feat: build core API, fraud engine, notifier, and frontend

Phase 1 — Core API (Go):
- Events, guests, tokens, RSVPs CRUD on PostgreSQL via pgx/v5
- HMAC-signed per-guest tokens with format validation
- Health endpoint with DB ping, slog JSON logging, graceful shutdown

Phase 2 — NATS + Fraud Engine:
- NATS JetStream pub/sub with explicit-ack consumers
- Python/FastAPI fraud engine with heuristic risk scoring
  (fingerprint mismatch, IP change, missing signals, repeated access)
- gRPC sync scoring with 250ms fail-open timeout
- Per-guest baseline tracking; risk bands low/medium/high/block

Phase 3 — Notifications + Frontend:
- Notification worker scaffolding (Twilio/SES stubs, retry/backoff)
- Nuxt 3 frontend with Tailwind dark theme + brand green
- Live monitor via WebSocket with auto-reconnect
- Activity history endpoint backfills monitor with RSVPs +
  scored access checks (including blocked attempts)

UX polish:
- Marketing-friendly landing page (hero mockup, how-it-works,
  features, use cases, testimonials, FAQ, final CTA)
- Animated layered card mockups on landing + new-event page
- Plus-ones stepper, RSVP status badges, filter buttons
- Friendly access-check labels (Verified/Review/Suspicious/Blocked)
- Dashboard hydration fix via ClientOnly wrapper

Infrastructure:
- docker-compose for full local dev (postgres, nats, api,
  fraud-engine, notifier, frontend)
- Multi-stage Dockerfiles, non-root UID 1000
- Integration tests with testcontainers-go

