ddgsearch

#!/usr/bin/env bash

declare -r esc=$'\033'
declare -r c_reset="${esc}[0m"
declare -r c_red="${esc}[31m"

err() {
  printf "${c_red}%s${c_reset}\n" "$*" >&2
}

die() {
  [[ -n "$1" ]] && err "$1"
  exit 1
}

has() {
  local verbose=0
  if [[ $1 == '-v' ]]; then
    verbose=1
    shift
  fi
  for c; do c="${c%% *}"
    if ! command -v "$c" &> /dev/null; then
      (( verbose > 0 )) && err "$c not found"
      return 1
    fi
  done
}

select_from() {
  local o c cmd OPTARG OPTIND
  cmd='command -v'
  while getopts 'c:' o; do
    case "$o" in
      c) cmd="$OPTARG" ;;
    esac
  done
  shift "$((OPTIND-1))"
  for c; do
    if $cmd "${c%% *}" &> /dev/null; then
      echo "$c"
      return 0
    fi
  done
  return 1
}

openurl() {
  local url="$1"
  local browser
  case "$url" in
    *youtube.com*|*youtu.be*|*vimeo.com*)
      browser=$(select_from mpv mplayer2 mplayer) ;;
    *)
      browser=$(select_from -c "pgrep -u $USER -i" firefox chromium-browser chrome)
      [[ -z $browser ]] && browser='w3m' ;;
  esac
  $browser "$url"
}

has -v ddgr jq fzf || die

if [[ -z "$*" ]]; then
  die 'nothing to search for'
fi

response=$( ddgr --json --noprompt --expand "$*" ) || die 'error connecting to DuckDuckGo, check connection'
json=$(jq -rc '. | map("\(.url)\t\(.title) - \(.abstract)") | .[]' <<< "$response") || die 'error parsing results :('
url=$(fzf -e --ansi --cycle --inline-info --select-1 --with-nth=2.. <<< "$json" | awk '{print $1}')

if [[ -n $url ]]; then
  openurl "$url"
fi