dc-template-lint.yml

name: Lint Domain Connect Templates
#version: 2024-05-10 v1

on:
  pull_request_target:
    branches:
      - master
  merge_group:
    branches:
      - master    

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
      - name: Setup refs
        id: setup-refs
        run: |
          echo "base_sha=${{ github.event.pull_request.base.sha }}${{ github.event.merge_group.base_sha }}" >> "$GITHUB_OUTPUT"
          echo "head_sha=${{ github.event.pull_request.head.sha }}${{ github.event.merge_group.head_sha }}" >> "$GITHUB_OUTPUT"
        
      - name: Check out code
        uses: actions/checkout@v3
        with:
            fetch-depth: 2
            ref: ${{ steps.setup-refs.outputs.head_sha }}

      - name: Dump GitHub context
        env:
            GITHUB_CONTEXT: ${{ toJson(github) }}
        run: echo "$GITHUB_CONTEXT"

      - name: Get all changed json files
        id: changed-json-files
        uses: tj-actions/changed-files@v42
        with:
          files: |
             **.json

      - name: Print all changed json files
        if: steps.changed-json-files.outputs.any_changed == 'true'
        env:
          ALL_CHANGED_FILES: ${{ steps.changed-json-files.outputs.all_changed_files }}
        run: |
          for file in ${ALL_CHANGED_FILES}; do
            echo "$file was changed"
          done

      - name: Check all modified json files for version update
        id: check-version-bump-needed
        if: steps.changed-json-files.outputs.modified_files_count > 0
        env:
            ALL_MODIFIED_FILES: ${{ steps.changed-json-files.outputs.modified_files }}
        run: |
            echo "version_bump_check<<EOF" >> $GITHUB_ENV
            echo "version_bump_check=0" >> "$GITHUB_OUTPUT"
            echo "Base: ${{ steps.setup-refs.outputs.base_sha }}"
            echo "Head: ${{ steps.setup-refs.outputs.head_sha }}"
            for file in ${ALL_MODIFIED_FILES}; do
                echo "$file was modified"
                echo "File diff $file:"
                git diff -U0 ${{ steps.setup-refs.outputs.base_sha }}..${{ steps.setup-refs.outputs.head_sha }} -- $file
                echo "Check version field diff:"
                if ! git diff -U0 ${{ steps.setup-refs.outputs.base_sha }}..${{ steps.setup-refs.outputs.head_sha }} -- $file | grep "version"; then
                    echo "No version update detected!"
                    echo "$file" >> $GITHUB_ENV
                    echo "version_bump_check=1" >> "$GITHUB_OUTPUT"
                fi
            done
            echo "EOF" >> $GITHUB_ENV

      - name: Comment PR with version check result
        if: steps.check-version-bump-needed.outputs.version_bump_check == 1 && github.event_name == 'pull_request_target'
        uses: thollander/actions-comment-pull-request@v2
        with:
          message: |
            Version bump needed for the files:
            ```
            ${{ env.version_bump_check }}
            ```
          comment_tag: version_bump

      - name: Remove comment PR with version check result if not needed
        if: steps.check-version-bump-needed.outputs.version_bump_check != 1 && github.event_name == 'pull_request_target'
        uses: thollander/actions-comment-pull-request@v2
        with:
          message: "Version bump not needed"
          mode: delete
          create_if_not_exists: false
          comment_tag: version_bump

      - name: Set up Go
        uses: actions/setup-go@v2
        with:
          go-version: '^1.16'

      - name: Install dc-template-linter
        run: |
            go install github.com/Domain-Connect/dc-template-linter@latest
            echo `go env GOPATH`/bin

      - name: Lint changed Templates
        if: steps.changed-json-files.outputs.any_changed == 'true'
        id: linter-output
        env:
            ALL_CHANGED_FILES: ${{ steps.changed-json-files.outputs.all_changed_files }}
        run: |
          echo "linter_error=0" >> "$GITHUB_OUTPUT"
          echo "linter_output<<EOF" >> $GITHUB_ENV
          for file in ${ALL_CHANGED_FILES}; do
            echo "Linter result for $file" >> $GITHUB_ENV
            `go env GOPATH`/bin/dc-template-linter -loglevel info $file 2>> $GITHUB_ENV || true
            if ! `go env GOPATH`/bin/dc-template-linter -tolerate warn $file; then
                echo "linter_error=1" >> "$GITHUB_OUTPUT"
                echo "Linter error for $file"
                `go env GOPATH`/bin/dc-template-linter -loglevel error $file || true
            fi
          done
          echo "EOF" >> $GITHUB_ENV

      - name: Comment PR with linter error result
        if: steps.linter-output.outputs.linter_error == 1 && github.event_name == 'pull_request_target'
        uses: thollander/actions-comment-pull-request@v2
        with:
          message: |
            Linter error:
            ```
            ${{ env.linter_output }}
            ```
          comment_tag: linter

      - name: Comment PR with linter OK result
        if: steps.linter-output.outputs.linter_error != 1 && github.event_name == 'pull_request_target'
        uses: thollander/actions-comment-pull-request@v2
        with:
            message: |
              Linter OK:
              ```
              ${{ env.linter_output }}
              ```
            comment_tag: linter

      - name: Fail job if version check or linter fails
        if: steps.linter-output.outputs.linter_error == 1 || steps.check-version-bump-needed.outputs.version_bump_check == 1
        run: exit 1