ci.yml

name: Build and test
on:
  push:
    # Empty configuration means use default (ie. test all branches)
    branches-ignore:
      # Everything would have passed bors before going into devel
      - devel
      # Bors temporary branches
      - staging.tmp
      - trying.tmp
      - staging-squash-merge.tmp
      # Github Merge Queue temporary branches
      - gh-readonly-queue/**

  pull_request:
    # Only take PRs to devel
    branches:
      - devel

    # Type of events to run CI on
    types:
      - opened
      - synchronize
      - reopened
      - ready_for_review

  merge_group:
    # Test all additions to merge queue

# Run every script actions in bash
defaults:
  run:
    shell: bash

jobs:
  pre_run:
    name: Provide additional context for the workflow
    runs-on: ubuntu-latest
    outputs:
      skip: ${{ steps.skip_result.outputs.result }}
      target_matrix: ${{ steps.matrix.outputs.result }}
      shared_builder: ${{ steps.matrix.outputs.shared }}

    steps:
      - id: run_cond
        uses: fkirc/skip-duplicate-actions@v5.3.0
        with:
          # Cancel CI on outdated commits
          cancel_others: true
          # Don't skip when a duplicated run (ie. from a PR) is done.
          #
          # Only CI in upstream has docs publishing rights.
          skip_after_successful_duplicate: false
          # Do not skip on push, dispatched or cron
          do_not_skip: '["push", "workflow_dispatch", "schedule"]'

      - id: skip_result
        name: Whether to skip checks
        run: |
          if [[ '${{ steps.run_cond.outputs.should_skip }}' == true ]]; then
            echo "result=true" >> $GITHUB_OUTPUT
          elif [[ '${{ github.event.pull_request.draft }}' == true ]]; then
            echo "Pull request is in draft state, skipping"
            echo "result=true" >> $GITHUB_OUTPUT
          else
            echo "result=false" >> $GITHUB_OUTPUT
          fi

      - id: matrix
        name: Obtain build target matrix
        run: |
          # This matrix will be shared by the jobs following it.
          #
          # The schema is:
          # [
          #   {
          #     name: String,  ## The name of the target being tested
          #     runner: String ## The runner to use of this target
          #     shared_builder?: Bool ## Whether this target should be used to
          #                           ## build artifacts shared between
          #                           ## platforms. Only one target may have
          #                           ## this attribute.
          #   }
          # ]
          cat << "EOF" > matrix.json
          [
            {
              "name": "Linux",
              "runner": "ubuntu-20.04",
              "shared_builder": true
            },
            {
              "name": "macOS",
              "runner": "macos-11"
            }
          ]
          EOF

          # Use jq to compact the matrix into one line to be used as the result
          echo "result=$(jq -c . matrix.json)" >> $GITHUB_OUTPUT
          # Isolate the shared builder into its own thing as well
          echo "shared=$(jq -c '.[] | select(.shared_builder)' matrix.json)" >> $GITHUB_OUTPUT

  binaries:
    needs: [pre_run]
    if: needs.pre_run.outputs.skip != 'true'

    strategy:
      fail-fast: false

      matrix:
        target: ${{ fromJson(needs.pre_run.outputs.target_matrix) }}

    name: Build release binaries (${{ matrix.target.name }})
    runs-on: ${{ matrix.target.runner }}

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Enable annotations
        run: echo "::add-matcher::.github/nim-problem-matcher.json"

      - name: Build release binaries
        run: ./koch.py all

      - name: Upload workspace to artifacts
        uses: ./.github/actions/upload-compiler

  test:
    needs: [pre_run, binaries]

    strategy:
      fail-fast: false

      matrix:
        target: ${{ fromJson(needs.pre_run.outputs.target_matrix) }}
        # This controls the testament "batch" feature.
        #
        # If any additional batches are added, increment `total_batch` as well.
        #
        # This feature allow us to parallelize testing.
        batch: [0, 1]
        # This tells testament how many batches are used. Have to be placed in
        # an array due to how Github Actions process matrices.
        total_batch: [2]

    name: "Test the compiler and stdlib (${{ matrix.target.name }}, batch #${{ matrix.batch }})"
    runs-on: ${{ matrix.target.runner }}

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: ./.github/actions/download-compiler

