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import sys
import pytest
import numpy as np
import os

import tvm.testing
from tvm import te
from tvm import relay
from tvm.relay.backend import Executor, Runtime
from tvm.contrib import utils, ndk
from tvm.contrib.hexagon.build import HexagonLauncher
import tvm.contrib.hexagon.hexagon as hexagon

from ..conftest import requires_rpc_tracker, requires_hexagon_toolchain


@requires_rpc_tracker
@requires_hexagon_toolchain
def test_add(tvm_tracker_host, tvm_tracker_port, android_serial_number):
    dtype = "int8"
    A = tvm.te.placeholder((2,), dtype=dtype)
    B = tvm.te.placeholder((1,), dtype=dtype)
    C = tvm.te.compute(A.shape, lambda i: A[i] + B[0], name="C")
    sched = tvm.te.create_schedule(C.op)

    target_hexagon = tvm.target.hexagon("v68", link_params=True)
    func = tvm.build(
        sched, [A, B, C], tvm.target.Target(target_hexagon, host=target_hexagon), name="add"
    )

    temp = utils.tempdir()
    dso_binary = "test_binary.so"
    dso_binary_path = temp.relpath(dso_binary)
    func.save(dso_binary_path)

    launcher = HexagonLauncher(serial_number=android_serial_number)
    launcher.android_run_rpc(rpc_tracker_host=tvm_tracker_host, rpc_tracker_port=tvm_tracker_port)
    launcher.hexagon_setup()
    remote_kw = {
        "host": tvm_tracker_host,
        "port": tvm_tracker_port,
        "priority": 0,
        "timeout": 60,
    }
    launcher.hexagon_session_setup(remote_kw)
    launcher.upload(dso_binary_path, dso_binary)

    with launcher.session as sess:
        mod = launcher.get_module(dso_binary)
        A_data = tvm.nd.array(np.array([2, 3], dtype=dtype), device=sess.device)
        assert (A_data.numpy() == np.array([2, 3])).all()
        B_data = tvm.nd.array(np.array([4], dtype=dtype), device=sess.device)
        assert (B_data.numpy() == np.array([4])).all()
        C_data = tvm.nd.array(np.array([0, 0], dtype=dtype), device=sess.device)
        assert (C_data.numpy() == np.array([0, 0])).all()

        mod["add"](A_data, B_data, C_data)
        assert (C_data.numpy() == np.array([6, 7])).all()
    launcher.close()


@requires_rpc_tracker
@requires_hexagon_toolchain
def test_add_vtcm(tvm_tracker_host, tvm_tracker_port, android_serial_number):
    dtype = "int8"
    A = tvm.te.placeholder((2,), dtype=dtype)
    B = tvm.te.placeholder((1,), dtype=dtype)
    C = tvm.te.compute(A.shape, lambda i: A[i] + B[0], name="C")
    sched = tvm.te.create_schedule(C.op)

    target_hexagon = tvm.target.hexagon("v68", link_params=True)
    func = tvm.build(
        sched, [A, B, C], tvm.target.Target(target_hexagon, host=target_hexagon), name="add"
    )

    temp = utils.tempdir()
    dso_binary = "test_binary.so"
    dso_binary_path = temp.relpath(dso_binary)
    func.save(dso_binary_path)

    launcher = HexagonLauncher(serial_number=android_serial_number)
    launcher.android_run_rpc(rpc_tracker_host=tvm_tracker_host, rpc_tracker_port=tvm_tracker_port)
    launcher.hexagon_setup()
    remote_kw = {
        "host": tvm_tracker_host,
        "port": tvm_tracker_port,
        "priority": 0,
        "timeout": 60,
    }
    launcher.hexagon_session_setup(remote_kw)
    launcher.upload(dso_binary_path, dso_binary)

    with launcher.session as sess:
        mod = launcher.get_module(dso_binary)
        A_data = tvm.nd.empty(A.shape, A.dtype, sess.device, "global.vtcm")
        A_data.copyfrom(np.array([2, 3]))

        B_data = tvm.nd.empty(B.shape, B.dtype, sess.device, "global.vtcm")
        B_data.copyfrom(np.array([4]))

        C_data = tvm.nd.empty(C.shape, C.dtype, sess.device, "global.vtcm")
        C_data.copyfrom(np.array([0, 0]))

        mod["add"](A_data, B_data, C_data)
        result = C_data.numpy()
        assert (result == np.array([6, 7])).all()
    launcher.close()


class TestMatMul:
    M = tvm.testing.parameter(32)
    N = tvm.testing.parameter(32)
    K = tvm.testing.parameter(32)

