#include <stdarg.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>

typedef enum Dns2socksVerbosity {
  Dns2socksVerbosity_Off = 0,
  Dns2socksVerbosity_Error,
  Dns2socksVerbosity_Warn,
  Dns2socksVerbosity_Info,
  Dns2socksVerbosity_Debug,
  Dns2socksVerbosity_Trace,
} Dns2socksVerbosity;

#ifdef __cplusplus
extern "C" {
#endif // __cplusplus

/**
 * # Safety
 *
 * Start dns2socks
 * Parameters:
 * - listen_addr: the listen address, e.g. "172.19.0.1:53", or null to use the default value
 * - dns_remote_server: the dns remote server, e.g. "8.8.8.8:53", or null to use the default value
 * - socks5_settings: the socks5 server, e.g. "socks5://[username[:password]@]host:port", or null to use the default value
 * - force_tcp: whether to force tcp, true or false, default is false
 * - cache_records: whether to cache dns records, true or false, default is false
 * - verbosity: the verbosity level, see ArgVerbosity enum, default is ArgVerbosity::Info
 * - timeout: the timeout in seconds, default is 5
 */
jint Java_com_github_shadowsocks_bg_Dns2socks_start(JNIEnv env,
                                                    JClass _clazz,
                                                    JString listen_addr,
                                                    JString dns_remote_server,
                                                    JString socks5_settings,
                                                    jboolean force_tcp,
                                                    jboolean cache_records,
                                                    jint verbosity,
                                                    jint timeout);

/**
 * # Safety
 *
 * Shutdown dns2socks
 */
jint Java_com_github_shadowsocks_bg_Dns2socks_stop(JNIEnv _env, JClass);

/**
 * # Safety
 *
 * Run the dns2socks component with some arguments.
 * Parameters:
 * - listen_addr: the listen address, e.g. "0.0.0.0:53", or null to use the default value
 * - dns_remote_server: the dns remote server, e.g. "8.8.8.8:53", or null to use the default value
 * - socks5_settings: the socks5 server, e.g. "socks5://[username[:password]@]host:port", or null to use the default value
 * - force_tcp: whether to force tcp, true or false, default is false
 * - cache_records: whether to cache dns records, true or false, default is false
 * - verbosity: the verbosity level, see ArgVerbosity enum, default is ArgVerbosity::Info
 * - timeout: the timeout in seconds, default is 5
 */
int dns2socks_start(const char *listen_addr,
                    const char *dns_remote_server,
                    const char *socks5_settings,
                    bool force_tcp,
                    bool cache_records,
                    enum Dns2socksVerbosity verbosity,
                    int32_t timeout);

/**
 * # Safety
 *
 * Shutdown the dns2socks component.
 */
int dns2socks_stop(void);

/**
 * # Safety
 *
 * set dump log info callback.
 */
void dns2socks_set_log_callback(void (*callback)(enum Dns2socksVerbosity, const char*, void*),
                                void *ctx);

#ifdef __cplusplus
}  // extern "C"
#endif  // __cplusplus