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

jobs:
  generate_everything:
    name: Full CI/CD Pipeline
    runs-on: ubuntu-latest
    container:
      image: ${{ vars.CONTAINER_REGISTRY }}/${{ env.IMAGE_NAME }}:latest

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

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

      - name: Pull latest changes
        run: |
          # Pull latest changes to prevent push conflicts
          git fetch origin main
          git rebase origin/main || {
            echo "⚠️ Git rebase failed, likely due to conflicts."
            git rebase --abort || true
            exit 1
          }

      - name: Find Skin Repositories for all users
        id: find_skins
        run: |
          set -eo pipefail
          total_valid_entries=0
          user_rows_file=$(mktemp)
          avatar_rows_file=$(mktemp)

          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"
            echo

            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"
                echo
                continue
              fi

              repos_count=$(echo "$repos_json" | jq 'length')
              echo "  📦 Found $repos_count repos"

              if [ "$repos_count" -eq 0 ]; then
                echo
                continue
              fi

              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 temp_dir.json \
                  -H "Authorization: token ${{ secrets.TOKEN }}" \
                  "$GITEA_API/repos/$owner/$repo/contents/Skins?_ts=$(date +%s)")

                if [ "$dir_code" != "200" ]; then
                  echo "      ❌ Skipped: No 'Skins/' directory found (HTTP $dir_code)"
                  continue
                fi

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

                if [ "$readme_code" != "200" ]; then
                  echo "      ❌ Skipped: No README.md found to extract osuid (HTTP $readme_code)"
                  continue
                fi

                content=$(jq -r .content < temp_readme.json | base64 -d || echo "")
                osu_id=$(echo "$content" | awk '/osuid:[ ]*[0-9]+/ { match($0, /[0-9]+/); print substr($0, RSTART, RLENGTH); exit }')

                if [ -z "$osu_id" ]; then
                  echo "      ❌ Skipped: osuid not found in README"
                  continue
                fi

                user_data=$(curl --retry 3 --retry-delay 5 -s \
                  "https://osu.ppy.sh/api/get_user?k=${{ secrets.OSUAPIV1 }}&u=$osu_id&type=id&_ts=$(date +%s)")

                if [ "$(echo "$user_data" | jq 'length')" -eq 0 ]; then
                  echo "      ❌ Skipped: osu! API returned no data for osuid $osu_id"
                  continue
                fi

                pp_rank=$(echo "$user_data" | jq -r '.[0].pp_rank // "9999999"')
                pp_country_rank=$(echo "$user_data" | jq -r '.[0].pp_country_rank // "-"')
                username=$(echo "$user_data" | jq -r '.[0].username // "'$owner'"')
                padded_rank=$(printf "%07d" "$pp_rank")

                printf "%s|<tr><td>%s</td><td>%s</td><td>%s</td><td><a href=\"https://osu.ppy.sh/users/%s\">Profile</a></td><td><a href=\"%s\">Skins</a></td></tr>\n" \
                  "$padded_rank" "$username" "$pp_rank" "$pp_country_rank" "$osu_id" "$html_url" >> "$user_rows_file"

                timestamp=$(( $(date +%s) / 86400 * 86400 ))
                printf "%s|<a href=\"%s\"><img src=\"https://a.ppy.sh/%s?%s\" width=175 height=175></a>\n" \
                  "$padded_rank" "$html_url" "$osu_id" "$timestamp" >> "$avatar_rows_file"

                echo "      ✅ Match: $username (Rank #$pp_rank), repo contains Skins/ directory"
                total_valid_entries=$((total_valid_entries + 1))
              done
            done
            page=$((page + 1))
          done

          {
            echo "user_rows_file=$user_rows_file"
            echo "avatar_rows_file=$avatar_rows_file"
            echo "total_valid_entries=$total_valid_entries"
          } >> "$GITHUB_OUTPUT"

          echo
          echo "✅ Total valid skin entries found: $total_valid_entries"

      - name: Update README with user skins
        id: update_readme
        run: |
          set -eo pipefail

          user_rows_file="${{ steps.find_skins.outputs.user_rows_file }}"
          avatar_rows_file="${{ steps.find_skins.outputs.avatar_rows_file }}"
          total_valid_entries="${{ steps.find_skins.outputs.total_valid_entries }}"
          README_PATH="${{ env.README_PATH }}"

          if [ "$total_valid_entries" -eq 0 ]; then
            echo "No valid entries found, skipping README update"
            exit 0
          fi

          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

          if git diff --quiet "$README_PATH"; then
            echo "README has not changed, skipping commit"
            rm -rf "${README_PATH}.bak"
            exit 0
          else
            echo "README updated"
            rm -rf "${README_PATH}.bak"
          fi

      - 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

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

      - name: Push changes and create tag
        run: |
          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