"""Tests for the openthread component."""

from collections.abc import Callable
from pathlib import Path
from unittest.mock import MagicMock, patch

import pytest

from esphome.components.esp32 import (
    KEY_ESP32,
    KEY_SDKCONFIG_OPTIONS,
    KEY_VARIANT,
    VARIANT_ESP32C6,
)
from esphome.components.openthread import CONFIG_SCHEMA, OT_HEADER_DIR, OT_HEADER_FILE
from esphome.components.openthread.const import OPENTHREAD_CONFIG_PREFIX
import esphome.config_validation as cv
from esphome.const import PlatformFramework, Toolchain
from esphome.core import CORE, HexInt
from esphome.yaml_util import Sensitive
from tests.component_tests.types import SetCoreConfigCallable

NETWORK_KEY = 0xDFD34F0F05CAD978EC4E32B0413038FF
PSKC = 0xC23A76E98F1A6483639B1AC1271E2E27
TLV = "0e080000000000010000000300001435060004001fffe0"


@pytest.mark.parametrize(
    ("config", "field", "expected"),
    [
        ({"network_key": hex(NETWORK_KEY)}, "network_key", NETWORK_KEY),
        ({"network_key": hex(NETWORK_KEY), "pskc": hex(PSKC)}, "pskc", PSKC),
        ({"tlv": TLV}, "tlv", TLV),
    ],
)
def test_credentials_are_sensitive(
    config: dict[str, str],
    field: str,
    expected: int | str,
    set_core_config: SetCoreConfigCallable,
) -> None:
    """Thread credentials are tagged for redaction without changing their value
    or the hexadecimal integer type used to build sdkconfig options."""
    set_core_config(
        PlatformFramework.ESP32_IDF, platform_data={KEY_VARIANT: VARIANT_ESP32C6}
    )
    validated = CONFIG_SCHEMA(config)
    assert isinstance(validated[field], Sensitive)
    assert validated[field] == expected
    assert isinstance(validated[field], HexInt) == isinstance(expected, int)


def _generate_in(
    tmp_path: Path, yaml_text: str, generate_main: Callable[[str | Path], str]
) -> tuple[Path, MagicMock]:
    """Generate from ``yaml_text`` written to tmp_path, so the build directory lands there.

    Returns the header path and the mocked ``clean_build``.
    """
    config_path = tmp_path / "test.yaml"
    config_path.write_text(yaml_text, encoding="utf-8")
    with patch("esphome.components.openthread.clean_build") as clean_build:
        generate_main(config_path)
    return CORE.relative_build_path(OT_HEADER_DIR, OT_HEADER_FILE), clean_build


def test_core_options_written_to_header(
    tmp_path: Path,
    generate_main: Callable[[str | Path], str],
    component_config_path: Callable[[str], Path],
) -> None:
    header, _ = _generate_in(
        tmp_path,
        component_config_path("custom_header.yaml").read_text(encoding="utf-8"),
        generate_main,
    )
    sdkconfig = CORE.data[KEY_ESP32][KEY_SDKCONFIG_OPTIONS]
    assert sdkconfig["CONFIG_OPENTHREAD_HEADER_CUSTOM"] is True
    assert sdkconfig["CONFIG_OPENTHREAD_CUSTOM_HEADER_PATH"] == OT_HEADER_DIR
    assert sdkconfig["CONFIG_OPENTHREAD_CUSTOM_HEADER_FILE_NAME"] == OT_HEADER_FILE
    assert header.read_text(encoding="utf-8") == (
        "// Auto-generated by ESPHome from openthread core_options - do not edit\n"
        "#pragma once\n\n"
        "#define OPENTHREAD_CONFIG_COAP_BLOCKWISE_TRANSFER_ENABLE 1\n"
        "#define OPENTHREAD_CONFIG_MAC_DEFAULT_MAX_FRAME_RETRIES_DIRECT 5\n"
    )


def test_no_header_options_no_header(
    tmp_path: Path,
    generate_main: Callable[[str | Path], str],
    component_config_path: Callable[[str], Path],
) -> None:
    header, clean_build = _generate_in(
        tmp_path,
        component_config_path("no_custom_header.yaml").read_text(encoding="utf-8"),
        generate_main,
    )
    sdkconfig = CORE.data[KEY_ESP32][KEY_SDKCONFIG_OPTIONS]
    assert "CONFIG_OPENTHREAD_HEADER_CUSTOM" not in sdkconfig
    assert not header.exists()
    clean_build.assert_not_called()


