#!/bin/bash
##
## Indexes, shows, imports, adds, sets and gets values from and to the
## zchain and files.
##
## Usage:
##
##     -h, --help                      Prints this help message
##     -l, --local-index               Show current status
##     --show <data IPFS CIDv0>        Show profile entry from specified DATA
##                                     IPFS CIDv0
##     -s, --set <property> <value>    Sets a profile value
##     -g, --get <property>            Gets a profile value from the on-disk
##                                     file.
##
## Advanced (use with caution may produce duplicate entries):
##
##     -a, --add <file>                Creates a data file from the profile file
##                                     you point (file should already be in
##                                     ZPROFILEDIR).
##     -i, --import <folder>           Import a folder to zchain #TODO
##
fullprogrampath="$(realpath $0)"
PROGRAM=$(basename $0)
descriptionString="Profile module"
ZPROFILEDIR="$AK_WORKDIR/profile"

source $AK_LIBDIR/_ak_log
source $AK_LIBDIR/_ak_script
source $AK_LIBDIR/_ak_ipfs
source $AK_LIBDIR/_ak_gpg
source $AK_LIBDIR/_ak_zblock

# Whatever the command is, we check if $ZPROFILEDIR is there.
# If NOT we create it and we change dir there.
if [ ! -d $ZPROFILEDIR ]
then
    mkdir $ZPROFILEDIR
    _ak_log_info "zprofiledir created"
else
    _ak_log_info "zprofiledir found"
fi

cd $ZPROFILEDIR

# This is working with DATA blocks. DATA that matched profile/add ACTION
#
# The profile settings/configuration is part of the blockchain produced.
# Hence, we need a specific DATA block that actually has the announcement of a
# {"key":"value"} pair.
_ak_modules_profile_show(){
    if [ ! -z $1 ]
    then
        _ak_log_info "Working with $1"
        _ak_ipfs_cat $(echo $(_ak_ipfs_cat $1) | jq '.ipfs' -r)
    else
        _ak_log_error "No DATA provided"
        exit 1
    fi
}

# This should retrieve a specific value from our profile otherwise it dumps the
# whole profile values.
_ak_modules_profile_propget(){
    if [ ! -z $1 ]
    then
        if [ ! -f $ZPROFILEDIR/$1 ]
        then
            _ak_log_error "property not found $1"
        else
            cat $ZPROFILEDIR/$1
        fi
    else
        _ak_log_error "No particular property... indexing"
        _ak_modules_profile_index
    fi
}

_ak_modules_profile_propwrite(){
    cat > $ZPROPERTY_FILE << EOF
{
    "$ZPROPERTY_KEY":"${ZPROPERTY_VALUE}"
}
EOF
    if [ $? == 0 ]
    then
        _ak_log_info "Added successfully... proceeding"
        IPFS_FILE=$(_ak_ipfs_add $ZPROPERTY_FILE)
        _ak_log_info "Prop writting,,, $IPFS_FILE"
        _ak_modules_profile_add $ZPROPERTY_KEY
        cd $ZPROFILEDIR
    else
        _ak_log_error "Couldn't write to file $ZPROFILEDIR/$TO_FILE"
        exit 1
    fi
}

