name: Generate Skin previews, OSK files and per skin documentation

on:
  push:
    paths:
      - '.gitea/workflows/*'
      - 'Skins/**/*'
  workflow_dispatch:
    inputs:
      force_rebuild:
        description: 'Force rebuild all skins'
        required: false
        default: 'false'
      target_skins:
        description: 'Comma-separated list of skin folder names to rebuild (e.g., "Skin1,Skin2")'
        required: false
        default: ''

env:
  DANSER_PATH: "/app/danser/danser-cli"
  DANSER_DIR: "/app/danser"
  DANSER_VIDEO_DIR: "/app/danser/videos"
  DANSER_SCREENSHOT_DIR: "/app/danser/screenshots"
  SKINS_DIR: "${{ github.workspace }}/Skins"
  DANSER_SKINS_DIR: "/app/danser/skins"
  DEFAULT_SKIN_DIR: "/app/danser/skins/default-skin"
  REPO_SCREENSHOT_DIR: "${{ github.workspace }}/media/gameplay"
  REPO_MOD_ICONS_DIR: "${{ github.workspace }}/media/icons"
  REPO_RANKING_PANEL_DIR: "${{ github.workspace }}/media/panel"
  REPO_THUMBNAIL_DIR: "${{ github.workspace }}/media/thumbnail"
  SETTINGS_JSON_PATH: "/app/danser/settings/default.json"
  README_PATH: "${{ github.workspace }}/README.md"
  GAMEPLAY_REPLAY_PATH: "/app/danser/custom-replays/yomi_yori.osr"
  THUMBNAIL_REPLAY_PATH: "/app/danser/custom-replays/combo_colors.osr"
  PANEL_REPLAY_PATH: "/app/danser/custom-replays/2000_gekis.osr"
  OSK_PATH: "${{ github.workspace }}/export"
  IMAGE_NAME: osc/skins-image
  REGISTRY_URL: "https://${{ vars.CONTAINER_REGISTRY }}"
  OSU_ID: ${{ vars.OSUID }}
  DOC_DIR: "${{ github.workspace }}/docs"

jobs:
  generate_everything:
    name: Full CI/CD Pipeline
    runs-on: danser
    container:
      image: ${{ vars.CONTAINER_REGISTRY }}/${{ env.IMAGE_NAME }}:latest
      options: >-
        --gpus all
        --privileged
        --security-opt seccomp=unconfined
        --security-opt apparmor=unconfined
        --cap-add=ALL
        --env NVIDIA_DRIVER_CAPABILITIES=all
        --env NVIDIA_VISIBLE_DEVICES=all
        --user 0:0
    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
          tags: true
          token: ${{ secrets.TOKEN }}

      - name: Discover all skins
        shell: bash
        run: |
          echo "Discovering all skins in $SKINS_DIR…"
          mapfile -t skins < <(
            find "$SKINS_DIR" -mindepth 1 -maxdepth 1 -type d \
              | sed 's|'"$SKINS_DIR"'/||'
          )
          {
            echo 'ALL_SKINS_DIR<<EOF'
            for s in "${skins[@]}"; do
              echo "$s"
            done
            echo 'EOF'
          } >> "$GITHUB_ENV"
          echo "→ ALL_SKINS_DIR set (newline-delimited list)"

      - name: Detect Changed Skin Directories
        shell: bash
        run: |
          echo "[Detect Changed Skin Directories Started]"

          readarray -t all_skins <<< "$ALL_SKINS_DIR"

          force_rebuild="${{ github.event.inputs.force_rebuild }}"
          target_skins="${{ github.event.inputs.target_skins }}"
          skins=()
          deleted_skins=()

          echo "→ Force rebuild flag: $force_rebuild"
          echo "→ Target skins input: $target_skins"

          if [[ "$force_rebuild" == "true" ]]; then
            echo "→ Force rebuild is enabled. Using ALL_SKINS_DIR for full list…"
            skins=("${all_skins[@]}")
            echo "    ✓ Found ${#skins[@]} skin directories (from ALL_SKINS_DIR)"

          elif [[ -n "$target_skins" ]]; then
            echo "→ Target skins specified. Using target_skins input…"
            IFS=',' read -r -a input_skins <<< "$target_skins"
            for s in "${input_skins[@]}"; do
              s="${s#"${s%%[![:space:]]*}"}"
              s="${s%"${s##*[![:space:]]}"}"
              [[ -n "$s" ]] && skins+=("$s")
            done
            echo "    ✓ Found ${#skins[@]} skin(s) from target_skins input"

          else
            echo "→ No rebuild flags set. Finding latest git tag..."
            latest_tag=$(git tag --sort=-creatordate | head -n 1 || true)

            if [[ -n "$latest_tag" ]]; then
              echo "→ Latest tag found: $latest_tag"
              echo "→ Finding added/modified skins since $latest_tag…"

              mapfile -t skins < <(
                git diff --name-only -z --diff-filter=AM "$latest_tag" HEAD \
                | while IFS= read -r -d '' file; do
                    [[ $file == Skins/* ]] && echo "${file#Skins/}" | cut -d/ -f1
                  done | sort -u
              )
              echo "    ✓ Found ${#skins[@]} added/modified skins"

