#!/usr/bin/env bash

# Copyright 2022, FOSS-VG Developers and Contributers
#
# This program is free software: you can redistribute it and/or modify it
# under the terms of the GNU Affero General Public License as published
# by the Free Software Foundation, version 3.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied
# warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
# See the GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# version 3 along with this program.
# If not, see https://www.gnu.org/licenses/agpl-3.0.en.html

source scripts/lib.sh

scripts/clean.sh
scripts/clean_dependencies.sh

set -e # failures are not acceptable here
create_directory dependencies/tmp
scripts/download.sh https://github.com/DuffsDevice/tiny-utf8/archive/refs/tags/v4.4.3.tar.gz dependencies/tmp/tiny-utf8.tar.gz 8e3f61651909c9f3105d3501932a96aa65733127fb6e7cf94cb1b0a2dff42c8f
scripts/download.sh https://github.com/fpagliughi/sockpp/archive/refs/tags/v0.8.1.tar.gz dependencies/tmp/sockpp.tar.gz a8aedff8bd8c1da530b91be650352008fddabc9f1df0d19701d76cbc359c8651
scripts/download.sh https://www.zlib.net/zlib-1.3.1.tar.xz dependencies/tmp/zlib.tar.xz 38ef96b8dfe510d42707d9c781877914792541133e1870841463bfa73f883e32

#TODO: figure out how to cache shaderc
#also TODO: target a specific commit
git clone --branch known-good https://github.com/google/shaderc.git dependencies/tmp/shaderc
#scripts/download.sh https://github.com/google/shaderc/archive/refs/tags/v2023.7.tar.gz dependencies/tmp/shaderc.tar.gz 681e1340726a0bf46bea7e31f10cbfe78e01e4446a35d90fedc2b78d400fcdeb

echo -n ">>> Extracting tiny-utf8... "
gzip -d dependencies/tmp/tiny-utf8.tar.gz
tar -xf dependencies/tmp/tiny-utf8.tar -C dependencies
echo "done"

echo -n ">>> Extracting sockpp... "
gzip -d dependencies/tmp/sockpp.tar.gz
tar -xf dependencies/tmp/sockpp.tar -C dependencies
echo "done"

echo -n ">>> Extracting zlib... "
xz -d dependencies/tmp/zlib.tar.xz
tar -xf dependencies/tmp/zlib.tar -C dependencies
echo "done"

echo ">>> Building sockpp..."
pushd dependencies/sockpp-0.8.1/ >/dev/null 2>&1
if uname -s | tr [:upper:] [:lower:] | grep cygwin >/dev/null; then
    echo "Adding Cygwin workaound for building sockpp."

    #for FILE in "$(find ./ -type f)"; do
    #    sed -i -e 's/_WIN32/PLEASE_DO_NOT_DEFINE_THIS_MACRO/g' $FILE
    #done
    #mv ./include/sockpp/socket.h ./include/sockpp/socket.h_original
    #echo '#include <sys/time.h>
    ##include "socket.h_original"' > ./include/sockpp/socket.h
    sed -i -e 's/SO_REUSEPORT/SO_REUSEADDR/g' ./src/acceptor.cpp

    #CFLAGS="-D_XOPEN_SOURCE=700" CXXFLAGS="-D_XOPEN_SOURCE=700" cmake -Bbuild
    #CFLAGS="-D_XOPEN_SOURCE=700" CXXFLAGS="-D_XOPEN_SOURCE=700" cmake --build build
    cmake -Bbuild .
    cmake --build build
else
    cmake -Bbuild .
    cmake --build build
fi
popd >/dev/null 2>&1
echo ">>> done"

echo ">>> Dealing with shaderc shenanigans..."
pushd dependencies/tmp/shaderc
echo "Getting sources using the provided script..."
./update_shaderc_sources.py
SHADERC_BUILD="build-$(dd if=/dev/urandom bs=1 count=5 2>/dev/null | base32)"
echo "Creating and entering directory $SHADERC_BUILD."
mkdir "$SHADERC_BUILD"
cd "$SHADERC_BUILD"
echo "Running CMake..."
CXXFLAGS="-Wno-error" cmake -GNinja -DCMAKE_BUILD_TYPE=Release ../src/
echo "Running Ninja..."
ninja
popd >/dev/null 2>&1
#if needed copy more relevant files to dependencies/shaderc
echo "Copying binary to dependencies/shaderc/bin..."
mkdir -vp dependencies/shaderc/bin
cp -v "dependencies/tmp/shaderc/$SHADERC_BUILD/glslc/glslc" dependencies/shaderc/bin
echo ">>> done"

echo ">>> Building zlib..."
pushd dependencies/zlib-1.3.1/
./configure
make
popd
echo "done"

echo ">>> Cleaning up..."
remove -f dependencies/tmp