#!/bin/bash

# https://github.com/cubny/php-built-in-server-manager/blob/9a5cbeaad50a108d6058b882b83ba23fbd7722a9/server

# default hostname
HOST=localhost
# default port number
PORT=8080
# script name
NAME=${0##*/}

usage () {
  cat <<EOF

  $NAME (PHP built-in web server manager) Version 0.2.0
  PHP builtin server manager on port $PORT

  usage: ./$NAME <command> [<hostname>:<port>]

  Available commands:

  start     Starts PHP built-in web server server on specified hostname:port, default is localhost:$PORT
  stop      Stops the PHP built-in web server
  restart   Stops and Starts on previously specified hostname:port
  status    Status of "$NAME" process
  log       Show the PHP built-in web server logs. Use the -f option for a live update


  report bugs to me@cubny.com
  $NAME homepage: <https://github.com/cubny/php-built-in-server-manager>

EOF
return 0
}

setup_colors() {

if which tput >/dev/null 2>&1; then
      ncolors=$(tput colors)
  fi
  if [ -t 1 ] && [ -n "$ncolors" ] && [ "$ncolors" -ge 8 ]; then
    RED="$(tput setaf 1)"
    GREEN="$(tput setaf 2)"
    YELLOW="$(tput setaf 3)"
    BLUE="$(tput setaf 4)"
    BOLD="$(tput bold)"
    NORMAL="$(tput sgr0)"
  else
    RED=""
    GREEN=""
    YELLOW=""
    BLUE=""
    BOLD=""
    NORMAL=""
  fi
}

# if no command specified exit and show usage
if [[ $# < 1 ]]; then
  echo $NAME: no command specified
  usage
  exit 1
fi

# if hostname:port specified override defaults
if [[ $# > 1 ]]; then
  IFS=':' read -r -a hostport <<< "$2"
  if [[ ! -z "${hostport[0]}" ]]; then
    HOST=${hostport[0]}
  fi
  if [[ ! -z "${hostport[1]}" ]]; then
    PORT=${hostport[1]}
  fi
fi

# pidfile contents would be hostname:port:pid
PIDFILE=.build/server/server.pid
LOGFILE=.build/server/server.log

validate_server () {
  which php &> /dev/null
  if [[ $? -eq 1 ]]; then
    printf "${YELLOW}Error: PHP not found. ${NORMAL}Please install PHP version 5.4 or greater!\n"
    return 1
  fi

  php -h | grep -q -- '-S'
  if [[ $? -eq 1 ]]; then
    printf "${YELLOW}Error: PHP version must be 5.4 or greater!${NORMAL}\n"
    return 1
  fi

  return 0
}

start_server () {
  validate_server

  if [[ $? -eq 1 ]]; then
    return 1
  fi

  if [[ -e "$PIDFILE" ]]; then
    printf "${YELLOW}Server seems to be running!${NORMAL}\n"
    echo
    echo if not, there is probably a zombie "$PIDFILE" in this directory.
    echo if you are sure no server is running just remove "$PIDFILE" manually and start again
    return 1
  else
    printf "${GREEN}"$NAME" started on $HOST:$PORT${NORMAL}\n"
    mkdir -p $(dirname "$LOGFILE")
    php -S "$HOST":"$PORT" -c tests/php.ini >> "$LOGFILE" 2>&1 &
    mkdir -p $(dirname "$PIDFILE")
    echo "$HOST":"$PORT":$! > $PIDFILE
    return 0
  fi
}

read_pidfile() {
  if [[ -e "$PIDFILE" ]]; then
    PIDFILECONTENT=`cat "$PIDFILE"`
    IFS=: read HOST PORT PID <<< "$PIDFILECONTENT:"
    return 0
  else
    return 1
  fi
}

stop_server () {
  if read_pidfile; then
    kill -9 "$PID"
    rm -f "$PIDFILE"
    printf "${GREEN}"$NAME" stopped!${NORMAL}\n"
    return 0
  else
    printf "${YELLOW}"$NAME" is not running!${NORMAL}\n"
    return 1
  fi
}

status_server() {
  if read_pidfile && kill -0 "$PID" ; then
    printf "${BLUE}"$NAME" is running on ${HOST}:${PORT}${NORMAL}\n"
  else
    printf "${YELLOW}"$NAME" is not running!${NORMAL}\n"
  fi
}


log_server() {
  if read_pidfile && kill -0 "$PID" ; then
    if [[ "$1" = "-f" ]]; then
      TAIL_OPTS="-f"
    fi
    tail $TAIL_OPTS "$LOGFILE"
  else
    printf "${YELLOW}"$NAME" is not running!${NORMAL}\n"
  fi
}


setup_colors

case $1 in
  start) start_server;;
  stop)  stop_server;;
  restart) stop_server; start_server ;;
  status) status_server;;
  log) log_server $2;;
  -h) usage ;;
  --help) usage ;;
  *) usage;;
esac