name: Create OCI image(s)

on:
  workflow_dispatch:
  push:
    branches:
      - main

env:
  registry: git.amarth.cloud
  owner: amarth
  image: default
  tag: latest

jobs:
  build:
    name: Build and push images
    runs-on: default
    steps:
      - name: Install dependencies
        run: |
          nix-env -iA nixpkgs.nodejs nixpkgs.podman nixpkgs.kvmtool

      # cheatsheet: https://nexveridian.com/blog/forgejo-pushing-container-images/
      - name: Prepare environment
        run: |
          # configure container policy to accept insecure registry
          mkdir -p ~/.config/containers
          echo '{ "default": [ {"type":"insecureAcceptAnything"} ] }' > ~/.config/containers/policy.json
  
          # configure authentication
          cat > ~/.config/containers/auth.json <<EOF
          {
            "auths": {
              "${{ env.registry }}": {
                "auth": "$(echo -n "${{ forge.actor }}:${{ env.PACKAGE_TOKEN }}" | base64 -w 0)"
              }
            }
          }
          EOF

      - name: Checkout repo
        uses: actions/checkout@v4

      - name: Create image
        run: |
          nix-build src/${{ env.image }}.nix
          podman load < result

      - name: Push image
        run: |
          podman push --authfile=~/.config/containers/auth.json localhost/${{ env.image }}:${{ env.tag }} ${{ env.registry }}/${{ forge.repo }}/${{ env.image }}:${{ env.tag }}