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#include <stdio.h>
#include <lib/battery/battery.h>
#include "analog_battery.h"

// Defaults to use if the parameters are not set
#if BOARD_NUMBER_BRICKS > 0
#if defined(BOARD_BATT_V_LIST) && defined(BOARD_BATT_I_LIST)
static constexpr int   DEFAULT_V_CHANNEL[BOARD_NUMBER_BRICKS] = BOARD_BATT_V_LIST;
static constexpr int   DEFAULT_I_CHANNEL[BOARD_NUMBER_BRICKS] = BOARD_BATT_I_LIST;
#else
static constexpr int   DEFAULT_V_CHANNEL[BOARD_NUMBER_BRICKS] = {0};
static constexpr int   DEFAULT_I_CHANNEL[BOARD_NUMBER_BRICKS] = {0};
#endif
#else
static constexpr int DEFAULT_V_CHANNEL[1] = {0};
static constexpr int DEFAULT_I_CHANNEL[1] = {0};
#endif

AnalogBattery::AnalogBattery(int index, ModuleParams *parent, const int sample_interval_us) :
	Battery(index, parent, sample_interval_us)
{
	char param_name[17];

	_analog_param_handles.v_offs_cur = param_find("BAT_V_OFFS_CURR");

	snprintf(param_name, sizeof(param_name), "BAT%d_V_DIV", index);
	_analog_param_handles.v_div = param_find(param_name);

	snprintf(param_name, sizeof(param_name), "BAT%d_A_PER_V", index);
	_analog_param_handles.a_per_v = param_find(param_name);

	snprintf(param_name, sizeof(param_name), "BAT%d_V_CHANNEL", index);
	_analog_param_handles.v_channel = param_find(param_name);

	snprintf(param_name, sizeof(param_name), "BAT%d_I_CHANNEL", index);
	_analog_param_handles.i_channel = param_find(param_name);
}

void
AnalogBattery::updateBatteryStatusADC(hrt_abstime timestamp, float voltage_raw, float current_raw,
				      int source, int priority, float throttle_normalized)
{
	float voltage_v = voltage_raw * _analog_params.v_div;
	float current_a = (current_raw - _analog_params.v_offs_cur) * _analog_params.a_per_v;

	bool connected = voltage_v > BOARD_ADC_OPEN_CIRCUIT_V &&
			 (BOARD_ADC_OPEN_CIRCUIT_V <= BOARD_VALID_UV || is_valid());


	Battery::updateBatteryStatus(timestamp, voltage_v, current_a, connected,
				     source, priority, throttle_normalized);
}

bool AnalogBattery::is_valid()
{
#ifdef BOARD_BRICK_VALID_LIST
	bool valid[BOARD_NUMBER_BRICKS] = BOARD_BRICK_VALID_LIST;
	return valid[_index - 1];
#else
	// TODO: Maybe return false instead?
	return true;
#endif
}

int AnalogBattery::get_voltage_channel()
{
	if (_analog_params.v_channel >= 0) {
		return _analog_params.v_channel;

	} else {
		return DEFAULT_V_CHANNEL[_index - 1];
	}
}

int AnalogBattery::get_current_channel()
{
	if (_analog_params.i_channel >= 0) {
		return _analog_params.i_channel;

	} else {
		return DEFAULT_I_CHANNEL[_index - 1];
	}
}

void
AnalogBattery::updateParams()
{
	param_get(_analog_param_handles.v_div, &_analog_params.v_div);
	param_get(_analog_param_handles.a_per_v, &_analog_params.a_per_v);
	param_get(_analog_param_handles.v_channel, &_analog_params.v_channel);
	param_get(_analog_param_handles.i_channel, &_analog_params.i_channel);
	param_get(_analog_param_handles.v_offs_cur, &_analog_params.v_offs_cur);

	if (_analog_params.v_div < 0.0f) {
		/* apply scaling according to defaults if set to default */
		_analog_params.v_div = BOARD_BATTERY1_V_DIV;
		param_set_no_notification(_analog_param_handles.v_div, &_analog_params.v_div);
	}

	if (_analog_params.a_per_v < 0.0f) {
		/* apply scaling according to defaults if set to default */
		_analog_params.a_per_v = BOARD_BATTERY1_A_PER_V;
		param_set_no_notification(_analog_param_handles.a_per_v, &_analog_params.a_per_v);
	}

	Battery::updateParams();
}