              echo "→ Finding deleted skins since $latest_tag…"
              mapfile -t deleted_skins < <(
                git diff --name-only -z --diff-filter=D "$latest_tag" HEAD \
                | while IFS= read -r -d '' file; do
                    [[ $file == Skins/* ]] && echo "${file#Skins/}" | cut -d/ -f1
                  done | sort -u
              )
              if [ "${#deleted_skins[@]}" -gt 0 ]; then
                for d in "${deleted_skins[@]}"; do
                  echo "→ Skin '$d' was deleted"
                done
              else
                echo "    ✓ No skins deleted"
              fi

            else
              echo "→ No tag found. Falling back to ALL_SKINS_DIR for full list…"
              skins=("${all_skins[@]}")
              echo "    ✓ Found ${#skins[@]} skin directories (from ALL_SKINS_DIR)"
            fi
          fi

          echo ""
          echo "[Cleaning Skin Names]"
          uniq_skins=()
          for skin in "${skins[@]}"; do
            skin="${skin#"${skin%%[![:space:]]*}"}"
            skin="${skin%"${skin##*[![:space:]]}"}"
            [[ -n "$skin" ]] && uniq_skins+=("$skin")
          done
          echo "    ✓ ${#uniq_skins[@]} valid skin names after cleaning"

          echo ""
          if [ "${#uniq_skins[@]}" -eq 0 ]; then
            echo "→ No added/modified skins detected."
            echo "CHANGED_SKINS_FILE=" >> "$GITHUB_ENV"
          else
            echo "[Writing Changed Skins to File]"
            changed_skins_file=$(mktemp)
            printf "%s\n" "${uniq_skins[@]}" > "$changed_skins_file"
            echo "    ✓ Skins written to $changed_skins_file"
            echo "CHANGED_SKINS_FILE=$changed_skins_file" >> "$GITHUB_ENV"
          fi

          echo ""
          echo "[Detect Changed Skin Directories Complete — ${#uniq_skins[@]} skins processed, ${#deleted_skins[@]} skins deleted]"

      - name: Pull Git LFS objects for changed skins (and core assets)
        shell: bash
        run: |
          if [ -z "${CHANGED_SKINS_FILE:-}" ] || [ ! -s "$CHANGED_SKINS_FILE" ]; then
            echo "No skins changed. Skipping git pull lfs."
            exit 0
          fi

          includes="src/**,export/**,media/**"

          skin_includes=$(
            while IFS= read -r skin; do
              esc=$(printf '%s' "$skin" \
                | sed -e 's/\[/\\[/g' -e 's/\]/\\]/g')
              printf 'Skins/%s/**\n' "$esc"
            done < "$CHANGED_SKINS_FILE" \
            | paste -sd ','
          )

          includes="$includes,$skin_includes"

          echo "→ Pulling LFS objects for patterns: $includes"
          git lfs pull --include="$includes"

      - name: Extract Repository path
        shell: bash
        run: |
          echo "Extracting repository path..."
          USER_REPOSITORY="${{ github.workspace }}"
          USER_REPOSITORY="${USER_REPOSITORY#/workspace/}"
          USER_REPOSITORY="${USER_REPOSITORY%/}"
          echo "Repository path extracted: $USER_REPOSITORY"
          echo "USER_REPOSITORY=$USER_REPOSITORY" >> $GITHUB_ENV

      - name: Set XDG_RUNTIME_DIR
        shell: bash
        run: |
          echo "Setting XDG_RUNTIME_DIR..."
          mkdir -p /tmp/xdg_runtime_dir
          chmod 0700 /tmp/xdg_runtime_dir
          echo "XDG_RUNTIME_DIR=/tmp/xdg_runtime_dir" >> "$GITHUB_ENV"
          echo "XDG_RUNTIME_DIR set."

      - name: Create directories for assets
        shell: bash
        run: |
          echo "Creating base directories for assets..."
          mkdir -p "$REPO_SCREENSHOT_DIR" "$REPO_MOD_ICONS_DIR" "$REPO_RANKING_PANEL_DIR" "$OSK_PATH" "$REPO_THUMBNAIL_DIR"

          readarray -t skins <<< "$ALL_SKINS_DIR"

          for skin in "${skins[@]}"; do
            echo " → Creating subdirs for '$skin'…"
            mkdir -p \
              "$REPO_SCREENSHOT_DIR/$skin" \
              "$REPO_MOD_ICONS_DIR/$skin" \
              "$REPO_RANKING_PANEL_DIR/$skin" \
              "$OSK_PATH/$skin" \
              "$REPO_THUMBNAIL_DIR/$skin"
          done

          echo "All asset directories created for ${#skins[@]} skins."

      - name: Create New Tag
        shell: bash
        run: |
          echo "Computing new tag..."
          latest_tag=$(git describe --tags $(git rev-list --tags --max-count=1) 2>/dev/null || echo "")
          if [ -z "$latest_tag" ]; then
            new_tag="v1.0.0"
          else
            IFS='.' read -r major minor patch <<< "${latest_tag#v}"
            minor=$((minor + 1))
            patch=0
            new_tag="v${major}.${minor}.${patch}"
          fi
          echo "new_tag=$new_tag" >> $GITHUB_ENV
          echo "Computed new tag: $new_tag"

      - name: Move Skin files to Danser Skins directory
        shell: bash
        run: |
          echo "Moving Skin files to Danser Skins directory..."
          mkdir -p "$DANSER_SKINS_DIR"
          mv "$SKINS_DIR"/* "$DANSER_SKINS_DIR"
          echo "Skin files moved."

