#!/bin/bash

INFO="\e[96m"
SUCCESS="\e[92m"
YELLOW="\e[33m"
BOLD="\e[1m"
RESET="\e[0m"
DOTTED="\e[5m"
NGINX_SHARE="./usr/share/nginx/html"
LETSENCRYPT_DIR="/opt/letsencrypt"

function is_installed() {
    # set to 1 initially
    local return_=1
    # set to 0 if not found
    type $1 >/dev/null 2>&1 || { local return_=0; }
    # return
    echo "$return_"
}

function is_yes() {
    local return_=1
    if [[ "$1" == "${1#[Yy]}" && ! -z "$1" ]]; then
        local return_=0
    else
        local return_=1
    fi
    echo "$return_"
}

function install_vps() {
    read -r -p "$(echo -e $BOLD$YELLOW"Do you want to start the installation process $INFO[Y/n]: "$RESET)" start

    if [ "$(is_yes $start)" == "1" ]; then
        echo -e $INFO"Updating VPS..."
        apt-get update
        echo -e "Install [Nodejs|Server|Nginx|Redis|Postgreshql] - Ubuntu System"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install nginx $INFO[Y/n]: "$RESET)" nginx

    if [[ "$(is_installed nginx)" == "0" && "$(is_yes $nginx)" == "1" ]]; then
        echo -e $INFO"Installing nginx..."
        apt-get install nginx -y
        echo -e "Start nginx..."
        systemctl start nginx
        echo -e "Auto enable nginx when server reboot..."$RESET
        systemctl enable nginx
        echo -e $SUCCESS"Nginx install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install make $INFO[Y/n]: "$RESET)" make
    if [[ "$(is_installed make)" == "0" && "$(is_yes $make)" == "1" ]]; then
        echo -e $INFO"Installing build-essential..."$RESET
        apt-get install build-essential -y
        echo -e $SUCCESS"Make install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install nodejs-v13 $INFO[Y/n]: "$RESET)" nodejs
    if [[ "$(is_installed node)" == "0" && "$(is_yes $nodejs)" == "1" ]]; then
        echo -e $INFO"Download nodejs 13..."
        curl -sL https://deb.nodesource.com/setup_13.x | sudo -E bash -
        echo -e "Installing nodejs..."$RESET
        apt-get install nodejs -y
        node --version
        echo -e $SUCCESS"Nodejs install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install git $INFO[Y/n]: "$RESET)" git
    if [[ "$(is_installed git)" == "0" && "$(is_yes $git)" == "1" ]]; then
        echo -e $INFO"Installing git..."$RESET
        apt-get install git -y
        echo -e $SUCCESS"Git install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install pm2 $INFO[Y/n] "$RESET)" pm2
    if [[ "$(is_installed pm2)" == "0" && "$(is_yes $pm2)" == "1" ]]; then
        echo -e $INFO"Installing pm2..."$RESET
        npm i -g pm2
        echo -e $SUCCESS"PM2 install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install redis $INFO[Y/n] "$RESET)" redis
    if [[ "$(is_installed redis-cli)" == "0" && "$(is_yes $redis)" == "1" ]]; then
        echo -e $INFO"Installing redis..."$RESET
        apt-get install redis-server
        echo -e $SUCCESS"Redis install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install postgresql $INFO[Y/n] "$RESET)" postgresql
    if [[ "$(is_installed postgresql)" == "0" && "$(is_yes $postgresql)" == "1" ]]; then
        echo -e $INFO"Installing postgresql..."$RESET
        apt-get install postgresql -y
        echo -e $SUCCESS"PostGresql install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want install postgresql contrib $INFO[Y/n] "$RESET)" postgresql_contrib
    if [[ "$(is_installed postgresql-contrib)" == "0" && "$(is_yes $postgresql_contrib)" == "1" ]]; then
        echo -e $INFO"Installing postgresql-contrib"$RESET
        apt-get install postgresql-contrib -y
        echo -e $SUCCESS"PostGresql contrib install sucess"$RESET
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Install letsencrypt SSL : "$RESET)" ssl
    if [ "$(is_yes $ssl)" == "1" ]; then
        if [ ! -d "$LETSENCRYPT_DIR" ]; then
            git clone https://github.com/letsencrypt/letsencrypt $LETSENCRYPT_DIR
        fi
    fi

    echo -e $BOLD$SUCCESS"Install VPS success"$RESET
}

function setup_project() {
    read -r -p "$(echo -e $BOLD$YELLOW"Do you want to start setup project $INFO[Y/n]: "$RESET)" setup
    if [ "$(is_yes $setup)" == "1" ]; then
        echo -e $INFO"hihi"$RESET
        read -r -p "$(echo -e $BOLD$YELLOW"Git repo: "$RESET)" repo
        cd $NGINX_SHARE && git clone $repo
    fi

    read -r -p "$(echo -e $BOLD$YELLOW"Do you want setup domain ssl $INFO[Y/n]: "$RESET)" setup_ssl
    if [ "$(is_yes $setup_ssl)" == "1" ]; then
        /opt/letsencrypt/certbot-auto certonly --standalone
    fi
}

install_vps
setup_project