# Copyright (c) 2020-2021 Project CHIP Authors
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

name: Lint Code Base
on:
    push:
    pull_request:
    merge_group:
    workflow_dispatch:

concurrency:
    group: ${{ github.ref }}-${{ github.workflow }}-${{ (github.event_name == 'pull_request' && github.event.number) || (github.event_name == 'workflow_dispatch' && github.run_number) || github.sha }}
    cancel-in-progress: true

jobs:
    code-lints:
        runs-on: ubuntu-latest
        if: github.actor != 'restyled-io[bot]'

        container:
            image: connectedhomeip/chip-build:0.6.47

        steps:
            - name: Checkout
              uses: actions/checkout@v3

            # Bootstrap and checkout for internal scripts (like idl_lint)
            # to run
            - name: Checkout submodules & Bootstrap
              uses: ./.github/actions/checkout-submodules-and-bootstrap
              with:
                platform: linux

            - name: Check for matter lint errors
              if: always()
              run: |
                  for idl_file in $(find . -name '*.matter'); do
                      # TODO: all these conformance failures should be fixed
                      #       Issues exist for most of them:
                      #       https://github.com/project-chip/connectedhomeip/issues/19176
                      #       https://github.com/project-chip/connectedhomeip/issues/19175
                      #       https://github.com/project-chip/connectedhomeip/issues/19173
                      #       https://github.com/project-chip/connectedhomeip/issues/19169
                      #       https://github.com/project-chip/connectedhomeip/issues/22640
                      if [ "$idl_file" = './examples/all-clusters-app/all-clusters-common/all-clusters-app.matter' ]; then continue; fi
                      if [ "$idl_file" = './examples/log-source-app/log-source-common/log-source-app.matter' ]; then continue; fi
                      if [ "$idl_file" = './examples/placeholder/linux/apps/app1/config.matter' ]; then continue; fi
                      if [ "$idl_file" = './examples/placeholder/linux/apps/app2/config.matter' ]; then continue; fi
                      if [ "$idl_file" = './examples/thermostat/thermostat-common/thermostat.matter' ]; then continue; fi
                      if [ "$idl_file" = './examples/window-app/common/window-app.matter' ]; then continue; fi

                      # Test files are intentionally small and not spec-compilant, just parse-compliant
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/cluster_struct_attribute.matter" ]; then continue; fi
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/global_struct_attribute.matter" ]; then continue; fi
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/optional_argument.matter" ]; then continue; fi
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/several_clusters.matter" ]; then continue; fi
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/simple_attribute.matter" ]; then continue; fi
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/large_lighting_app.matter" ]; then continue; fi
                      if [ "$idl_file" = "./scripts/py_matter_idl/matter_idl/tests/inputs/large_all_clusters_app.matter" ]; then continue; fi

                      ./scripts/run_in_build_env.sh "./scripts/idl_lint.py --log-level warn $idl_file" >/dev/null || exit 1
                  done

            - name: Check broken links
              # On-push disabled until the job can run fully green
              # At that point the step should be enabled.
              if: github.event_name == 'workflow_dispatch'
              uses: gaurav-nelson/github-action-markdown-link-check@v1

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for incorrect error use in VerifyOrExit
              if: always()
              run: |
                  git grep -n "VerifyOrExit(.*, [A-Za-z]*_ERROR" -- './*' ':(exclude).github/workflows/lint.yml' && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of PRI*8, which are not supported on some libcs.
              if: always()
              run: |
                  git grep -n "PRI.8" -- './*' ':(exclude).github/workflows/lint.yml' ':(exclude)third_party/lwip/repo/lwip/src/include/lwip/arch.h' && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of PRI*16, which are not supported on some libcs.
              if: always()
              run: |
                  git grep -n "PRI.16" -- './*' ':(exclude).github/workflows/lint.yml' ':(exclude)third_party/lwip/repo/lwip/src/include/lwip/arch.h' && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of %zu, which are not supported on some libcs.
              if: always()
              run: |
                  git grep -n "%zu" -- './*' ':(exclude).github/workflows/lint.yml' && exit 1 || exit 0

            # Comments like '{{! ... }}' should be used in zap files
            - name: Do not allow TODO in generated files
              if: always()
              run: |
                  git grep -n 'TODO:' -- ./zzz_generated './*/zap-generated/*' && exit 1 || exit 0

            - name: Check for disallowed include files
              if: always()
              run: scripts/tools/check_includes.sh

            - name: Check for zcl.json and extension sync status
              if: always()
              run: scripts/tools/check_zcl_file_sync.py .