      - name: Generate Danser videos and screenshots
        shell: bash
        run: |
          echo "[Danser Job Started]"

          if [ -z "${CHANGED_SKINS_FILE:-}" ] || [ ! -s "$CHANGED_SKINS_FILE" ]; then
            echo "No skins changed. Skipping generation."
            exit 0
          fi

          mapfile -t skins < "$CHANGED_SKINS_FILE"
          [ "${#skins[@]}" -eq 0 ] && { echo "No skins to process. Exiting."; exit 0; }

          SKIN_COUNT=${#skins[@]}
          INDEX=1

          for skin_path in "${skins[@]}"; do
            [ -z "$skin_path" ] && continue
            SKIN_DIR="$DANSER_SKINS_DIR/$skin_path"
            [ ! -d "$SKIN_DIR" ] && { echo "Skipping missing skin: $skin_path"; continue; }

            SKIN_NAME="$skin_path"
            OUT_VIDEO_DIR="$REPO_SCREENSHOT_DIR/$SKIN_NAME"
            OUT_PNG_DIR="$REPO_RANKING_PANEL_DIR/$SKIN_NAME"
            OUT_THUMBNAIL_DIR="$REPO_THUMBNAIL_DIR/$SKIN_NAME"

            echo ""
            echo "[$INDEX/$SKIN_COUNT] Generating for skin: $SKIN_NAME"

            LOGFILE="/tmp/danser_log_$INDEX.txt"

            echo "    → Generating video..."
            if ! xvfb-run -a "$DANSER_DIR/danser-cli" \
              -replay "$GAMEPLAY_REPLAY_PATH" -record -skip -start=300 -end=307 -noupdatecheck \
              -out="$SKIN_NAME" -skin="$SKIN_NAME" -settings="skinhub" >"$LOGFILE" 2>&1; then
              echo "    ✖ Video failed for $SKIN_NAME"; cat "$LOGFILE"; INDEX=$((INDEX+1)); continue
            fi

            if [ -f "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4" ]; then
              echo "    → Trimming MP4 with ffmpeg..."
              ffmpeg -hide_banner -loglevel error \
                -ss 5 -t 6.5 \
                -i "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4" \
                -c:v h264_nvenc -preset fast \
                -c:a aac -b:a 128k \
                "$DANSER_VIDEO_DIR/${SKIN_NAME}_trimmed.mp4"

              if [ -f "$DANSER_VIDEO_DIR/${SKIN_NAME}_trimmed.mp4" ]; then
                mv "$DANSER_VIDEO_DIR/${SKIN_NAME}_trimmed.mp4" "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4"
                mkdir -p "$OUT_VIDEO_DIR"
                mv "$DANSER_VIDEO_DIR/$SKIN_NAME.mp4" "$OUT_VIDEO_DIR/$SKIN_NAME.mp4"
                echo "    ✓ Trimmed MP4 moved to $OUT_VIDEO_DIR/"
              else
                echo "    ✖ ffmpeg trimming failed for $SKIN_NAME"
              fi
            else
              echo "    ✖ No MP4 found for $SKIN_NAME"
            fi

            echo "    → Taking screenshot..."
            if ! xvfb-run -a "$DANSER_DIR/danser-cli" \
              -replay "$PANEL_REPLAY_PATH" -skip -settings="skinhub" -noupdatecheck -ss 28 \
              -out="$SKIN_NAME" -skin="$SKIN_NAME" >>"$LOGFILE" 2>&1; then
              echo "    ✖ Screenshot failed for $SKIN_NAME"; cat "$LOGFILE"; INDEX=$((INDEX+1)); continue
            fi

            if [ -f "$DANSER_SCREENSHOT_DIR/$SKIN_NAME.png" ]; then
              mkdir -p "$OUT_PNG_DIR"
              mv "$DANSER_SCREENSHOT_DIR/$SKIN_NAME.png" "$OUT_PNG_DIR/$SKIN_NAME.png"
              echo "    ✓ PNG moved to $OUT_PNG_DIR/"
            else
              echo "    ✖ No PNG found for $SKIN_NAME"
            fi

            echo "    → Taking thumbnail screenshot..."
            if ! xvfb-run -a "$DANSER_DIR/danser-cli" \
              -replay "$THUMBNAIL_REPLAY_PATH" -skip -settings="skinhub" -noupdatecheck -ss 1.3 \
              -out="${SKIN_NAME}_thumb" -skin="$SKIN_NAME" >>"$LOGFILE" 2>&1; then
              echo "    ✖ Thumbnail screenshot failed for $SKIN_NAME"; cat "$LOGFILE"; INDEX=$((INDEX+1)); continue
            fi

            if [ -f "$DANSER_SCREENSHOT_DIR/${SKIN_NAME}_thumb.png" ]; then
              mkdir -p "$OUT_THUMBNAIL_DIR"
              mv "$DANSER_SCREENSHOT_DIR/${SKIN_NAME}_thumb.png" "$OUT_THUMBNAIL_DIR/$SKIN_NAME.png"
              echo "    ✓ Thumbnail PNG moved to $OUT_THUMBNAIL_DIR/"
            else
              echo "    ✖ No thumbnail PNG found for $SKIN_NAME"
            fi

            INDEX=$((INDEX + 1))
          done

          echo ""
          echo "[Danser Job Finished — processed $SKIN_COUNT skins]"

