#!/bin/bash
#########################################################
#                                                       #
#           MMDVMHost configuration patcher             #
#                                                       #
#                   (c)2018 by ON7LDS                   #
#                                                       #
#                        V1.01                          #
#                                                       #
#  This program changes the MMDVMHost configuration     #
#   file to suit the needs of NextionDriver             #
#                                                       #
#########################################################

#Where do we find the data files (groups and DMR is's)
#for Pi-Star : /usr/local/etc/
DATAFILES="/usr/local/etc/"

#########################################################

if [ "$1" == "" ]; then
    echo "You have to specify the config file !"
    exit 1
fi

MMDVMConfig=$1
VERSION="1.01"
echo ""
#echo "Starting NextionDriver_ConvertConfig $VERSION"
echo ""
echo "NOTE: I tried to make this script as foolproof as possible."
echo "  There might still be situations where it does not work"
echo "  as expected."
echo "  If you should discover any bugs, please let me know."
echo ""
echo "Starting NextionDriver_ConvertConfig $VERSION"
echo ""

if [[ -f "$MMDVMConfig" && -w "$MMDVMConfig" ]]; then
    echo "Processing ..."
else
    echo "The file is not a regular file or writable !"
    exit 2
fi

if [[ -f "$MMDVMConfig.old" ]]; then
    echo "There already is a backup file $MMDVMConfig.old"
    echo " If you are sure to run the installer again, then Please remove it."
    exit 3
fi

while IFS='' read -r line || [[ -n "$line" ]]; do
    if [ "$line" == "[NextionDriver]" ]; then
        echo "There already is a [NextionDriver] section."
        echo " I'm going to leave the file as is."
        echo " You'll have to change it by hand if necessary."
        exit 4
    fi
done < "$MMDVMConfig"

# Ok, alles lijkt goed.
mv "$MMDVMConfig" "$MMDVMConfig.old"


NEXTIONPORT_IS_MODEM=""
NEXTIONPORT_IS_DRIVER=""
TRANSPARENT=""
while IFS='' read -r line || [[ -n "$line" ]]; do
    #sectie bepalen
    if [[ "${line:0:1}" == "[" ]]; then
        SECTION=${line:1:-1}
    fi
    #Port van Nextion zoeken, 
    #we moeten weten of het modem is of niet
    if [[ "$SECTION" == "Nextion" && "$line" == "Port=modem" ]]; then
        NEXTIONPORT_IS_MODEM="1"
        echo "Info: Serial port for Nextion is modem."
        echo "      We will have to enable Transparent Data!"
    fi
    if [[ "$SECTION" == "Nextion" && "$line" == "Port="*"ttyNextionDriver" ]]; then
        NEXTIONPORT_IS_DRIVER="1"
        echo "ERROR: The driver already seems to be installed,"
        echo "       so I will not change the configuration."
        echo "       If something is wrong, please correct it by hand."
        mv "$MMDVMConfig.old" "$MMDVMConfig"
        exit 1
    fi
    if [[ "$SECTION" == "Transparent Data" && "$TRANSPARENT" == "" ]]; then
        TRANSPARENT="1"
        echo "Info: Transparent Data section found."
    fi
    if [[ "$SECTION" == "Transparent Data" && "$TRANSPARENT" == "1" && "$line" == "SendFrameType="* ]]; then
        TRANSPARENT="2"
        echo "Info: SendFrameType option found."
    fi
done < "$MMDVMConfig.old"



if [[ "$NEXTIONPORT_IS_MODEM" == "1" && "$TRANSPARENT" == "" ]]; then
    echo "Info: No Transparent Data section."
    echo "      Will be inserted !"
    TRANSPARENT="3"
fi


echo "--->  Creating new ini file..."
SECTION=""
SERIALPORT=""
FOUND_NEXTION=""
FOUND_MODEM=""
while IFS='' read -r line || [[ -n "$line" ]]; do
    #sectie bepalen
    if [[ "${line:0:1}" == "[" ]]; then
        SECTION=${line:1:-1}
    fi

    #[Modem]
    if [[ "$SECTION" == "Modem" ]]; then
        FOUND_MODEM="1"
    fi

    #[Transparent data]
    if [[ "$NEXTIONPORT_IS_MODEM" == "1" && "$SECTION" == "Transparent Data" ]]; then
        if [[ "${line:0:7}" == "Enable=" ]]; then
            TRANSPARENT_ENABLE=${line:7:1}
            echo "Info: Transparent data enable: $TRANSPARENT_ENABLE"
            if [[ "$TRANSPARENT_ENABLE" != "1" ]]; then
                echo "        changing to 1"
                line="Enable=1"
            else
                echo "        OK !"
            fi
            if [[ "$TRANSPARENT" == "1" ]]; then
                TRANSPARENT="x"
                echo "Info: Inserting SendFrameType=1"
                echo "$line" >> "$MMDVMConfig"
                line="SendFrameType=1"
            fi
        fi
        if [[ "$TRANSPARENT" == "2" && "${line:0:14}" == "SendFrameType=" ]]; then
            SENDFRAMETYPE=${line:14:1}
            echo "Info: SendFrameType: $SENDFRAMETYPE"
            if [[ "$SENDFRAMETYPE" != "1" ]]; then
                echo "        changing to 1"
                line="SendFrameType=1"
            else
                echo "        OK !"
            fi
        fi
    fi

    #[Nextion]
    if [[ "$SECTION" == "Nextion" ]]; then
        FOUND_NEXTION="1"
        #Port van Nextion gevonden ?
        # bewaren welke dat is !
        if [[ "${line:0:5}" == "Port=" ]]; then
            SERIALPORT="${line:5}"
            echo "Info: Serial port for Nextion was $SERIALPORT"
            echo "        changing to /dev/ttyNextionDriver"
            line="Port=/dev/ttyNextionDriver"
        fi

    fi

    #eerste sectie na [Nextion] gevonden ?
    # hier zetten we onze gegevens tussen
    if [[  "$SECTION" != "Nextion" && "$FOUND_NEXTION" == "1" && "${line:0:1}" == "[" ]]; then
        echo "Info: Inserting [NextionDriver] section"
        SECTION="[NextionDriver]\nPort=$SERIALPORT\nLogLevel=2\nDataFilesPath=$DATAFILES\nGroupsFile=groups.txt\nDMRidFile=stripped.csv\nremoveDim=0\n\n"
        echo -e "$SECTION" >> "$MMDVMConfig"
        echo -e "\n\nInserted section :"
        echo "------------------------------"
        echo -e "$SECTION"
        echo "------------------------------"
        echo ""
        FOUND_NEXTION=""
        if [ "$SERIALPORT" == "" ]; then
            echo -e "WARNING : no serial port for Nextion found. Check your $MMDVMConfig\n"
        fi
    fi

    if [[ "$SECTION" != "Modem" && "$FOUND_MODEM" == "1" && "${line:0:1}" == "[" && "$TRANSPARENT" == "3" ]]; then
        echo "Info: Inserting [Transparent Data] section"
        SECTION="[Transparent Data]\nEnable=1\nRemoteAddress=127.0.0.1\nRemotePort=40094\nLocalPort=40095\nSendFrameType=1\n\n"
        echo -e "$SECTION" >> "$MMDVMConfig"
        echo -e "\n\nInserted section :"
        echo "------------------------------"
        echo -e "$SECTION"
        echo "------------------------------"
        echo ""
        FOUND_MODEM=""
    fi


    echo "$line" >> "$MMDVMConfig"

done < "$MMDVMConfig.old"