#!/bin/sh

readconfig() {
echo "=============------------  Read cofig --------------============"
rcfg
echo "================--------  Parse config -------------============"
ssid=`cat /tmp/config.txt | grep ssid | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d " " -f 2`
key=`cat /tmp/config.txt | grep ^key | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`
###########################
privkey=`cat /tmp/config.txt | grep PrivateKey | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`
addrcam=`cat /tmp/config.txt | grep Address | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`;addrcam="${addrcam%/*}"
gateway=`cat /tmp/config.txt | grep Gateway | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`;gateway="${gateway%<*}"
pubkey=`cat /tmp/config.txt | grep PublicKey | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`
allowips=`cat /tmp/config.txt | grep AllowedIPs | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`;allowips="${allowips%<*}"
endpoint=`cat /tmp/config.txt | grep Endpoint | sed '/^#/d' | sed 's/ \{1,\}/ /g' | cut -d: -d " " -f 2`;endpoint="${endpoint%<*}"
###########################
dumpconfig=`echo -n "$ssid$key"`
}

setconfig() {
echo "===========--------------  set wifi config ------------=========="
if [[ ! -z "$ssid" && ! -z "$key" ]]
 then
 cur=`sed -n '3p' /usr/bin/crCli`
 new="wpa_passphrase $ssid $key >/tmp/wpa_supplicant.conf"

 if [[ "$cur" == "$new" ]]
   then
   echo "Ok. ssid not replaced"
   else
   echo "Ok. Set new ssid, key"
   sed -i '3d' /usr/bin/crCli
   sed -i "3i \\$new" /usr/bin/crCli
 fi
fi

if [[ ! -z "$privkey" && ! -z "$addrcam" && ! -z "$pubkey" && ! -z "$allowips" && ! -z "$endpoint" ]]
 then
  echo "=======---------- Not Null ------========"
  corr=0
  #########################################################################
  addrcam="address ${addrcam%/*}"
  gateway="gateway ${gateway%/*}"
  privkey="PrivateKey = $privkey"
  pubkey="PublicKey = $pubkey"
  allowips="AllowedIPs = $allowips"
  endpoint="Endpoint = $endpoint"
  eaddrcam=`sed -n '48p' /etc/network/interfaces | sed 's/^ *//'`
  egateway=`sed -n '50p' /etc/network/interfaces | sed 's/^ *//'`

  eprivkey=`cat /etc/wireguard.conf | grep PrivateKey`
  epubkey=`cat /etc/wireguard.conf | grep PublicKey`
  eallowips=`cat /etc/wireguard.conf | grep AllowedIPs`
  eendpoint=`cat /etc/wireguard.conf | grep Endpoint`
  if [[ ! "$addrcam" == "$eaddrcam" ]]
    then
    sed -i '48d' /etc/network/interfaces
    sed -i "48i \\$addrcam" /etc/network/interfaces
    corr=1
    echo "==========-----------   correct addr in interfaces ---------========"
  fi

  if [[ ! "$gateway" == "$egateway" ]]
    then
      sed -i '50d' /etc/network/interfaces
      sed -i "50i \\$gateway" /etc/network/interfaces
      corr=1
      echo "======------ correct gateway in interfaces -----====="
  fi

  if [[ ! "$privkey" == "$eprivkey" ]]
    then
     corr=1
  fi
  if [[ ! "$pubkey" == "$epubkey" ]]
    then
     corr=1
  fi
  if [[ ! "$allowips" == "$eallowips" ]]
    then
     corr=1
  fi
  if [[ ! "$endpoint" == "$eendpoint" ]]
    then
     corr=1
  fi
  if [[ $corr == 1 ]]
   then
    echo "===========--------------- Set WG ----------============"
echo "WG addr:: $addrcam"
    if [[ ! "$addrcam" == "address xxx.xxx.xxx.xxx" ]]
      then sed -i '46s/manual/auto/' /etc/network/interfaces
      else sed -i '46s/auto/manual/' /etc/network/interfaces
    fi
    rm -f /etc/wireguard.conf
    echo "[Interface]" >> /etc/wireguard.conf
    echo "$privkey" >> /etc/wireguard.conf
    echo "[Peer]" >> /etc/wireguard.conf
    echo "$pubkey"  >> /etc/wireguard.conf
    echo "$allowips" >> /etc/wireguard.conf
    echo "$endpoint" >> /etc/wireguard.conf
    echo "PersistentKeepalive = 5" >> /etc/wireguard.conf
    rm -f /sdcard/config.hex
    rm -f /sdcard/config.txt
  fi
fi
}

checkconfig() {
echo "check config"
if [ -f /sdcard/config.hex ]
then
 echo "config exist"
 readconfig
 setconfig
else
echo "config not exist"
fi

if [ -f /sdcard/hardres ]
then
 rm -f /sdcard/hardres
 firstboot
fi
}

case "$1" in
start)
        echo "read config on SDcard"
        checkconfig
        echo "set config done"
        # commands to launch application
        ;;
esac