import esphome.codegen as cg
import esphome.config_validation as cv
from esphome.components import sensor, esp32_ble_tracker
from esphome.const import (
    CONF_IBEACON_MAJOR,
    CONF_IBEACON_MINOR,
    CONF_IBEACON_UUID,
    CONF_SERVICE_UUID,
    CONF_MAC_ADDRESS,
    DEVICE_CLASS_SIGNAL_STRENGTH,
    STATE_CLASS_MEASUREMENT,
    UNIT_DECIBEL_MILLIWATT,
)

DEPENDENCIES = ["esp32_ble_tracker"]

ble_rssi_ns = cg.esphome_ns.namespace("ble_rssi")
BLERSSISensor = ble_rssi_ns.class_(
    "BLERSSISensor", sensor.Sensor, cg.Component, esp32_ble_tracker.ESPBTDeviceListener
)


def _validate(config):
    if CONF_IBEACON_MAJOR in config and CONF_IBEACON_UUID not in config:
        raise cv.Invalid("iBeacon major identifier requires iBeacon UUID")
    if CONF_IBEACON_MINOR in config and CONF_IBEACON_UUID not in config:
        raise cv.Invalid("iBeacon minor identifier requires iBeacon UUID")
    return config


CONFIG_SCHEMA = cv.All(
    sensor.sensor_schema(
        BLERSSISensor,
        unit_of_measurement=UNIT_DECIBEL_MILLIWATT,
        accuracy_decimals=0,
        device_class=DEVICE_CLASS_SIGNAL_STRENGTH,
        state_class=STATE_CLASS_MEASUREMENT,
    )
    .extend(
        {
            cv.Optional(CONF_MAC_ADDRESS): cv.mac_address,
            cv.Optional(CONF_SERVICE_UUID): esp32_ble_tracker.bt_uuid,
            cv.Optional(CONF_IBEACON_MAJOR): cv.uint16_t,
            cv.Optional(CONF_IBEACON_MINOR): cv.uint16_t,
            cv.Optional(CONF_IBEACON_UUID): cv.uuid,
        }
    )
    .extend(esp32_ble_tracker.ESP_BLE_DEVICE_SCHEMA)
    .extend(cv.COMPONENT_SCHEMA),
    cv.has_exactly_one_key(CONF_MAC_ADDRESS, CONF_SERVICE_UUID, CONF_IBEACON_UUID),
    _validate,
)


async def to_code(config):
    var = await sensor.new_sensor(config)
    await cg.register_component(var, config)
    await esp32_ble_tracker.register_ble_device(var, config)

    if mac_address := config.get(CONF_MAC_ADDRESS):
        cg.add(var.set_address(mac_address.as_hex))

    if service_uuid := config.get(CONF_SERVICE_UUID):
        if len(service_uuid) == len(esp32_ble_tracker.bt_uuid16_format):
            cg.add(var.set_service_uuid16(esp32_ble_tracker.as_hex(service_uuid)))
        elif len(service_uuid) == len(esp32_ble_tracker.bt_uuid32_format):
            cg.add(var.set_service_uuid32(esp32_ble_tracker.as_hex(service_uuid)))
        elif len(service_uuid) == len(esp32_ble_tracker.bt_uuid128_format):
            uuid128 = esp32_ble_tracker.as_reversed_hex_array(service_uuid)
            cg.add(var.set_service_uuid128(uuid128))

    if ibeacon_uuid := config.get(CONF_IBEACON_UUID):
        ibeacon_uuid = esp32_ble_tracker.as_hex_array(str(ibeacon_uuid))
        cg.add(var.set_ibeacon_uuid(ibeacon_uuid))

        if (ibeacon_major := config.get(CONF_IBEACON_MAJOR)) is not None:
            cg.add(var.set_ibeacon_major(ibeacon_major))

        if (ibeacon_minor := config.get(CONF_IBEACON_MINOR)) is not None:
            cg.add(var.set_ibeacon_minor(ibeacon_minor))