      - name: Install NodeJS
        uses: actions/setup-node@v3
        with:
          node-version: "16"

      - name: Install dependencies (Linux)
        if: runner.os == 'Linux'
        run: |
          deps=(
            # Required by ARC/ORC memory leak tests (only enabled on linux x64)
            libc6-dbg
            valgrind
          )

          sudo apt-get update
          sudo apt-get install "${deps[@]}"

      - name: Install dependencies (macOS)
        if: runner.os == 'macOS'
        run: |
          brew update

      - name: Run tester
        run: ./koch.py test --batch:'${{ matrix.batch }}_${{ matrix.total_batch }}' all

      - name: Print all test errors
        if: failure()
        run: bin/nim r tools/ci_testresults

  tooling:
    needs: [pre_run, binaries]

    strategy:
      fail-fast: false

      matrix:
        target: ${{ fromJson(needs.pre_run.outputs.target_matrix) }}

    name: Build and test tooling (${{ matrix.target.name }})
    runs-on: ${{ matrix.target.runner }}

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: ./.github/actions/download-compiler

      - name: Enable annotations
        run: echo "::add-matcher::.github/nim-problem-matcher.json"

      - name: Test tooling
        run: ./koch.py testTools

  source:
    needs: [pre_run, binaries]

    name: Build source archive
    runs-on: ${{ fromJson(needs.pre_run.outputs.shared_builder).runner }}

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: ./.github/actions/download-compiler

      - name: Enable annotations
        run: echo "::add-matcher::.github/nim-problem-matcher.json"

      - name: Generate csources
        run: ./koch.py csource -d:danger

      - id: archive
        name: Build release source
        run: |
          ./koch.py archive

          archive=build/$(jq -r .name build/archive.json)

          # Rename the archive manifest to avoid collision with manifest of
          # other archives
          mv build/archive.json build/source.json

          echo "archive=$archive" >> $GITHUB_OUTPUT
          echo "metadata=build/source.json" >> $GITHUB_OUTPUT

      - name: Publish source archive to artifacts
        uses: actions/upload-artifact@v3
        with:
          name: source archive
          path: |
            ${{ steps.archive.outputs.archive }}
            ${{ steps.archive.outputs.metadata }}
          if-no-files-found: error

  source_binaries:
    needs: [pre_run, source]

    strategy:
      fail-fast: false

      matrix:
        target: ${{ fromJson(needs.pre_run.outputs.target_matrix) }}

    name: Build release artifacts from source archive (${{ matrix.target.name }})
    runs-on: ${{ matrix.target.runner }}

    steps:
      - name: Download source archive
        uses: actions/download-artifact@v3
        with:
          name: source archive
          path: source-archive

      - name: Unpack source archive
        run: |
          archive=source-archive/$(jq -r .name source-archive/source.json)
          # Pipe from zstd to tar because macOS' tar does not support unpacking zstd
          zstd -c -d "$archive" | tar -xf - --strip-components 1

      - name: Build release binaries
        run: ./koch.py all

      # Note: keep synchronized with package job
      - name: Build docs
        run: |
          ./koch.py doc \
            --git.url:'https://github.com/${{ github.repository }}' \
            --git.commit:'${{ github.sha }}' \
            --git.devel:devel

          # Remove leftover nimskullcache
          rm -rf doc/html/nimskullcache

      - id: package
        name: Create release package
        run: |
          ./koch.py unixrelease

          archive=build/$(jq -r .name build/archive.json)
          # Rename the archive manifest to avoid collision with other artifacts
          os=$(jq -r .os build/archive.json)
          cpu=$(jq -r .cpu build/archive.json)
          metadata=build/${os}_${cpu}.json
          mv build/archive.json "$metadata"

          # Let the uploader know what to upload
          echo "archive=$archive" >> $GITHUB_OUTPUT
          echo "metadata=$metadata" >> $GITHUB_OUTPUT

      - name: Upload release package to artifacts
        uses: actions/upload-artifact@v3
        with:
          name: binaries from source archive
          path: |
            ${{ steps.package.outputs.archive }}
            ${{ steps.package.outputs.metadata }}
          if-no-files-found: error

  package:
    needs: [pre_run, binaries]

    strategy:
      fail-fast: false

      matrix:
        target: ${{ fromJson(needs.pre_run.outputs.target_matrix) }}

    name: Build docs and release artifacts (${{ matrix.target.name }})
    runs-on: ${{ matrix.target.runner }}

