#!/bin/bash

# Upgrade the system and install go
sudo apt update
sudo apt upgrade -y
# Install essential
sudo apt install build-essential
sudo apt install gcc git make -y
sudo snap install --classic go
sudo mkdir -p /opt/go/bin

# Export environment variables
export GOPATH=$HOME/go
export PATH=$GOPATH/bin:$PATH

# Create a system user for running the service
sudo useradd -m -d /opt/gaiad --system --shell /usr/sbin/nologin gaiad
sudo -u gaiad mkdir -p /opt/gaiad/config

# Get Cosmos SDK and build binaries
cd ~ && git clone -b v2.0.0-rc1 https://github.com/cosmos/gaia
cd gaia && make install

# Copy the binaries to /opt/go/bin/
sudo cp $HOME/go/bin/gaia* /opt/go/bin/

# Create systemd unit file
echo "[Unit]
Description=Cosmos Gaia Node
After=network-online.target
[Service]
User=gaiad
ExecStart=/opt/go/bin/gaiad start --home=/opt/gaiad/
Restart=always
RestartSec=3
LimitNOFILE=4096
[Install]
WantedBy=multi-user.target" > gaiad.service

sudo mv gaiad.service /etc/systemd/system/
sudo systemctl enable gaiad.service

# Create the config skeleton as user gaiad
sudo -u gaiad /opt/go/bin/gaiad unsafe-reset-all --home=/opt/gaiad

# ulimit 
ulimit -n 65535

echo "wget genesis.json file from https://github.com/cosmos/testnets/blob/master/gaia-9002/genesis.json"
echo "You can copy the genesis.json file to /opt/gaiad/config and edit the /opt/gaiad/config/config.toml."
echo "Run 'sudo service gaiad start' to start the service."
echo "Run 'Output log by running `journalctl -u gaiad -f`"