name: CI
on:
  push:
    branches:
      - master
  pull_request:

# This allows a subsequently queued workflow run to interrupt previous runs
concurrency:
  group: '${{ github.workflow }} @ ${{ github.event.pull_request.head.label || github.head_ref || github.ref }}'
  cancel-in-progress: true

jobs:
  build:
    runs-on: ${{ matrix.os }}
    env:
      CARGO_TERM_COLOR: always
      RUSTFLAGS: -C strip=symbols
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          - windows-latest
          - macos-latest
    steps:
      - name: Check out repository
        uses: actions/checkout@v3
        with:
          # For git describe
          fetch-depth: 0

      - name: Get version
        id: get_version
        shell: bash
        run: |
          echo -n 'version=' >> "${GITHUB_OUTPUT}"
          git describe --always \
              | sed -E "s/^v//g;s/([^-]*-g)/r\1/;s/-/./g" \
              >> "${GITHUB_OUTPUT}"

      - name: Get Rust LLVM target triple
        id: get_target
        shell: bash
        env:
          RUSTC_BOOTSTRAP: '1'
        run: |
          echo -n 'name=' >> "${GITHUB_OUTPUT}"
          rustc -Z unstable-options --print target-spec-json \
              | jq -r '."llvm-target"' \
              >> "${GITHUB_OUTPUT}"

      - name: Cache Rust dependencies
        uses: Swatinem/rust-cache@v2

      - name: Clippy
        run: cargo clippy --release --workspace --features static

      - name: Build
        run: cargo build --release --workspace --features static

      - name: Tests
        run: cargo test --release --workspace --features static

      - name: Archive documentation
        uses: actions/upload-artifact@v3
        with:
          name: avbroot-${{ steps.get_version.outputs.version }}-${{ steps.get_target.outputs.name }}
          path: |
            LICENSE
            README.md

      # This is separate so we can have a flat directory structure.
      - name: Archive executable
        uses: actions/upload-artifact@v3
        with:
          name: avbroot-${{ steps.get_version.outputs.version }}-${{ steps.get_target.outputs.name }}
          path: |
            target/release/avbroot
            target/release/avbroot.exe

      - name: Cache e2e executable
        uses: actions/cache@v3
        with:
          key: e2e-${{ github.sha }}-${{ runner.os }}
          path: |
            target/release/e2e
            target/release/e2e.exe

  setup:
    name: Prepare workflow data
    runs-on: ubuntu-latest
    needs: build
    timeout-minutes: 2
    outputs:
      config-path: ${{ steps.load-config.outputs.config-path }}
      device-list: ${{ steps.load-config.outputs.device-list }}
      magisk-key: ${{ steps.cache-keys.outputs.magisk-key }}
      img-key-prefix: ${{ steps.cache-keys.outputs.img-key-prefix }}
      img-hit: ${{ steps.get-img-cache.outputs.cache-matched-key }}
    steps:
      - uses: actions/checkout@v3

      - name: Restore e2e executable
        uses: actions/cache/restore@v3
        with:
          key: e2e-${{ github.sha }}-${{ runner.os }}
          fail-on-cache-miss: true
          path: |
            target/release/e2e
            target/release/e2e.exe

      - name: Loading test config
        id: load-config
        working-directory: e2e
        run: |
          echo 'config-path=e2e/e2e.toml' >> "${GITHUB_OUTPUT}"
          echo -n 'device-list=' >> "${GITHUB_OUTPUT}"
          ../target/release/e2e list \
            | jq -cnR '[inputs | select(length > 0)]' \
            >> "${GITHUB_OUTPUT}"

      - name: Generating cache keys
        id: cache-keys
        run: |
          {
            echo "img-key-prefix=img-${{ hashFiles(steps.load-config.outputs.config-path) }}-"; \
            echo "magisk-key=magisk-${{ hashFiles(steps.load-config.outputs.config-path) }}";
          } >> $GITHUB_OUTPUT

      - name: Checking for cached device images
        id: get-img-cache
        uses: actions/cache/restore@v3
        with:
          key: ${{ steps.cache-keys.outputs.img-key-prefix }}
          lookup-only: true
          path: |
            e2e/files/${{ fromJSON(steps.load-config.outputs.device-list)[0] }}-sparse.tar

      - name: Checking for cached magisk apk
        id: get-magisk-cache
        uses: actions/cache/restore@v3
        with:
          key: ${{ steps.cache-keys.outputs.magisk-key }}
          lookup-only: true
          path: e2e/files/magisk

      - name: Preloading Magisk cache
        if: ${{ ! steps.get-magisk-cache.outputs.cache-hit }}
        uses: ./.github/actions/preload-magisk-cache
        with:
          cache-key: ${{ steps.cache-keys.outputs.magisk-key }}

  preload-img:
    name: Preload device images
    runs-on: ubuntu-latest
    needs: setup
    timeout-minutes: 5
    # Assume that preloading always succesfully cached all images before.
    # If for some reason only some got cached, on the first run, the cache will not be preloaded
    # which will result in some being downloaded multiple times when running the tests.
    if: ${{ ! needs.setup.outputs.img-hit }}
    strategy:
      matrix:
        device: ${{ fromJSON(needs.setup.outputs.device-list) }}
    steps:
      - uses: actions/checkout@v3

      - name: Preloading image cache
        uses: ./.github/actions/preload-img-cache
        with:
          cache-key-prefix: ${{ needs.setup.outputs.img-key-prefix }}
          device: ${{ matrix.device }}

  tests:
    name: Run test for ${{ matrix.device }} on ${{ matrix.os }}
    runs-on: ubuntu-latest
    needs:
      - setup
      - preload-img
    timeout-minutes: 10
    # Continue on skipped but not on failures or cancels
    if: ${{ always() && ! failure() && ! cancelled() }}
    strategy:
      matrix:
        device: ${{ fromJSON(needs.setup.outputs.device-list) }}
        os:
          - ubuntu-latest
          - windows-latest
          - macos-latest
    steps:
      - uses: actions/checkout@v3

      - name: Restoring Magisk cache
        uses: ./.github/actions/preload-magisk-cache
        with:
          cache-key: ${{ needs.setup.outputs.magisk-key }}

      - name: Restoring image cache
        uses: ./.github/actions/preload-img-cache
        with:
          cache-key-prefix: ${{ needs.setup.outputs.img-key-prefix }}
          device: ${{ matrix.device }}

      - name: Restore e2e executable
        uses: actions/cache/restore@v3
        with:
          key: e2e-${{ github.sha }}-${{ runner.os }}
          fail-on-cache-miss: true
          path: |
            target/release/e2e
            target/release/e2e.exe

      # Finally run tests
      - name: Run test for ${{ matrix.device }}
        working-directory: e2e
        run: ../target/release/e2e test --stripped -d ${{ matrix.device }}