#!/bin/bash
##
## Calculates the balances of the sblocks found from a chain
## Saves stuff too for later reference
##
## The program is not accepting sblocks that hold invalid zchains
## The zchains are the ones that can be crawled back from a zblock that is found
## in the sblock.
##
fullprogrampath="$(realpath $0)"
PROGRAM="$(basename $0)"
descriptionString="Export balances from schain and zchains"
source $AK_LIBDIR/_ak_log
source $AK_LIBDIR/_ak_script
source $AK_LIBDIR/_ak_ipfs
source $AK_LIBDIR/_ak_gpg
source $AK_LIBDIR/_ak_zchain
source $AK_LIBDIR/_ak_schain
source $AK_LIBDIR/_ak_sblock
#set -xe
AK_DB="$AK_WORKDIR/db"

# coin max is 10,000.0000000
# but we count in integer to avoid floating point arithmetic :P
#
# Note that this is subject to change when implemented in C
#
COINBASE=100000000000

GENESIS="00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000"

AK_BALANCESDIR="$AK_WORKDIR/balances"
if [ ! -d $AK_BALANCESDIR ]
then
    mkdir $AK_BALANCESDIR
    if [ $? -ne 0 ]
    then
        _ak_log_error "Could not create $AK_BALANCESDIR"
        exit 1
    fi
fi

AK_INVALIDATED_SBLOCKS="$AK_WORKDIR/invalid_sblocks"
if [ ! -d $AK_INVALIDATED_SBLOCKS ]
then
    mkdir -p $AK_INVALIDATED_SBLOCKS
    if [ $? -ne 0 ]
    then
        _ak_log_error "Could not create $AK_INVALIDATED_SBLOCKS"
        exit 1
    fi
fi

if [ ! -f $AK_WORKDIR/schain.latest ]
then
    _ak_schain_latest_cached
    LATEST="$(cat $AK_WORKDIR/schain.latest | jq -r '.latest_block')"
    #echo -n $LATEST > $AK_WORKDIR/schain.latest
else
    LATEST="$(cat $AK_WORKDIR/schain.latest | jq -r '.latest_block')"
fi

TEMP="$(_ak_make_temp_directory)"
cd $TEMP

_ak_get_zblocks_from_sblock(){
    if [ "$(_ak_sblock_show $1 | jq 'has("zblocks")')" == "true" ]
    then
        mkdir $1 && cd $1
        _ak_sblock_show $1 | jq -r '.zblocks[]' | while read zblock
        do
            touch $zblock.untested
        done
        cd ..
    fi
}

_ak_verify_zblocks_found(){
    if [ -d $1 ]
    then
        cd $1
        find . -type f | while read found_filename
        do
            filename="$(basename $found_filename)"
            zblock="$(echo -n $filename | cut -d '.' -f 1)"
            zblock_status="$(echo -n $filename | cut -d '.' -f 2)"
            if [ "$zblock_status" == "untested" ] && [ ! -f $AK_DB/zblocks-tested/$zblock.success ] && [ ! -f $AK_DB/zblocks-tested/$zblock.failed ]
            then
                _ak_zchain_crawl $zblock > /dev/null 2>&1
                if [ $? -ne 0 ]
                then
                    cp $filename $AK_DB/zblocks-tested/$zblock.failed
                    mv $filename $zblock.failed
                else
                    cp $filename $AK_DB/zblocks-tested/$zblock.success
                    mv $filename $zblock.success
                fi
            elif [ -f $AK_DB/zblocks-tested/$zblock.success ]
            then
                mv $filename $zblock.success
            elif [ -f $AK_DB/zblocks-tested/$zblock.failed ]
            then
                mv $filename $zblock.failed
            fi
        done
        cd ..
    fi
}

_ak_balances_from_sblock(){
    if [ -z $1 ] || [ ! -n "$1" ]
    then
        _ak_log_error "No sblock provided $1"
        exit 1
    fi
    CUR_TARGET="$1"
    _ak_log_info "Extracting balances from sblock provided $CUR_TARGET"
    if [ ! -f $AK_MINEDBLOCKSDIR/$CUR_TARGET ]
    then
        _ak_log_error "Sblock not found $CUR_TARGET"
    fi
    _ak_log_info "Checking zblocks in sblock $CUR_TARGET"
    _ak_get_zblocks_from_sblock $CUR_TARGET
    _ak_log_info "Verifying zblocks in sblock $CUR_TARGET"
    _ak_verify_zblocks_found $CUR_TARGET
    _ak_log_debug "Looking for failed ones"
    if [ -d $CUR_TARGET ]
    then
        find $CUR_TARGET -type f | grep failed
        if [ $? -ne 0 ]
        then
            _ak_rewards_from_sblock $CUR_TARGET
        else
            _ak_log_warning "$CUR_TARGET is invalid"
        fi
    fi
    #sleep 3
    _ak_sblock_show $CUR_TARGET | jq
}

