init_env_setup.sh

#!/usr/bin/env bash

#........................Helper Functions......................#
function find_wsgi_application() {
  val=$(find "$proj_loc" \( -name 'settings.py' -or -name 'local.py' -or -name 'development.py' -or -name 'production.py' \))
  val1=$(cat $val | grep WSGI_APPLICATION | cut -d "=" -f 2)
  val2=$(echo $val1 | cut -b 1-)
  val3=("$val2")
  val4=$(echo $val3 | cut -c 2- | sed -e "s/.application'//g")":application"
  echo "$val4"
}

user_name=$(whoami)
read -p "Project Name : " proj_name
read -p "Project repository ( git@github.com:Shrek53/misc-scripts.git ): " proj_git
read -p "Domain/IP (example.com): " domain

echo "=========================Initiating environment setup============================="
sudo apt-get update
sudo apt-get install nginx
sudo apt-get install git
sudo apt-get install python-pip
sudo pip install --upgrade pip
sudo pip install gunicorn
sudo pip install virtualenv

mkdir -p ~/projects
cd ~/projects || exit

echo "========= Did you add your ssh public key to the git repository ? (Y/N) =========="
read user_response
if [[ $user_response == 'Y' || $user_response == 'y' ]]; then
  git clone "$proj_git" "$proj_name"
  cd ~/projects/"$proj_name" || exit
  proj_loc=$(pwd)
  cd ..
else
  echo "========== Please add your ssh public key to the git repository ============"
  sleep 1
  exit
fi

cd ~ || exit
sudo apt-get install make build-essential libssl-dev zlib1g-dev libbz2-dev libreadline-dev libsqlite3-dev
curl -L https://raw.githubusercontent.com/pyenv/pyenv-installer/master/bin/pyenv-installer | bash
export PATH="/home/$user_name/.pyenv/bin:$PATH"
eval "$(pyenv init -)"
eval "$(pyenv virtualenv-init -)"
pyenv install 3.6.9

if [ ! -d "venv" ]; then
  mkdir -p ~/venv
fi

cd ~/venv || exit
venv_name=venv_$proj_name
pyenv local 3.6.9
if [ ! -d $venv_name ]; then
  virtualenv -p python3.6 ~/venv/$venv_name
fi

cd ~/venv/"$venv_name" || exit
venv_loc=$(pwd)
echo $venv_loc
source "$venv_loc"/bin/activate
pip install gunicorn
pip install -r "$proj_loc"/requirements.txt
deactivate
cd ~ || exit

echo "==================== Create a service for your project ==================="
echo "Enter service name"
read service_name
echo "Enter number of workers"
read number_of_workers

##-----------------------------creating service file-----------------------------##
wsgi_application=$(find_wsgi_application "$proj_loc")
service_file_name=/etc/systemd/system/$service_name'.service'
sudo touch $service_file_name

sudo echo "
[Unit]
Description = $service_name
After = network.target

[Service]
Restart=on-failure
User = $user_name
Group = www-data
WorkingDirectory = $proj_loc
Environment=\"PATH=$venv_loc/bin\"
ExecStart = $venv_loc/bin/gunicorn --workers $number_of_workers --bind unix:$proj_loc/server.sock $wsgi_application --timeout 180

[Install]
WantedBy = multi-user.target
" | sudo tee -a $service_file_name

##---------------------------creating nginx config file-------------------------##

nginx_config_file_name=/etc/nginx/conf.d/$service_name'.conf'
sudo touch $nginx_config_file_name

sudo echo "
server {
    listen 80;
    server_name $domain;

    location ^~ /static/  {
        root $proj_loc;
    }

    location = /favico.ico  {
        root $proj_loc/favico.ico;
    }
   location / {
        include proxy_params;
        proxy_pass http://unix:$proj_loc/server.sock;
    }
}
" | sudo tee -a $nginx_config_file_name

echo "==========================ALL SET========================"