#!/bin/bash
# Description: This shell script used to generate patch file
#      Author: guowenxue <guowenxue@gmail.com>
#     Version: 1.0.0

# this project absolute path
#PRJ_PATH=$(cd $(dirname "${BASH_SOURCE[0]}")/.. && pwd)
PRJ_PATH=$(pwd)

# shell script will exit once get command error
#set -e

#+-------------------------+
#| Shell script functions  |
#+-------------------------+

function pr_error() {
    echo -e "\033[40;31m $1 \033[0m"
}

function pr_warn() {
    echo -e "\033[40;33m $1 \033[0m"
}

function pr_info() {
    echo -e "\033[40;32m $1 \033[0m"
}

# parser configure file and export environment variable
function do_export()
{
    export SDKVER=$(basename $1)
    export BOARD=$(basename $2)
}

function gen_patch()
{
    SRC_PATH=$1
    PATCH_NAME=${SDKVER}-${BOARD}.patch

    if [ ! -d $SRC_FPATH ] ;  then
        pr_error "\nERROR: source code $SRC_FPATH not exist, exit now\n\n"
        exit;
    fi

    pr_info "generate patch file for $SRC_PATH"
    cd $SRC_PATH

    pwd

    if [ ! -f patched.tag ] ; then
        touch patched.tag
    fi

    git add * 2> /dev/null
    git add .igkboard-*.defconfig 2> /dev/null
    git add -f files 2> /dev/null

    git diff --cached > $PRJ_PATH/$PATCH_NAME
}

function do_patch()
{
    gen_patch buildroot
}

if [ $# != 2 ] ; then
    pr_info "$0 usage example:"
    pr_info "$0 openwrt-25.12 igkboard-rk3576"
    exit
fi

do_export $1 $2

gen_patch $1