import esphome.codegen as cg
from esphome.components import light, spi
import esphome.config_validation as cv
from esphome.const import CONF_CHIPSET, CONF_NUM_LEDS, CONF_OUTPUT_ID
from esphome.types import ConfigType

spi_led_strip_ns = cg.esphome_ns.namespace("spi_led_strip")
SpiLedStrip = spi_led_strip_ns.class_(
    "SpiLedStrip", light.AddressableLight, spi.SPIDevice
)
SpiLedChipset = spi_led_strip_ns.enum("SpiLedChipset", is_class=True)

CHIPSET_APA102 = "APA102"
CHIPSET_WS2801 = "WS2801"

CHIPSETS = {
    CHIPSET_APA102: SpiLedChipset.SPI_LED_CHIPSET_APA102,
    CHIPSET_WS2801: SpiLedChipset.SPI_LED_CHIPSET_WS2801,
}

BASE_SCHEMA = light.ADDRESSABLE_LIGHT_SCHEMA.extend(
    {
        cv.GenerateID(CONF_OUTPUT_ID): cv.declare_id(SpiLedStrip),
        cv.Optional(CONF_NUM_LEDS, default=1): cv.positive_not_null_int,
    }
)

CONFIG_SCHEMA = cv.typed_schema(
    {
        CHIPSET_APA102: BASE_SCHEMA.extend(spi.spi_device_schema(False, "1MHz")),
        # WS2801 latches the data when the clock stays low, so the clock must idle low
        CHIPSET_WS2801: BASE_SCHEMA.extend(
            spi.spi_device_schema(False, "1MHz", "MODE0")
        ),
    },
    key=CONF_CHIPSET,
    default_type=CHIPSET_APA102,
    enum=CHIPSETS,
    upper=True,
)


async def to_code(config: ConfigType) -> None:
    chipset = config[CONF_CHIPSET]
    if chipset == CHIPSET_WS2801:
        cg.add_define("USE_SPI_LED_STRIP_WS2801")
    var = cg.new_Pvariable(config[CONF_OUTPUT_ID], config[CONF_NUM_LEDS], chipset)
    await light.register_light(var, config)
    await spi.register_spi_device(var, config)
    await cg.register_component(var, config)