import esphome.codegen as cg
import esphome.config_validation as cv
from esphome import pins
from esphome.components import spi
from esphome.const import CONF_ID #, CONF_MODE

# Import ThreadModel enum
#from esphome.core import ThreadModel

MULTI_CONF = True

CONF_DRDY_PIN = "drdy_pin"
CONF_SYNC_RESET_PIN = "sync_reset_pin"
CONF_REFERENCE_VOLTAGE = "reference_voltage"
CONF_CLOCK_FREQUENCY = "clock_frequency"
CONF_ADS131M08_ID = "_ads131m08_id"
CONF_OSR = "oversampling_ratio"

DEPENDENCIES = ["spi"]

ads131m08_ns = cg.esphome_ns.namespace("ads131m08")
ADS131M08Hub = ads131m08_ns.class_("ADS131M08Hub", cg.Component, spi.SPIDevice)

OSR = ads131m08_ns.enum("ADS131M08_OVERSAMPLING_RATIO")
ALLOWED_OSRS = {
    128: OSR.OSR_128,
    256: OSR.OSR_256,
    512: OSR.OSR_512,
    1024: OSR.OSR_1024,
    2048: OSR.OSR_2048,
    4096: OSR.OSR_4096,
    8192: OSR.OSR_8192,
    16256: OSR.OSR_16256,
}

ALLOWED_CLOCK_FREQUENCIES = {
    2048000: 2048000,
    4096000: 4096000,
    8192000: 8192000,
    "2048kHz": 2048000,
    "4096kHz": 4096000,   
    "8192kHz": 8192000,    
    "2.048MHz": 2048000,
    "4.096MHz": 4096000,   
    "8.192MHz": 8192000,
    }

CONFIG_SCHEMA = (
    cv.Schema(
        {
            cv.GenerateID(): cv.declare_id(ADS131M08Hub),
            cv.Required(CONF_DRDY_PIN): pins.internal_gpio_input_pin_schema,
            cv.Optional(CONF_SYNC_RESET_PIN): pins.internal_gpio_input_pin_schema,
            cv.Optional(CONF_CLOCK_FREQUENCY, default="8192kHz"): cv.All(cv.frequency, cv.one_of(*ALLOWED_CLOCK_FREQUENCIES.keys())),  
            cv.Optional(CONF_OSR, default=1024): cv.enum(ALLOWED_OSRS, int=True),
            cv.Optional(CONF_REFERENCE_VOLTAGE, default=1.2): cv.float_range(min=1.1, max=1.3),
        }
    )
    .extend(cv.COMPONENT_SCHEMA)
    .extend(spi.spi_device_schema(cs_pin_required=True, default_data_rate="10MHz"))
)

async def to_code(config):
    var = cg.new_Pvariable(config[CONF_ID])
    await cg.register_component(var, config)
    await spi.register_spi_device(var, config)
    drdy = await cg.gpio_pin_expression(config[CONF_DRDY_PIN])
    if CONF_SYNC_RESET_PIN in config:
        sync_reset = await cg.gpio_pin_expression(config[CONF_SYNC_RESET_PIN])
        cg.add(var.set_sync_reset_pin(sync_reset))
    clock_frequency = ALLOWED_CLOCK_FREQUENCIES[config[CONF_CLOCK_FREQUENCY]]
    cg.add(var.set_clock_frequency(clock_frequency))    
    osr = config[CONF_OSR]
    cg.add(var.set_osr(osr))
    reference_voltage = config[CONF_REFERENCE_VOLTAGE]
    cg.add(var.set_reference_voltage(reference_voltage))
    cg.add(var.set_drdy_pin(drdy))
    #cg.add(var.set_thread_model(ThreadModel.MULTI_ATOMICS))