      - name: Rename Generated Assets Based on skin.ini
        shell: bash
        run: |
          echo "[Asset Renaming Job Started]"

          if [ -z "${CHANGED_SKINS_FILE:-}" ] || [ ! -s "$CHANGED_SKINS_FILE" ]; then
            echo "No skins changed. Skipping asset renaming."
            exit 0
          fi

          mapfile -t skins < "$CHANGED_SKINS_FILE"
          [ "${#skins[@]}" -eq 0 ] && { echo "No skins to rename. Exiting."; exit 0; }

          SKIN_COUNT=${#skins[@]}
          INDEX=1

          sanitize_filename() {
            echo "$1" | \
              tr -d '\000-\037' | \
              sed -e 's#[\\/:\*\?"<>|]#-#g' | \
              sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
          }

          for skin_path in "${skins[@]}"; do
            [ -z "$skin_path" ] && continue
            SKIN_DIR_NAME="$skin_path"
            SKIN_DIR="$DANSER_SKINS_DIR/$skin_path"
            if [ ! -d "$SKIN_DIR" ]; then
              echo "Skipping missing skin directory: $SKIN_DIR"
              continue
            fi

            echo "Processing skin $INDEX/$SKIN_COUNT: $SKIN_DIR_NAME"

            skin_header="$SKIN_DIR_NAME"
            ini_file=$(find "$SKIN_DIR" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
            if [ -f "$ini_file" ]; then
              name_line=$(grep -i '^[[:space:]]*Name:' "$ini_file" | head -n1 || true)
              if [ -n "$name_line" ]; then
                val="${name_line#*:}"
                val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
                if [ -n "$val" ]; then
                  sanitized="$(sanitize_filename "$val")"
                  [ -n "$sanitized" ] && skin_header="$sanitized"
                fi
              fi
            fi

            VIDEO_DIR="$REPO_SCREENSHOT_DIR/$SKIN_DIR_NAME"
            PNG_DIR="$REPO_RANKING_PANEL_DIR/$SKIN_DIR_NAME"
            THUMBNAIL_DIR="$REPO_THUMBNAIL_DIR/$SKIN_DIR_NAME"

            if [ -f "$VIDEO_DIR/$SKIN_DIR_NAME.mp4" ] && [ "$SKIN_DIR_NAME" != "$skin_header" ]; then
              mv -f "$VIDEO_DIR/$SKIN_DIR_NAME.mp4" \
                    "$VIDEO_DIR/$skin_header.mp4" || true
              echo "    ✓ Renamed MP4 to $VIDEO_DIR/$skin_header.mp4"
            fi

            if [ -f "$PNG_DIR/$SKIN_DIR_NAME.png" ] && [ "$SKIN_DIR_NAME" != "$skin_header" ]; then
              mv -f "$PNG_DIR/$SKIN_DIR_NAME.png" \
                    "$PNG_DIR/$skin_header.png" || true
              echo "    ✓ Renamed PNG to $PNG_DIR/$skin_header.png"
            fi

            if [ -f "$THUMBNAIL_DIR/$SKIN_DIR_NAME.png" ] && [ "$SKIN_DIR_NAME" != "$skin_header" ]; then
              mv -f "$THUMBNAIL_DIR/$SKIN_DIR_NAME.png" \
                    "$THUMBNAIL_DIR/$skin_header.png" || true
              echo "    ✓ Renamed thumbnail to $THUMBNAIL_DIR/$skin_header.png"
            fi

            INDEX=$((INDEX + 1))
          done

          echo ""
          echo "[Asset Renaming Complete — processed $SKIN_COUNT skins]"

      - name: Generate Mod Icons (WEBP)
        shell: bash
        run: |
          echo "[Mod Icon Generation Job Started]"

          if [ -z "${CHANGED_SKINS_FILE:-}" ] || [ ! -s "$CHANGED_SKINS_FILE" ]; then
            echo "No skins changed. Skipping mod icon generation."
            exit 0
          fi

          mapfile -t skin_dirs < "$CHANGED_SKINS_FILE"
          [ "${#skin_dirs[@]}" -eq 0 ] && { echo "No skins to process. Exiting."; exit 0; }

          sanitize_filename() {
            echo "$1" | \
              tr -d '\000-\037' | \
              sed -e 's#[\\/:\*\?"<>|]#-#g' | \
              sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
          }

          ICONS_JSON_FILE="${{ github.workspace }}/.gitea/workflows/icons.json"
          group1_icons=$(jq -r '.group1 | join(" ")' "$ICONS_JSON_FILE")
          group2_icons=$(jq -r '.group2 | join(" ")' "$ICONS_JSON_FILE")
          group3_icons=$(jq -r '.group3 | join(" ")' "$ICONS_JSON_FILE")

          BLANK_IMAGE="blank.png"
          magick -size "160x160" xc:none "$BLANK_IMAGE"

