git.slaskete.net - einar-bin/blob - imgurgame.bash

   1 #!/bin/bash
   2 # Because why not? curl must be installed
   3
   4 readonly BROWSER="google-chrome"
   5
   6 # Create a random imgur url that may or may not be valid
   7 imgururl() {
   8   # 1/3 chance for length of 5, 6 or 7 length string
   9   STRLN=$((5 + RANDOM % 3))
  10   local ID
  11   # don't nag about useless cat, this is more readable
  12   # shellcheck disable=2002
  13   ID=$(cat /dev/urandom | tr -dc 'a-zA-Z0-9' | fold -w ${STRLN} | head -n 1)
  14   echo "http://i.imgur.com/${ID}.jpg"
  15 }
  16
  17 # Test if we found a valid URL
  18 testimgur() {
  19   local URL=${1}
  20   local RESULT
  21   RESULT=$(curl -s -o /dev/null -I -w "%{http_code}" "${URL}")
  22   if [[ ${RESULT} == "200" ]]; then
  23     echo true
  24   else
  25     echo false
  26   fi
  27 }
  28
  29 main() {
  30   local FAIL=0
  31   while true; do
  32     local URL
  33     URL=$(imgururl)
  34     if [[ $(testimgur "${URL}") == "true" ]]; then
  35       echo "Found ${URL} after ${FAIL} failed tries"
  36       ${BROWSER} "${URL}" > /dev/null 2>&1
  37       local FAIL=0
  38     else
  39       ((FAIL++))
  40     fi
  41   done
  42 }
  43
  44 main