#!/bin/bash
PARAM="$1"
ACK_FILE=/etc/lliurex-analytics/status

# MAIN PURPOSE FOR THIS SCRIPT IS WRITE THE FILE
# IF ISN'T POSSIBLE IT DOESN'T MAKE SENSE CONTINUE
RIGHTS_TO_ACK=""
if [ -w "${ACK_FILE}" ]; then
    RIGHTS_TO_ACK="yes"
else
    # UNPRIVILEGED USERS CAN'T APPROVE OR FILE DOESN'T EXIST
    exit 0
fi

# CHECK BASIC DEPENDENCIES
WHICH="$(which which)"
if [ -z "${WHICH}" ]; then
    exit 0
fi	
DPKG="$(${WHICH} dpkg)"
GREP="$(${WHICH} egrep)"

if [ -z "${DPKG}" -o -z "${GREP}" ]; then 
    exit 0
fi
# CHECK MAIN DEPENDENCIES
AUDIT_INSTALLED="$(${DPKG} -l|${GREP} -o auditd)"
PYTHON_DAEMON_INSTALLED="$(${DPKG} -l|${GREP} -o python-daemon)"

if [ -z "${AUDIT_INSTALLED}" -o -z "${PYTHON_DAEMON_INSTALLED}" ]; then 
    exit 0
fi

# CHECK DEPENDENCIES 4 TESTING
N4DCLI="$(${WHICH} n4d-client)"
FINDMNT="$(${WHICH} findmnt)"
CAT="$(${WHICH} cat)"
DEBCONF_COMM="$(${WHICH} debconf-communicate)"
LLIUREX_VERSION=$(${WHICH} lliurex-version)

if [ -z "${N4DCLI}" -o -z "${FINDMNT}" -o -z "${CAT}" -o -z "${DEBCONF_COMM}" -o -z "${LLIUREX_VERSION}" ]; then 
    exit 0
fi


# ACK FILE FUNCTIONS 
accept_file(){
    echo "yes" > ${ACK_FILE}
}
deny_file(){
    echo "no" > ${ACK_FILE}
}
reset_file(){
    echo "" > ${ACK_FILE}
}
check_file(){
    if [ -n "${LOCAL_ACKNOWLEDGE}" ]; then
        exit 0
    fi
}

# INSTALLATION TYPE DETECTION & ACKNOWLEDGE TYPES
RUN_ON_LIVE="$(${FINDMNT} -P -t squashfs|${GREP} -i 'target="/rofs" source="/dev/loop[0-9]?"')"

if [ -n "${RUN_ON_LIVE}" ]; then
    #ON LIVE SYSTEMS STATS ARE DEACTIVATED
    deny_file
    exit 0
fi

RUN_ON_LTSP="$(echo $LTSP_FATCLIENT)"
if [ -n "${RUN_ON_LTSP}" -a "${RUN_ON_LTSP}" = "false" ]; then
    #ON THIN CLIENTS THE SERVER SEND THE STATISTICS
    exit 0
fi

RUN_AS_CLIENT=$(${LLIUREX_VERSION} |${GREP} -i -o client|uniq)
RUN_AS_SERVER=$(${LLIUREX_VERSION} |${GREP} -i -o server|uniq)
RUN_AS_DESKTOP=""
if [ -z "${RUN_AS_CLIENT}" -a -z "${RUN_AS_SERVER}" ];then
    RUN_AS_DESKTOP="yes"
else
    #NOT USED INSIDE CONFIRMATOR, THIS LOGIC IS INTO COLLECTOR AND WILL BE ACCEPTED NOT NEED WRITE THE LOCAL FILE
    SERVER_OVERRIDE="$(${N4DCLI} -h server -c VariablesManager -m get_variable -a 'STATS_ENABLED'|${GREP} '1')"
    if [ -n "${SERVER_OVERRIDE}" ]; then
        exit 0
    fi
fi

LOCAL_ACKNOWLEDGE="$(${CAT} ${ACK_FILE}|${GREP} -E -i -o 'yes|no')"
# IF ALREADY ACCEPTED OR DENIED AND IS NOT FORCED EXECUTION AFTER CHECK SERVER OVERRIDE WE CAN EXIT AT THIS POINT
if [ -n "${LOCAL_ACKNOWLEDGE}" -a "${PARAM}" != "-f" ]; then
    exit 0
fi

DEBCONF_ACKNOWLEDGE="$(echo get lliurex-statistics/acknowledge|${DEBCONF_COMM} 2>/dev/null |${GREP} -E -i -o 'true|false')"


# DIALOG FUNCTION 

show_dialog(){
# Script messages l10n
# Detects which language is set
RET=""
_langrc=0
echo $LANGUAGE | grep -q "^ca_ES" || _langrc=1

# All message strings in both languages
VA_CONFIRM="Desitgeu acceptar la monitorització d'estadístiques?"
ES_CONFIRM="¿Desea aceptar la monitoritzación de estadísticas?"

# Valencian is selected by default
CONFIRM="$VA_CONFIRM"

# But they could change if Spanish is detected
if [ $_langrc -eq 1 ] ; then
        CONFIRM="$ES_CONFIRM"
fi

zenity --question --text "$CONFIRM"

if [ $? -eq 0 ]; then
    RET="yes"
fi
}
# AT THIS POINT:
# - FILE IS PRESENT & IT'S WRITEABLE
# - THIS IS NOT A LIVE SYSTEM
# - THIS IS NOT A LTSP THIN CLIENT
# - SERVER IS NOT FORCING THE ACKNOWLEDGE OF COLLECT STATISTICS

# TRY TO WRITE ACK FILE NOW 
# ACCEPTATION PRIORITY: 1 SERVER ACK, 2 DEBCONF ACK, 3 LOCAL ACK

# DEBCONF ACK (HIGH PRIORITY OVER LOCAL FILE) : POSSIBLE VALUES ARE: TRUE, FALSE, ASK (LOCAL ANSWER) (DEFAULT IF UNATTENDED INSTALL)
if [ -n "${DEBCONF_ACKNOWLEDGE}" ]; then
    if [ "${DEBCONF_ACKNOWLEDGE}" = "true" ]; then
        accept_file
        exit 0
    fi
    if [ "${DEBCONF_ACKNOWLEDGE}" = "false" ]; then
        deny_file
        exit 0
    fi
fi

# LOCAL ACK
# ALL OTHER EXECUTIONS 
#if [ -n ${RUN_AS_DESKTOP} -o -n ${RUN_AS_SERVER} -o -n ${RUN_AS_CLIENT} ]; then

#IF ALREADY SET THE ANSWER (yes|no) check_file AVOID ASKING ANOTHER TIME
check_file
show_dialog
if [ -n "${RET}" ]; then
    accept_file
else
    deny_file
fi
exit 0

#fi