#!/bin/bash

relay=$1
pubkey=$2
backup_folder="$3/$2"
mkdir -p "$backup_folder"

jsonl_output=$(nak req -a "$pubkey" -k 1 -k 30023 -k 30024 --limit 10000 "$relay")

while IFS= read -r line; do
  image_urls=$(echo "$line" | jq -r '.content | scan("(https?://[^)\\] ]+\\.(?:png|jpg|jpeg|gif))") | .[]?')

  for url in $image_urls; do
    file_name=$(basename "$url")
    local_file="$backup_folder/$file_name"

    if [[ -f "$local_file" ]]; then
      echo "skipping $url, already downloaded."
    else
      curl -L -s -o "$local_file" "$url"
      if [[ $? -eq 0 ]]; then
        echo "downloaded $url"
      else
        echo "failed to download $url"
        exit 1
      fi
    fi
  done <<< "$image_urls"
done <<< "$jsonl_output"

echo "backup for $pubkey completed"