# Copyright (c) 2018 Foundries.io
# Copyright (c) 2019 Nordic Semiconductor ASA.
# Copyright (c) 2020-2021 Gerson Fernando Budke <nandojve@gmail.com>
#
# SPDX-License-Identifier: Apache-2.0

import argparse
import os
import platform
from unittest.mock import patch, call

import pytest

from runners.bossac import BossacBinaryRunner
from conftest import RC_KERNEL_BIN

if platform.system() != 'Linux':
    pytest.skip("skipping Linux-only bossac tests", allow_module_level=True)

TEST_BOSSAC_PORT = 'test-bossac-serial'
TEST_BOSSAC_SPEED = '1200'
TEST_OFFSET = 1234
TEST_FLASH_ADDRESS = 5678
TEST_BOARD_NAME = "my_board"

EXPECTED_COMMANDS = [
    ['stty', '-F', TEST_BOSSAC_PORT, 'raw', 'ispeed', '115200',
     'ospeed', '115200', 'cs8', '-cstopb', 'ignpar', 'eol', '255',
     'eof', '255'],
    ['bossac', '-p', TEST_BOSSAC_PORT, '-R', '-e', '-w', '-v',
     '-b', RC_KERNEL_BIN],
]

EXPECTED_COMMANDS_WITH_SPEED = [
    ['stty', '-F', TEST_BOSSAC_PORT, 'raw', 'ispeed', TEST_BOSSAC_SPEED,
     'ospeed', TEST_BOSSAC_SPEED, 'cs8', '-cstopb', 'ignpar', 'eol', '255',
     'eof', '255'],
    ['bossac', '-p', TEST_BOSSAC_PORT, '-R', '-e', '-w', '-v',
     '-b', RC_KERNEL_BIN],
]

EXPECTED_COMMANDS_WITH_OFFSET = [
    ['stty', '-F', TEST_BOSSAC_PORT, 'raw', 'ispeed', '115200',
     'ospeed', '115200', 'cs8', '-cstopb', 'ignpar', 'eol', '255',
     'eof', '255'],
    ['bossac', '-p', TEST_BOSSAC_PORT, '-R', '-e', '-w', '-v',
     '-b', RC_KERNEL_BIN, '-o', str(TEST_OFFSET)],
]

EXPECTED_COMMANDS_WITH_FLASH_ADDRESS = [
    [
        'stty', '-F', TEST_BOSSAC_PORT, 'raw', 'ispeed', '115200',
        'ospeed', '115200', 'cs8', '-cstopb', 'ignpar', 'eol', '255',
        'eof', '255'
    ],
    [
        'bossac', '-p', TEST_BOSSAC_PORT, '-R', '-e', '-w', '-v',
        '-b', RC_KERNEL_BIN, '-o', str(TEST_FLASH_ADDRESS),
    ],
]

EXPECTED_COMMANDS_WITH_EXTENDED = [
    [
        'stty', '-F', TEST_BOSSAC_PORT, 'raw', 'ispeed', '1200',
        'ospeed', '1200', 'cs8', '-cstopb', 'ignpar', 'eol', '255',
        'eof', '255'
    ],
    [
        'bossac', '-p', TEST_BOSSAC_PORT, '-R', '-e', '-w', '-v',
        '-b', RC_KERNEL_BIN, '-o', str(TEST_FLASH_ADDRESS),
    ],
]

# SAM-BA ROM without offset
# No code partition Kconfig
# No zephyr,code-partition (defined on DT)
DOTCONFIG_STD = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_FLASH_LOAD_OFFSET=0x162e
'''

# SAM-BA ROM/FLASH with offset
DOTCONFIG_COND1 = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_USE_DT_CODE_PARTITION=y
CONFIG_HAS_FLASH_LOAD_OFFSET=y
CONFIG_FLASH_LOAD_OFFSET=0x162e
'''

# SAM-BA ROM/FLASH without offset
# No code partition Kconfig
DOTCONFIG_COND2 = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_HAS_FLASH_LOAD_OFFSET=y
CONFIG_FLASH_LOAD_OFFSET=0x162e
'''

# SAM-BA Extended Arduino with offset
DOTCONFIG_COND3 = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_USE_DT_CODE_PARTITION=y
CONFIG_BOOTLOADER_BOSSA_ARDUINO=y
CONFIG_HAS_FLASH_LOAD_OFFSET=y
CONFIG_FLASH_LOAD_OFFSET=0x162e
'''

# SAM-BA Extended Adafruit with offset
DOTCONFIG_COND4 = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_USE_DT_CODE_PARTITION=y
CONFIG_BOOTLOADER_BOSSA_ADAFRUIT_UF2=y
CONFIG_HAS_FLASH_LOAD_OFFSET=y
CONFIG_FLASH_LOAD_OFFSET=0x162e
'''