_ak_modules_profile_propset(){
    if [ ! -z $1 ]
    then
        ZPROPERTY_FILE="$ZPROFILEDIR/$1"
        ZPROPERTY_KEY="$1"
        if [ ! -f $ZPROPERTY_FILE ]
        then
            _ak_log_warning "No such property: $ZPROPERTY_KEY ... creating"
            ZPROPERTY_VALUE="$2"
            if [ ! -z "$ZPROPERTY_VALUE" ]
            then
                touch $ZPROPERTY_FILE
                _ak_log_debug "$ZPROPERTY_KEY = $ZPROPERTY_VALUE in file $ZPROPERTY_FILE"
                _ak_modules_profile_propwrite #"$ZPROPERTY_FILE" "${ZPROPERTY_VALUE}"
            else
                _ak_log_error "No value for $1"
            fi
        else
            _ak_log_info "found $ZPROPERTY_FILE"
            _ak_log_debug "$ZPROPERTY_KEY = $ZPROPERTY_VALUE in file $ZPROPERTY_FILE"
            ZPROPERTY_VALUE="$2"
            read -p "Overwrite $1 with ${ZPROPERTY_VALUE} ? " yn
            case $yn in
                [Yy]* ) _ak_modules_profile_propwrite;;# "$ZPROPERTY_" "${ZPROPERTY_VALUE}";;
                [Nn]* ) exit 130;;
                * ) echo "Answer please";;
            esac
            _ak_log_debug $IPFS_FILE
            _ak_modules_profile_show $IPFS_FILE
        fi
    else
        _ak_log_error "conditions unmet"
        exit 244
    fi
}
_ak_modules_profile_index(){
    FILES="$(ls -1 $ZPROFILEDIR)"
    i=0
    echo -n "{"
    for FILE in $FILES
    do
        if [ $FILE != "README" ]; then
            if [ $i != "0" ]; then
                echo -n ",";
            fi
            PROP=$(echo $(cat $ZPROFILEDIR/$FILE | ak-json2bash) | cut -d '=' -f 1 | awk '{print $0}')
            VAL=$(echo $(cat $ZPROFILEDIR/$FILE | ak-json2bash) | cut -d '=' -f 2 | awk '{print $1}')
            echo -n '"'$PROP'":"'$VAL'"';
            let i+=1
        fi
    done
    echo "}"
}

_ak_modules_profile_import(){
    if [ ! -z $1 ]
    then
        if [ ! -d $1 ]
        then
            _ak_log_error "Profile folder check: Folder $1 does not exist. Stopping..."
            exit 4
        else
            _ak_log_info "Profile folder check: Folder $1 exists."
            fl="$(ls -1 $1)"
            for f in $fl
            do
                _ak_modules_profile_add $1/$f
            done
        fi
    else
        _ak_log_error "No value"
        exit 6
    fi
    exit 224
}

# Adds a file as a profile/add ACTION on the zchain.
_ak_modules_profile_add(){
    TEMPASSIN="$(_ak_make_temp_directory)"
    cd $TEMPASSIN
    if [ -f $ZPROFILEDIR/$1 ]; then
        FILE="$ZPROFILEDIR/$1"
        _ak_log_info "Adding from " $FILE
        FILE_IPFS_HASH=$(_ak_ipfs_add $FILE)
        FILE_SIGN_FILE=$(pwd)/$1".asc"
        _ak_gpg_sign_detached $FILE_SIGN_FILE $FILE
        FILE_SIGNATURE=$(_ak_ipfs_add $FILE_SIGN_FILE)
        cat > data <<EOF
{
   "datetime":"$(date -u +%s)",
   "ipfs":"$FILE_IPFS_HASH",
   "detach":"$FILE_SIGNATURE"
}
EOF
    else
        _ak_log_error "File $FILE doesn't exist"
        exit 2
    fi

    _ak_zblock_pack "profile/add" $(pwd)/data
    if [ $? -ne 0 ]
    then
        _ak_log_error "Error while packing"
        exit 1
    fi
    _ak_log_info "Profile zblock added successfully"
    cd $ZPROFILEDIR
    rm -rf $TEMPASSIN
}


if [ ! -z $1 ]; then
    case $1 in
        -h | --help) _ak_usage; exit;;
        -l | --local-index) _ak_modules_profile_index; exit;;
        --show) _ak_modules_profile_show $2; exit;;
        -i | --import) _ak_modules_profile_import $2; exit;;
        -a | --add) _ak_modules_profile_add $2; exit;;
        -s | --set) _ak_modules_profile_propset $2 "$3"; exit;;
        -g | --get) _ak_modules_profile_propget $2; exit;;
        * ) _ak_usage;;
    esac
else _ak_usage
fi