#!/bin/bash
set -u

IMAGE_NAME="zyxel-openwrt-builder"
CONTAINER_NAME="openwrt-builder-container"
OPENWRT_DIR="/home/builder/openwrt"
FIRMWARE_PATH="${OPENWRT_DIR}/bin/brcm963xx-glibc/zyxel/ras.bin"

echo "Building Docker image ${IMAGE_NAME}..."
docker build --platform linux/amd64 -t "${IMAGE_NAME}" .

docker rm -f "${CONTAINER_NAME}" >/dev/null 2>&1 || true

docker run --platform linux/amd64 --cpus="1" --name "${CONTAINER_NAME}" \
    --dns 1.1.1.1 --dns 8.8.8.8 \
    -e TERM=vt100 -e PROJECT=brcm963xx \
    "${IMAGE_NAME}" /bin/bash -c \
    "cd ${OPENWRT_DIR} && \
     cp -f configs/vmg8825_b50b.defconfig .config && \
     make PROJECT=brcm963xx defconfig && \
     make PROJECT=brcm963xx clean && \
     make PROJECT=brcm963xx -j1 V=sc"
BUILD_RC=$?

docker cp "${CONTAINER_NAME}:${OPENWRT_DIR}/.config" ./.config-build || true

if [ ${BUILD_RC} -ne 0 ]; then
    echo "ERROR: build failed (exit ${BUILD_RC})."
    echo "Inspect: docker start -ai ${CONTAINER_NAME}"
    exit ${BUILD_RC}
fi

mkdir -p ./build
if docker cp "${CONTAINER_NAME}:${FIRMWARE_PATH}" ./build/ras.bin 2>/dev/null; then
    echo "Firmware copied to ./build/ras.bin"
else
    echo "ERROR: firmware not found at ${FIRMWARE_PATH}"
    exit 1
fi

docker rm "${CONTAINER_NAME}"