#!/bin/bash

# Determine which is the default package manager
APT=$(which apt)
PACMAN=$(which pacman)
DNF=$(which dnf)
YUM=$(which yum)
ZYPPER=$(which zypper)

# install python3 and pip3 if not exist
if [ ${#APT} -gt 0 ]; then
    sudo apt-get install python3
    sudo apt-get install python3-pip
elif [ ${#PACMAN} -gt 0 ]; then
    sudo pacman -S python3
    sudo pacman -S python3-pip
elif [ ${#DNF} -gt 0 ]; then
    sudo dnf install python3
    sudo dnf install python3-pip
elif [ ${#YUM} -gt 0 ]; then
    sudo yum install python3
    sudo yum install python3-pip
elif [ ${#ZYPPER} -gt 0 ]; then
    sudo zypper install python3
    sudo zypper install python3-pip
else
    echo "Unknown package manager. Download one of the following:"
    echo "  apt, pacman, dnf, yum or zypper"
    echo ""
    echo "or use README.md for instructions."
    exit 1
fi

    
# install the all the necessary packages and requirements
echo ''
echo ''
while true; do
    echo 'Do you want dependencies to be installed globally (or locally) [Y/n]?'
    read ans
    if [[ ${#ans} -eq 0 || $ans = "Y" || $ans = "y" ]]; then
        sudo pip3 install --upgrade setuptools
        sudo pip3 install -r requirements.txt
    elif [[ $ans = "N" || $ans = "n" ]]; then
        sudo pip3 install --user --upgrade setuptools
        sudo pip3 install --user -r requirements.txt
    fi

    [[ ${#ans} -eq 0 || $ans = "Y" || $ans = "y" || $ans = "N" || $ans = "n" ]] && break;
done