#!/bin/bash

##################################################
# Mount dir                                      #
# - $ROOT/exports                                #
# - $ROOT/logs                                   #
# ENV                                            #
# - OPTS                                    #
# - _CONF_*                                      #
##################################################

set -euo pipefail
export LANG=en_US.UTF-8
trap Quit EXIT

PIDS=
GOT_SIGTERM=
OPTS="${OPTS:-}"

function Print {
    local file=/dev/null
    [ '-f' = "$1" ] && file=$2 && shift && shift
    date +"[%F %T] $*" | tee -a $file
}

function Quit {
    while :; do
        pkill -f  chromedriver   && Print killing chromedriver ... || break
        sleep 1
    done
    Print Container stopped.
    test -n "$GOT_SIGTERM"
}

function ModifyConf {
    local kv=
    Print Modifying $JAR.properties ...
    while read kv; do
        [ -z "$kv" ] && return 0
        Print Modifying property: ${kv%%=*} ...
        sed -i "/^${kv%%=*} *=/c$kv" $JAR.properties
    done <<< "$(env | grep '^_CONF_' | sed 's/_CONF_//')"
}

function StartProc {
    Print Starting chromedriver ...
    ./chromedriver  --allowed-ips $OPTS  \
        >/dev/null \
        2>>logs/chromedriver.out &
    PIDS="$PIDS $!"
    Print Chromedriver started.
}

function Main {
    local pid=
    cd $(dirname $0)
#    ModifyConf
    StartProc
    trap "GOT_SIGTERM=1; Print Got SIGTERM ..." SIGTERM
    while [ -z "$GOT_SIGTERM" ] && sleep 2; do
        for pid in $PIDS; do
            [ ! -e /proc/$pid ] && Print Unexpected error! && exit
        done
    done
}

# Start here
Main