#ifndef CONFIG_H
#define CONFIG_H

#include "driver/gpio.h"
#include "driver/ledc.h"

// ================================
// WiFi Configuration
// ================================
#define WIFI_SSID "GL-AXT1800-0c2"
#define WIFI_PASS "CR7W25FM8S"
#define WIFI_MAXIMUM_RETRY 5

// WiFi event group bits
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1

// ================================
// GPIO Pin Definitions
// ================================
#define LED_PIN GPIO_NUM_13
#define MOTOR_R_EN GPIO_NUM_18
#define MOTOR_L_EN GPIO_NUM_19
#define PWM_R_PIN GPIO_NUM_21
#define PWM_L_PIN GPIO_NUM_22

// ================================
// PWM Configuration
// ================================
#define PWM_FREQUENCY 20000
#define PWM_RESOLUTION LEDC_TIMER_8_BIT
#define PWM_R_CHANNEL LEDC_CHANNEL_0
#define PWM_L_CHANNEL LEDC_CHANNEL_1
#define PWM_TIMER LEDC_TIMER_0
#define PWM_SPEED_MODE LEDC_LOW_SPEED_MODE

// ================================
// Motor Control Configuration
// ================================
#define RAMP_STEP_MS 150                    // Time between ramp steps (milliseconds)
#define RAMP_STEP_SIZE 5                    // PWM duty change per step (0-255)
#define MIN_MOTOR_SPEED 10                  // Minimum speed to overcome motor inertia
#define DIRECTION_CHANGE_COOLDOWN_MS 10000  // 10 seconds cooldown for direction changes

// ================================
// Watchdog Configuration
// ================================
#define WATCHDOG_TIMEOUT_S 10               // Watchdog timeout in seconds
#define WATCHDOG_FEED_INTERVAL_MS 3000      // Feed watchdog every 3 seconds

// ================================
// State Preservation Configuration
// ================================
#define NVS_NAMESPACE "fan_state"
#define NVS_KEY_MODE "mode"
#define NVS_KEY_SPEED "speed"
#define NVS_KEY_LAST_ON_MODE "last_mode"
#define NVS_KEY_LAST_ON_SPEED "last_speed"
#define NVS_KEY_POWER_STATE "power_state"

// ================================
// HTTP Server Configuration
// ================================
#define HTTP_SERVER_PORT 80
#define HTTP_MAX_URI_HANDLERS 15
#define HTTP_RECV_TIMEOUT_SEC 10
#define HTTP_SEND_TIMEOUT_SEC 10

// ================================
// Status Update Configuration
// ================================
#define STATUS_UPDATE_INTERVAL_MS 1000      // Web interface status update interval

// ================================
// System Configuration
// ================================
#define SYSTEM_TAG "HTTP_MOTOR"             // Main logging tag

// ================================
// Safety Limits
// ================================
#define MAX_SPEED_PERCENT 100
#define MIN_SPEED_PERCENT 0
#define MAX_JSON_BUFFER_SIZE 200

// ================================
// Motor PWM Calculation Macros
// ================================
#define SPEED_TO_DUTY(speed_percent) ((speed_percent * 255) / 100)
#define DUTY_TO_SPEED(duty) ((duty * 100) / 255)

// ================================
// Validation Macros
// ================================
#define CLAMP_SPEED(speed) ((speed) < MIN_SPEED_PERCENT ? MIN_SPEED_PERCENT : \
                           (speed) > MAX_SPEED_PERCENT ? MAX_SPEED_PERCENT : (speed))

// For unsigned types (uint8_t), we only need to check the upper bound since MIN_SPEED_PERCENT is 0
#define IS_VALID_SPEED(speed) ((speed) <= MAX_SPEED_PERCENT)

// For signed types or when MIN_SPEED_PERCENT might be > 0, use this version:
#define IS_VALID_SPEED_FULL(speed) ((speed) >= MIN_SPEED_PERCENT && (speed) <= MAX_SPEED_PERCENT)

#define IS_DIRECTION_CHANGE(old_mode, new_mode) \
    (((old_mode) == MOTOR_EXHAUST && (new_mode) == MOTOR_INTAKE) || \
     ((old_mode) == MOTOR_INTAKE && (new_mode) == MOTOR_EXHAUST))

// ================================
// Debug Configuration
// ================================
#ifdef CONFIG_LOG_DEFAULT_LEVEL_DEBUG
#define MOTOR_DEBUG_ENABLED 1
#else
#define MOTOR_DEBUG_ENABLED 0
#endif

// Debug logging macro
#if MOTOR_DEBUG_ENABLED
#define MOTOR_LOGD(tag, format, ...) ESP_LOGD(tag, format, ##__VA_ARGS__)
#else
#define MOTOR_LOGD(tag, format, ...)
#endif

#endif // CONFIG_H