#ifndef __CONFIG_H__
#define __CONFIG_H__

#include <stddef.h>

typedef enum {
    LOG_LEVEL_DEBUG,
    LOG_LEVEL_INFO,
    LOG_LEVEL_ERROR
} LogLevel;

typedef enum {
    MODE_MASTER,
    MODE_SLAVE
} ServerMode;

typedef enum {
    PERSIST_INCREMENTAL,
    PERSIST_NONE
} PersistenceType;

typedef enum {
    ALLOC_JEMALLOC,
    ALLOC_MALLOC,
    ALLOC_OTHER
} AllocatorType;

typedef struct {
    char            ip[64];
    int             port;
    ServerMode      mode;

    char            master_ip[64];  // slave 才需要
    int             master_port;    // slave 才需要

    LogLevel        log_level;

    PersistenceType persistence;
    char            persist_dir[256];
    char            oplog_file[256];
    char            array_file[256];
    char            rbtree_file[256];
    char            hash_file[256];

    AllocatorType   allocator;
} AppConfig;

/**
 * 从 XML 文件加载配置
 * 返回 0 表示成功；非 0 表示失败
 */
int config_load(const char *filename, AppConfig *out_cfg);

const char *log_level_to_string(LogLevel lvl);
const char *server_mode_to_string(ServerMode mode);
const char *persistence_to_string(PersistenceType p);
const char *allocator_to_string(AllocatorType a);

#endif /* CONFIG_H */