syntax = "proto3";

package nexusrmm;

option csharp_namespace = "NexusRMM.Protos";
option go_package = "github.com/nexusrmm/agent/pkg/proto";

// --- Agent Enrollment ---
message EnrollRequest {
  string hostname = 1;
  string os_type = 2;
  string os_version = 3;
  string mac_address = 4;
  string ip_address = 5;
  string agent_version = 6;
}

message EnrollResponse {
  string agent_id = 1;
  int32 heartbeat_interval = 2;
}

// --- Heartbeat / Metriken ---
message HeartbeatRequest {
  string agent_id = 1;
  SystemMetrics metrics = 2;
}

message SystemMetrics {
  double cpu_usage_percent = 1;
  double memory_usage_percent = 2;
  int64 memory_total_bytes = 3;
  int64 memory_available_bytes = 4;
  repeated DiskInfo disks = 5;
  repeated NetworkInterfaceInfo network_interfaces = 6;
  double uptime_seconds = 7;
}

message DiskInfo {
  string mount_point = 1;
  int64 total_bytes = 2;
  int64 free_bytes = 3;
  string filesystem = 4;
}

message NetworkInterfaceInfo {
  string name = 1;
  string ip_address = 2;
  string mac_address = 3;
  int64 bytes_sent = 4;
  int64 bytes_recv = 5;
}

message HeartbeatResponse {
  repeated AgentCommand pending_commands = 1;
}

// --- Remote Commands ---
message AgentCommand {
  string command_id = 1;
  CommandType type = 2;
  string payload = 3;
}

enum CommandType {
  COMMAND_TYPE_UNSPECIFIED = 0;
  COMMAND_TYPE_SHELL = 1;
  COMMAND_TYPE_INSTALL_SOFTWARE = 2;
  COMMAND_TYPE_UNINSTALL_SOFTWARE = 3;
  COMMAND_TYPE_UPDATE_AGENT = 4;
  COMMAND_TYPE_NETWORK_SCAN = 5;
}

message CommandResult {
  string agent_id = 1;
  string command_id = 2;
  int32 exit_code = 3;
  string stdout = 4;
  string stderr = 5;
  bool success = 6;
}

message CommandResultResponse {}

// --- Bidirektionaler Stream ---
message AgentStreamMessage {
  string agent_id = 1;
  oneof payload {
    HeartbeatRequest heartbeat = 2;
    CommandResult command_result = 3;
  }
}

message ServerStreamMessage {
  oneof payload {
    AgentCommand command = 1;
    ServerConfig config_update = 2;
  }
}

message ServerConfig {
  int32 heartbeat_interval = 1;
  int32 metric_collection_interval = 2;
}

// --- Service Definition ---
service AgentService {
  rpc Enroll(EnrollRequest) returns (EnrollResponse);
  rpc Heartbeat(HeartbeatRequest) returns (HeartbeatResponse);
  rpc ReportCommandResult(CommandResult) returns (CommandResultResponse);
  rpc AgentStream(stream AgentStreamMessage) returns (stream ServerStreamMessage);
}