# SAM-BA omit offset
DOTCONFIG_COND5 = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_USE_DT_CODE_PARTITION=y
CONFIG_HAS_FLASH_LOAD_OFFSET=y
CONFIG_FLASH_LOAD_OFFSET=0x0
'''

# SAM-BA Legacy Mode
DOTCONFIG_COND6 = f'''
CONFIG_BOARD="{TEST_BOARD_NAME}"
CONFIG_USE_DT_CODE_PARTITION=y
CONFIG_BOOTLOADER_BOSSA_LEGACY=y
CONFIG_HAS_FLASH_LOAD_OFFSET=y
CONFIG_FLASH_LOAD_OFFSET=0x162e
'''

def adjust_runner_config(runner_config, tmpdir, dotconfig):
    # Adjust a RunnerConfig object, 'runner_config', by
    # replacing its build directory with 'tmpdir' after writing
    # the contents of 'dotconfig' to tmpdir/zephyr/.config.

    zephyr = tmpdir / 'zephyr'
    zephyr.mkdir()
    with open(zephyr / '.config', 'w') as f:
        f.write(dotconfig)
    return runner_config._replace(build_dir=os.fspath(tmpdir))

def require_patch(program):
    assert program in ['bossac', 'stty']

os_path_isfile = os.path.isfile

def os_path_isfile_patch(filename):
    if filename == RC_KERNEL_BIN:
        return True
    return os_path_isfile(filename)

@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=None)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_init(cc, req, get_cod_par, sup, runner_config, tmpdir):
    """
    Test commands using a runner created by constructor.

    Requirements:
	Any SDK

    Configuration:
	ROM bootloader
	CONFIG_USE_DT_CODE_PARTITION=n
	without zephyr,code-partition

    Input:
	none

    Output:
	no --offset
    """
    runner_config = adjust_runner_config(runner_config, tmpdir, DOTCONFIG_STD)
    runner = BossacBinaryRunner(runner_config, port=TEST_BOSSAC_PORT)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=None)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create(cc, req, get_cod_par, sup, runner_config, tmpdir):
    """
    Test commands using a runner created from command line parameters.

    Requirements:
	Any SDK

    Configuration:
	ROM bootloader
	CONFIG_USE_DT_CODE_PARTITION=n
	without zephyr,code-partition

    Input:
	--bossac-port

    Output:
	no --offset
    """
    args = ['--bossac-port', str(TEST_BOSSAC_PORT)]
    parser = argparse.ArgumentParser(allow_abbrev=False)
    BossacBinaryRunner.add_parser(parser)
    arg_namespace = parser.parse_args(args)
    runner_config = adjust_runner_config(runner_config, tmpdir, DOTCONFIG_STD)
    runner = BossacBinaryRunner.create(runner_config, arg_namespace)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=None)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_speed(cc, req, get_cod_par, sup, runner_config, tmpdir):
    """
    Test commands using a runner created from command line parameters.

    Requirements:
	Any SDK

    Configuration:
	ROM bootloader
	CONFIG_USE_DT_CODE_PARTITION=n
	without zephyr,code-partition

    Input:
	--bossac-port
	--speed

    Output:
	no --offset
    """
    args = ['--bossac-port', str(TEST_BOSSAC_PORT),
            '--speed', str(TEST_BOSSAC_SPEED)]
    parser = argparse.ArgumentParser(allow_abbrev=False)
    BossacBinaryRunner.add_parser(parser)
    arg_namespace = parser.parse_args(args)
    runner_config = adjust_runner_config(runner_config, tmpdir, DOTCONFIG_STD)
    runner = BossacBinaryRunner.create(runner_config, arg_namespace)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS_WITH_SPEED]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=True)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_flash_address(cc, req, get_cod_par, sup,
					  runner_config, tmpdir):
    """
    Test command with offset parameter

    Requirements:
	SDK >= 0.12.0

    Configuration:
	Any bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	with zephyr,code-partition

    Input:
	--bossac-port

    Output:
	--offset
    """
    args = [
        '--bossac-port',
        str(TEST_BOSSAC_PORT),
    ]
    parser = argparse.ArgumentParser(allow_abbrev=False)
    BossacBinaryRunner.add_parser(parser)
    arg_namespace = parser.parse_args(args)
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND1)
    runner = BossacBinaryRunner.create(runner_config, arg_namespace)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [
        call(x) for x in EXPECTED_COMMANDS_WITH_FLASH_ADDRESS
    ]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_omit_address(cc, req, bcfg_ini, sup,
                                         runner_config, tmpdir):
    """
    Test command that will omit offset because CONFIG_FLASH_LOAD_OFFSET is 0.
    This case is valid for ROM bootloaders that define image start at 0 and
    define flash partitions, to use the storage capabilities, for instance.

