#!/bin/sh

mode=$1
i2c_bus=$2
chip_slave=$3
server_platform=$4
server_type=$5

test_data1=$2
test_data2=$3

path=`pwd`
fmt_print="${path}/format_print.sh"
i2c_script="${path}/i2c_${server_platform}.sh"
server_script="${path}/platform_${server_type}.sh"

# EMC1413 channel name
EMC1413_Channel0_name="Channel0"
EMC1413_Channel1_name="Channel1"
EMC1413_Channel2_name="Channel2"

REG_emc1413_TD1_H="0x00"
REG_emc1413_TD1_L="0x29"
REG_emc1413_TD2_H="0x01"
REG_emc1413_TD2_L="0x10"
REG_emc1413_TD3_H="0x23"
REG_emc1413_TD3_L="0x24"

print_help(){
    echo "---------------------------------------------------------"
    echo "<option> read"
    echo "  Format : ./plugin_emc1413.sh read [i2c-bus] [slave] [platform]"
    echo "  Example: ./plugin_emc1413.sh read 13 0x42 m7"
    echo "---------------------------------------------------------"
    echo "<option> test"
    echo "  Format : ./plugin_emc1413.sh test [data1] [data2]"
    echo "  Example: ./plugin_emc1413.sh test 0x24 0x00"
    echo "---------------------------------------------------------"
    echo "<option> help"
    echo "  Format : ./plugin_emc1413.sh help"
    echo "  Example: ./plugin_emc1413.sh help"
    echo "---------------------------------------------------------"
}

# @Param1 emc1413 data high 8bit
# @Param2 emc1413 data low 8bit
# @Param3 customization channel name
convert_emc1413_data(){
    if [ "$3" = "disable" ];then
        return
    fi
    
    # remove data prefix '0x'
    hex_value1=$(echo "$1" | awk '{sub(/^0x/,""); print}')
    hex_value2=$(echo "$2" | awk '{sub(/^0x/,""); print}')

    # bc calculator recognized upper case only, change data to upper case
    upper_hex_value1=$(echo "$hex_value1" | awk '{ 
        for(i=1; i<=length($0); i++){ 
            if(tolower(substr($0,i,1)) ~ /^[a-f]$/) 
                printf toupper(substr($0,i,1)); 
            else 
                printf substr($0,i,1); 
        } 
        print "" 
    }')
    upper_hex_value2=$(echo "$hex_value2" | awk '{ 
        for(i=1; i<=length($0); i++){ 
            if(tolower(substr($0,i,1)) ~ /^[a-f]$/) 
                printf toupper(substr($0,i,1)); 
            else 
                printf substr($0,i,1); 
        } 
        print "" 
    }')

    # change data from hex to dec
    dec_value1=$(echo "ibase=16; $upper_hex_value1" | bc)
    dec_value2=$(echo "ibase=16; $upper_hex_value2" | bc)

    # calculate tempreture
    temp=$(echo "scale=4; $dec_value1 + ($dec_value2 / 32 * 0.125 )" | bc)

    # print result to consol
    format_temp=$(echo "$temp" | awk '{ if ($0 ~ /^\./) print "0" $0; else print $0 }')

    echo "$3 : $format_temp C, hex value : $hex_value1 $hex_value2"

}

read_emc1413_data(){
    res_td1_h=`$i2c_script $i2c_bus 1 $chip_slave $REG_emc1413_TD1_H 1`
    res_td1_l=`$i2c_script $i2c_bus 1 $chip_slave $REG_emc1413_TD1_L 1`
    res_td2_h=`$i2c_script $i2c_bus 1 $chip_slave $REG_emc1413_TD2_H 1`
    res_td2_l=`$i2c_script $i2c_bus 1 $chip_slave $REG_emc1413_TD2_L 1`
    res_td3_h=`$i2c_script $i2c_bus 1 $chip_slave $REG_emc1413_TD3_H 1`
    res_td3_l=`$i2c_script $i2c_bus 1 $chip_slave $REG_emc1413_TD3_L 1`

    # After read option , reset pca9548
    $server_script reset

    $fmt_print "log" "Info" "[plugin_emc1413] TD1 : $res_td1_h $res_td1_l"
    $fmt_print "log" "Info" "[plugin_emc1413] TD2 : $res_td2_h $res_td2_l"
    $fmt_print "log" "Info" "[plugin_emc1413] TD3 : $res_td3_h $res_td3_l"

    $fmt_print "console" "Info" "The EMC1413 value is :"
    convert_emc1413_data $res_td1_h $res_td1_l "$EMC1413_Channel0_name" 
    convert_emc1413_data $res_td2_h $res_td2_l "$EMC1413_Channel1_name"
    convert_emc1413_data $res_td3_h $res_td3_l "$EMC1413_Channel2_name"
}

test_emc1413_data(){
    convert_emc1413_data $test_data1 $test_data2 "Temp"
}

case "${mode}" in
    "read")
        read_emc1413_data
        ;;
    "test")
        test_emc1413_data
        ;;
    "help")
        print_help
        ;;
    *)
        $fmt_print "console" "Error" "[plugin_emc1413]Unexpected Input Param : $mode"
        print_help
        ;;
esac