#!/usr/bin/env python3
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"""Builds a simple graph for testing."""

from os import path as osp

import numpy as np
import tvm
from tvm import te
from tvm import relay
from tvm.relay import testing

CWD = osp.dirname(osp.abspath(osp.expanduser(__file__)))


def _get_model(dshape):
    data = relay.var("data", shape=dshape)
    fc = relay.nn.dense(data, relay.var("dense_weight"), units=dshape[-1] * 2)
    fc = relay.nn.bias_add(fc, relay.var("dense_bias"))
    left, right = relay.split(fc, indices_or_sections=2, axis=1)
    one = relay.const(1, dtype="float32")
    return relay.Tuple([(left + one), (right - one), fc])


def main():
    dshape = (32, 16)
    net = _get_model(dshape)
    mod, params = testing.create_workload(net)
    graph, lib, params = relay.build(mod, "llvm", params=params)

    with open(osp.join(CWD, "graph.json"), "w") as f_resnet:
        f_resnet.write(graph)
    with open(osp.join(CWD, "graph.params"), "wb") as f_params:
        f_params.write(relay.save_param_dict(params))


if __name__ == "__main__":
    main()