            - name: Ensure all PICS are set for tests (to true or false)
              if: always()
              run: |
                  scripts/tools/check_test_pics.py src/app/tests/suites/certification/ci-pics-values src/app/tests/suites/certification/PICS.yaml

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of 0x%u and the like, which lead to misleading output.
              if: always()
              run: |
                  git grep -n '0x%[0-9l.-]*[^0-9lxX".-]' -- './*' ':(exclude).github/workflows/lint.yml' && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of '"0x" PRIu*' and the like, which lead to misleading output.
              if: always()
              run: |
                  git grep -n '0x%[0-9-]*" *PRI[^xX]' -- './*' ':(exclude).github/workflows/lint.yml' && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.
            - name: Check for use of NSLog instead of Matter logging in Matter framework
              if: always()
              run: |
                  git grep -n 'NSLog(' -- src/darwin/Framework/CHIP && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself, as well as excluding the files
            # that implement the type-safe accessors
            - name: Check for use of 'emberAfReadAttribute' instead of the type-safe getters
              if: always()
              run: |
                  git grep -n 'emberAfReadAttribute' -- './*' ':(exclude).github/workflows/lint.yml' ':(exclude)src/app/util/af.h' ':(exclude)zzz_generated/app-common/app-common/zap-generated/attributes/Accessors.cpp' ':(exclude)src/app/zap-templates/templates/app/attributes/Accessors-src.zapt' ':(exclude)src/app/util/attribute-table.cpp'  && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself, as well as excluding the files
            # that implement the type-safe accessors, attribute writing from the wire, and some
            # Pigweed RPC code that seems hard to update.
            - name: Check for use of 'emberAfWriteAttribute' instead of the type-safe setters
              if: always()
              run: |
                  git grep -n 'emberAfWriteAttribute' -- './*' ':(exclude).github/workflows/lint.yml' ':(exclude)src/app/util/af.h' ':(exclude)zzz_generated/app-common/app-common/zap-generated/attributes/Accessors.cpp' ':(exclude)src/app/zap-templates/templates/app/attributes/Accessors-src.zapt' ':(exclude)src/app/util/attribute-table.cpp' ':(exclude)examples/common/pigweed/rpc_services/Attributes.h' ':(exclude)src/app/util/attribute-table.h' ':(exclude)src/app/util/ember-compatibility-functions.cpp' && exit 1 || exit 0

            # Run python Linter (flake8) and verify python files
            # ignore some style errors, restyler should do that
            - name: Check for errors using flake8 Python linter
              if: always()
              run: |
                  flake8 --extend-ignore=E501,W391

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of "SuccessOrExit(CHIP_ERROR_*)", which should probably be "SuccessOrExit(err = CHIP_ERROR_*)"
              if: always()
              run: |
                  git grep -n 'SuccessOrExit(CHIP_ERROR' -- './*' ':(exclude).github/workflows/lint.yml' && exit 1 || exit 0

            # git grep exits with 0 if it finds a match, but we want
            # to fail (exit nonzero) on match.  And we want to exclude this file,
            # to avoid our grep regexp matching itself.
            - name: Check for use of "SuccessOrExit(something-without-assignment(", which should probably be "SuccessOrExit(err = something("
              if: always()
              run: |
                  git grep -n 'SuccessOrExit([^=)]*(' -- './*' ':(exclude).github/workflows/lint.yml' && exit 1 || exit 0