#pragma once

#include "esphome/core/component.h"
#include "esphome/components/i2c/i2c.h"
#include "esphome/components/time/real_time_clock.h"

namespace esphome {
namespace pcf85063 {

enum PCF85063ATimerInterruptMode_t : bool {
  TIMER_INTERRUPT_MODE_FLAG = 0,
  TIMER_INTERRUPT_MODE_PULSE = 1,
};

enum PCF85063ATimerClockFrequency_t : uint8_t {
  TIMER_CLOCK_4096HZ = 0,
  TIMER_CLOCK_64HZ = 1,
  TIMER_CLOCK_SECOND = 2,
  TIMER_CLOCK_MINUTE = 3,
};

class PCF85063Component : public time::RealTimeClock, public i2c::I2CDevice {
 public:
  void setup() override;
  void update() override;
  void dump_config() override;
  float get_setup_priority() const override;
  void read_time();
  void write_time();
  void write_nvram(uint8_t);
  uint8_t read_nvram();

  bool set_timer_interval(uint16_t interval);


 protected:
  bool write_timer_();
  bool read_rtc_();
  bool write_rtc_();
  union PCF85063Reg {
    struct {
      // Control_1 register
      bool cap_12pf : 1;
      bool am_pm : 1;
      bool correction_int_enable : 1;
      bool : 1;
      bool soft_reset : 1;
      bool stop : 1;
      bool : 1;
      bool ext_test : 1;

      // Control_2 register
      uint8_t clkout_control : 3;
      bool timer_flag : 1;
      bool halfminute_int : 1;
      bool minute_int : 1;
      bool alarm_flag : 1;
      bool alarm_int : 1;

      // Offset register
      uint8_t offset : 7;
      bool coarse_mode : 1;

      // nvRAM register
      uint8_t nvram : 8;

      // Seconds register
      uint8_t second : 4;
      uint8_t second_10 : 3;
      bool osc_stop : 1;

      // Minutes register
      uint8_t minute : 4;
      uint8_t minute_10 : 3;
      uint8_t : 1;

      // Hours register
      uint8_t hour : 4;
      uint8_t hour_10 : 2;
      uint8_t : 2;

      // Days register
      uint8_t day : 4;
      uint8_t day_10 : 2;
      uint8_t : 2;

      // Weekdays register
      uint8_t weekday : 3;
      uint8_t : 5;

      // Months register
      uint8_t month : 4;
      uint8_t month_10 : 1;
      uint8_t : 3;

      // Years register
      uint8_t year : 4;
      uint8_t year_10 : 4;

      // PCF85063A Additional registers
      // Second alarm
      uint8_t alarm_second : 4;
      uint8_t alarm_second_10 : 3;
      bool alarm_second_enabled : 1;

      // Minute alarm
      uint8_t alarm_minute : 4;
      uint8_t alarm_minute_10 : 3;
      bool alarm_minute_enabled : 1;

      // Hour alarm
      uint8_t alarm_hour : 4;
      uint8_t alarm_hour_10 : 2;
      uint8_t : 1;
      bool alarm_hour_enabled : 1;

      // Day alarm
      uint8_t alarm_day : 4;
      uint8_t alarm_day_10 : 2;
      uint8_t : 1;
      bool alarm_day_enabled : 1;

      // Weekday alarm
      uint8_t alarm_weekday : 3;
      uint8_t : 4;
      bool alarm_weekday_enabled : 1;

      // Timer value
      uint8_t timer_value : 8;

      // Timer mode
      PCF85063ATimerInterruptMode_t timer_interrupt_mode : 1;
      bool timer_interrupt_enable : 1;
      bool timer_enable : 1;
      PCF85063ATimerClockFrequency_t timer_clock_frequency : 2;
      uint8_t : 3;
    } reg;
    mutable uint8_t raw[sizeof(reg)];
  } pcf85063_;
};

template<typename... Ts> class StartTimerAction : public Action<Ts...>, public Parented<PCF85063Component> {
 public:
  TEMPLATABLE_VALUE(uint16_t, timer_seconds);
  void play(Ts... x) override {
    this->parent_->pcf85063_.reg.timer_interrupt_enable = true;
    this->parent_->pcf85063_.reg.timer_interrupt_mode = TIMER_INTERRUPT_MODE_FLAG;
    this->parent_->set_timer_interval(this->timer_seconds_.value(x...));
  }
};

template<typename... Ts> class WriteAction : public Action<Ts...>, public Parented<PCF85063Component> {
 public:
  void play(Ts... x) override { this->parent_->write_time(); }
};

template<typename... Ts> class ReadAction : public Action<Ts...>, public Parented<PCF85063Component> {
 public:
  void play(Ts... x) override { this->parent_->read_time(); }
};
}  // namespace pcf85063
}  // namespace esphome