View droplr content from the terminal

viewdroplr

#!/bin/bash
# View droplr content from the terminal by extracting the content URL
# from the in-page JSON metadata
#
# Requires jq, feh and mpv

main() {
  local url="$1"
  local json_payload
  local content_url
  local mime_type

  if [[ -z "$url" ]]; then
    printf "URL is required\n"
    return 1
  fi

  if [[ ! ("$url" =~ ^https://d.pr/) ]]; then
    printf "Url must be from d.pr domain\n"
    return 1
  fi

  printf "Retrieving content from %s\n" "$url"

  json_payload="$(curl -sSL "$url" | grep window.PRELOADED_STATE)"
  json_payload="${json_payload#*=}"

  if [[ -n "$json_payload" ]] && jq -e . >/dev/null 2>&1 <<< "$json_payload"; then
    content_url="$(jq -r '.drops.current.content' <<< "$json_payload")"
    if [[ -z "$content_url" ]]; then
      printf "Content not found.\n"
      return 1
    fi
    mime_type="$(curl -sSLI "$content_url" | grep -- content-type)"
    mime_type="${mime_type#*: }"
    printf "URL: %s\nMime-type: %s\n" "$content_url" "$mime_type"
    if [[ "$mime_type" =~ ^video ]]; then
      mpv --loop=inf "$content_url"
    elif [[ "$mime_type" =~ ^image ]]; then
      feh -ZF "$content_url"
    else
      printf "Unsupported mime-type\n"
      return 1
    fi
  else
    printf "Can't find PRELOADED_STATE JSON\n"
    return 1
  fi
}

main "$@"