name: MarkdownLint on PR
on:
    pull_request:
        paths-ignore:
            - '**/changelog/**'

jobs:
    lint:
        runs-on: ubuntu-latest

        steps:
            - uses: actions/checkout@v3
              with:
                  fetch-depth: 2

            - name: Get repo changed files
              id: repo-changed-files
              uses: tj-actions/changed-files@v41
              with:
                  files: |
                      **/*.md
                  files_ignore: |
                      docs/**/*.md
                      .github/**/*.md

            - name: Get docs changed files
              id: docs-changed-files
              uses: tj-actions/changed-files@v41
              with:
                files: |
                  docs/**/*.md

            - name: Get docs manifest
              id: docs-manifest
              uses: tj-actions/changed-files@v41
              with:
                files: |
                  docs/docs-manifest.json

            - name: Setup PNPM
              uses: pnpm/action-setup@a3252b78c470c02df07e9d59298aecedc3ccdd6d

            - name: Setup Node
              uses: actions/setup-node@64ed1c7eab4cce3362f8c340dee64e5eaeef8f7c
              with:
                  node-version-file: .nvmrc
                  cache: pnpm
                  registry-url: 'https://registry.npmjs.org'

            - name: Install prerequisites
              run: |
                  pnpm i -g markdownlint-cli
                  npm --prefix .github/workflows/scripts install @actions/core

            - name: Lint repo changed markdown files
              run: |
                  RED="\e[1;31m"
                  GREEN="\e[1;32m"
                  NC="\e[0m"
                  set -e
                  rc=0
                  changed_files="${{ steps.repo-changed-files.outputs.all_changed_files  }}"
                  if [ -n "$changed_files" ]; then
                    lint_results=""
                    for file in $changed_files; do
                      lint_result=$( { cat "$file" | markdownlint --stdin ; } 2>&1 ) || rc="$?"
                      if [ $rc -ne 0 ]; then
                        lint_results="$lint_results\n>>>Linting failed for file: $file <<<\n$lint_result\n--------"
                      fi
                    done
                    if [ $rc -ne 0 ]; then
                      echo -e "${RED}Linting failed for one or more files${NC}"
                      echo -e "$lint_results"
                      exit 1
                    else
                      echo -e "${GREEN}Linting successful for all files.${NC}"
                    fi
                  else
                    echo "No repo markdown files changed."
                  fi

            - name: Check if docs manifest is valid JSON
              id: is-valid-json
              run: node .github/workflows/scripts/is-valid-json.js docs/docs-manifest.json

            - name: Lint docs changed markdown files
              run: |
                RED="\e[1;31m"
                GREEN="\e[1;32m"
                NC="\e[0m"
                set -e
                rc=0
                changed_files="${{ steps.docs-changed-files.outputs.all_changed_files }}"
                changed_manifest="${{ steps.docs-manifest.outputs.all_changed_files }}"
                is_valid_json="${{ steps.is-valid-json.outputs.is-valid-json }}"
                storybook="no"
                for L in ${{github.event.pull_request.labels.*.name}}
                do
                  if [ $L == "type: storybook" ]; then
                    storybook="yes"
                  fi
                done
                if [ -n "$changed_files" ]; then
                  lint_results=""
                  failed_check=""
                  for file in $changed_files; do
                    lint_result=$( { cat "$file" | markdownlint --stdin -c docs/.markdownlint.json ; } 2>&1 ) || rc="$?"
                    if [ $rc -ne 0 ]; then
                      lint_results="$lint_results\n>>>Linting failed for file: $file <<<\n$lint_result\n--------"
                    fi
                  done

                  if [ $rc -ne 0 ]; then
                    echo -e "${RED}Linting failed for one or more files${NC}"
                    echo -e "$lint_results"
                    failed_check="lint"
                  else
                    echo -e "${GREEN}Linting successful for all files.${NC}"
                  fi

                  if [ "$storybook" == "no" ]; then
                    if [ -z "$changed_manifest" ]; then
                      echo -e "${RED}Changes in the docs folder require updating the manifest${NC}"
                      failed_check="manifest"
                    fi
                    if [ "$is_valid_json" == "no" ]; then
                      echo -e "${RED}'docs/docs-manifest.json' is not valid JSON${NC}"
                      failed_check="manifest"
                    fi
                    if [ "$failed_check" == "manifest" ]; then
                      echo -e "Generate a manifest with 'pnpm utils md-docs create docs woocommerce -o docs/docs-manifest.json'"
                    fi
                  fi

                  if [ -n "$failed_check" ]; then
                    exit 1
                  fi
                else
                  echo "No docs markdown files changed."
                fi