#!/bin/bash

echo "Caching password..."
sudo -K
sudo true;

if hash brew 2>/dev/null; then
	echo "Homebrew is already installed!"
else
	echo "Installing Homebrew..."
	/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
fi

brew install bash-completion
brew install cmake # gporca
brew install xerces-c #gporca
brew install libyaml # gpfdist
brew install libevent # gpfdist
brew install apr # gpfdist
brew install apr-util # gpfdist
brew install zstd
brew install libxml2
brew install pkg-config
brew install perl
brew install python3

brew link --force apr
brew link --force apr-util
brew link --force libevent
brew link --force libxml2
brew link --force libyaml

# Due to recent update on OS net-tools package. Mac doesn't have support for ss and ip by default.
# Hence as a workaround installing iproute2mac for ip support and creating soft link for ss support
brew install iproute2mac
sudo ln -s /usr/sbin/netstat /usr/local/bin/ss

echo 127.0.0.1$'\t'$(hostname) | sudo tee -a /etc/hosts

# OS settings
sudo sysctl -w kern.sysv.shmmax=2147483648
sudo sysctl -w kern.sysv.shmmin=1
sudo sysctl -w kern.sysv.shmmni=64
sudo sysctl -w kern.sysv.shmseg=16
sudo sysctl -w kern.sysv.shmall=524288
sudo sysctl -w net.inet.tcp.msl=60

sudo sysctl -w net.local.dgram.recvspace=262144
sudo sysctl -w net.local.dgram.maxdgram=16384
sudo sysctl -w kern.maxfiles=131072
sudo sysctl -w kern.maxfilesperproc=131072
sudo sysctl -w net.inet.tcp.sendspace=262144
sudo sysctl -w net.inet.tcp.recvspace=262144
sudo sysctl -w kern.ipc.maxsockbuf=8388608

sudo tee -a /etc/sysctl.conf << EOF
kern.sysv.shmmax=2147483648
kern.sysv.shmmin=1
kern.sysv.shmmni=64
kern.sysv.shmseg=16
kern.sysv.shmall=524288
net.inet.tcp.msl=60

net.local.dgram.recvspace=262144
net.local.dgram.maxdgram=16384
kern.maxfiles=131072
kern.maxfilesperproc=131072
net.inet.tcp.sendspace=262144
net.inet.tcp.recvspace=262144
kern.ipc.maxsockbuf=8388608
EOF

# Create GPDB destination directory
sudo mkdir /usr/local/gpdb
sudo chown $USER:admin /usr/local/gpdb

# Configure
cat >> ~/.bashrc << EOF
ulimit -n 65536 65536  # Increases the number of open files
export PGHOST="$(hostname)"
export LC_CTYPE="en_US.UTF-8"

eval "$(/opt/homebrew/bin/brew shellenv)"
export PATH="`brew --prefix`/opt/apr/bin:`brew --prefix`/opt/apr-util/bin:`brew --prefix`/opt/libxml2/bin:$PATH"
export LDFLAGS="-L`brew --prefix`/opt/zstd/lib -L`brew --prefix`/opt/libevent/lib -L`brew --prefix`/opt/openssl/lib -L`brew --prefix`/opt/libxml2/lib -L`brew --prefix`/opt/libyaml/lib"
export CPPFLAGS="-I`brew --prefix`/opt/zstd/include -I`brew --prefix`/opt/libevent/include -I`brew --prefix`/opt/openssl/include -I`brew --prefix`/opt/libxml2/include -I`brew --prefix`/opt/libyaml/include"
EOF
source ~/.bashrc

cat << EOF

================

Please source greenplum_path.sh after compiling database, then

pip3 install --user -r python-dependencies.txt

EOF