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Kwaku Danso
2026-05-11 21:08:56 +01:00
parent f760fc3e21
commit 3f8bc58ca9
89 changed files with 22729 additions and 0 deletions
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# -*- coding: utf-8 -*-
# Generated by the protocol buffer compiler. DO NOT EDIT!
# NO CHECKED-IN PROTOBUF GENCODE
# source: fraud/v1/fraud.proto
# Protobuf Python Version: 6.31.1
"""Generated protocol buffer code."""
from google.protobuf import descriptor as _descriptor
from google.protobuf import descriptor_pool as _descriptor_pool
from google.protobuf import runtime_version as _runtime_version
from google.protobuf import symbol_database as _symbol_database
from google.protobuf.internal import builder as _builder
_runtime_version.ValidateProtobufRuntimeVersion(
_runtime_version.Domain.PUBLIC,
6,
31,
1,
'',
'fraud/v1/fraud.proto'
)
# @@protoc_insertion_point(imports)
_sym_db = _symbol_database.Default()
DESCRIPTOR = _descriptor_pool.Default().AddSerializedFile(b'\n\x14\x66raud/v1/fraud.proto\x12\x13guestguard.fraud.v1\"\x92\x02\n\x0cScoreRequest\x12\x10\n\x08\x65vent_id\x18\x01 \x01(\t\x12\x10\n\x08guest_id\x18\x02 \x01(\t\x12\x10\n\x08token_id\x18\x03 \x01(\t\x12\x15\n\raccess_log_id\x18\x04 \x01(\t\x12G\n\x0b\x66ingerprint\x18\x05 \x03(\x0b\x32\x32.guestguard.fraud.v1.ScoreRequest.FingerprintEntry\x12\x12\n\nip_address\x18\x06 \x01(\t\x12\x12\n\nuser_agent\x18\x07 \x01(\t\x12\x10\n\x08referrer\x18\x08 \x01(\t\x1a\x32\n\x10\x46ingerprintEntry\x12\x0b\n\x03key\x18\x01 \x01(\t\x12\r\n\x05value\x18\x02 \x01(\t:\x02\x38\x01\"X\n\rScoreResponse\x12\r\n\x05score\x18\x01 \x01(\x05\x12\'\n\x04risk\x18\x02 \x01(\x0e\x32\x19.guestguard.fraud.v1.Risk\x12\x0f\n\x07reasons\x18\x03 \x03(\t*Z\n\x04Risk\x12\x14\n\x10RISK_UNSPECIFIED\x10\x00\x12\x0c\n\x08RISK_LOW\x10\x01\x12\x0f\n\x0bRISK_MEDIUM\x10\x02\x12\r\n\tRISK_HIGH\x10\x03\x12\x0e\n\nRISK_BLOCK\x10\x04\x32^\n\x0c\x46raudService\x12N\n\x05Score\x12!.guestguard.fraud.v1.ScoreRequest\x1a\".guestguard.fraud.v1.ScoreResponseB=Z;github.com/alchemistkay/guestguard/internal/fraudpb;fraudpbb\x06proto3')
_globals = globals()
_builder.BuildMessageAndEnumDescriptors(DESCRIPTOR, _globals)
_builder.BuildTopDescriptorsAndMessages(DESCRIPTOR, 'fraud.v1.fraud_pb2', _globals)
if not _descriptor._USE_C_DESCRIPTORS:
_globals['DESCRIPTOR']._loaded_options = None
_globals['DESCRIPTOR']._serialized_options = b'Z;github.com/alchemistkay/guestguard/internal/fraudpb;fraudpb'
_globals['_SCOREREQUEST_FINGERPRINTENTRY']._loaded_options = None
_globals['_SCOREREQUEST_FINGERPRINTENTRY']._serialized_options = b'8\001'
_globals['_RISK']._serialized_start=412
_globals['_RISK']._serialized_end=502
_globals['_SCOREREQUEST']._serialized_start=46
_globals['_SCOREREQUEST']._serialized_end=320
_globals['_SCOREREQUEST_FINGERPRINTENTRY']._serialized_start=270
_globals['_SCOREREQUEST_FINGERPRINTENTRY']._serialized_end=320
_globals['_SCORERESPONSE']._serialized_start=322
_globals['_SCORERESPONSE']._serialized_end=410
_globals['_FRAUDSERVICE']._serialized_start=504
_globals['_FRAUDSERVICE']._serialized_end=598
# @@protoc_insertion_point(module_scope)
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from google.protobuf.internal import containers as _containers
from google.protobuf.internal import enum_type_wrapper as _enum_type_wrapper
from google.protobuf import descriptor as _descriptor
from google.protobuf import message as _message
from collections.abc import Iterable as _Iterable, Mapping as _Mapping
from typing import ClassVar as _ClassVar, Optional as _Optional, Union as _Union
DESCRIPTOR: _descriptor.FileDescriptor
class Risk(int, metaclass=_enum_type_wrapper.EnumTypeWrapper):
__slots__ = ()
RISK_UNSPECIFIED: _ClassVar[Risk]
RISK_LOW: _ClassVar[Risk]
RISK_MEDIUM: _ClassVar[Risk]
RISK_HIGH: _ClassVar[Risk]
RISK_BLOCK: _ClassVar[Risk]
RISK_UNSPECIFIED: Risk
RISK_LOW: Risk
RISK_MEDIUM: Risk
RISK_HIGH: Risk
RISK_BLOCK: Risk
class ScoreRequest(_message.Message):
__slots__ = ("event_id", "guest_id", "token_id", "access_log_id", "fingerprint", "ip_address", "user_agent", "referrer")
class FingerprintEntry(_message.Message):
__slots__ = ("key", "value")
KEY_FIELD_NUMBER: _ClassVar[int]
VALUE_FIELD_NUMBER: _ClassVar[int]
key: str
