#! /usr/bin/bash

### setting

# max confirmations to pick
confirmMax=1000
# max count to pick (for bash's command arg length limit)
maxInputCount=100
# min amount to pick
minAmount=0
# max amount to pick
maxAmount=5000

# from this address
address="" # write your address

# to this address (to same address : $address)
#sendto=""
sendto=$address

# max amount per output
outputMax=30000
# fee in mocha
fee=1000 # It is also possible to set the required fee indicated in the error message.

# xpchain-cli command (like : xpchain-cli, xpchain-cli -datadir=/path/to/datadir/)
cli="xpchain-cli"
# xpchain-tx command
tx="xpchain-tx"

### end


# working file name
unspentFile=listunspent
amountFile=amount
inputFile=input
outputFile=output
outputMaxMocha=`expr $outputMax \* 10000`

### get transactions
$cli listunspent 1 $confirmMax "[\"$address\"]" true "{\"minimumAmount\":$minAmount, \"maximumAmount\":$maxAmount}" > $unspentFile

### make input json
cat $unspentFile | grep -e txid -e vout | cut -d' ' -f6 | head -`expr $maxInputCount \* 2` | sed -e 's/",/:/' -e 's/"/ in=/' -e 's/,/ /' | xargs -I{} echo -n {} >> $inputFile

### calculate total amount
echo -n "expr 0" > $amountFile
cat $unspentFile | grep amount | head -$maxInputCount | cut -d':' -f2 | cut -d',' -f1 | sed -e 's/\.//' | xargs -I{} echo -n " + {}" >> $amountFile
echo -n " - $fee" >> $amountFile
amount=`source $amountFile`

### calculate output amount
outs=1
piece=$amount
while [ $piece -gt $outputMaxMocha ]
do
        outs=`expr $outs + 1`
        piece=`expr $amount / $outs`
done
piece=`echo -n $piece | sed -e 's/\([0-9]\{4\}\)$/\.\1/'`
amount=`echo -n $amount | sed -e 's/\([0-9]\{4\}\)$/\.\1/'`

### make output json
i=0
while [ $i -lt $outs ]
do
        i=`expr $i + 1`
        echo -n " outaddr=$piece:$sendto" >> $outputFile
done

input=`cat $inputFile`
inputCount=`cat $unspentFile | grep txid | head -$maxInputCount | wc -l`
output=`cat $outputFile`

### cleanup
rm $unspentFile
rm $amountFile
rm $inputFile
rm $outputFile

### summary
echo "#######################################################"
echo "total amount : $amount"
echo "amount per output : $piece"
echo "input count : $inputCount"
echo "output count : $outs"
echo "#######################################################"

echo -n "Please press any key to continue. To abort, press Ctrl-C"
read

raw=`$tx -create $input $output`

$cli decoderawtransaction $raw

echo "!!! CHECK THIS RESULT !!!"
echo -n "Please press any key to continue. To abort, press Ctrl-C"
read

signed=`$cli signrawtransactionwithwallet $raw | grep hex | cut -d'"' -f4`
echo "signed transaction : "
echo $signed

echo "!!! THIS OPERATION IS NOT ABLE TO CANCEL !!!"
echo "Can I send this transaction to network?"
echo -n "Please press any key to continue. To abort, press Ctrl-C"
read

$cli sendrawtransaction $signed