name: Release

on:
  push:
     branches:
       - main

jobs:
  checks:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install Nix
        uses: cachix/install-nix-action@v31
        with:
          nix_path: nixpkgs=channel:nixos-unstable
      - name: Run Checks
        run: nix develop --no-pure-eval --command just check-all

  release:
    needs: checks
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
        with:
          fetch-depth: 0
          token: ${{ secrets.CI_TOKEN }}

      - name: Install Nix
        uses: cachix/install-nix-action@v31
        with:
          nix_path: nixpkgs=channel:nixos-unstable

      - name: Check for releasable commits
        id: releasable
        run: |
          COUNT=$(nix develop --no-pure-eval --command just cliff-count)
          echo "count=$COUNT" >> $GITHUB_OUTPUT

      - name: Determine next version
        if: steps.releasable.outputs.count > 0
        id: next_version
        run: |
          CLIFF_NEXT_VERSION=$(nix develop --no-pure-eval --command just cliff-next-version)
          echo "version=$CLIFF_NEXT_VERSION" >> $GITHUB_OUTPUT

      - name: Update changelog
        if: steps.releasable.outputs.count > 0
        run: nix develop --no-pure-eval --command just cliff-bump

      - name: Create release commit
        if: steps.releasable.outputs.count > 0
        run: |
          VERSION=${{ steps.next_version.outputs.version }}
          nix develop --no-pure-eval --command just commit-release "$VERSION"

      - name: Create version tag
        if: steps.releasable.outputs.count > 0
        run: |
          VERSION=${{ steps.next_version.outputs.version }}
          nix develop --no-pure-eval --command just create-release-tag "$VERSION"

      - name: Build Linux release binaries
        if: steps.releasable.outputs.count > 0
        run: nix build

      - name: Build Windows release binaries
        if: steps.releasable.outputs.count > 0
        run: nix build .#windows

      - name: Publish on crates.io
        if: steps.releasable.outputs.count > 0
        run: nix develop --no-pure-eval --accept-flake-config --command cargo publish
        env:
          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}

      - name: Rebase develop onto main
        if: steps.releasable.outputs.count > 0
        run: nix develop --no-pure-eval --command just rebase-develop

      - name: Bump to next dev version
        if: steps.releasable.outputs.count > 0
        run: |
          VERSION=${{ steps.next_version.outputs.version }}
          nix develop --no-pure-eval --command just update-develop-version "$VERSION"