name: Validate PR

on: [pull_request_target]

permissions:
  pull-requests: write

jobs:
  validate-pr:
    if: github.repository == 'tabler/tabler-icons'
    runs-on: ubuntu-latest
    permissions:
      pull-requests: write
      contents: read
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
          ref: ${{ github.event.pull_request.head.sha }}
      
      - name: Set base branch and PR info
        run: |
          BASE_REF="${{ github.event.pull_request.base.ref }}"
          BASE_SHA="${{ github.event.pull_request.base.sha }}"
          PR_REPO="${{ github.event.pull_request.head.repo.full_name }}"
          PR_SHA="${{ github.event.pull_request.head.sha }}"
          echo "BASE_REF=${BASE_REF}" >> $GITHUB_ENV
          echo "BASE_SHA=${BASE_SHA}" >> $GITHUB_ENV
          echo "PR_REPO=${PR_REPO}" >> $GITHUB_ENV
          echo "PR_SHA=${PR_SHA}" >> $GITHUB_ENV
          # Fetch base branch to ensure it's available
          git fetch origin ${BASE_REF}:${BASE_REF} || true

      - name: Use Node.js 22
        uses: actions/setup-node@v4
        with:
          node-version: 22

      - uses: pnpm/action-setup@v4
        name: Install pnpm
        with:
          version: 10.26.2

      - name: Install system dependencies for canvas and rsvg-convert
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            build-essential \
            libcairo2-dev \
            libpango1.0-dev \
            libjpeg-dev \
            libgif-dev \
            librsvg2-dev \
            librsvg2-bin

      - name: Get pnpm store directory
        shell: bash
        run: |
          echo "STORE_PATH=$(pnpm store path --silent)" >> $GITHUB_ENV

      - uses: actions/cache@v4
        name: Setup pnpm cache
        with:
          path: ${{ env.STORE_PATH }}
          key: ${{ runner.os }}-pnpm-store-${{ hashFiles('**/pnpm-lock.yaml') }}
          restore-keys: |
            ${{ runner.os }}-pnpm-store-

      - name: Install dependencies
        run: pnpm install --no-frozen-lockfile

      - name: Add in progress comment
        id: add-in-progress-comment
        uses: thollander/actions-comment-pull-request@v3
        with:
          comment-tag: validate
          mode: upsert
          message: |
            🔄 Icons are being validated... Please wait...
        continue-on-error: true

      - name: Validate icons
        id: validate
        env:
          BASE_REF: ${{ env.BASE_REF }}
          BASE_SHA: ${{ env.BASE_SHA }}
        run: pnpm run --silent validate > ./comment-markup.md
        continue-on-error: true

      - name: Comment PR
        uses: thollander/actions-comment-pull-request@v3
        with:
          file-path: ./comment-markup.md
          comment-tag: validate
          mode: recreate

      - name: Generate icons comment
        id: generate-icons-comment
        env:
          BASE_REF: ${{ env.BASE_REF }}
          BASE_SHA: ${{ env.BASE_SHA }}
          PR_REPO: ${{ env.PR_REPO }}
          PR_SHA: ${{ env.PR_SHA }}
        run: pnpm run --silent generate-icons-comment > ./comment-icons.md || true
        continue-on-error: true

      - name: Check if icons were added
        id: check-icons
        run: |
          if [ -s ./comment-icons.md ]; then
            echo "has_icons=true" >> $GITHUB_OUTPUT
          else
            echo "has_icons=false" >> $GITHUB_OUTPUT
          fi

      - name: Comment PR with added icons
        if: steps.check-icons.outputs.has_icons == 'true'
        uses: thollander/actions-comment-pull-request@v3
        with:
          file-path: ./comment-icons.md
          comment-tag: added-icons
          mode: upsert

      - name: Remove comment with added icons
        if: steps.check-icons.outputs.has_icons == 'false'
        uses: thollander/actions-comment-pull-request@v3
        with:
          comment-tag: added-icons
          mode: delete