          SKIN_COUNT=${#skin_dirs[@]}
          INDEX=1

          for skin_path in "${skin_dirs[@]}"; do
            SKIN_DIR="$DANSER_SKINS_DIR/$skin_path"
            [ ! -d "$SKIN_DIR" ] && { echo "Skipping missing skin directory: $SKIN_DIR"; ((INDEX++)); continue; }

            skin_header="$skin_path"
            ini_file=$(find "$SKIN_DIR" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
            if [ -f "$ini_file" ]; then
              name_line=$(grep -i '^[[:space:]]*Name:' "$ini_file" | head -n1 || true)
              if [ -n "$name_line" ]; then
                val="${name_line#*:}"
                val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
                if [ -n "$val" ]; then
                  sanitized="$(sanitize_filename "$val")"
                  [ -n "$sanitized" ] && skin_header="$sanitized"
                fi
              fi
            fi

            echo ""
            echo "[$INDEX/$SKIN_COUNT] Skin: $skin_header"

            ICON_FOLDER="$SKIN_DIR"
            OUTPUT_DIR="$REPO_MOD_ICONS_DIR/$skin_path"
            mkdir -p "$OUTPUT_DIR"
            OUTPUT="$OUTPUT_DIR/${skin_header}-mod-icons.webp"

            row_images=()
            row_index=1

            for group_list in "$group1_icons" "$group2_icons" "$group3_icons"; do
              montage_files=()
              for icon in $group_list; do
                file=""
                if [ -f "${ICON_FOLDER}/selection-mod-${icon}@2x.png" ]; then
                  file="${ICON_FOLDER}/selection-mod-${icon}@2x.png"
                elif [ -f "${ICON_FOLDER}/selection-mod-${icon}.png" ]; then
                  file="${ICON_FOLDER}/selection-mod-${icon}.png"
                elif [ -f "${DEFAULT_SKIN_DIR}/selection-mod-${icon}@2x.png" ]; then
                  file="${DEFAULT_SKIN_DIR}/selection-mod-${icon}@2x.png"
                fi

                [ -n "$file" ] && montage_files+=("$file")
              done

              while [ "${#montage_files[@]}" -lt 7 ]; do
                montage_files+=("$BLANK_IMAGE")
              done

              magick montage "${montage_files[@]}" \
                -tile "7x1" -geometry "160x160+10+10" -background none \
                "row_${row_index}.png"
              row_images+=("row_${row_index}.png")
              row_index=$((row_index + 1))
            done

            magick montage "${row_images[@]}" \
              -tile "1x${#row_images[@]}" -geometry "+10+10" -background none \
              "temp_combined.png"

            magick "temp_combined.png" -define webp:lossless=true "$OUTPUT"
            rm temp_combined.png row_*.png

            echo "    ✓ Mod Icons Generated at $OUTPUT"
            INDEX=$((INDEX + 1))
          done

          rm "$BLANK_IMAGE"

          echo ""
          echo "[Mod Icon Generation Finished — processed $SKIN_COUNT skins]"

      - name: Convert PNGs to WEBPs
        shell: bash
        run: |
          echo "[Convert PNG → WEBP Started]"

          if [ -z "${CHANGED_SKINS_FILE:-}" ] || [ ! -s "$CHANGED_SKINS_FILE" ]; then
            echo "No skins changed. Skipping conversion."
            exit 0
          fi

          mapfile -t skins < "$CHANGED_SKINS_FILE"
          [ "${#skins[@]}" -eq 0 ] && { echo "No skins to process. Exiting."; exit 0; }

          convert_pngs_to_webp() {
            local base_dir="$1"
            local skin_path="$2"
            local dir="$base_dir/$skin_path"
            echo " → Processing: $dir"
            [ ! -d "$dir" ] && { echo "    ✖ Directory does not exist: $dir"; return; }
            find "$dir" -type f -iname "*.png" | while read -r png; do
              webp="${png%.png}.webp"
              echo "    ↳ Converting: $png → $webp"
              magick "$png" -define webp:lossless=false -quality 90 "$webp" && rm -f "$png"
            done
          }

          for skin_path in "${skins[@]}"; do
            [ -z "$skin_path" ] && continue
            convert_pngs_to_webp "$REPO_RANKING_PANEL_DIR" "$skin_path"
            convert_pngs_to_webp "$REPO_THUMBNAIL_DIR" "$skin_path"
          done

          echo "[Convert PNG → WEBP Finished]"

      - name: Create OSK Files
        shell: bash
        run: |
          echo "[OSK Creation Job Started]"

          if [ -z "${CHANGED_SKINS_FILE:-}" ] || [ ! -s "$CHANGED_SKINS_FILE" ]; then
            echo "No skins changed. Skipping OSK creation."
            exit 0
          fi

          mapfile -t skin_dirs < "$CHANGED_SKINS_FILE"
          [ "${#skin_dirs[@]}" -eq 0 ] && { echo "No skins to process. Exiting."; exit 0; }

          sanitize_filename() {
            echo "$1" | \
              tr -d '\000-\037' | \
              sed -e 's#[\\/:\*\?"<>|]#-#g' | \
              sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
          }

          FIXED_TIMESTAMP="2025-01-01 00:00:00"
          SKIN_COUNT=${#skin_dirs[@]}
          INDEX=1

          for skin_path in "${skin_dirs[@]}"; do
            SKIN_DIR="$DANSER_SKINS_DIR/$skin_path"
            [ ! -d "$SKIN_DIR" ] && { echo "Skipping missing skin directory: $SKIN_DIR"; ((INDEX++)); continue; }

