#!/bin/sh
# Bare Metal Alchemist, 2022

############################################# 
#                Gold - ☼                   # 
############################################# 

# One of the principal goals of alchemy is the transmutation of base
# metals into gold. Likewise. one of the purposes of these scripts
# is the transmutation of bare metal into digital gold, AKA bitcoin

# This ingredient is to be used whenever a recipe requires use of
# the Bitcoin ecosystem

# Start with lead...
if [ -z "$LEAD" ]; then
    . ingredients/lead
fi

install_bitcoin() {
    say "${BOLD}Installing Bitcoin Core${RESET}"

    # We're building bitcoin from source here. It might be slower than
    # downloading the pre-built binaries but this is more reliable
    if [ ! -e 🜍/bitcoin-22.0* ]; then
        wget https://bitcoincore.org/bin/bitcoin-core-22.0/bitcoin-22.0.tar.gz -P 🜍/
    fi

    # This still relies on package management though
    case $DISTRO in
        "arch")
            install_if_needed boost autoconf
            ;;
         "debian")
             install_if_needed build-essential libtool autotools-dev automake pkg-config bsdmainutils python3 libssl-dev libevent-dev libboost-system-dev libboost-filesystem-dev libboost-chrono-dev libboost-test-dev libboost-thread-dev libminiupnpc-dev libzmq3-dev libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler git libsqlite3-dev ccache
             ;;
         *)
             say "hol up, I don't know what to do with $DISTRO"
             ask_for nothing "press enter to continue, at your own PERIL!!"
             ;;
     esac

    tar -xvf 🜍/bitcoin-22.0.tar.gz
    sleep 1
    cd bitcoin-22.0
    chmod +x autogen.sh
    ./autogen.sh
    ./configure --without-bdb # Someday, someone will complain here
    make 
    sudo make install
    cd ..
    rm -rf bitcoin-22.0
}

install_lightning() {
    say "${BOLD}Installing lightningd${RESET}"
    git clone https://github.com/ElementsProject/lightning.git ./lightning
    cd lightning
    git checkout v0.10.2
    ./configure

    # The latest version of mistune breaks lightning install
    pip uninstall mistune
    pip install --user mistune==0.8.4
    pip install --user mrkd
    make
    sudo make install
    cd ..
    rm -rf lightning 
}

install_clboss() {
    say "${BOLD}Installing clboss${RESET}"
    git clone https://github.com/ZmnSCPxj/clboss.git ./clboss
    pushd ./clboss
    git checkout 0.11B
    mkdir -p m4
    autoreconf -fi
    ./configure
    make
    sudo make install
    popd
    rm -rf clboss 
}

configure_bitcoin() {
    say "${BOLD}Configuring Bitcoin${RESET}"
    mkdir -p ~/.bitcoin

    if  [ -f $HOME/.bitcoin/bitcoin.conf ]; then
        say "Looks like you already have a ${BLUE}bitcoin.conf${RESET} file!"
        say ""
        cat $HOME/.bitcoin/bitcoin.conf
        say ""
        ask_for btc_reconf "Would you like to reset it? ${BLUE}(y/n)${RESET}: "
        case $btc_reconf in
            "y" | "Y")
                cp resources/sample_bitcoin.conf $HOME/.bitcoin/bitcoin.conf
                say 'Reset bitcoin configuration file'
                ;;
            "n" | "N")
                say "Cool, we'll leave it as is then".
                ;;
        esac
    else
        cp resources/sample_bitcoin.conf $HOME/.bitcoin/bitcoin.conf
        say 'Created default bitcoin config'
    fi

    if [ -n "$BTC_PASS" ]; then
        ask_for new_deets "Would you like to generate new authentication credentials for bitcoin? ${BLUE} (y/n): ${RESET}"
        case $new_deets in
            "y"|"Y")
                AUTHDEETS=$(python3 scripts/rpcauth.py ao)
                AUTHLINE=$(say "$AUTHDEETS" | sed '2q;d' )
                PASSLINE=$(say "$AUTHDEETS" | sed '4q;d' )
                NEWCREDS=1

                remember "BTC_PASS=${PASSLINE}"
                say "${GREEN}New credentials!${RESET}"
                ;;
            "n"|"N")
                say "Skipping re-credentulation"
                ;;
        esac
    else
        AUTHDEETS=$(python3 scripts/rpcauth.py ao)
        AUTHLINE=$(say "$AUTHDEETS" | sed '2q;d' )
        PASSLINE=$(say "$AUTHDEETS" | sed '4q;d' )
        NEWCREDS=1

        remember "BTC_PASS=${PASSLINE}"
    fi

    if [ -n "$NEWCREDS" ]; then
        sed -iE -e "s/BTC_LOGIN|^rpcauth.*/${AUTHLINE}/" $HOME/.bitcoin/bitcoin.conf
    fi
    say ""

    ask_for prune "Next question - would you like to operate bitcoin in pruned mode? \
        This reduces its file size from ~500GB to something more portable ${BLUE}(y/n)${RESET}: "
            say ""
            case $prune in
                y | Y)
                    say "Let's ${GREEN}enable pruning${RESET} to keep the file size down, then."
                    prune_size=0
                    while [ "$prune_size" -lt 550 ]; do
                        ask_for prune_size "How many Mb are you willing to put towards btc? Min 550: "
                    done

                    sed -i "s/txindex=1/prune=${prune_size}/" $HOME/.bitcoin/bitcoin.conf
                    ;;
                *)
                    say "Okay great! We'll leave the bitcoin config it as it is."
                    ;;
            esac
        }

configure_lightning() {
    mkdir -p $HOME/.lightning

    if  [ -f $HOME/.lightning/config ]; then
        say "Looks like you already have a ${BLUE}lightning config${RESET} file!"
        say ""
        cat $HOME/.lightning/config
        say ""
        ask_for ln_reconf "Would you like to reset it? ${BLUE}(y/n)${RESET}: "
        case $ln_reconf in
            "y" | "Y")
                cp resources/sample_lightning_config $HOME/.lightning/config
                say "${GREEN}Reset lightning configuration file${RESET}"
                ;;
            "n" | "N")
                say "Cool, we'll leave it as is then".
                ;;
        esac
    else
        cp resources/sample_lightning_config $HOME/.lightning/config
        say "${GREEN}Created default lightning config${RESET}"
    fi

    say ""
    ask_for clboss_enable "Would you like to use clboss to automatically open lightning channels? ${BLUE}(y/n)${RESET}: "
    case $clboss_enable in
        "y" | "Y")
            if ! check_for clboss; then
                install_clboss
            fi
            sed -i "s/#plugin/plugin/" $HOME/.lightning/config
            sed -i "s/#log/log/" $HOME/.lightning/config
            echo ""
            say "${GREEN}clboss successfully configured!${RESET}"
            ;;
        "n" | "N")
            say ""
            say "Sounds good. You might want to open some channels manually to participate in the network!".
            ;;
    esac
}

bitcoin_is_synced() {
    if [ -f "$HOME/.bitcoin/debug.log" ]; then
        progress=$(tac ~/.bitcoin/debug.log | grep -m1 UpdateTip | awk '{print $10}')
        case $progress in
            *"=1"*)
                say "Bitcoin is synced!"
                return 0
                ;;
            *)
                say "Bitcoin is not synced yet"
                return 1
                ;;
        esac
    else
        say "Not sure where your bitcoin log is!"
        return 2
    fi
}

GOLD=1