#!/bin/sh
QPKG_CONF=/etc/config/qpkg.conf

CMD_ECHO="/bin/echo"
CMD_CAT="/bin/cat"
CMD_MKDIR="/bin/mkdir"
CMD_GETCFG="/sbin/getcfg"

IS_LOG_INIT=FALSE

function app_log()
{
    # log information to app's log file
    [ "$IS_LOG_INIT" == TRUE ] && $CMD_ECHO "[$(date '+%Y/%m/%d %H:%M:%S')] $@" >> $LOG_FILE
}

function app_err_log()
{
    # log error to app's log file
    [ "$IS_LOG_INIT" == TRUE ] && $CMD_ECHO "[$(date '+%Y/%m/%d %H:%M:%S')] [Error] $@" >> $LOG_FILE
}

function exec_err()
{
    EXEC_CMD="$@"
    ret=$($EXEC_CMD 2>&1) || app_err_log "$EXEC_CMD ret[$ret]"
}

function print_caller()
{
    if [ -d "/proc/$PPID" ] && [ -f "/proc/$PPID/cmdline" ]; then
        app_log "caller:$PPID ($($CMD_CAT /proc/$PPID/cmdline))"
    else
        app_log "caller:$PPID"
    fi
}

function log_init()
{
    if [[ -z "$1" ]]; then
        echo "Error:QPKG_NAME is Null"
        return 0
    else
        QPKG_INSTALL_PATH=`${CMD_GETCFG} ${1} Install_Path -d FALSE -f ${QPKG_CONF}`
        TMP_PATH="${QPKG_INSTALL_PATH}/logs"
        LOG_FILE="${TMP_PATH}/${QPKG_NAME}_sh.log"

        cd $QPKG_INSTALL_PATH
        [ ! -d "${TMP_PATH}" ] && exec_err $CMD_MKDIR -m 777 ${TMP_PATH} && app_log "create ${TMP_PATH}"
        IS_LOG_INIT=TRUE
        print_caller
    fi
}