    @requires_rpc_tracker
    @requires_hexagon_toolchain
    def test_matmul(self, tvm_tracker_host, tvm_tracker_port, android_serial_number, M, N, K):
        X = te.placeholder((M, K), dtype="float32")
        Y = te.placeholder((K, N), dtype="float32")
        k1 = te.reduce_axis((0, K), name="k1")
        Z = te.compute((M, N), lambda i, j: te.sum(X[i, k1] * Y[k1, j], axis=[k1]))
        schedule = te.create_schedule(Z.op)

        target_hexagon = tvm.target.hexagon("v68", link_params=True)
        func = tvm.build(
            schedule, [X, Y, Z], tvm.target.Target(target_hexagon, host=target_hexagon)
        )

        temp = utils.tempdir()
        dso_binary = "test_binary.so"
        dso_binary_path = temp.relpath(dso_binary)
        func.save(dso_binary_path)

        launcher = HexagonLauncher(serial_number=android_serial_number)
        launcher.android_run_rpc(
            rpc_tracker_host=tvm_tracker_host, rpc_tracker_port=tvm_tracker_port
        )
        launcher.hexagon_setup()
        remote_kw = {
            "host": tvm_tracker_host,
            "port": tvm_tracker_port,
            "priority": 0,
            "timeout": 60,
        }
        launcher.hexagon_session_setup(remote_kw)
        launcher.upload(dso_binary_path, dso_binary)

        x = np.random.uniform(size=[i.value for i in X.shape]).astype(X.dtype)
        y = np.random.uniform(size=[i.value for i in Y.shape]).astype(Y.dtype)
        z = np.zeros([i.value for i in Z.shape], dtype=Z.dtype)

        with launcher.session as sess:
            mod = launcher.get_module(dso_binary)
            xt = tvm.nd.array(x, device=sess.device)
            yt = tvm.nd.array(y, device=sess.device)
            zt = tvm.nd.array(z, device=sess.device)
            mod(xt, yt, zt)

        target_llvm = tvm.target.Target("llvm")
        mod = tvm.build(schedule, [X, Y, Z], tvm.target.Target(target_llvm, host=target_llvm))
        device = tvm.cpu(0)
        xtcpu = tvm.nd.array(x, device)
        ytcpu = tvm.nd.array(y, device)
        ztcpu = tvm.nd.array(z, device)
        mod(xtcpu, ytcpu, ztcpu)
        launcher.close()

        tvm.testing.assert_allclose(zt.numpy(), ztcpu.numpy(), rtol=1e-4)


@requires_rpc_tracker
@requires_hexagon_toolchain
def test_graph_executor(tvm_tracker_host, tvm_tracker_port, android_serial_number):
    dtype = "float32"
    data = relay.var("data", relay.TensorType((1, 64, 64, 3), dtype))
    weight = relay.var("weight", relay.TensorType((5, 5, 3, 8), dtype))
    y = relay.nn.conv2d(
        data,
        weight,
        padding=(2, 2),
        kernel_size=(5, 5),
        data_layout="NHWC",
        kernel_layout="HWIO",
        out_dtype="float32",
    )
    f = relay.Function([data, weight], y)
    relay_mod = tvm.IRModule.from_expr(f)
    relay_mod = relay.transform.InferType()(relay_mod)

    target_hexagon = tvm.target.hexagon("v68")
    runtime = Runtime("cpp")
    executor = Executor("graph")

    temp = utils.tempdir()
    dso_binary = "test_binary.so"
    dso_binary_path = temp.relpath(dso_binary)

    with tvm.transform.PassContext(opt_level=3):
        lowered = tvm.relay.build(
            relay_mod,
            tvm.target.Target(target_hexagon, host=target_hexagon),
            runtime=runtime,
            executor=executor,
        )
        lowered.get_lib().save(dso_binary_path)

    launcher = HexagonLauncher(serial_number=android_serial_number)
    launcher.android_run_rpc(rpc_tracker_host=tvm_tracker_host, rpc_tracker_port=tvm_tracker_port)
    launcher.hexagon_setup()
    remote_kw = {
        "host": tvm_tracker_host,
        "port": tvm_tracker_port,
        "priority": 0,
        "timeout": 60,
    }
    launcher.hexagon_session_setup(remote_kw)
    launcher.upload(dso_binary_path, dso_binary)

    graph_mod = launcher.get_graph_executor(lowered, dso_binary)
    weight_in = np.random.rand(5, 5, 3, 8).astype(dtype=dtype)
    data_in = np.random.rand(1, 64, 64, 3).astype(dtype=dtype)
    graph_mod.set_input(weight=weight_in)
    graph_mod.run(data=data_in)
    hexagon_output = graph_mod.get_output(0).numpy()

    target_llvm = tvm.target.Target("llvm")
    with tvm.transform.PassContext(opt_level=3):
        llvm_lowered = tvm.relay.build(
            relay_mod,
            tvm.target.Target(target_llvm, host=target_llvm),
            runtime=runtime,
            executor=executor,
        )
    llvm_graph_mod = tvm.contrib.graph_executor.GraphModule(llvm_lowered["default"](tvm.cpu(0)))
    llvm_graph_mod.set_input(weight=weight_in)
    llvm_graph_mod.run(data=data_in)
    expected_output = llvm_graph_mod.get_output(0).numpy()
    launcher.close()

    tvm.testing.assert_allclose(hexagon_output, expected_output, rtol=1e-4, atol=1e-5)


if __name__ == "__main__":
    sys.exit(pytest.main(sys.argv))