#!/usr/bin/env sh



#--------[ Detect Bootloader Type ]--------#
if [ -d "/sys/firmware/efi" ]; then
    export ENV_BOOTLOADER="UEFI"
else
    export ENV_BOOTLOADER="BIOS"
fi



#--------[ Detect Motherboard Chipset ]--------#
if [ -d "/sys/devices/virtual/dmi/id" ]; then
    export ENV_MAKE=$(cat /sys/devices/virtual/dmi/id/sys_vendor)
    export ENV_MODEL=$(cat /sys/devices/virtual/dmi/id/product_family)
elif [ -f "/proc/device-tree/model" ]; then
    if [ "$(tr -d '\0' < /proc/device-tree/model | grep -a PineTab)" ]; then
        export ENV_MAKE="Pine64"
        export ENV_MODEL="PineTab"
    elif [ "$(tr -d '\0' < /proc/device-tree/model | grep -a PinePhone)" ]; then
        export ENV_MAKE="Pine64"
        export ENV_MODEL="PinePhonePro"
    elif [ "$(tr -d '\0' < /proc/device-tree/model | grep -a 'Zero W')" ]; then
        export ENV_MAKE="RaspberryPi"
        export ENV_MODEL="RPi-Zero-W"
    elif [ "$(tr -d '\0' < /proc/device-tree/model | grep -a 'Pi 2')" ]; then
        export ENV_MAKE="RaspberryPi"
        export ENV_MODEL="RPi-2"
    elif [ "$(tr -d '\0' < /proc/device-tree/model | grep -a 'Pi 4')" ]; then
        export ENV_MAKE="RaspberryPi"
        export ENV_MODEL="RPi-4"
    else
        export ENV_MAKE="unknown"
        export ENV_MODEL="unknown"
    fi
else
    export ENV_MAKE="unknown"
    export ENV_MODEL="unknown"
fi



#--------[ Detect CPU Architecture ]--------#
export ENV_ARCH="$(uname -m)"



#--------[ Detect CPU Make ]--------#
if [ "$(command -v lscpu)" ]; then
    if [ "$(lscpu | grep Intel)" ]; then
        export ENV_CPU="intel";
    elif [ "$(lscpu | grep AMD)" ]; then
        export ENV_CPU="amd";
    elif [ "$(lscpu | grep ARM)" ]; then
        export ENV_CPU="arm";
    else
        export ENV_CPU="unkown";
    fi
else export ENV_CPU="unkown"; fi



#--------[ Detect GPU Make ]--------#
if [ -d "/proc/bus/pci" ] && [ "$(command -v lspci)" ]; then
    if [ "$(lspci | grep VGA | grep Intel)" ]; then
        export ENV_GPU="intel";
    elif [ "$(lspci | grep VGA | grep GeForce)" ]; then
        export ENV_GPU="nvidia";
    elif [ "$(lspci | grep VGA | grep AMD)" ]; then
        export ENV_GPU="amd";
    else
        export ENV_GPU="unkown"
    fi
else export ENV_GPU="unknown"; fi



#--------[ Memory Amount ]--------#
export ENV_MEMORY=$(free -h | grep 'Mem\|Speicher' | awk '{print $2}')



#--------[ Detect Bluetooth ]--------#
#if [ "$(dmesg | grep -i bluetooth)" ]; then
#    export ENV_BLUETOOTH="true"
#else
#    export ENV_BLUETOOTH="false"
#fi



#--------[ Detect Camera(s) ]--------#
if [ -f /dev/video0 ]; then
    export ENV_CAMERA="true"
else
    export ENV_CAMERA="false"
fi



#--------[ Detect Network Type ]--------#
export ENV_NETWORK="none"
if [ "$(ip addr | grep inet | grep wlan)" ]; then export ENV_NETWORK="wlan"; fi
if [ "$(ip addr | grep inet | grep eth)" ]; then export ENV_NETWORK="eth"; fi
if [ "$(ip addr | grep inet | grep enp)" ]; then export ENV_NETWORK="eth"; fi



#--------[ Detect Virtual/Container Environment ]--------#
if [ ! "$(cat /proc/1/environ 2>&1 | tr -d '\0' | grep -e denied -e Berechtigung )" ]; then
    if [ "$(cat /proc/1/environ | tr -d '\0' | grep lxc)" ]; then
        export ENV_VIRTUAL="lxc"
    elif [ "$ENV_MAKE" == "QEMU" ]; then
        export ENV_VIRTUAL="vm"
    else
        export ENV_VIRTUAL="real"
    fi
else
    export ENV_VIRTUAL="unknown"
fi



#--------[ Detect Live Environment ]--------#
if [ "$(lsblk | grep sr0 | grep run)" ] || [ "$(lsblk | grep loop0 | grep run)" ]; then
    ENV_LIVE="true"
else
    ENV_LIVE="false"
fi



#--------[ Detect Init System ]--------#
if [ "$(command -v systemctl)" ]; then
    export ENV_INIT="systemd";
elif [ "$(command -v rc-service)" ]; then
    export ENV_INIT="openrc";
else
    export ENV_INIT="unknown";
fi



#--------[ Detect Operating System Distro ]--------#
export ENV_DISTRO=$(cat /etc/os-release | grep "^NAME=" | sed 's/^NAME="\(.*\)"$/\1/g')
if [ "$(command -v proxmox-boot-tool)" ]; then export ENV_DISTRO="Proxmox (Debian)"; fi
if [ "$(command -v raspi-config)" ]; then export ENV_DISTRO="RaspberryOS (Debian)"; fi



#--------[ Detect Init System ]--------#
if [ "$(command -v systemctl)" ]; then export ENV_INIT="systemd";
elif [ "$(command -v rc-service)" ]; then export ENV_INIT="openrc";
else export ENV_INIT="unknown";
fi



#--------[ Package Manager ]--------#
if [ "$(command -v paru)" ]; then export ENV_MANAGER="paru";
elif [ "$(command -v pacman)" ]; then export ENV_MANAGER="pacman";
elif [ "$(command -v apt)" ]; then export ENV_MANAGER="apt";
elif [ "$(command -v apk)" ]; then export ENV_MANAGER="apk";
elif [ "$(command -v dnf)" ]; then export ENV_MANAGER="dnf";
elif [ "$(command -v yum)" ]; then export ENV_MANAGER="yum";
else export ENV_MANAGER="unknown"; fi



#--------[ Detect System Hostname ]--------#
export ENV_HOSTNAME=$(uname -n)



#--------[ Dettect Session Login Type ]--------#
if [ "$SSH_TTY" ]; then
    ENV_LOGIN="ssh";
else
    ENV_LOGIN="local";
fi



#--------[ Check Root ]--------#
if [ "$EUID" -ne 0 ]; then
    ENV_ROOT="false"
else
    ENV_ROOT="true"
fi



#--------[ Detect Shell ]--------#
export ENV_SHELL="$(echo $SHELL | sed 's/^\/.*\///g')"



#--------[ Detect System Users ]--------#
export ENV_USERS=$( echo root $(ls /home/))