            OUTPUT_DIR="$OSK_PATH/$skin_path"
            mkdir -p "$OUTPUT_DIR"

            skin_header="$skin_path"
            ini_file=$(find "$SKIN_DIR" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
            if [ -f "$ini_file" ]; then
              name_line=$(grep -i '^[[:space:]]*name:' "$ini_file" | head -n1 || true)
              if [ -n "$name_line" ]; then
                val="${name_line#*:}"
                val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
                if [ -n "$val" ]; then
                  sanitized="$(sanitize_filename "$val")"
                  [ -n "$sanitized" ] && skin_header="$sanitized"
                fi
              fi
            fi

            echo ""
            echo "[$INDEX/$SKIN_COUNT] Processing skin: $skin_header"

            (cd "$SKIN_DIR" && find . -type f -exec touch -d "$FIXED_TIMESTAMP" {} +)

            (cd "$SKIN_DIR" && find . -type f | sort | \
              zip -rq -D -X -9 --compression-method deflate \
                "$OUTPUT_DIR/${skin_header}.osk" -@)

            echo "    ✓ OSK file created at $OUTPUT_DIR/${skin_header}.osk"
            INDEX=$((INDEX + 1))
          done

          echo ""
          echo "[OSK Creation Job Finished — processed $SKIN_COUNT skins]"

      - name: Generate README
        shell: bash
        run: |
          echo "Generating README index…"

          sanitize_filename() {
            echo "$1" | \
              tr -d '\000-\037' | \
              sed -e 's#[\\/:\*\?"<>|]#-#g' -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
          }

          url_encode_path() {
            local IFS='/'
            local parts=($1)
            local encoded=""
            for part in "${parts[@]}"; do
              [ -n "$encoded" ] && encoded+="/"
              encoded+=$(printf '%s' "$part" | jq -sRr @uri)
            done
            echo "$encoded"
          }

          SKINS_JSON_FILE="${{ github.workspace }}/.gitea/workflows/skins.json"
          DESC_FILE=$(mktemp)

          echo "---" > "$README_PATH"
          echo "gitea: none" >> "$README_PATH"
          echo "include_toc: true" >> "$README_PATH"
          echo "---" >> "$README_PATH"
          echo "" >> "$README_PATH"
          echo "# Skins" >> "$README_PATH"
          echo "" >> "$README_PATH"
          echo "<!--" >> "$README_PATH"
          echo "osuid: $OSU_ID" >> "$README_PATH"
          echo "-->" >> "$README_PATH"
          echo "" >> "$README_PATH"
          echo "**Go back to [osc/skins]($REGISTRY_URL/osc/skins)**" >> "$README_PATH"
          echo "" >> "$README_PATH"
          echo "**Click on the Skin name to download it, or click on the thumbnail to see more about the skin, including a video preview, screenshots, and mod icons.**" >> "$README_PATH"
          echo "" >> "$README_PATH"

          jq -r '.descriptions | to_entries[] | "\(.key)=\(.value)"' "$SKINS_JSON_FILE" > "$DESC_FILE"
          jq -r '.order[]?' "$SKINS_JSON_FILE" > order.txt

          get_desc() {
            grep -F -m1 -- "$1=" "$DESC_FILE" 2>/dev/null | cut -d '=' -f2- || true
          }

          declare -A ordered
          while IFS= read -r skin; do
            [ "$skin" = "default-skin" ] && continue
            ordered["$skin"]=1
            dir="$DANSER_SKINS_DIR/$skin"
            [ ! -d "$dir" ] && continue

            ini_file=$(find "$dir" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
            skin_header="$skin"

            if [ -f "$ini_file" ]; then
              name_line=$(grep -a -i -m1 'Name[[:space:]]*:' "$ini_file" || true)
              if [ -n "$name_line" ]; then
                val="${name_line#*:}"
                val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
                [ -n "$val" ] && skin_header=$(sanitize_filename "$val")
              else
                skin_header=$(sanitize_filename "$skin")
              fi
            else
              continue
            fi

            raw_path="$(printf "%s/%s" "$skin" "$skin_header" | sed 's/^ *//;s/ *$//')"
            base_path=$(url_encode_path "$raw_path")

            echo "## [$skin_header]($REGISTRY_URL/$USER_REPOSITORY/media/tag/$new_tag/export/${base_path}.osk)" >> "$README_PATH"
            echo "" >> "$README_PATH"

            desc=$(get_desc "$skin")
            [ -n "$desc" ] && { echo "$desc" >> "$README_PATH"; echo "" >> "$README_PATH"; }

            if [ -f "$ini_file" ]; then
              author_line=$(grep -i '^[[:space:]]*Author:' "$ini_file" | head -n1 || true)
              if [ -n "$author_line" ]; then
                author=$(echo "$author_line" | cut -d ':' -f2- | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
                [ -n "$author" ] && { echo "**Author:** $author" >> "$README_PATH"; echo "" >> "$README_PATH"; }
              fi
            fi

            echo "[![$skin_header Thumbnail](media/thumbnail/${base_path}.webp)](/docs/${base_path}.md)" >> "$README_PATH"
            echo "" >> "$README_PATH"
          done < order.txt

          for dir in "$DANSER_SKINS_DIR"/*; do
            [ -d "$dir" ] || continue
            skin="$(basename "$dir")"
            [ "$skin" = "default-skin" ] && continue
            [[ -n "${ordered[$skin]}" ]] && continue

            ini_file=$(find "$dir" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
            skin_header="$skin"

