#ifndef CONFIG_H
#define CONFIG_H

// ============================================================
// ESP32 Serial Logger - Configuration
// ESP-WROOM-32D DevKitC V4
// ============================================================

// --- WiFi Configuration ---
#define WIFI_SSID       "YourSSID"
#define WIFI_PASSWORD   "YourPassword"
#define WIFI_AP_SSID    "ESP32_Logger"
#define WIFI_AP_PASSWORD "12345678"
#define WIFI_CONNECT_TIMEOUT 15000  // ms

// --- Serial2 (UART2) Pin Configuration ---
#define SERIAL2_TX_PIN  17   // GPIO17
#define SERIAL2_RX_PIN  16   // GPIO16

// --- Serial2 Default Settings ---
#define DEFAULT_BAUD_RATE   115200
#define DEFAULT_RX_BUFFER   4096

// --- VSPI SD Card Pin Configuration ---
#define SD_VSPI_MISO    19
#define SD_VSPI_MOSI    23
#define SD_VSPI_SCLK    18
#define SD_VSPI_CS       5

// --- DS3231 RTC I2C Configuration (SoftWire) ---
// 소프트웨어 I2C → 임의 GPIO 사용 가능
#define RTC_SDA_PIN     25    // I2C SDA
#define RTC_SCL_PIN     26    // I2C SCL
#define DS3231_ADDRESS  0x68  // DS3231 I2C Address
#define RTC_SYNC_INTERVAL_MS  60000   // RTC → System clock 보정 주기 (60초)

// --- FreeRTOS Task Priorities ---
#define TASK_PRIORITY_SERIAL    5    // Highest - must not miss data
#define TASK_PRIORITY_SD_LOG    3    // Medium-high - buffered writes
#define TASK_PRIORITY_WEB       2    // Medium - user interface
#define TASK_PRIORITY_RTC       1    // Low - periodic RTC sync
#define TASK_PRIORITY_NTP       1    // Lowest - periodic NTP sync

// --- FreeRTOS Task Stack Sizes ---
#define TASK_STACK_SERIAL   4096
#define TASK_STACK_SD_LOG   8192
#define TASK_STACK_WEB      8192
#define TASK_STACK_RTC      3072
#define TASK_STACK_NTP      4096

// --- Queue Configuration ---
#define QUEUE_SD_SIZE       512
#define QUEUE_WEB_SIZE      256
#define QUEUE_TX_SIZE       64

// --- Logging Configuration ---
#define LOG_LINE_MAX_LEN    512
#define SD_WRITE_INTERVAL   1000    // Flush to SD every N ms
#define LOG_DIR             "/logs"
#define CSV_HEADER          "Timestamp,Direction,Data\r\n"
#define LOG_MAX_FILE_SIZE   (100UL * 1024 * 1024)  // 100MB auto-rotate
#define LOG_ROTATE_MIDNIGHT true                    // New file at midnight

// --- NTP Configuration ---
#define NTP_SERVER          "pool.ntp.org"
#define NTP_GMT_OFFSET      32400   // KST = UTC+9 (9*3600)
#define NTP_DAYLIGHT_OFFSET 0

// --- WebSocket Configuration ---
#define WS_PORT             81
#define WS_MAX_CLIENTS      4

// --- Log Entry Structure ---
struct LogEntry {
  char timestamp[24];       // "2025-01-15 10:30:45.123"
  char direction;           // 'R' for RX, 'T' for TX
  char data[LOG_LINE_MAX_LEN];
  uint16_t dataLen;
};

#endif // CONFIG_H