_ak_rewards_from_sblock(){
    CUR_TARGET="$1"
    GPG="$(_ak_sblock_show $CUR_TARGET | jq -r '.output')"
    if [ "$GPG" == "null" ]
    then
        GPG="$(_ak_sblock_show $CUR_TARGET | jq -r '.miner')"
    fi
    AMOUNT="$(_ak_sblock_show $CUR_TARGET | jq -r '.amount')"
    if [ "$AMOUNT" == "null" ]
    then
        AMOUNT="$(_ak_sblock_show $CUR_TARGET | jq -r '.reward')"
    fi
    TIMESTAMP="$(_ak_sblock_show $CUR_TARGET | jq -r '.timestamp')"
    _ak_log_info "Found [$CUR_TARGET]($TIMESTAMP) $AMOUNT to $GPG"
    if [ -f "$AK_BALANCESDIR/$(_ak_gpg_key_get_fingerprint_from_ipfs $GPG)" ]
    then
        grep "$TIMESTAMP:$CUR_TARGET:$AMOUNT" $AK_BALANCESDIR/$(_ak_gpg_key_get_fingerprint_from_ipfs $GPG) > /dev/null 2>&1
        if [ $? -ne 0 ]
        then
            echo "$TIMESTAMP:$CUR_TARGET:$AMOUNT" >> $AK_BALANCESDIR/$(_ak_gpg_key_get_fingerprint_from_ipfs $GPG)
            _ak_log_info "Added [$CUR_TARGET]($TIMESTAMP) $AMOUNT to $GPG"
        fi
    else
        echo "$TIMESTAMP:$CUR_TARGET:$AMOUNT" >> $AK_BALANCESDIR/$(_ak_gpg_key_get_fingerprint_from_ipfs $GPG)
        _ak_log_info "Added [$CUR_TARGET]($TIMESTAMP) $AMOUNT to $GPG"
    fi
}

_ak_sblock_get_previous(){
    if [ -z $1 ] || [ ! -n "$1" ]
    then
        _ak_log_error "No sblock provided !!"
        exit 1
    fi
    CUR_TARGET="$1"
    if [ ! -f $AK_MINEDBLOCKSDIR/$CUR_TARGET ]
    then
        _ak_log_error "Sblock not found"
        exit 1
    fi
    PREVIOUS="$(_ak_sblock_show $CUR_TARGET | jq -r '.previous')"
    echo -n $PREVIOUS
}

_ak_balances_calculate(){
    if [ ! -z $1 ] && [ -n "$1" ]
    then
        _ak_log_info "Calculating balance for $1"
        CUR_TARGET="$1"
        if [ ! -f $AK_BALANCESDIR/$CUR_TARGET ]
        then
            _ak_log_warning "Address not found"
            echo -n '0' > $AK_BALANCESDIR/$CUR_TARGET.total
        else
            total=0
            # Zero cause we are now starting counting from the begging
            echo -n '0' > $AK_BALANCESDIR/$CUR_TARGET.total
            cat $AK_BALANCESDIR/$CUR_TARGET | cut -d ':' -f 3 | while read value
            do
                _ak_log_info "Found value $value for $CUR_TARGET"
                total=$(($total + $value))
                _ak_log_info "New total $total for $CUR_TARGET"
                echo -n $total > $AK_BALANCESDIR/$CUR_TARGET.total
            done
        fi
    else
        _ak_log_info "Calculating balances"
        find $AK_BALANCESDIR -type f | grep -v 'total' | while read account
        do
            _ak_balances_calculate "$(basename $account)"
        done
    fi
}

_ak_balances_print(){
    if [ ! -z $1 ] && [ -n "$1" ]
    then
        CUR_TARGET="$1"
        if [ ! -f $AK_BALANCESDIR/$CUR_TARGET.total ]
        then
            _ak_log_error "Account not found"
            exit 1
        fi
        printf '%s:%s\n' "$CUR_TARGET" "$(cat $AK_BALANCESDIR/$CUR_TARGET.total)"
    else
        find $AK_BALANCESDIR -type f | grep total | while read CUR_TARGET
        do
            printf '%s:%s\n' "$(basename $CUR_TARGET | cut -d'.' -f1)" "$(cat $CUR_TARGET)"
        done
    fi
}

_ak_schain_counting_balances(){
    if [ ! -z $1 ] && [ -n "$1" ]
    then
        CUR_TARGET="$1"
    else
        _ak_log_error "No next target found. So long for $1"
        exit 1
    fi
    _ak_log_info "Looking at $CUR_TARGET"
    counter=$(($counter + 1))
    if [ "$1" == "$GENESIS" ]
    then
        _ak_balances_calculate
        _ak_balances_print
        _ak_log_warning "Looks like genesis. Exiting with 0"
        exit 0
    fi
    if [ ! -f $AK_MINEDBLOCKSDIR/$CUR_TARGET ]
    then
        _ak_log_error "Could not find $CUR_TARGET"
        exit 1
    else
        _ak_balances_from_sblock $CUR_TARGET
        NEXT_TARGET="$(_ak_sblock_get_previous $CUR_TARGET)"
        # mv $AK_MINEDBLOCKSDIR/$CUR_TARGET $AK_INVALIDATED_SBLOCKS/$CUR_TARGET
        _ak_log_info "Found previous: $NEXT_TARGET"
        _ak_schain_counting_balances "$NEXT_TARGET"
    fi
}

if [ ! -z $1 ] && [ -n "$1" ]
then
    _ak_usage
else
    CUR_TARGET="$LATEST"
    _ak_log_info "$CUR_TARGET $LATEST"
    _ak_schain_counting_balances $CUR_TARGET
fi