            if [ -f "$ini_file" ]; then
              name_line=$(grep -a -i -m1 'Name[[:space:]]*:' "$ini_file" || true)
              if [ -n "$name_line" ]; then
                val="${name_line#*:}"
                val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
                [ -n "$val" ] && skin_header=$(sanitize_filename "$val")
              else
                skin_header=$(sanitize_filename "$skin")
              fi
            else
              continue
            fi

            raw_path="$(printf "%s/%s" "$skin" "$skin_header" | sed 's/^ *//;s/ *$//')"
            base_path=$(url_encode_path "$raw_path")

            echo "## [$skin_header]($REGISTRY_URL/$USER_REPOSITORY/media/tag/$new_tag/export/${base_path}.osk)" >> "$README_PATH"
            echo "" >> "$README_PATH"

            if [ -f "$ini_file" ]; then
              author_line=$(grep -i '^[[:space:]]*Author:' "$ini_file" | head -n1 || true)
              if [ -n "$author_line" ]; then
                author=$(echo "$author_line" | cut -d ':' -f2- | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
                [ -n "$author" ] && { echo "**Author:** $author" >> "$README_PATH"; echo "" >> "$README_PATH"; }
              fi
            fi

            echo "[![$skin_header Thumbnail](media/thumbnail/${base_path}.webp)](/docs/${base_path}.md)" >> "$README_PATH"
            echo "" >> "$README_PATH"
          done

          echo "# Build History" >> "$README_PATH"
          echo "" >> "$README_PATH"
          echo "| Version | Date |" >> "$README_PATH"
          echo "| ------- | ---- |" >> "$README_PATH"

          current_commit_date=$(TZ="Europe/Zurich" date -d "$(git log -1 --format=%cI)" "+%d.%m.%Y %H:%M:%S")
          echo "| [\`$new_tag (Current)\`]($REGISTRY_URL/$USER_REPOSITORY/src/tag/$new_tag/README.md) | $current_commit_date |" >> "$README_PATH"

          old_tags=$(git tag --sort=-v:refname | grep -v "^$new_tag$" | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' || true)
          if [ -n "$old_tags" ]; then
            echo "$old_tags" | while read -r tag; do
              tag_date=$(git log -1 --format=%ci "$tag")
              formatted_date=$(TZ="Europe/Zurich" date -d "$tag_date" "+%d.%m.%Y %H:%M:%S")
              echo "| [\`$tag\`]($REGISTRY_URL/$USER_REPOSITORY/src/tag/$tag/README.md) | $formatted_date |" >> "$README_PATH"
            done
          fi

          echo "README index generated successfully."

      - name: Generate Per-Skin Pages
        shell: bash
        run: |
          echo "Generating detailed per-skin markdown pages…"

          sanitize_filename() {
            echo "$1" | \
              tr -d '\000-\037' | \
              sed -e 's#[\\/:\*\?"<>|]#-#g' | \
              sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
          }

          url_encode_path() {
            local IFS='/'
            local parts=($1)
            local encoded=""
            for part in "${parts[@]}"; do
              [ -n "$encoded" ] && encoded+="/"
              encoded+=$(printf '%s' "$part" | jq -sRr @uri)
            done
            echo "$encoded"
          }

          mkdir -p "$DOC_DIR"

          for dir in "$DANSER_SKINS_DIR"/*; do
            [ -d "$dir" ] || continue

            skin=$(basename "$dir")
            [ "$skin" = "default-skin" ] && continue
            ini_file=$(find "$dir" -maxdepth 1 -iname "skin.ini" | head -n1 || true)
            skin_header="$skin"

            if [ -f "$ini_file" ]; then
              line=$(grep -i '^[[:space:]]*Name:' "$ini_file" | head -n1 || true)
              if [ -n "$line" ]; then
                val="${line#*:}"
                val="$(echo "$val" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
                if [ -n "$val" ]; then
                  skin_header=$(sanitize_filename "$val")
                fi
              fi
            fi

            raw_path="${skin}/${skin_header}"
            base_path=$(url_encode_path "$raw_path")
            osk_url="$REGISTRY_URL/$USER_REPOSITORY/media/tag/$new_tag/export/${base_path}.osk"
            md_file_path="${DOC_DIR}/${raw_path}.md"

            mkdir -p "$(dirname "$md_file_path")"

            video_url="$REGISTRY_URL/$USER_REPOSITORY/media/tag/$new_tag/media/gameplay/${base_path}.mp4"

            author=""
            if [ -f "$ini_file" ]; then
              author_line=$(grep -i '^[[:space:]]*Author:' "$ini_file" | head -n1 || true)
              if [ -n "$author_line" ]; then
                author=$(echo "$author_line" | cut -d ':' -f2- | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')
              fi
            fi

