syntax = "proto3";

package smartflow.userauth;

option go_package = "github.com/LoveLosita/smartflow/backend/services/userauth/rpc/pb";

service UserAuth {
  rpc Register(RegisterRequest) returns (RegisterResponse);
  rpc Login(LoginRequest) returns (TokensResponse);
  rpc RefreshToken(RefreshTokenRequest) returns (TokensResponse);
  rpc Logout(LogoutRequest) returns (StatusResponse);
  rpc ValidateAccessToken(ValidateAccessTokenRequest) returns (ValidateAccessTokenResponse);
  rpc CheckTokenQuota(CheckTokenQuotaRequest) returns (CheckTokenQuotaResponse);
  rpc AdjustTokenUsage(AdjustTokenUsageRequest) returns (CheckTokenQuotaResponse);
}

message RegisterRequest {
  string username = 1;
  string password = 2;
  string phone_number = 3;
}

message RegisterResponse {
  uint64 id = 1;
}

message LoginRequest {
  string username = 1;
  string password = 2;
}

message TokensResponse {
  string access_token = 1;
  string refresh_token = 2;
}

message RefreshTokenRequest {
  string refresh_token = 1;
}

message LogoutRequest {
  string access_token = 1;
}

message StatusResponse {
}

message ValidateAccessTokenRequest {
  string access_token = 1;
}

message ValidateAccessTokenResponse {
  bool valid = 1;
  int64 user_id = 2;
  string token_type = 3;
  string jti = 4;
  int64 expires_at_unix_nano = 5;
}

message CheckTokenQuotaRequest {
  int64 user_id = 1;
}

message AdjustTokenUsageRequest {
  string event_id = 1;
  int64 user_id = 2;
  int64 token_delta = 3;
}

message CheckTokenQuotaResponse {
  bool allowed = 1;
  int64 token_limit = 2;
  int64 token_usage = 3;
  int64 last_reset_at_unix_nano = 4;
}