@pytest.mark.parametrize(
    ("toolchain", "cleans"),
    [(Toolchain.PLATFORMIO, True), (Toolchain.ESP_IDF, False)],
)
def test_header_change_cleans_only_on_platformio(
    toolchain: Toolchain,
    cleans: bool,
    tmp_path: Path,
    generate_main: Callable[[str | Path], str],
    component_config_path: Callable[[str], Path],
) -> None:
    source = component_config_path("custom_header.yaml").read_text(encoding="utf-8")
    CORE.toolchain = toolchain
    _, clean_build = _generate_in(tmp_path, source, generate_main)
    assert clean_build.called is cleans
    # Unchanged content: no clean on either toolchain.
    CORE.reset()
    CORE.toolchain = toolchain
    _, clean_build = _generate_in(tmp_path, source, generate_main)
    clean_build.assert_not_called()
    # A changed value leaves sdkconfig as it was, so only this clean rebuilds OpenThread.
    changed = source.replace('RETRIES_DIRECT: "5"', 'RETRIES_DIRECT: "7"')
    assert changed != source
    CORE.reset()
    CORE.toolchain = toolchain
    header, clean_build = _generate_in(tmp_path, changed, generate_main)
    assert clean_build.called is cleans
    assert (
        "#define OPENTHREAD_CONFIG_MAC_DEFAULT_MAX_FRAME_RETRIES_DIRECT 7\n"
        in header.read_text(encoding="utf-8")
    )


@pytest.mark.parametrize(
    "name",
    [
        "CONFIG_OPENTHREAD_JOINER",
        "openthread_config_x",
        "OT_CONFIG_X",
        OPENTHREAD_CONFIG_PREFIX,
    ],
)
def test_core_option_without_prefix_rejected(
    name: str, set_core_config: SetCoreConfigCallable
) -> None:
    set_core_config(
        PlatformFramework.ESP32_IDF, platform_data={KEY_VARIANT: VARIANT_ESP32C6}
    )
    with pytest.raises(cv.Invalid, match=OPENTHREAD_CONFIG_PREFIX):
        CONFIG_SCHEMA({"network_key": hex(NETWORK_KEY), "core_options": {name: "1"}})


@pytest.mark.parametrize(
    "name",
    ["OPENTHREAD_CONFIG_a", "OPENTHREAD_CONFIG_A B", "OPENTHREAD_CONFIG_A-B"],
)
def test_core_option_bad_characters_rejected(
    name: str, set_core_config: SetCoreConfigCallable
) -> None:
    set_core_config(
        PlatformFramework.ESP32_IDF, platform_data={KEY_VARIANT: VARIANT_ESP32C6}
    )
    with pytest.raises(cv.Invalid, match="may only contain A-Z, 0-9 and _"):
        CONFIG_SCHEMA({"network_key": hex(NETWORK_KEY), "core_options": {name: "1"}})


@pytest.mark.parametrize(
    ("value", "message"),
    [
        ("", "must not be empty"),
        ("  ", "must not be empty"),
        ("1\n#define X 2", "must be a single line"),
        ("1\r2", "must be a single line"),
        ("1 \\", "must not end with"),
        ("1 \\  ", "must not end with"),
    ],
)
def test_core_option_bad_value_rejected(
    value: str, message: str, set_core_config: SetCoreConfigCallable
) -> None:
    set_core_config(
        PlatformFramework.ESP32_IDF, platform_data={KEY_VARIANT: VARIANT_ESP32C6}
    )
    with pytest.raises(cv.Invalid, match=message):
        CONFIG_SCHEMA(
            {
                "network_key": hex(NETWORK_KEY),
                "core_options": {"OPENTHREAD_CONFIG_X": value},
            }
        )


def test_core_options_only_on_esp32(set_core_config: SetCoreConfigCallable) -> None:
    set_core_config(PlatformFramework.NRF52_ZEPHYR)
    with pytest.raises(cv.Invalid, match="ESP32"):
        CONFIG_SCHEMA({"tlv": TLV, "core_options": {"OPENTHREAD_CONFIG_X": "1"}})