name: Flake Update / Build

on:
  workflow_dispatch:
  schedule:
    - cron: 0 0 * * *

permissions:
  contents: write

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  build-minimal:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v4

      - uses: daylin-bot/actions/setup@main
      - uses: ./.github/actions/clean-disk

      - run: git checkout -B flake-lock

      - uses: DeterminateSystems/nix-installer-action@v13
        with:
          source-url: https://install.lix.systems/lix/lix-installer-x86_64-linux
          extra-conf: |
            experimental-features = pipe-operator
            accept-flake-config = true

      - uses: cachix/cachix-action@v15
        with:
          name: daylin
          authToken: "${{ secrets.CACHIX_AUTH_TOKEN }}"

      - name: Update nix flake
        run: |
          printf '# Flake Lock\n\n```txt\n' >> $GITHUB_STEP_SUMMARY
          nix flake update --commit-lock-file
          git show -s --format='%B' >> $GITHUB_STEP_SUMMARY
          printf '```\n' >> $GITHUB_STEP_SUMMARY

      - name: Pre-build oizys
        run: nix build .

      - run: >
          nix build --dry-run $(nix run . -- output --host othalan --flake . )

      - name: Build
        run: >
          nix run .
          --
          build --minimal
          --host "othalan"
          --flake .
          --debug
          --
          --print-build-logs
          --keep-going

      - name: Commit Updates
        uses: daylin-bot/actions/commit-and-push@main
        with:
          push-args: --set-upstream --force origin flake-lock

  build-full:
    needs: build-minimal
    runs-on: ubuntu-latest
    strategy:
      matrix:
        host:
          - othalan
          - algiz
          - mannaz
          - naudiz
    steps:
      - name: Checkout
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - uses: DeterminateSystems/nix-installer-action@v13
        with:
          source-url: https://install.lix.systems/lix/lix-installer-x86_64-linux
          extra-conf: |
            experimental-features = pipe-operator
            accept-flake-config = true

      - uses: ./.github/actions/clean-disk
        with:
          purge-packages: 'true'

      - name: Pre-build oizys
        run: nix build .


      - name: Build
        run: |
          system_attr=$(nix run . -- output --host "${{ matrix.host }}" --flake .)
          nix run . \
            -- \
            build $system_attr \
              --flake . \
              --debug \
              -- \
              --print-build-logs \
              --out-link current

      - run: git checkout flake-lock

      - name: Pre-build oizys
        run: nix build .

      - name: Build Updated
        run: |
          system_attr=$(nix run . -- output --host "${{ matrix.host }}" --flake .)
          nix run . \
            -- \
            build $system_attr \
              --flake . \
              --debug \
              -- \
              --keep-going \
              --print-build-logs \
              --out-link updated

      - run: |
          echo "# System Diff" >> $GITHUB_STEP_SUMMARY
          nix run "nixpkgs#nvd" -- --color always diff ./current ./updated >> summary.md
          printf '```\n%s```\n' "$(nix run "nixpkgs#nvd" -- diff ./current ./updated)" >> $GITHUB_STEP_SUMMARY
          nix run "nixpkgs#nvd" -- --color always diff ./current ./updated | nix run "nixpkgs#charm-freeze" -- --output diff.svg

      - run: df -h

      - uses: actions/upload-artifact@v4
        with:
          name: ${{ matrix.host }}-summary
          path: summary.md

      # https://github.com/actions/upload-artifact/issues/50#issuecomment-1856471599
      - uses: actions/upload-artifact@v4
        id: diff-upload
        with:
          name: ${{ matrix.host }}-diff
          path: diff.svg

      - name: Output artifact URL
        run: echo 'Artifact URL is ${{ steps.diff-upload.outputs.artifact-url }}'