name: Update Community Skins README

on:
  schedule:
    - cron: '*/5 * * * *'
  workflow_dispatch:

env:
  README_PATH: "${{ github.workspace }}/README.md"
  IMAGE_NAME: osc/skins-image
  GITEA_API: https://${{ vars.CONTAINER_REGISTRY }}/api/v1
  ARTIFACT_PATH: "/data"
  USER_ROWS_FILE: "/data/user_rows.txt"
  AVATAR_ROWS_FILE: "/data/avatar_rows.txt"

jobs:
  gather-skins:
    runs-on: ubuntu-latest
    container:
      image: ${{ vars.CONTAINER_REGISTRY }}/${{ env.IMAGE_NAME }}:latest

    steps:
      - id: mask-secrets
        name: Mask Sensitive Tokens
        run: |
          echo "::add-mask::${{ secrets.TOKEN }}"
          echo "::add-mask::${{ secrets.OSUAPIV1 }}"

      - id: checkout-code
        name: Checkout Repository
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.TOKEN }}

      - id: fetch-skins-data
        name: Find Repos Containing /Skins Directory
        run: |
          set -eo pipefail
          mkdir -p "$ARTIFACT_PATH"
          total_valid_entries=0

          page=1
          while :; do
            users_json=$(curl --retry 3 --retry-delay 5 -sSL \
              -H "Authorization: token ${{ secrets.TOKEN }}" \
              "$GITEA_API/admin/users?limit=50&page=$page&_ts=$(date +%s)")
            count=$(echo "$users_json" | jq 'length')
            [ "$count" -eq 0 ] && break

            echo "📄 Found $count users on page $page"

            for i in $(seq 0 $((count - 1))); do
              user_login=$(echo "$users_json" | jq -r ".[$i].login")
              echo "🔍 User: $user_login"

              repos_json=$(curl --retry 3 --retry-delay 5 -sSL \
                -H "Authorization: token ${{ secrets.TOKEN }}" \
                "$GITEA_API/users/$user_login/repos?_ts=$(date +%s)")

              if ! echo "$repos_json" | jq -e . >/dev/null 2>&1; then
                echo "  ⚠️ Could not parse repos for $user_login"
                continue
              fi

              repos_count=$(echo "$repos_json" | jq 'length')
              echo "  📦 $repos_count repos found"
              [ "$repos_count" -eq 0 ] && continue

              for j in $(seq 0 $((repos_count - 1))); do
                owner=$(echo "$repos_json" | jq -r ".[$j].owner.login")
                repo=$(echo "$repos_json" | jq -r ".[$j].name")
                html_url=$(echo "$repos_json" | jq -r ".[$j].html_url")
                echo "    → Repo: $owner/$repo"

                dir_code=$(curl --retry 3 --retry-delay 5 -s -w "%{http_code}" -o /dev/null \
                  -H "Authorization: token ${{ secrets.TOKEN }}" \
                  "$GITEA_API/repos/$owner/$repo/contents/Skins?_ts=$(date +%s)")

                if [ "$dir_code" = "200" ]; then
                  echo "      ✅ /Skins directory found"

                  printf "%07d|<tr><td>%s</td><td>%s</td><td>%s</td><td>-</td><td><a href=\"%s\">Skins</a></td></tr>\n" \
                    "$((9999999 + total_valid_entries))" "$user_login" "-" "-" "$html_url" >> "$USER_ROWS_FILE"

                  printf "%07d|<a href=\"%s\">🖼️</a>\n" "$((9999999 + total_valid_entries))" "$html_url" >> "$AVATAR_ROWS_FILE"

                  total_valid_entries=$((total_valid_entries + 1))
                else
                  echo "      ❌ Skipped: No /Skins directory (HTTP $dir_code)"
                fi
              done
            done
            page=$((page + 1))
          done

          echo
          echo "✅ Total repos with /Skins: $total_valid_entries"

