udb 0.2.1

//! Live end-to-end test of the notification event pipeline:
//! notification service → transactional outbox → CDC engine → Apache Kafka
//! (the same Kafka the Spark `*_events_streaming` job consumes).
//!
//! Run (after `docker compose -f docker-compose.integration.yml up -d --wait
//! postgres kafka`):
//!   UDB_LIVE_AUTH_TESTS=1 UDB_INTEGRATION_KAFKA_BROKERS=localhost:59192 \
//!     cargo test --lib notification_events_live -- --ignored --nocapture

use super::support::*;
use crate::proto::udb::core::notification::entity::v1 as notif_entity_pb;
use crate::proto::udb::core::notification::services::v1 as notif_pb;
use crate::proto::udb::core::notification::services::v1::notification_service_server::NotificationService;
use crate::runtime::cdc::{CdcConfig, CdcEngine};
use crate::runtime::metrics::NoopMetrics;
use std::sync::Arc;
use std::time::Duration;
use tonic::Request;
use uuid::Uuid;

fn kafka_brokers() -> String {
    std::env::var("UDB_INTEGRATION_KAFKA_BROKERS")
        .or_else(|_| std::env::var("UDB_KAFKA_BROKERS"))
        .unwrap_or_else(|_| "localhost:59192".to_string())
}

#[tokio::test]
#[ignore = "requires live Postgres + Kafka; topic udb.notification.sent.v1 must exist. \
            UDB_LIVE_AUTH_TESTS=1 UDB_INTEGRATION_KAFKA_BROKERS=localhost:59192 \
            cargo test --lib notification_events_live -- --ignored --nocapture"]
async fn notification_event_outbox_to_cdc_to_kafka_end_to_end() {
    use rdkafka::consumer::{BaseConsumer, Consumer};
    use rdkafka::{ClientConfig, Message};
    use rdkafka::{Offset, TopicPartitionList};

    let _guard = live_auth_db_lock().lock().await;
    let pool = live_pg_pool().await;
    migrate_native_auth_db(&pool).await;
    ensure_outbox_table(&pool).await;

    // Real notification service wired to the real outbox (no in-memory double).
    let tenant_id = seed_default_tenant(&pool).await;
    let authn = authn_service(pool.clone());
    let user = create_verified_user(&authn, "notify_evt", "CorrectHorse1!").await;
    seed_notification_subscriptions(&pool, &user.user_id, &tenant_id).await;
    let svc = notification_service_with_outbox(pool.clone());

    svc.upsert_template(Request::new(notif_pb::UpsertTemplateRequest {
        event_type: "invoice.created".to_string(),
        channel: notif_entity_pb::NotificationChannel::Email as i32,
        locale: "en".to_string(),
        subject_template: "Invoice".to_string(),
        body_template: "Body".to_string(),
        is_active: true,
        ..Default::default()
    }))
    .await
    .expect("upsert template");

    // ── Assumption 1: SendNotification emits to the outbox ─────────────────
    let sent = svc
        .send_notification(Request::new(notif_pb::SendNotificationRequest {
            event_type: "invoice.created".to_string(),
            recipient_id: user.user_id.clone(),
            recipient_address: user.email.clone(),
            tenant_id: tenant_id.clone(),
            channels: vec![notif_entity_pb::NotificationChannel::Email as i32],
            ..Default::default()
        }))
        .await
        .expect("send notification")
        .into_inner();
    assert_eq!(sent.logs.len(), 1);

    let (event_id, topic, partition_key, payload): (Uuid, String, String, serde_json::Value) =
        sqlx::query_as(
            "SELECT event_id, topic, partition_key, payload FROM udb_system.outbox_events \
             WHERE topic = $1 ORDER BY event_seq DESC LIMIT 1",
        )
        .bind("udb.notification.sent.v1")
        .fetch_one(&pool)
        .await
        .expect("outbox row written by send_notification");
    assert_eq!(topic, "udb.notification.sent.v1");
    assert_eq!(partition_key, user.user_id, "partition key = recipient id");
    assert_eq!(payload["event_type"], "udb.notification.sent.v1");
    assert_eq!(payload["event_id"], event_id.to_string());
    assert_eq!(payload["payload"]["recipient_id"], user.user_id);
    assert_eq!(payload["payload"]["tenant_id"], tenant_id);

    // ── Assumption 2: the CDC engine publishes the outbox row to Kafka ─────
    let brokers = kafka_brokers();
    ensure_kafka_topic(&brokers, "udb.notification.sent.v1").await;
    let cdc_config = CdcConfig {
        outbox_table: "outbox_events".to_string(),
        ..CdcConfig::default()
    };
    let engine = CdcEngine::new(
        pool.clone(),
        None,
        &brokers,
        live_pg_dsn(),
        Arc::new(NoopMetrics),
        cdc_config,
    )
    .expect("build CDC engine");
    engine
        .process_outbox_event(
            event_id,
            topic.clone(),
            partition_key.clone(),
            payload.clone(),
            chrono::Utc::now(),
            0,
            None,
        )
        .await;
    let (kafka_partition, kafka_offset): (i32, i64) = sqlx::query_as(
        "SELECT kafka_partition, kafka_offset FROM udb_system.udb_cdc_event_journal \
         WHERE event_id = $1",
    )
    .bind(event_id)
    .fetch_one(&pool)
    .await
    .expect("CDC journal row with Kafka offset");

    // ── Assumption 2 (confirm): the event is on the Kafka topic ────────────
    let consumer: BaseConsumer = ClientConfig::new()
        .set("bootstrap.servers", &brokers)
        .set(
            "group.id",
            format!("udb-notif-evt-{}", Uuid::new_v4().simple()),
        )
        .set("auto.offset.reset", "earliest")
        .set("enable.auto.commit", "false")
        .create()
        .expect("kafka consumer");
    let mut assignment = TopicPartitionList::new();
    assignment
        .add_partition_offset(
            "udb.notification.sent.v1",
            kafka_partition,
            Offset::Offset(kafka_offset),
        )
        .expect("assign exact Kafka offset");
    consumer
        .assign(&assignment)
        .expect("assign Kafka partition");

    let mut found = false;
    for _ in 0..40 {
        if let Some(result) = consumer.poll(Duration::from_millis(500)) {
            let msg = result.expect("kafka message");
            if let Some(bytes) = msg.payload() {
                let value: serde_json::Value =
                    serde_json::from_slice(bytes).unwrap_or(serde_json::Value::Null);
                if value["event_id"] == event_id.to_string() {
                    assert_eq!(value["event_type"], "udb.notification.sent.v1");
                    assert_eq!(value["payload"]["recipient_id"], user.user_id);
                    found = true;
                    break;
                }
            }
        }
    }
    assert!(
        found,
        "the NotificationSent event must reach Kafka topic udb.notification.sent.v1"
    );

    cleanup_native_auth_db(&pool).await;
    let _ = sqlx::query("DROP TABLE IF EXISTS udb_system.outbox_events CASCADE")
        .execute(&pool)
        .await;
}