name: Pull request icon preview

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

permissions: {}

concurrency:
  group: icon-preview-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  icon-preview:
    name: Icon Preview
    if: github.repository == 'lucide-icons/lucide'
    runs-on: ubuntu-latest
    permissions:
      contents: read
      pull-requests: write # Required to post the preview comment

    steps:
      #  We check out the main branch of the main repository for security reasons.
      #  The changed SVGs are read from the pull request head as plain files with
      #  `git show`, so no code from the (untrusted) pull request is checked out or run.
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          repository: lucide-icons/lucide
          persist-credentials: false
      - uses: pnpm/action-setup@ea17c68df8912ef543352723c149a84f56e3d413 # v6.1.0
      - uses: actions/setup-node@820762786026740c76f36085b0efc47a31fe5020 # v7.0.0
        with:
          cache: 'pnpm'
          node-version-file: 'package.json'

      - name: Get changed files
        id: changed-files
        uses: tj-actions/changed-files@9426d40962ed5378910ee2e21d5f8c6fcbf2dd96 # v47.0.6
        with:
          files: icons/*.svg
          # The checkout is the base branch, so the PR head commit isn't available locally.
          use_rest_api: true

      - name: Install dependencies
        run: pnpm install --frozen-lockfile --filter @lucide/icon-preview-action...

      - name: Generate comment markup
        id: comment-markup
        uses: ./.github/actions/icon-preview
        with:
          changed-files: ${{ steps.changed-files.outputs.all_changed_files }}
          ref: ${{ github.event.pull_request.head.sha }}
          output-file: ${{ runner.temp }}/comment-markup.md

      - name: Find Comment
        if: steps.comment-markup.outputs.has-changes == 'true'
        uses: peter-evans/find-comment@b30e6a3c0ed37e7c023ccd3f1db5c6c0b0c23aad # v4.0.0
        id: pr-comment
        with:
          issue-number: ${{ github.event.pull_request.number }}
          comment-author: 'github-actions[bot]'
          body-includes: Added or changed icons

      - name: Create or update comment
        if: steps.comment-markup.outputs.has-changes == 'true'
        uses: peter-evans/create-or-update-comment@e8674b075228eee787fea43ef493e45ece1004c9 # v5.0.0
        with:
          comment-id: ${{ steps.pr-comment.outputs.comment-id }}
          issue-number: ${{ github.event.pull_request.number }}
          body-path: ${{ runner.temp }}/comment-markup.md
          edit-mode: replace