git push -f origin k-$GITHUB_REF_NAME

          # now let's fix the origin branch's flux.yaml if it's needed.
          # this will only happen once so it's not such an awful UX.
          git checkout "$BRANCH"
          sed -i -e "s@branch: .*@$KBRANCH@" k/flux.yaml

          if git diff | grep -q .;then
            echo fixing branch in flux.yaml of the origin branch
            git add k/flux.yaml
            git commit -m "fix flux.yaml in $BRANCH"
            git push
          fi