#!/bin/bash
# Copyright 2019-2024 The Hush developers
# Released under the GPLv3
VERSION=1.0.18

# First thing to do is see if libsodium.a exists in the res folder. If it does, then there's nothing to do
if [ -f res/libsodium.a ]; then
    echo "libsodium $VERSION is already built! Nothing to do"
    exit 0
fi

echo "Building libsodium $VERSION"

if ! command -v curl &> /dev/null
then
    echo "curl could not be found. Please install it and try again."
    exit 1
fi

# Go into the lib sodium directory
cd res/libsodium
if [ ! -f libsodium-1.0.18.tar.gz ]; then
    echo "Downloading libsodium $VERSION"
    curl -L https://git.hush.is/attachments/0d9f589e-a9f9-4ddb-acaa-0f1b423b32eb -o libsodium-1.0.18.tar.gz
fi

if [ ! -f libsodium-1.0.18.tar.gz ]; then
    echo "Unable to download libsodium $VERSION !!! Aborting"
    exit 1
fi

# Sha256 checksum for ibsodium-1.0.18.tar.gz
EXPECTED_CHECKSUM="6f504490b342a4f8a4c4a02fc9b866cbef8622d5df4e5452b46be121e46636c1"

# Check if the checksum matchs
echo "Checking SHA256 Checksum for libsodium $VERSION"
ACTUAL_CHECKSUM=$(sha256sum libsodium-1.0.18.tar.gz | awk '{ print $1 }')

if [ "$EXPECTED_CHECKSUM" != "$ACTUAL_CHECKSUM" ]; then
    echo "Error: The checksum of libsodium does not match the expected checksum. "
    exit 1
fi

if [ ! -d libsodium-1.0.18 ]; then
    echo "Unpacking libsodium $VERSION"
    tar xf libsodium-1.0.18.tar.gz
fi

if [ ! -d libsodium-1.0.18 ]; then
    echo "Unable to unpack libsodium $VERSION !!! Aborting"
    exit 1
fi

# Now build it
cd libsodium-1.0.18
echo "Configuring libsodium $VERSION"
LIBS="" ./configure
make clean

echo "Compiling libsodium $VERSION"
if [[ "$OSTYPE" == "darwin"* ]]; then
    make CFLAGS="-mmacosx-version-min=10.11" CPPFLAGS="-mmacosx-version-min=10.11" -j8 # "$@"
else
    make -j8 # "$@"
fi
cd ..

if [ ! -e libsodium-1.0.18/src/libsodium/.libs/libsodium.a ]; then
    echo "Unable to compile libsodium $VERSION !!! Aborting"
    exit 1
fi

# copy the library to the parents's res/ folder
cp libsodium-1.0.18/src/libsodium/.libs/libsodium.a ../