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: ./.github/actions/download-compiler

      - name: Enable annotations
        run: echo "::add-matcher::.github/nim-problem-matcher.json"

      # Note: keep synchronized with source_binaries job
      - name: Build docs
        run: |
          ./koch.py doc \
            --git.url:'https://github.com/${{ github.repository }}' \
            --git.commit:'${{ github.sha }}' \
            --git.devel:devel

          # Remove leftover nimskullcache
          rm -rf doc/html/nimskullcache

      - id: package
        name: Create release package
        run: |
          ./koch.py unixrelease

          archive=build/$(jq -r .name build/archive.json)
          # Rename the archive manifest to avoid collision with other artifacts
          os=$(jq -r .os build/archive.json)
          cpu=$(jq -r .cpu build/archive.json)
          metadata=build/${os}_${cpu}.json
          mv build/archive.json "$metadata"

          # Let the uploader know what to upload
          echo "archive=$archive" >> $GITHUB_OUTPUT
          echo "metadata=$metadata" >> $GITHUB_OUTPUT

      - name: Upload docs to artifacts
        if: matrix.target.shared_builder
        uses: actions/upload-artifact@v3
        with:
          # If this name is updated, tweak publisher.yml
          name: Generated docs
          path: doc/html/
          if-no-files-found: error

      - name: Upload release package to artifacts
        uses: actions/upload-artifact@v3
        with:
          name: release binaries
          path: |
            ${{ steps.package.outputs.archive }}
            ${{ steps.package.outputs.metadata }}
          if-no-files-found: error

  test_package:
    needs: [pre_run, package, source_binaries]

    name: Test release artifacts
    runs-on: ${{ fromJSON(needs.pre_run.outputs.shared_builder).runner }}

    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - uses: ./.github/actions/download-compiler

      - name: Enable annotations
        run: echo "::add-matcher::.github/nim-problem-matcher.json"

      - name: Download binaries built from source archive
        uses: actions/download-artifact@v3
        with:
          name: binaries from source archive
          path: binary-from-source

      - name: Download release package
        uses: actions/download-artifact@v3
        with:
          name: release binaries
          path: release-binary

      - name: Download release source archive
        uses: actions/download-artifact@v3
        with:
          name: source archive
          path: source-archive

      - name: Install tools
        run: |
          sudo apt-get update
          sudo apt-get install -yqq --no-install-recommends diffoscope

      - id: diff
        name: Binaries from git and source archive should be the same
        run: |
          output_html=$RUNNER_TEMP/diffoscope.html
          run_diff() {
            # Exclude directory metadata as we only care about the files themselves
            diffoscope \
              --html="$output_html" \
              --exclude-directory-metadata=yes \
              release-binary/ binary-from-source/
          }
          if ! run_diff; then
            echo "::error::There are differences when building from source archive compared to building from git, check the output uploaded to artifacts for more details"
            echo "result=$output_html" >> $GITHUB_OUTPUT
            exit 1
          else
            echo "Success! Binaries built from git and source archive are the same"
          fi

      - name: Upload difference test result on failure
        if: failure() && steps.diff.outputs.result != ''
        uses: actions/upload-artifact@v3
        with:
          name: differences between binary from source archive and git
          path: ${{ steps.diff.outputs.result }}

      - name: Verify archive manifests
        run: |
          # Verify them by using the manifest builder tool to create a manifest
          # for the full bundle.
          bin/nim c tools/release_manifest.nim
          cd release-binary
          ../tools/release_manifest add ../source-archive/*.json *.json

          # Print the resulting manifest
          echo "Success! Generated manifest:"
          jq . manifest.json

      # This allow the publisher to run the tool directly without having to
      # clone the compiler.
      - name: Upload release manifest tool
        uses: actions/upload-artifact@v3
        with:
          name: release manifest tool
          path: tools/release_manifest

  passed:
    name: All check passed
    needs:
      - binaries
      - test
      - tooling
      - source
      - source_binaries
      - package
      - test_package
    if: always()
    runs-on: ubuntu-latest

    steps:
      - name: Raise failure
        if: contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')
        run: |
          echo "::error::There are failing required jobs"
          exit 1