            {
              echo "# [$skin_header]($osk_url)"
              echo ""
              [ -n "$author" ] && echo "**Author:** $author"
              [ -n "$author" ] && echo ""

              echo "## Hitsounds"
              echo "<video controls autoplay loop muted playsinline src=\"$video_url\" type=\"video/mp4\">"
              echo "</video>"
              echo ""

              echo "## Ranking Panel"
              echo "![](/media/panel/${base_path}.webp)"
              echo ""

              echo "## Mod Icons"
              echo "![](/media/icons/${base_path}-mod-icons.webp)"

              echo ""
              echo "## Build History"
              echo ""
              echo "| Version | Date |" 
              echo "| ------- | ---- |"

              current_commit_date=$(TZ="Europe/Zurich" date -d "$(git log -1 --format=%cI)" "+%d.%m.%Y %H:%M:%S")
              echo "| [\`$new_tag (Current)\`]($REGISTRY_URL/$USER_REPOSITORY/src/tag/$new_tag/docs/${base_path}.md) | $current_commit_date |"

              old_tags=$(git tag --sort=-v:refname | grep -v "^$new_tag$" | grep -E '^v[0-9]+\.[0-9]+\.[0-9]+$' || true)
              if [ -n "$old_tags" ]; then
                echo "$old_tags" | while read -r tag; do
                  raw_osk_path="export/${skin}/${skin_header}.osk"
                  if git ls-tree -r --name-only "$tag" | grep -Fx -- "$raw_osk_path" >/dev/null; then
                    tag_date=$(git log -1 --format=%ci "$tag")
                    formatted_date=$(TZ="Europe/Zurich" date -d "$tag_date" "+%d.%m.%Y %H:%M:%S")
                    echo "| [\`$tag\`]($REGISTRY_URL/$USER_REPOSITORY/src/tag/$tag/docs/${base_path}.md) | $formatted_date |"
                  fi
                done
              fi

            } > "$md_file_path"

            echo " → Wrote $md_file_path"
          done

          echo "Per-skin markdown pages complete."

      - name: Cleanup Extra Files
        shell: bash
        run: |
          set -euo pipefail
          echo "[Cleanup Extra Files Started]"

          [ -f how-to-use.md ] && rm -f how-to-use.md
          [ -f src/replay.osr ] && rm -f src/replay.osr
          [ -d src/default-skin ] && rm -rf src/default-skin

          readarray -t skins <<< "$ALL_SKINS_DIR"

          sanitize_filename() {
            echo "$1" | \
              tr -d '\000-\037' | \
              sed -e 's#[\\/:\*\?"<>|]#-#g' | \
              sed -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//'
          }

          prune_dir() {
            local root="$1"
            local skin="$2"
            local expected="$3"

            for f in "$root"/*; do
              [ -f "$f" ] || continue
              name="$(basename "$f")"
              if printf '%s\n' "${skins[@]}" | grep -Fxq -- "$name"; then
                continue
              fi
              echo " → Removing unexpected root file: $f"
              rm -f "$f"
            done

            dir="$root/$skin"
            [ -d "$dir" ] || return
            for f in "$dir"/*; do
              [ -e "$f" ] || continue
              if [[ "$(basename "$f")" != "$expected" ]]; then
                echo " → Removing unexpected file: $f"
                rm -f "$f"
              fi
            done
          }

          for root in "$REPO_SCREENSHOT_DIR" "$REPO_RANKING_PANEL_DIR" "$REPO_MOD_ICONS_DIR" "$REPO_THUMBNAIL_DIR" "$OSK_PATH" "$DOC_DIR"; do
            [ -d "$root" ] || continue
            for dir in "$root"/*; do
              [ -d "$dir" ] || continue
              name="$(basename "$dir")"
              if ! printf '%s\n' "${skins[@]}" | grep -Fxq -- "$name"; then
                echo " → Skin '$name' deleted—removing directory $dir"
                rm -rf "$dir"
              fi
            done
          done

          for skin in "${skins[@]}"; do
            header=$(sanitize_filename "$skin")
            ini=$(find "$DANSER_SKINS_DIR/$skin" -maxdepth 1 -type f -iname "skin.ini" -print -quit || true)
            if [[ -f "$ini" ]]; then
              raw=$(grep -i '^[[:space:]]*Name:' "$ini" | head -n1 || true)
              raw="${raw#*:}"
              raw="$(echo "$raw" | sed 's/^[[:space:]]*//;s/[[:space:]]*$//')"
              tmp_header=$(sanitize_filename "$raw")
              [[ -n "$tmp_header" ]] && header="$tmp_header"
            fi

            prune_dir "$REPO_SCREENSHOT_DIR"     "$skin" "$header.mp4"
            prune_dir "$REPO_RANKING_PANEL_DIR" "$skin" "$header.webp"
            prune_dir "$REPO_MOD_ICONS_DIR"     "$skin" "$header-mod-icons.webp"
            prune_dir "$REPO_THUMBNAIL_DIR"     "$skin" "$header.webp"
            prune_dir "$OSK_PATH"               "$skin" "$header.osk"
            prune_dir "$DOC_DIR"                "$skin" "$header.md"
          done

          echo "[Cleanup Extra Files Complete]"

      - name: Configure Git
        shell: bash
        run: |
          git config user.email "arlind@sulej.ch"
          git config user.name "ci-bot"

      - name: Add and Commit changes
        shell: bash
        run: |
          git config advice.addIgnoredFile false

          for p in docs/ media/gameplay media/thumbnail media/panel media/icons export README.md how-to-use.md src; do
            if [ -e "$p" ]; then
              git add -A "$p"
            fi
          done

          git commit -m "[ci skip] push back from pipeline" -q || echo "No changes to commit"

      - name: Push changes and create tag
        shell: bash
        run: |
          if [ "${GITHUB_REF}" = "refs/heads/main" ]; then
            git push origin HEAD:main || echo "No changes to push"
            git tag "$new_tag"
            git push origin "$new_tag"
          else
            git push origin HEAD:"${GITHUB_REF_NAME}" || echo "No changes to push"
          fi