    Requirements:
	Any SDK

    Configuration:
	ROM bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	with zephyr,code-partition

    Input:
	--bossac-port

    Output:
	no --offset
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND5)
    runner = BossacBinaryRunner(runner_config, port=TEST_BOSSAC_PORT)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=True)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_arduino(cc, req, get_cod_par, sup,
				    runner_config, tmpdir):
    """
    Test SAM-BA extended protocol with Arduino variation

    Requirements:
	SDK >= 0.12.0

    Configuration:
	Extended bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	CONFIG_BOOTLOADER_BOSSA_ARDUINO=y
	with zephyr,code-partition

    Input:
	--bossac-port

    Output:
	--offset
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND3)
    runner = BossacBinaryRunner(runner_config, port=TEST_BOSSAC_PORT)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS_WITH_EXTENDED]

@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=True)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_adafruit(cc, req, get_cod_par, sup,
				     runner_config, tmpdir):
    """
    Test SAM-BA extended protocol with Adafruit UF2 variation

    Requirements:
	SDK >= 0.12.0

    Configuration:
	Extended bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	CONFIG_BOOTLOADER_BOSSA_ADAFRUIT_UF2=y
	with zephyr,code-partition

    Input:
	--bossac-port

    Output:
	--offset
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND4)
    runner = BossacBinaryRunner(runner_config, port=TEST_BOSSAC_PORT)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS_WITH_EXTENDED]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=True)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_legacy(cc, req, get_cod_par, sup,
				   runner_config, tmpdir):
    """
    Test SAM-BA legacy protocol

    Requirements:
	Any SDK

    Configuration:
	Extended bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	CONFIG_BOOTLOADER_BOSSA_LEGACY=y
	with zephyr,code-partition

    Input:
	--bossac-port

    Output:
	no --offset
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND6)
    runner = BossacBinaryRunner(runner_config, port=TEST_BOSSAC_PORT)
    with patch('os.path.isfile', side_effect=os_path_isfile_patch):
        runner.run('flash')
    assert cc.call_args_list == [call(x) for x in EXPECTED_COMMANDS]


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_with_oldsdk(cc, req, get_cod_par, sup,
				   runner_config, tmpdir):
    """
    Test old SDK and ask user to upgrade

    Requirements:
	SDK <= 0.12.0

    Configuration:
	Any bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	with zephyr,code-partition

    Input:

    Output:
	Abort
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND1)
    runner = BossacBinaryRunner(runner_config)
    with pytest.raises(RuntimeError) as rinfo:
        with patch('os.path.isfile', side_effect=os_path_isfile_patch):
            runner.run('flash')
    assert str(rinfo.value) == "This version of BOSSA does not support the" \
                               " --offset flag. Please upgrade to a newer" \
                               " Zephyr SDK version >= 0.12.0."


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=None)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_error_missing_dt_info(cc, req, get_cod_par, sup,
					     runner_config, tmpdir):
    """
    Test SAM-BA offset wrong configuration. No chosen code partition.

    Requirements:
	Any SDK

    Configuration:
	Any bootloader
	CONFIG_USE_DT_CODE_PARTITION=y
	with zephyr,code-partition (missing)

    Input:

    Output:
	Abort
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND1)
    runner = BossacBinaryRunner(runner_config)
    with pytest.raises(RuntimeError) as rinfo:
        with patch('os.path.isfile', side_effect=os_path_isfile_patch):
            runner.run('flash')
    assert str(rinfo.value) == "The device tree zephyr,code-partition" \
                               " chosen node must be defined."


@patch('runners.bossac.BossacBinaryRunner.supports',
	return_value=False)
@patch('runners.bossac.BossacBinaryRunner.get_chosen_code_partition_node',
	return_value=True)
@patch('runners.core.ZephyrBinaryRunner.require',
	side_effect=require_patch)
@patch('runners.core.ZephyrBinaryRunner.check_call')
def test_bossac_create_error_missing_kconfig(cc, req, get_cod_par, sup,
					     runner_config, tmpdir):
    """
    Test SAM-BA offset wrong configuration. No CONFIG_USE_DT_CODE_PARTITION
    Kconfig definition.

    Requirements:
	Any SDK

    Configuration:
	Any bootloader
	CONFIG_USE_DT_CODE_PARTITION=y (missing)
	with zephyr,code-partition

    Input:

    Output:
	Abort
    """
    runner_config = adjust_runner_config(runner_config, tmpdir,
                                         DOTCONFIG_COND2)
    runner = BossacBinaryRunner(runner_config)
    with pytest.raises(RuntimeError) as rinfo:
        with patch('os.path.isfile', side_effect=os_path_isfile_patch):
            runner.run('flash')
    assert str(rinfo.value) == \
        "There is no CONFIG_USE_DT_CODE_PARTITION Kconfig defined at " \
        + TEST_BOARD_NAME + "_defconfig file.\n This means that" \
        " zephyr,code-partition device tree node should not be defined." \
        " Check Zephyr SAM-BA documentation."