#ifndef LOG_MODULE_H
#define LOG_MODULE_H

#include <Arduino.h>
#include <esp_partition.h>
#include <Preferences.h>

#define PAYLOAD_SIZE 16

// Используем partition для логов
#define LOG_PARTITION_SUBTYPE 0x70

//#define META_PRINT
//#define FLASH_PRINT
//#define LOGGED_PRINT


// Размер партиции для логов - строго 2 МБ
#define LOG_PARTITION_SIZE 0x200000  // 2 MB = 2097152 bytes

struct LogEntry {
    uint32_t seq;
    uint64_t ts;
    uint8_t event_type;
    uint8_t crc;
    char payload[PAYLOAD_SIZE];
    uint8_t reserved[2];
} __attribute__((packed));

#define ENTRY_SIZE sizeof(LogEntry)

class LogModule {
public:
    LogModule();
    bool begin();
    bool writeLog(const LogEntry &entry);
    void dumpLogs();
    void clearLogs();
    void handleUART(char cmd, char dumpCmd = 'd', char clearCmd = 'c');

private:
    const esp_partition_t* partition;
    uint32_t write_pos;
    uint32_t total_entries;
    uint32_t partition_size;
    Preferences prefs;
    
    uint8_t calculateCRC(const LogEntry &entry);
    bool verifyEntry(const LogEntry &entry);
    void recoverLog();
    uint32_t findLastValidEntry();
    bool validateAllEntries();
    
    bool readRaw(uint32_t offset, uint8_t* data, size_t size);
    bool writeRaw(uint32_t offset, const uint8_t* data, size_t size);
    
    void saveMetadata();
    bool loadMetadata();
};

#endif