#!/bin/bash

# Simple Bash script to compile Bitcoin Core
# on Ubuntu Linux. 

# PREREQUISITES: 
# Example for bitcoin version 23.0
# Download bitcoin-23.0.tar.gz from:
# https://bitcoincore.org/bin/bitcoin-core-23.0
# and unpack in the home directory ($HOME):
# tar -zxvf bitcoin-23.0.tar.gz
#
# Then execute this script in: $HOME/bitcoin-23.0
#
# You'll find bitcoind and bitcoin-cli in $HOME/bitcoin-23.0/src 
# and bitcoin-qt in $HOME/bitcoin-23.0/src/qt
#
# Set variable "do" or "download" to 1 or 0 
# to execute or not execute a specific part of the code

clear

VERSION=$(basename `pwd`) # Should return the current version.

echo "Is $VERSION the right version to compile?"
echo "Sleeping 30 s, press CTRL-C to interupt."
sleep 30

do=1 # install packages (if do = 1)
if [ $do = 1 ]
then
  sudo apt-get install libqt5gui5 libqt5core5a libqt5dbus5 qttools5-dev qttools5-dev-tools libprotobuf-dev protobuf-compiler libboost-all-dev build-essential libtool autotools-dev automake pkg-config libssl-dev libevent-dev bsdmainutils python3 doxygen
fi
do=0

download=1 # download berkeley-db (if download = 1)
do=1 # compile and install berkeley-db (if do = 1)
if [ $do = 1 ]
then
  cd $HOME
  if [ $download = 1 ]
  then
    wget http://download.oracle.com/berkeley-db/db-4.8.30.NC.tar.gz
    echo '12edc0df75bf9abd7f82f821795bcee50f42cb2e5f76a6a281b85732798364ef  db-4.8.30.NC.tar.gz' | sha256sum -c
    tar -xvf db-4.8.30.NC.tar.gz
  fi
  # This error needs to be corrected, see:
  # https://www.fsanmartin.co/compiling-berkeley-db-4-8-30-in-ubuntu-19/
  cd db-4.8.30.NC
  mv dbinc/atomic.h dbinc/atomic.h_orig
  cat dbinc/atomic.h_orig | sed 's/__atomic_compare_exchange/__atomic_compare_exchange_db/' > dbinc/atomic.h

  cd build_unix

  mkdir -p build
  BDB_PREFIX="$HOME/db-4.8.30.NC/build_unix/build/"
  echo BDB $BDB_PREFIX
  ../dist/configure --enable-cxx --disable-shared --with-pic --prefix=$BDB_PREFIX
  make install
fi
do=0

do=1 # compile Bitcoin Core (if do = 1)
if [ $do = 1 ]
then
  # Execute in the Bitcoin directory:
  cd $HOME/$VERSION/

  BDB_PREFIX="$HOME/db-4.8.30.NC/build_unix/build"
  echo BDB $BDB_PREFIX

  ./autogen.sh

  ./configure CPPFLAGS="-I$BDB_PREFIX/include/" LDFLAGS="-L$BDB_PREFIX/lib/" --with-gui

  make # find bitcoind and bitcoin-cli in src, bitcoin-qt in src/qt 
fi
do=0

do=0 # install Bitcoin Core (if do = 1)
if [ $do = 1 ]
then
  cd $HOME/$VERSION/
  sudo make install
fi
do=0

do=1 # test Bitcoin Core (if do = 1)
if [ $do = 1 ]
then
  cd $HOME/$VERSION/src/test
  ./test_bitcoin
  cd $HOME/$VERSION/src/qt/test
  ./test_bitcoin-qt
fi
do=0