#!/bin/bash
# SPDX-License-Identifier: LGPL-3.0-or-later
# See Notices.txt for copyright information

set -e

function usage()
{
    echo "usage: $0 <path-to-prjxray-db> <path-to-nextpnr-xilinx-source-code> <path-to-nextpnr-xilinx-output-directory> <device> <device> ..."
    echo
    echo "example: $0 /opt/fayalite-deps/prjxray-db /build/nextpnr-xilinx /opt/fayalite-deps/nextpnr-xilinx xc7a35tcsg324-1 xc7a100tcsg324-1"
}

case "$*" in
    -h*|--help*)
        usage
        exit
        ;;
    "")
        usage >&2
        exit 1
        ;;
esac

prjxray_db_path="$1"
nextpnr_xilinx_source_path="$2"
nextpnr_xilinx_output_path="$3"

if [[ ! ( -d "$prjxray_db_path" && -d "$nextpnr_xilinx_source_path" && ( ! -e "$nextpnr_xilinx_output_path" || -d "$nextpnr_xilinx_output_path" ) ) ]]; then
    echo "invalid/nonexistent paths $prjxray_db_path $nextpnr_xilinx_source_path" >&2
    usage >&2
    exit 1
elif ! python3 --version > /dev/null; then
    echo "can't run python3" >&2
    usage >&2
    exit 1
elif ! bbasm --help > /dev/null; then
    echo "can't run bbasm" >&2
    usage >&2
    exit 1
fi

mkdir -p "$nextpnr_xilinx_output_path/xilinx"

cd "$nextpnr_xilinx_source_path"

for device in "${@:4}"; do
    [[ "$device" =~ ^('xc7'[aksz][0-9]+'t'?)[^t0-9/].*$ ]] || { echo "invalid device: $device" >&2; exit 1; }
    xray_device="${BASH_REMATCH[1]}"
    python3 "$nextpnr_xilinx_source_path/xilinx/python/bbaexport.py" --device "$device" --bba "$nextpnr_xilinx_output_path/xilinx/$xray_device.bba"
    bbasm --l "$nextpnr_xilinx_output_path/xilinx/$xray_device.bba" "$nextpnr_xilinx_output_path/xilinx/$xray_device.bin"
    echo "finished $device"
done