name: Regression

# on: [push, pull_request] - enable when testing
on:
  pull_request:
    branches:
      - main

permissions:
  contents: read

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Install things
        run: |
          sudo apt-get update
          sudo apt-get install -y meson wget2 librsvg2-dev librsvg2-bin ninja-build git gcc-multilib g++-multilib earlyoom

      - name: Compile Thorvg PR
        run: |
          meson . build -Dtools=svg2png,lottie2gif -Dsavers=gif -Db_sanitize=address,undefined
          sudo ninja -C build install

      - name: Compile Thorvg Develop
        run: |
          git clone https://github.com/thorvg/thorvg.git thorvg_develop
          cd thorvg_develop
          meson . build -Dtools=svg2png
          sudo ninja -C build install
          cd ..

      - name: Download SVG Regression finder and setup settings
        run: |
          wget -q https://github.com/qarmin/SVG-regression-finder/releases/download/0.4.0/svg_tester
          chmod +x ./svg_tester

      - name: Prepare valid files to test
        run: |
          wget -q https://github.com/qarmin/SVG-regression-finder/releases/download/0.3.0/ThorvgValidFiles.zip -O files.zip
          unzip -q files.zip
          rm files.zip
          wget -q https://github.com/qarmin/SVG-regression-finder/releases/download/0.3.0/ThorvgNotValidFiles.zip -O files.zip
          unzip -q files.zip
          rm files.zip
          mv ThorvgValidFiles FilesToTest
          find ThorvgNotValidFiles -type f -exec mv {} FilesToTest \;
          rmdir ThorvgNotValidFiles

      - name: Setup settings for crash/leak/timeout tests
        run: |
          mv test/regression/settings_crash_leak.toml settings.toml

      - name: Run regression finder tests
        run: |
          ./svg_tester 2>&1 | tee result_crashes.txt

      - name: Setup settings for comparison tests
        run: |
          mv test/regression/settings_comparison.toml settings.toml

      - name: Store Crashing/Leaking/Timing out Images
        uses: actions/upload-artifact@v4
        with:
          name: crashing-leaking-timeouting-images
          path: BrokenFILES
          if-no-files-found: ignore

      - name: Clean Data
        run: |
          rm -rf BrokenSVG || true
          rm -rf FilesToTest || true
          rm -rf ProblematicSVG || true
          rm -rf IgnoredSVG || true
          rm -rf BrokenFILES || true

      # Test valid files
      - name: Prepare valid files to test
        run: |
          wget -q https://github.com/qarmin/SVG-regression-finder/releases/download/0.3.0/ThorvgValidFiles.zip -O files.zip
          unzip -q files.zip
          rm files.zip
          mv ThorvgValidFiles FilesToTest

      - name: Run regression finder tests
        run: |
          ./svg_tester 2>&1 | tee result_valid_files.txt

      - name: Store Broken Images for valid inputs
        uses: actions/upload-artifact@v4
        with:
          name: differences-in-valid-files
          path: BrokenSVG
          if-no-files-found: ignore

      - name: Store Problematic Images for valid inputs
        uses: actions/upload-artifact@v4
        with:
          name: problematic-images-in-valid-files
          path: ProblematicSVG
          if-no-files-found: ignore

      - name: Clean Data
        run: |
          rm -rf BrokenSVG || true
          rm -rf FilesToTest || true
          rm -rf ProblematicSVG || true
          rm -rf IgnoredSVG || true
          rm -rf BrokenFILES || true

      # Test files that may not work currently good with Thorvg, errors from this are not critical
      # it is possible that this will find also some improvements
      - name: Prepare not valid to test
        run: |
          wget -q https://github.com/qarmin/SVG-regression-finder/releases/download/0.3.0/ThorvgNotValidFiles.zip -O files.zip
          unzip -q files.zip
          rm files.zip
          mv ThorvgNotValidFiles FilesToTest

      - name: Run invalid files tests
        run: |
          ./svg_tester 2>&1 | tee result_not_valid_files.txt

      - name: Store Broken Images for not valid inputs
        uses: actions/upload-artifact@v4
        with:
          name: differences-in-not-valid-files
          path: BrokenSVG
          if-no-files-found: ignore

      - name: Store Problematic Images for not valid inputs
        uses: actions/upload-artifact@v4
        with:
          name: problematic-images-in-not-valid-files
          path: ProblematicSVG
          if-no-files-found: ignore

      - name: Clean Data
        run: |
          rm -rf BrokenSVG || true
          rm -rf FilesToTest || true
          rm -rf ProblematicSVG || true
          rm -rf IgnoredSVG || true
          rm -rf BrokenFILES || true

      - name: Test png reproducibility
        run: |
          wget -q https://github.com/thorvg/thorvg/files/11356766/AA_5.svg.zip -O files.zip
          unzip -q files.zip
          rm files.zip
          cp test/regression/check_same_image_size.py check_same_image_size.py
          # Forces to run tasks on different threads if possible, which should help find problem with data races
          taskset -c 0-15 python3 check_same_image_size.py AA_5.svg ./build/src/tools/svg2png/tvg-svg2png 100 500 2>&1 | tee result_image_size.txt

      - name: Check results
        run: |
          export PATH=$PATH:~/.local/bin/
          python3 "${GITHUB_WORKSPACE}/.github/workflows/regression_check.py"

          if [[ -f "fail_ci.txt" ]]; then
            (
              echo '```'
              cat "fail_ci.txt"
              echo '```'
            ) >> "$GITHUB_STEP_SUMMARY"
          fi

      - name: Find Comment
        uses: peter-evans/find-comment@v3
        id: fc
        with:
          issue-number: ${{ github.event.pull_request.number }}
          comment-author: 'github-actions[bot]'
          body-includes: Regression report

# TODO - not works
#      - name: Create or update comment
#        uses: peter-evans/create-or-update-comment@v4
#        with:
#          comment-id: ${{ steps.fc.outputs.comment-id }}
#          issue-number: ${{ github.event.pull_request.number }}
#          body-path: 'comment.txt'
#          edit-mode: replace

      - name: Fail CI if regression found
        run: |
          if [[ -f "fail_ci.txt" ]]; then
            echo "Check Check results section for more details which tests failed"
            exit 1
          fi