      - id: upload-tables
        name: Upload artifacts
        uses: actions/upload-artifact@v3
        with:
          name: skin-tables
          path: ${{ env.ARTIFACT_PATH }}

  generate-readme:
    needs: gather-skins
    runs-on: ubuntu-latest
    container:
      image: ${{ vars.CONTAINER_REGISTRY }}/${{ env.IMAGE_NAME }}:latest
    outputs:
      readme_changed: ${{ steps.check-readme.outputs.changed }}

    steps:
      - id: download-skin-data
        name: Download skin data
        uses: actions/download-artifact@v3
        with:
          name: skin-tables
          path: ${{ env.ARTIFACT_PATH }}

      - id: checkout-code
        name: Checkout Repository
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.TOKEN }}

      - id: generate-readme
        name: Generate README
        run: |
          set -eo pipefail
          cp "$README_PATH" "${README_PATH}.bak"

          cat > "$README_PATH" <<-EOF
          # osu! Swiss Community Skin collection

          Welcome to the osu! Swiss Community Skin collection, this repository archives and showcases Skins osc members use.

          Enjoy looking around, click file names to download the skins and click on the images to see more about the skins.

          ## How do I add my skins here?

          If you're interested in adding your skins here please follow this tutorial [how-to-use](/how-to-use.md)

          ## Skins

          <details>
            <summary>list instead of icons</summary>
            <br />
            <table border="1" cellpadding="5" cellspacing="0">
              <thead>
                <tr>
                  <th>Name</th>
                  <th>Global Rank</th>
                  <th>Country Rank</th>
                  <th>Profile</th>
                  <th>Skins</th>
                </tr>
              </thead>
              <tbody>
          EOF

          sort -t '|' -k1,1n "$USER_ROWS_FILE" | cut -d'|' -f2- | sed 's/^/        /' >> "$README_PATH"

          cat >> "$README_PATH" <<-EOF
              </tbody>
            </table>
          </details>

          <p align="center">
          EOF

          sort -t '|' -k1,1n "$AVATAR_ROWS_FILE" | cut -d'|' -f2- | sed 's/^/  /' >> "$README_PATH"

          cat >> "$README_PATH" <<-EOF
          </p>
          EOF

      - id: check-readme
        name: Check for README changes
        run: |
          if git diff --quiet "$README_PATH"; then
            echo "changed=false" >> "$GITHUB_OUTPUT"
          else
            echo "changed=true" >> "$GITHUB_OUTPUT"
          fi

      - id: upload-updated-readme
        name: Upload updated README
        if: steps.check-readme.outputs.changed == 'true'
        uses: actions/upload-artifact@v3
        with:
          name: updated-readme
          path: ${{ env.README_PATH }}

  commit-readme:
    needs: generate-readme
    if: needs.generate-readme.outputs.readme_changed == 'true'
    runs-on: ubuntu-latest
    container:
      image: ${{ vars.CONTAINER_REGISTRY }}/${{ env.IMAGE_NAME }}:latest

    steps:
      - id: download-updated-readme
        name: Download README
        uses: actions/download-artifact@v3
        with:
          name: updated-readme
          path: .

      - id: checkout-code
        name: Checkout Repository
        uses: actions/checkout@v4
        with:
          token: ${{ secrets.TOKEN }}

      - id: configure-git
        name: Configure Git
        run: |
          git config user.email "arlind@sulej.ch"
          git config user.name "ci-bot"
          git config lfs.https://${{ vars.CONTAINER_REGISTRY }}/arlind/skins.git/info/lfs.locksverify true

      - id: commit-and-push
        name: Commit and Push README
        run: |
          git config advice.addIgnoredFile false
          git add README.md
          git commit -m "[ci skip] push back from pipeline" -q || echo "No changes to commit"

          if [ "${GITHUB_REF}" = "refs/heads/main" ]; then
            git push origin HEAD:main || echo "No changes to push"
          else
            git push origin HEAD:"${GITHUB_REF_NAME}" || echo "No changes to push"
          fi