name: Add Changed Icons comment

on:
  pull_request_target:
    paths:
      - 'icons/*.svg'
    branches:
      - main

jobs:
  lint-contributors:
    if: github.repository == 'lucide-icons/lucide'
    runs-on: ubuntu-latest
    permissions:
      contents: read
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
          ref: refs/pull/${{ github.event.pull_request.number }}/merge
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v35
        with:
          files: icons/*
      - uses: actions/setup-node@v3.8.1
      - name: Install simple-git (safer and faster than installing all deps)
        run: npm install simple-git
      - name: Generate annotations
        run: node ./scripts/updateContributors.mjs
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          FETCH_DEPTH: ${{ github.event.pull_request.commits }}
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
      - name: Generate annotations
        env:
          ANNOTATION_SEVERITY: notice
          ANNOTATION_TITLE: Contributors have changed!
          ANNOTATION_DESCRIPTION: Don't add people who have only performed automatic optimizations.
        run: |
          git diff --unified=0 -- icons/*.json | # diff icon metadata (unified=0 gives the correct chunk line number)
          perl -ne '/^(\+|- |@)/ && print' | # get chunks (lines that start with "+++", "@@", "+ ", "- ")
          perl -pe 's/\n/%0A/' | # url encode line breaks (\n -> %0A)
          perl -pe 's/%0A(\+\+\+ b\/)/\n\1/g' | # split chunks(one chunk per line)
          perl -pe "s/\+\+\+ b\/([^@]*)%0A@@ -(\d+)[^\s]* \+(\d+)[^@]*@@(.*)/::$ANNOTATION_SEVERITY file=\1,line=\2,endLine=\3,title=$ANNOTATION_TITLE::$ANNOTATION_DESCRIPTION%0A\4/"
          # Example for the previous substitution
          # input: +++ b/icons/accessibility.json%0A@@ -2,0 +3 @@%0A+  "contributors": ["hi"],%0A@@ -13 +14 @@%0A+}%0A
          # output: ::$ANNOTATION_SEVERITY file=icons/accessibility.json,line=2,endLine=3,title=$ANNOTATION_TITLE::$ANNOTATION_DESCRIPTION%0A%0A+  "contributors": ["hi"],%0A@@ -13 +14 @@%0A+}%0A
      # - name: Fail if contributors have changed
      #   run: git diff --exit-code -- icons/*.json

  generate-changed-icons-comment-data:
    if: github.repository == 'lucide-icons/lucide'
    runs-on: ubuntu-latest
    permissions:
      contents: read
    outputs:
      generate-1px-stroke-width: ${{ steps.generate-1px-stroke-width.outputs.body }}
      generate-2px-stroke-width: ${{ steps.generate-2px-stroke-width.outputs.body }}
      generate-3px-stroke-width: ${{ steps.generate-3px-stroke-width.outputs.body }}
      generate-24px-dpi-preview: ${{ steps.generate-24px-dpi-preview.outputs.body }}
      generate-cohesion-check-random: ${{ steps.generate-cohesion-check-random.outputs.body }}
      generate-cohesion-check-squares: ${{ steps.generate-cohesion-check-squares.outputs.body }}
      generate-x-rays: ${{ steps.generate-x-rays.outputs.body }}

    steps:
      - uses: actions/checkout@v2
        with:
          fetch-depth: 0
          ref: refs/pull/${{ github.event.pull_request.number }}/merge
      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@v35
        with:
          files: icons/*.svg
      - name: Generate 24px dpi preview
        id: generate-24px-dpi-preview
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          while IFS= read -r file; do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/dpi/24/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT
      - name: Generate cohesion check random
        id: generate-cohesion-check-random
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          for file in $(printf "%s\\n" icons/*.svg | shuf | head -n$(awk -F' ' '{print NF}' <<< '${{ steps.changed-files.outputs.all_changed_files }}')); do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/stroke-width/2/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT
      - name: Generate cohesion check squares
        id: generate-cohesion-check-squares
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          for file in $(printf "%s\\n" icons/*square*.svg | shuf | head -n$(awk -F' ' '{print NF}' <<< '${{ steps.changed-files.outputs.all_changed_files }}')); do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/stroke-width/2/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT
      - name: Generate 1px stroke-width
        id: generate-1px-stroke-width
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          while IFS= read -r file; do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/stroke-width/1/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT
      - name: Generate 2px stroke-width
        id: generate-2px-stroke-width
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          while IFS= read -r file; do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/stroke-width/2/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT
      - name: Generate 3px stroke-width
        id: generate-3px-stroke-width
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          while IFS= read -r file; do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/stroke-width/3/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT
      - name: Generate X-rays
        id: generate-x-rays
        env:
          CHANGED_FILES: ${{ steps.changed-files.outputs.all_changed_files }}
        run: |
          delimiter="$(openssl rand -hex 8)"
          echo "body<<$delimiter" >> $GITHUB_OUTPUT
          while IFS= read -r file; do
            cat "$file" | # get file content
            tr '\n' ' ' | # remove line breaks
            sed -e 's/<svg[^>]*>/<svg>/g' | # remove attributes from svg element
            base64 -w 0 | # encode svg
            sed "s|.*|<img width=\"400\" title=\"$file\" alt=\"$file\" src=\"https://lucide.dev/api/gh-icon/$(basename ${file//\.svg/})/&.svg\"/> |"
          done <<< "$CHANGED_FILES" | tr '\n' ' ' >> $GITHUB_OUTPUT
          echo >> $GITHUB_OUTPUT
          echo "$delimiter" >> $GITHUB_OUTPUT

  add-changed-icons-comment:
    if: github.repository == 'lucide-icons/lucide'
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
    needs: [generate-changed-icons-comment-data]
    steps:
      - name: Find Comment
        uses: peter-evans/find-comment@v2
        id: fc
        with:
          issue-number: ${{ github.event.pull_request.number }}
          comment-author: 'github-actions[bot]'
          body-includes: Added or changed icons
      - name: Create or update comment
        uses: peter-evans/create-or-update-comment@v2
        with:
          comment-id: ${{ steps.fc.outputs.comment-id }}
          issue-number: ${{ github.event.pull_request.number }}
          body: |
            ### Added or changed icons
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-2px-stroke-width }}<br/>
            <details>
            <summary>Preview cohesion</summary>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-cohesion-check-squares }}<br/>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-2px-stroke-width }}<br/>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-cohesion-check-random }}<br/>
            </details>
            <details>
            <summary>Preview stroke widths</summary>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-1px-stroke-width }}<br/>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-2px-stroke-width }}<br/>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-3px-stroke-width }}<br/>
            </details>
            <details>
            <summary>DPI Preview (24px)</summary>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-24px-dpi-preview }}
            </details>
            <details>
            <summary>Icon X-rays</summary>
            ${{ needs.generate-changed-icons-comment-data.outputs.generate-x-rays }}
            </details>
          edit-mode: replace