#!/usr/bin/env bash
# Download DOP20 assets (JP2/J2W/XML) listed line-by-line in raw/dop20/filelist.txt.
set -euo pipefail

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")"/.. && pwd)"
DOP_ROOT="$ROOT/raw/dop20"
LIST="${LIST:-$DOP_ROOT/filelist.txt}"
OUT="$DOP_ROOT/jp2"

if [[ ! -f "$LIST" ]]; then
  echo "Missing filelist: $LIST" >&2
  exit 1
fi

mkdir -p "$OUT"

while IFS= read -r url; do
  [[ -z "$url" || "$url" =~ ^# ]] && continue
  fname="${url##*/}"
  dest="$OUT/$fname"
  if [[ -f "$dest" ]]; then
    echo "Exists: $fname"
    continue
  fi
  echo "Downloading $fname"
  curl -fL "$url" -o "$dest"
done < "$LIST"

echo "Done. Files in $OUT"