#!/bin/bash

source kcov_blkar_fun.sh

exit_code=0

VERSIONS=(17)

source functions.sh

file_size=$(ls -l dummy | awk '{ print $5 }')

# generate test data
dd if=/dev/urandom of=dummy bs=$file_size count=1 &>/dev/null

for ver in ${VERSIONS[*]}; do
    for (( i=0; i < 1; i++ )); do
        if   [[ $ver == 17 ]]; then
            data_shards=$((1 + RANDOM % 128))
            parity_shards=$((1 + RANDOM % 128))
        elif [[ $ver == 18 ]]; then
            data_shards=$((1 + RANDOM % 128))
            parity_shards=$((1 + RANDOM % 128))
        else
            data_shards=$((1 + RANDOM % 128))
            parity_shards=$((1 + RANDOM % 128))
        fi

        container_name=corrupt_$data_shards\_$parity_shards\_$ver.sbx

        echo -n "Encoding in version $ver, data = $data_shards, parity = $parity_shards"
        output=$(./../blkar encode --json --sbx-version $ver -f dummy $container_name \
                        --hash sha1 \
                        --rs-data $data_shards --rs-parity $parity_shards)
        if [[ $(echo $output | jq -r ".error") != null ]]; then
            echo " ==> Invalid JSON"
            exit_code=1
        fi
        if [[ $(echo $output | jq -r ".stats.sbxVersion") == "$ver" ]]; then
            echo -n " ==> Okay"
        else
            echo -n " ==> NOT okay"
            exit_code=1
        fi
        if [[ $(echo $output | jq -r ".stats.hash" | awk '{ print $1 }') == "SHA1" ]]; then
            echo " ==> Okay"
        else
            echo " ==> NOT okay"
            exit_code=1
        fi

        echo "Corrupting at $parity_shards random positions"
        for (( p=0; p < $parity_shards; p++ )); do
            pos=$((RANDOM % $file_size))
            # echo "#$p corruption, corrupting byte at position : $pos"
            corrupt $pos $container_name
        done

        echo -n "Repairing"
        output=$(./../blkar repair --json --verbose $container_name)
        if [[ $(echo $output | jq -r ".error") != null ]]; then
            echo " ==> Invalid JSON"
            exit_code=1
        fi
        if [[ $(echo $output | jq -r ".stats.sbxVersion") == "$ver" ]]; then
            echo " ==> Okay"
        else
            echo " ==> NOT okay"
            exit_code=1
        fi

        output_name=dummy_$data_shards\_$parity_shards

        echo -n "Decoding"
        output=$(./../blkar decode --json -f $container_name - 2>&1 > $output_name)
        if [[ $(echo $output | jq -r ".error") != null ]]; then
            echo " ==> Invalid JSON"
            exit_code=1
        fi
        if [[ $(echo $output | jq -r ".stats.sbxVersion") == "$ver" ]]; then
            echo " ==> Okay"
        else
            echo " ==> NOT okay"
            exit_code=1
        fi

        echo -n "Comparing decoded data to original"
        cmp dummy $output_name
        if [[ $? == 0 ]]; then
            echo " ==> Okay"
        else
            echo " ==> NOT okay"
            exit_code=1
        fi
    done
done

echo $exit_code > exit_code
