// ============================================================
//  INTERMISSION OBJECT — MOTOR + HALL SENSOR TEST
//
//  Motor cycles: 2 s ON → 1 s OFF → repeat.
//  No PWM — direct GPIO drive to rule out frequency/switching issues.
//  LED flashes on every Hall pulse (purely visual, no serial needed).
//  OTA stays active for wireless re-upload.
// ============================================================

#include "wifi_ota.h"

// ── Pins ─────────────────────────────────────────────────────
#define PIN_LED_PWM    4
#define PIN_MOTOR      7
#define PIN_HALL       8

// ── PWM (LED only) ───────────────────────────────────────────
#define PWM_FREQ_LED   24989
#define PWM_RES        8

// ── Timing ───────────────────────────────────────────────────
#define MOTOR_ON_MS    2000UL   // motor on duration
#define MOTOR_OFF_MS   1000UL   // motor off duration (cooling gap)
#define DEBOUNCE_MS    5
#define LED_FLASH_MS   120

// ── Hall ISR ─────────────────────────────────────────────────
volatile bool     pulseFlag   = false;
volatile uint32_t lastPulseUs = 0;

void IRAM_ATTR onPulse() {
  uint32_t now = micros();
  if (now - lastPulseUs > (uint32_t)DEBOUNCE_MS * 1000UL) {
    pulseFlag   = true;
    lastPulseUs = now;
  }
}

unsigned long flashStartMs  = 0;
unsigned long motorCycleMs  = 0;
bool          motorOn       = false;

// ─────────────────────────────────────────────────────────────
void setup() {
  // Motor — plain GPIO, no PWM
  pinMode(PIN_MOTOR, OUTPUT);
  digitalWrite(PIN_MOTOR, LOW);

  // LED — PWM for soft flash
  ledcAttach(PIN_LED_PWM, PWM_FREQ_LED, PWM_RES);
  ledcWrite(PIN_LED_PWM, 0);

  pinMode(PIN_HALL, INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(PIN_HALL), onPulse, FALLING);

  setupWiFiOTA();

  // Start first motor ON cycle
  digitalWrite(PIN_MOTOR, HIGH);
  motorOn      = true;
  motorCycleMs = millis();
}

// ─────────────────────────────────────────────────────────────
void loop() {
  handleOTA();

  unsigned long now = millis();

  // Motor on/off cycle
  if (motorOn && now - motorCycleMs >= MOTOR_ON_MS) {
    digitalWrite(PIN_MOTOR, LOW);
    motorOn      = false;
    motorCycleMs = now;
  } else if (!motorOn && now - motorCycleMs >= MOTOR_OFF_MS) {
    digitalWrite(PIN_MOTOR, HIGH);
    motorOn      = true;
    motorCycleMs = now;
  }

  // Hall pulse → LED flash
  if (pulseFlag) {
    pulseFlag    = false;
    flashStartMs = now;
    ledcWrite(PIN_LED_PWM, 255);
  }

  if (now - flashStartMs >= LED_FLASH_MS) {
    ledcWrite(PIN_LED_PWM, 0);
  }
}