#pragma once
#ifndef ANSCLOUD_GATEWAY_AGENT_C_H
#define ANSCLOUD_GATEWAY_AGENT_C_H

#ifdef ANSCLOUD_GATEWAY_EXPORTS
  #define ANSCLOUD_GATEWAY_CAPI __declspec(dllexport)
#else
  #define ANSCLOUD_GATEWAY_CAPI __declspec(dllimport)
#endif

#ifdef __cplusplus
extern "C" {
#endif

typedef struct AnsGatewayAgent* AnsGatewayAgentHandle;

typedef struct {
    const char* host;
    int         port;
    const char* username;
    const char* password;
    const char* vhost;
    int         use_tls;
} AnsGatewayBrokerConfig;

typedef struct {
    const char* username;
    const char* password;
    const char* vhost;
} AnsGatewayCredentials;

typedef struct {
    AnsGatewayBrokerConfig broker;
    AnsGatewayCredentials  credentials;
    int device_timeout_seconds;
    int default_command_timeout_seconds;
    int max_pending_commands;
} AnsGatewayConfig;

// Callbacks - all receive JSON strings
typedef void (*AnsGatewayTelemetryCallbackFn)(const char* telemetry_json, void* user_data);
typedef void (*AnsGatewayHeartbeatCallbackFn)(const char* heartbeat_json, void* user_data);
typedef void (*AnsGatewayEventCallbackFn)(const char* event_json, void* user_data);
typedef void (*AnsGatewayDeviceStatusCallbackFn)(const char* device_id, const char* status, void* user_data);
typedef void (*AnsGatewayConnectionCallbackFn)(int connected, void* user_data);
typedef void (*AnsGatewayErrorCallbackFn)(const char* error, void* user_data);

//=============================================================================
// Lifecycle
//=============================================================================
ANSCLOUD_GATEWAY_CAPI AnsGatewayAgentHandle ansgateway_create(void);
ANSCLOUD_GATEWAY_CAPI void                  ansgateway_destroy(AnsGatewayAgentHandle handle);
ANSCLOUD_GATEWAY_CAPI int  ansgateway_configure(AnsGatewayAgentHandle handle, const AnsGatewayConfig* config);
ANSCLOUD_GATEWAY_CAPI int  ansgateway_start(AnsGatewayAgentHandle handle);
ANSCLOUD_GATEWAY_CAPI void ansgateway_stop(AnsGatewayAgentHandle handle);
ANSCLOUD_GATEWAY_CAPI int  ansgateway_is_running(AnsGatewayAgentHandle handle);
ANSCLOUD_GATEWAY_CAPI int  ansgateway_is_connected(AnsGatewayAgentHandle handle);