#!/bin/bash

#
# envsetup.sh for buildroot YuzukiSBC
# Copyright (C) 2022 YuzukiTsuru <gloomyghost@gloomyghost.com>. All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#

# WSL SUpport 
if [ $(uname -r | grep -c "WSL1") -eq 1 ];
then 
    # Not support WSL 1
    echo "#### Buildroot-YuzukiSBC Not Support WSL 1 ####"
    exit 1
elif [ $(uname -r | grep -c "WSL2") -eq 1 ];
then 
    echo "Buildroot-YuzukiSBC Now running on WSL2, setting PATH..."
    export PATH="/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib"
fi

FetchUpdate(){
    git fetch origin master:tmp
    if [ $(git diff tmp | grep -c "-") -gt 1 ];
    then
        read -r -p "Update found, Update to Remote? [y/N] " input
        
        case $input in
            [yY][eE][sS]|[yY])
                echo "Now try to merge upstream..."
                git merge tmp
                ;;
        
            [nN][oO]|[nN])
                echo "Cancel update..."         
                ;;
        
            *)
                echo "Invalid input..."
                ;;
        esac
    fi
    # delete the commit
    git branch -d tmp
}

# Fetch latest commit.

read -r -p "Check for repository updates？[y/N] " input
case $input in
    [yY][eE][sS]|[yY])
        echo "Fetching remote repo data..."
        FetchUpdate
        ;;
    
    [nN][oO]|[nN])
        echo "Cancel update check..."        
        ;;
    *)
        echo "Cancel update check..."
        ;;
esac



# configure C compiler
export compiler=$(which gcc)
 
# get version code
MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1)
MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1)
PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -xc - | tail -n 1)

if [ $MAJOR -lt 7 ];
then 
    echo "#### Buildroot-YuzukiSBC Not Support GCC Version less than 7 ####"
    exit 1
elif [ $MAJOR -gt 12 ];
then
    echo "#### Buildroot-YuzukiSBC Not Support GCC Version more than 12 ####"
    exit 1
else
    echo "Your Host GCC Version is $MAJOR.$MINOR.$PATCHLEVEL"
fi

# Add alias 

# Alias
alias lunch="cd buildroot && echo -e \"You're building on Linux\n\nLunch menu... \npick a combo by 'make xxx_defconfig':\nScaning combo...\" && make list-defconfigs"
alias rebuild_kernel="touch ./output/images/a.dtb && rm ./output/images/*.dtb && make linux-rebuild -j8 && make"
alias rebuild_uboot="make uboot-rebuild -j8 && make"
alias wsl_path="export PATH=\"/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/usr/lib/wsl/lib\""
alias sync_kernel="rm -rf output/build/linux* && rm -rf output/build/.linux* && make"

alias mm="make"
alias m="make"
alias mkernel="rebuild_kernel"
alias rkernel="rebuild_kernel"

alias mboot="rebuild_uboot"
alias rboot="rebuild_uboot"

echo "Setup env done! Please run lunch next."