name: Rust

on:
  push:
    paths:
      - 'Cargo.toml'
      - 'Cargo.lock'
      - 'src/**'
      - '.github/**/*.yml'
  pull_request:
    branches: [ main ]
    types: [ opened, synchronize, reopened ]

env:
  CARGO_TERM_COLOR: always
  DEBUG_OUTPUT: "true"
  APP_NAME: asterctl
  BIN_OUTPUT_PATH: binaries
  HASH_FILENAME: asterctl.hash
  LINUX_ARTIFACT_SUFFIX: Linux-x64

permissions:
  contents: write
  checks: write

jobs:
  lint:
    name: Clippy, Rustfmt, Tests
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@stable
        with:
          components: clippy,rustfmt

      - name: Cache dependencies
        id: cache-dependencies
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Install build deps
        run: sudo apt install pkg-config libudev-dev

      - uses: auguwu/clippy-action@1.4.0
        with:
          token: ${{secrets.GITHUB_TOKEN}}

      - name: Run rustfmt
        run: cargo fmt --all -- --check

      - name: Unit tests
        run: cargo test

  build:
    name: Linux-x64 build
    needs: lint
    # using an older Ubuntu release on purpose to link against an older libc version for greater compatibility
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          # History of 200 should be more than enough to calculate commit count since last release tag.
          fetch-depth: 200
      - name: Fetch all tags to determine version
        run: |
          git fetch origin +refs/tags/*:refs/tags/*
          APP_VERSION=$(git describe --match "v[0-9]*" --tags HEAD --always)
          echo "APP_VERSION=$APP_VERSION" >> $GITHUB_ENV
          echo "ARTIFACT_NAME=${{ env.APP_NAME }}-$APP_VERSION-${{ env.LINUX_ARTIFACT_SUFFIX }}" >> $GITHUB_ENV

      - name: Install build deps
        run: sudo apt install pkg-config libudev-dev

      - name: Cache dependencies
        id: cache-dependencies
        uses: actions/cache@v4
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache target
        id: cache-target
        uses: actions/cache@v4
        with:
          path: |
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}-${{ inputs.target }}-${{ inputs.build }}

      - name: Release build
        shell: bash
        run: cargo build --release --bins --all-features

      # Archive is required to preserve file permissions and re-used for release uploads
      - name: Create upload artifact
        shell: bash
        run: |
          ls -la target/release
          mkdir -p ${GITHUB_WORKSPACE}/${{env.BIN_OUTPUT_PATH }}
          cp target/release/${{ env.APP_NAME }} ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }}
          cp target/release/sysinfo ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }}
          cp linux/*.service ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }}
          cp -r cfg ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }}
          echo "VERSION=${{ env.APP_VERSION }}" > ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }}/version.txt
          echo "TIMESTAMP=$(date +"%Y%m%d_%H%M%S")" >> ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }}/version.txt
          tar czvf ${{ env.ARTIFACT_NAME }}.tar.gz -C ${GITHUB_WORKSPACE}/${{ env.BIN_OUTPUT_PATH }} .

      - uses: actions/upload-artifact@v4
        id: upload_artifact
        with:
          name: ${{ env.ARTIFACT_NAME }}
          path: ${{ env.ARTIFACT_NAME }}.tar.gz
          if-no-files-found: error
          retention-days: 3

  release:
    name: GitHub release
    if: github.ref == 'refs/heads/main' || contains(github.ref, 'tags/v')
    needs: [ build ]
    runs-on: ubuntu-24.04

    steps:
      - name: Download build artifacts
        uses: actions/download-artifact@v4

      - name: Log
        if: env.DEBUG_OUTPUT == 'true'
        shell: bash
        run: |
          echo "--- Structure of downloaded artifacts ---"
          ls -R
          echo "--- Environment ---"
          printenv

      # Use a common timestamp for all matrix build artifacts
      - name: Set build timestamp
        run: |
          echo "TIMESTAMP=$(date +"%Y%m%d_%H%M%S")" >> $GITHUB_ENV

      - name: Extract archives from downloaded artifacts
        run: |
          # Files are wrapped in tar from actions/upload-artifact, then extracted into a directory by actions/download-artifact
          ls -lah
          for D in * 
            do if [ -d "${D}" ]; then
              echo "Archive directory: $D"
              ls -lah $D/*
              mv $D/* ./
            fi
          done;
          ls -lah

      # Add timestamp to development builds
      - name: Create GitHub development build archives
        if: "!contains(github.ref, 'tags/v')"
        run: |
          echo "append timestamp for development builds"
          for filename in *.tar.gz; do mv $filename "$(basename $filename .tar.gz)-${{ env.TIMESTAMP }}.tar.gz"; done;
          echo "create hashes"
          for filename in *.tar.gz; do echo "sha256  `sha256sum $filename`" >> ${{ env.HASH_FILENAME }}; done;
          ls -lah

      # Checkout is required for the next `gh release delete` step
      - name: Checkout
        uses: actions/checkout@v4
        with:
          path: main

      # We have to delete the "latest" release, otherwise `softprops/action-gh-release` will only append the new artifact.
      # This simulates the old marvinpinto/action-automatic-releases action.
      - name: Remove previous pre-release
        run: |
          cd main
          gh release delete latest --cleanup-tag -y || true
        env:
          GH_TOKEN: ${{ github.token }}

      - name: Create Pre-Release
        uses: softprops/action-gh-release@v2
        if: "!contains(github.ref, 'tags/v')"
        with:
          prerelease: true
          tag_name: latest
          generate_release_notes: true
          name: "Development Build"
          files: |
            *.tar.gz
            ${{ env.HASH_FILENAME }}

      - name: Create GitHub release archives
        if: "contains(github.ref, 'tags/v')"
        run: |
          echo "create hashes"
          for filename in *.tar.gz; do echo "sha256  `sha256sum $filename`" >> ${{ env.HASH_FILENAME }}; done;
          ls -lah

      - name: Create Release
        uses: softprops/action-gh-release@v2
        if: "contains(github.ref, 'tags/v')"
        with:
          prerelease: false
          generate_release_notes: true
          files: |
            *.tar.gz
            ${{ env.HASH_FILENAME }}