#!/bin/bash
#
# Von Tim Peters, https://z3h.de/url-shortener
##############################################

HOST=
API_KEY=
APP_NAME="URL Shortener"
FILE_CONFIG=~/.urlshortener

addUrl() {

  local data=
  local result=
  local link=
  local error=
  
  [ -n "$1" ] && data="${data}\"target\": \"$1\""
  [ -n "$2" ] && data="${data},\"customurl\": \"$2\""
  [ -n "$3" ] && data="${data},\"reuse\": $3"
  [ -n "$4" ] && data="${data},\"expire_in\": \"$4\""
  [ -n "$5" ] && data="${data},\"password\": \"$5\""
  [ -n "$6" ] && data="${data},\"description\": \"$6\""

  result="$( \
    curl \
      -s -H "X-API-KEY: $API_KEY" \
      -H "Content-Type: application/json" \
      --data "{$data}" \
      "$HOST/api/v2/links"
    )"

  link="$( echo "$result" | jq .link | tr -d \" )"
  error="$( echo "$result" | jq .error | tr -d \" )"
  
  if [ "$link" != "null" ]; then
    echo -n "$link" | xclip -selection c
    notify-send -t 5000 "$link wurde in die Zwischenablage kopiert"
  elif [ "$error" != "null" ]; then
    notify-send -t 10000 "$error"
  fi

}

addConfig() {

  yad \
    --form \
    --title="URL Shortener" \
    --text="Ersteinrichtung" \
    --field="URL" \
    --field="API-KEY" > "$FILE_CONFIG" || exit

}

getConfig() {

  while true; do
    [ -r "$FILE_CONFIG" ] || addConfig
    HOST="$( cut -d\| -f1 < "$FILE_CONFIG" )"
    API_KEY="$( cut -d\| -f2 < "$FILE_CONFIG" )"
    if [ -z "$HOST" ] && [ -z "$API_KEY" ]; then
      addConfig
    else
      break
    fi
  done
}

getUrlFromClipboard() {

  xclip -o | grep -E "^https*://"

}

getConfig
FORM="$( \
  yad \
    --form \
    --title="$APP_NAME" \
    --text="URL und Einstellmöglichkeiten" \
    --field="URL" \
    --field="Kurzlink" \
    --field="Wiederverwendung:CB" \
    --field="Verfallszeit:CBE" \
    --field="Passwort:H" \
    --field="Beschreibung" \
    "$( getUrlFromClipboard )" \
    "" \
    "true\!false" \
    "\!7d\!30d\!180d\!365d" \
    "" \
    "" \
)"

[ -n "$FORM" ] && \
  addUrl \
    "$( echo "$FORM" | cut -d\| -f1 )" \
    "$( echo "$FORM" | cut -d\| -f2 )" \
    "$( echo "$FORM" | cut -d\| -f3 )" \
    "$( echo "$FORM" | cut -d\| -f4 )" \
    "$( echo "$FORM" | cut -d\| -f5 )" \
    "$( echo "$FORM" | cut -d\| -f6 )"