#include "adc.h"
#include "main.h"
#include "network.h"
#include "led.h"
#include "reset_log.h"
#include <string.h>
#include <stdio.h>

ADC_HandleTypeDef hadc1;

void adcInit(void)
{
    ADC_ChannelConfTypeDef sConfig = {0};
    hadc1.Instance = ADC1;
    hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
    hadc1.Init.ContinuousConvMode = DISABLE;
    hadc1.Init.DiscontinuousConvMode = DISABLE;
    hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    hadc1.Init.NbrOfConversion = 1;
    if (HAL_ADC_Init(&hadc1) != HAL_OK) Error_Handler();

    sConfig.Channel = ADC_CHANNEL_0;
    sConfig.Rank = ADC_REGULAR_RANK_1;
    sConfig.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
    if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK) Error_Handler();
}

uint16_t getAdc(void)
{
    uint16_t adc_value = 0;
    HAL_ADC_Start(&hadc1);
    if (HAL_ADC_PollForConversion(&hadc1, 10) == HAL_OK) {
        adc_value = HAL_ADC_GetValue(&hadc1);
    }
    HAL_ADC_Stop(&hadc1);
    return adc_value;
}

void update_batter(void)
{
    static _Bool powoff = 0;
    static uint8_t low_cnt = 0;
    float batter_valtage;
    uint16_t adc_value;
    adc_value = getAdc();
    batter_valtage = adc_value * (3.3 / 4096.0);
    batter_valtage = batter_valtage * 11.0;
    batter_valtage += 0.6;
    batter_valtage = 100 * (batter_valtage - 10.8) / (12.6 - 10.8);
    /* 限幅 0~100%：法拉电容放电时 3.3V 基准下跌，ADC 读数失真可能算出负数 */
    if (batter_valtage < 0) batter_valtage = 0;
    if (batter_valtage > 100) batter_valtage = 100;

    /* 连续 3 次低于 10% 才判定（去抖），防止单次采样毛刺误判 */
    if (batter_valtage < 10) {
        if (low_cnt < 3) low_cnt++;
    } else {
        low_cnt = 0;
    }

    if (low_cnt >= 3 && powoff == 0) {
        powoff = 1;
        log_info("> 电量低: %d%%", (int)batter_valtage);
        NET_publish_power(0);
        /* 电量 <10% 基本等同外部 12V 断开（法拉电容续航约 30s），
         * 立即写断电记录（含当前运行时长），随后复位：
         * BootLoader 会检测主电源，12V 未恢复前不跳 APP，防止外设没上电时程序乱跑 */
        reset_log_power_loss();
        HAL_Delay(200);
        NVIC_SystemReset();
    }
    /* LED1: 低电量时常亮 */
    if (powoff) LED1_ON; else LED1_OFF;
}