#!/bin/bash

# Install prerequisites
dpkg -s qtbase5-dev
QTBASE_NOT_INSTALLED=$?
dpkg -s qtchooser
QTCHOOSER_NOT_INSTALLED=$?
dpkg -s qt5-qmake
QMAKE_NOT_INSTALLED=$?
dpkg -s qtbase5-dev-tools
QTDEV_NOT_INSTALLED=$?
dpkg -s libusb-1.0-0-dev
LIBUSB_NOT_INSTALLED=$?
dpkg -s libfftw3-dev
FFTW_NOT_INSTALLED=$?

# We don't want to bail if one of the first 4 lines returns error.  That's what they're meant to do!
set -e

if [ $QTBASE_NOT_INSTALLED != 0 ] || [ $QTCHOOSER_NOT_INSTALLED != 0 ] || [ $QMAKE_NOT_INSTALLED != 0 ] || [ $QTDEV_NOT_INSTALLED != 0 ] || [ $LIBUSB_NOT_INSTALLED != 0 ] || [ $FFTW_NOT_INSTALLED != 0 ]; then
    sudo apt-get update
    sudo apt-get install -y qtbase5-dev
    sudo apt-get install -y qtchooser
    sudo apt-get install -y qt5-qmake
    sudo apt-get install -y qtbase5-dev-tools
    sudo apt-get install -y libusb-1.0-0-dev
    sudo apt-get install -y libfftw3-dev
else
    echo "Prerequesites are already installed.  Skipping step."
fi

# Move to /tmp so we don't leave junk in the user's folders
cd /tmp

# Install gcc-8.10, which is modern C++ friendly
# see https://solarianprogrammer.com/2017/12/08/raspberry-pi-raspbian-install-gcc-compile-cpp-17-programs/
if [ -d "/usr/local/gcc-8.1.0-labrador" ]; then
    echo "gcc-8.1.0-labrador is already installed.  Skipping step."
else
    rm -rf raspberry-pi-gcc-binary
    git clone --depth 1 https://github.com/EspoTek/raspberry-pi-gcc-binary
    cd ./raspberry-pi-gcc-binary
    tar xf gcc-8.1.0.tar.bz2
    sudo mv gcc-8.1.0 /usr/local/gcc-8.1.0-labrador
fi

# Clone the latest version of Labrador
rm -rf labrador
git clone --depth 1 https://github.com/espotek/labrador

# Set PATH so that make can find gcc-8.10
export PATH=/usr/local/gcc-8.1.0-labrador/bin:$PATH

# Set QT_SELECT so qtchooser picks the right version
export QT_SELECT=qt5

# Build labrador
cd labrador/Desktop_Interface
qmake
make CXX=g++-8.1.0 CC=gcc-8.1.0
sudo make install

# Cleanup
rm -rf raspberry-pi-gcc-binary
rm -rf labrador

echo "Labrador installation success!"
echo "To run the software, enter \"labrador\" into the terminal or open the app from the \"Education\" menu."