# From inside the SVN subdir you want to extract:
set -euo pipefail

DEST="${1:-trunk-git}"

echo "Exporting SVN working copy to $DEST (versioned files only)..."
rm -rf -- "$DEST"

# Optionally compute total items upfront for a rough percentage
total_items=""
if total=$(svn list -R . 2>/dev/null | wc -l || true); then
  total_items="$total"
fi

start_ts="$(date +%s.%N)"

# Run export in background so we can emit our own progress based on files created.
svn export --quiet . "$DEST" &
export_pid=$!

last_reported=-1
while kill -0 "$export_pid" 2>/dev/null; do
  if [[ -d "$DEST" ]]; then
    current=$(find "$DEST" -mindepth 1 -print | wc -l)
  else
    current=0
  fi

  # Only log when count changes to reduce noise.
  if [[ "$current" -ne "$last_reported" ]]; then
    now="$(date +%s.%N)"
    elapsed=$(awk -v s="$start_ts" -v n="$now" 'BEGIN{split(s,sa,".");split(n,na,".");printf "%.1f", (na[1]-sa[1]) + (na[2]-sa[2])/1e9}')
    pct=""
    if [[ -n "$total_items" && "$total_items" -gt 0 ]]; then
      pct=$(awk -v c="$current" -v t="$total_items" 'BEGIN{printf(" (%.1f%%)", (c*100)/t)}')
    fi
    printf "[%ss] Exported %d items%s\n" "$elapsed" "$current" "$pct"
    last_reported="$current"
  fi

  sleep 1
done

wait "$export_pid"

final_count=$(find "$DEST" -mindepth 1 -print | wc -l 2>/dev/null || echo 0)
end_now="$(date +%s.%N)"
end_elapsed=$(awk -v s="$start_ts" -v n="$end_now" 'BEGIN{split(s,sa,".");split(n,na,".");printf "%.1f", (na[1]-sa[1]) + (na[2]-sa[2])/1e9}')
printf "[%ss] Exported %d items (done)\n" "$end_elapsed" "$final_count"

cd "$DEST"
git init
git config init.defaultBranch trunk || true
git add -A
git commit -m "Import SVN snapshot" || true