#!/bin/bash

command="fennel main.fnl"
kill_command="pkill -f 'main\.fnl'"

log_file="log"

usage="Usage: start-server [-h] [-l] [--log-file] [-k] 

Options:
  -h, --help   Show this help message and exit
  -l, --log    Log requests in the log file
  --log-file   Set the log file
  -k, --kill   Kill the server and exit

"

for (( i=1; i<=$#; i++ )); do
  if [[ "${!i}" == "-h" || "${!i}" == "--help" ]]; then
    printf "$usage"
    exit 0
  elif [[ "${!i}" == "-l" || "${!i}" == "--log" ]]; then
    command="${command} | tee ${log_file}"
  elif [[ "${!i}" == "--log-file" ]]; then
    ((i++))
    log_file="${!i}"
  elif [[ "${!i}" == "-k" || "${!i}" == "--kill" ]]; then
    eval "$kill_command"
    exit 0
  fi
done

eval "${kill_command}; ${command} & disown"