#!/bin/bash

PYTHON='python3.5'
INSTALL_DIR='install'
VENV_NAME="venv_py35_pyros"

# String variables

WRONG_DIRECTORY="-Wrong directory : please run this script from the '$INSTALL_DIR' directory"
PRIVATE_DIR_CREATE="-Created 'private' directory"
PYTHON_NOT_INSTALLED="-Cannot find $PYTHON, please install it or configure PYTHON variable in this script"
PYTHON_FOUND="-Found $PYTHON at"
VENV_CREATE="-Creating virtualenv $VENV_NAME... "
VENV_ACTIVATE="-Activating virtual environment... "
DONE="done."
UPGRADE_PIP="-Upgrading pip:"
UPGRADE_WHEEL="-Upgrading wheel:"
INSTALL_PACKAGES="-Installing required packages from install/REQUIREMENTS.txt"
CREATE_DATABASE="-Creating database tables :"
CREATE_SUPERUSER="-Creating database superuser :"
INSTALLATION_FINISHED="-Installation finished"
BAD_SQL_CONFIGURATION="-Migration cannot be applied to the database : check your database configuration, or use sqlite instead"

# Getting python location
PYTHON_DIR=`which $PYTHON`
if [ $? -ne 0 ]; then
    echo $PYTHON_NOT_INSTALLED
    exit
fi
echo $PYTHON_FOUND $PYTHON_DIR

# Getting current path to test if we are in the install directory
CURRENT_PATH=`pwd`
CURRENT_PATH=${CURRENT_PATH##*/}

if [ "$CURRENT_PATH" != $INSTALL_DIR ]; then
    echo $WRONG_DIRECTORY
    exit
fi

# Create a virtual env for Python3
cd ../

mkdir -p private

echo $PRIVATE_DIR_CREATE

cd private/

# create a venv_py35_pyros/ folder inside PYROS/private/
echo $VENV_CREATE
virtualenv $VENV_NAME -p $PYTHON_DIR

# Activate the virtual env
echo $VENV_ACTIVATE
source ./venv_py35_pyros/bin/activate

echo "Python version :"
python -V

# Upgrade pip
echo $UPGRADE_PIP
pip install --upgrade pip

# Upgrade wheel
echo $UPGRADE_WHEEL
pip install --upgrade wheel

# Install the needed python packages
echo $INSTALL_PACKAGES
pip install -r ../install/REQUIREMENTS.txt

# Create the database and a superuser pyros
cd ../src/
echo $CREATE_DATABASE
python manage.py makemigrations
python manage.py migrate

if [ $? -ne 0 ]; then
    echo $BAD_SQL_CONFIGURATION
    exit
fi

echo $CREATE_SUPERUSER
python manage.py createsuperuser

echo $INSTALLATION_FINISHED