# Copyright 2024 XMOS LIMITED.
# This Software is subject to the terms of the XMOS Public Licence: Version 1.

import contextlib
import os
import shutil
import tempfile

MIDI_TEST_CONFIGS = ["xs2", "xs3"]
MIDI_RATE = 31250

@contextlib.contextmanager
def cd(newdir, cleanup=lambda: True):
    prevdir = os.getcwd()
    os.chdir(os.path.expanduser(newdir))
    try:
        yield
    finally:
        os.chdir(prevdir)
        cleanup()

@contextlib.contextmanager
def tempdir():
    dirpath = tempfile.mkdtemp(dir=os.getcwd())
    def cleanup():
        shutil.rmtree(dirpath)
    with cd(dirpath, cleanup):
        yield dirpath

class midi_expect_tx:
    def __init(self):
        pass

    def expect(self, commands):
        expected = ""
        for command in commands:
            while len(command) < 3:
                command.append(0)
            expected += "uart_tx_checker: " + " ".join([f"0x{byte:02x}" for byte in command]) + "\n"

        return expected + "\n"

class midi_expect_rx:
    def __init(self):
        pass

    def expect(self, commands):
        expected = ""
        for command in commands:
            while len(command) < 3:
                command.append(0)
            expected += "dut_midi_rx: " + " ".join([f"{byte}" for byte in command]) + "\n"

        return expected + "\n"

midi_tx_file = "midi_tx_cmds.txt"
midi_rx_file = "midi_rx_cmds.txt"

def create_midi_tx_file(commands=None):
    with open(midi_tx_file, "wt") as mt:
        if commands is None:
            return
        for command in commands:
            while len(command) < 3:
                command.append(0)
            text = " ".join([str(byte) for byte in command]) + "\n"
            mt.write(text)

def create_midi_rx_file(num_commands=0):
    with open(midi_rx_file, "wt") as mr:
        text = f"{num_commands}\n"
        mr.write(text)



# Test/dev only
if __name__ == "__main__":
    with tempdir() as td:
        print(td)
        create_midi_tx_file()
        input("PRESS ENTER TO CONTINUE")