value: str
def __init__(self, key: _Optional[str] = ..., value: _Optional[str] = ...) -> None: ...
EVENT_ID_FIELD_NUMBER: _ClassVar[int]
GUEST_ID_FIELD_NUMBER: _ClassVar[int]
TOKEN_ID_FIELD_NUMBER: _ClassVar[int]
ACCESS_LOG_ID_FIELD_NUMBER: _ClassVar[int]
FINGERPRINT_FIELD_NUMBER: _ClassVar[int]
IP_ADDRESS_FIELD_NUMBER: _ClassVar[int]
USER_AGENT_FIELD_NUMBER: _ClassVar[int]
REFERRER_FIELD_NUMBER: _ClassVar[int]
event_id: str
guest_id: str
token_id: str
access_log_id: str
fingerprint: _containers.ScalarMap[str, str]
ip_address: str
user_agent: str
referrer: str
def __init__(self, event_id: _Optional[str] = ..., guest_id: _Optional[str] = ..., token_id: _Optional[str] = ..., access_log_id: _Optional[str] = ..., fingerprint: _Optional[_Mapping[str, str]] = ..., ip_address: _Optional[str] = ..., user_agent: _Optional[str] = ..., referrer: _Optional[str] = ...) -> None: ...
class ScoreResponse(_message.Message):
__slots__ = ("score", "risk", "reasons")
SCORE_FIELD_NUMBER: _ClassVar[int]
RISK_FIELD_NUMBER: _ClassVar[int]
REASONS_FIELD_NUMBER: _ClassVar[int]
score: int
risk: Risk
reasons: _containers.RepeatedScalarFieldContainer[str]
def __init__(self, score: _Optional[int] = ..., risk: _Optional[_Union[Risk, str]] = ..., reasons: _Optional[_Iterable[str]] = ...) -> None: ...
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# Generated by the gRPC Python protocol compiler plugin. DO NOT EDIT!
"""Client and server classes corresponding to protobuf-defined services."""
import grpc
import warnings
from fraud.v1 import fraud_pb2 as fraud_dot_v1_dot_fraud__pb2
GRPC_GENERATED_VERSION = '1.80.0'
GRPC_VERSION = grpc.__version__
_version_not_supported = False
try:
from grpc._utilities import first_version_is_lower
_version_not_supported = first_version_is_lower(GRPC_VERSION, GRPC_GENERATED_VERSION)
except ImportError:
_version_not_supported = True
if _version_not_supported:
raise RuntimeError(
f'The grpc package installed is at version {GRPC_VERSION},'
+ ' but the generated code in fraud/v1/fraud_pb2_grpc.py depends on'
+ f' grpcio>={GRPC_GENERATED_VERSION}.'
+ f' Please upgrade your grpc module to grpcio>={GRPC_GENERATED_VERSION}'
+ f' or downgrade your generated code using grpcio-tools<={GRPC_VERSION}.'
)
class FraudServiceStub(object):
"""Missing associated documentation comment in .proto file."""
def __init__(self, channel):
"""Constructor.
Args:
channel: A grpc.Channel.
"""
self.Score = channel.unary_unary(
'/guestguard.fraud.v1.FraudService/Score',
request_serializer=fraud_dot_v1_dot_fraud__pb2.ScoreRequest.SerializeToString,
response_deserializer=fraud_dot_v1_dot_fraud__pb2.ScoreResponse.FromString,
_registered_method=True)
class FraudServiceServicer(object):
"""Missing associated documentation comment in .proto file."""
def Score(self, request, context):
"""Missing associated documentation comment in .proto file."""
context.set_code(grpc.StatusCode.UNIMPLEMENTED)
context.set_details('Method not implemented!')
raise NotImplementedError('Method not implemented!')
def add_FraudServiceServicer_to_server(servicer, server):
rpc_method_handlers = {
'Score': grpc.unary_unary_rpc_method_handler(
servicer.Score,
request_deserializer=fraud_dot_v1_dot_fraud__pb2.ScoreRequest.FromString,
response_serializer=fraud_dot_v1_dot_fraud__pb2.ScoreResponse.SerializeToString,
),
}
generic_handler = grpc.method_handlers_generic_handler(
'guestguard.fraud.v1.FraudService', rpc_method_handlers)
server.add_generic_rpc_handlers((generic_handler,))
server.add_registered_method_handlers('guestguard.fraud.v1.FraudService', rpc_method_handlers)
# This class is part of an EXPERIMENTAL API.
class FraudService(object):
"""Missing associated documentation comment in .proto file."""
@staticmethod
def Score(request,
target,
options=(),
channel_credentials=None,
call_credentials=None,
insecure=False,
compression=None,
wait_for_ready=None,
timeout=None,
metadata=None):
return grpc.experimental.unary_unary(
request,
target,
'/guestguard.fraud.v1.FraudService/Score',
fraud_dot_v1_dot_fraud__pb2.ScoreRequest.SerializeToString,
fraud_dot_v1_dot_fraud__pb2.ScoreResponse.FromString,
options,
channel_credentials,
insecure,
call_credentials,
compression,
wait_for_ready,
timeout,
metadata,
_registered_method=True)