#!/bin/bash

# board
BOARD=igkboard-rk3576

# openwrt branch
BRANCH=openwrt-25.12

#openwrt url
GITURL=https://github.com/openwrt/openwrt.git

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

# binaries build prefix install path
PRFX_PATH=$PRJ_PATH/install

# binaries finally install path if needed
#INST_PATH=/tftp

# config file path
CONF_FILE=$PRJ_PATH/config.json

# 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"
}

# decompress a packet to destination path
function do_unpack()
{
    tarball=$1
    dstpath=`pwd`

    if [[ $# == 2 ]] ; then
        dstpath=$2
    fi

    pr_info "decompress $tarball => $dstpath"

    mkdir -p $dstpath
    case $tarball in
        *.tar.gz)
            tar -xzf $tarball -C $dstpath
            ;;

        *.tar.bz2)
            tar -xjf $tarball -C $dstpath
            ;;

        *.tar.xz)
            tar -xJf $tarball -C $dstpath
            ;;

        *.tar.zst)
            tar -I zstd -xf $tarball -C $dstpath
            ;;

        *.tar)
            tar -xf $tarball -C $dstpath
            ;;

        *.zip)
            unzip -qo $tarball -d $dstpath
            ;;

        *)
            pr_error "decompress Unsupport packet: $tarball"
            return 1;
            ;;
    esac
}

# parser configure file and export environment variable
function do_export()
{
    export SDK=$BRANCH
}

function do_fetch()
{
    cd $PRJ_PATH

    if [ -f $SDK/Makefile ] ; then
        pr_info "$SDK source code fetched already"
        return 0;
    fi

    pr_info "start fetch source code"
    git clone $GITURL -b $BRANCH $SDK --depth=1

    cd $SDK && pwd

    sed -i 's#https://git.openwrt.org/feed/#https://github.com/openwrt/#g' feeds.conf.default
    sed -i 's#https://git.openwrt.org/project/#https://github.com/openwrt/#g' feeds.conf.default
    sed -i 's#https://git.openwrt.org/#https://github.com/openwrt/#g' feeds.conf.default

    pr_info "start feeds update and install "
    ./scripts/feeds update -a
    ./scripts/feeds install -a

}

function do_patch()
{
    PATCH_FILE=$PRJ_PATH/patch/${BRANCH}-${BOARD}.patch

    cd $PRJ_PATH/$SDK

    if [ ! -f patched.tag ] ; then
        pr_info "do patch $(basename $PATCH_FILE)"
        patch -p1 < $PATCH_FILE
    fi
}

function do_build()
{
    DEF_CONFIG=.${BOARD}.defconfig

    IMAGE_PATH=bin/targets/*/*/

    cd $PRJ_PATH/$SDK

    pr_info "make defconfig: $DEF_CONFIG"
    cp $DEF_CONFIG .config

    echo ""
    pr_warn "startu build..."
    #make V=s -j$(nproc)
    make -j1

    echo ""
    pr_warn "output images path: $IMAGE_PATH"
    ls $IMAGE_PATH
    echo ""
}

function do_clean()
{
    cd $WKSP/SDK && pwd

    pr_warn "start clean"
    make clean
}

#+-------------------------+
#| Shell script body entry |
#+-------------------------+

do_export

if [[ $# == 1 && $1 == -c ]] ;then
    do_clean
    exit;
fi

pr_warn "start build $SDK SDK for ${BOARD}"

do_fetch

do_patch

do_build