package raw_events_test

import (
	"context"
	"encoding/json"
	"testing"
	"time"

	"github.com/google/uuid"

	"ruben/inventory2/domains/raw_events"
	"ruben/inventory2/internal/testdb"
)

func TestSaveAndLoadEventsForStore(t *testing.T) {
	pool := testdb.Pool(t)
	store := raw_events.NewStore(testdb.Logger(), pool)
	ctx := context.Background()

	platform := "test-platform"
	storeID := "test-store-" + uuid.NewString()

	t.Cleanup(func() {
		pool.Exec(context.Background(), "DELETE FROM raw_store_events WHERE platform = $1 AND store_id = $2", platform, storeID)
	})

	older := raw_events.Event{
		Platform:       platform,
		StoreID:        storeID,
		EventID:        "evt-1",
		EventTimestamp: time.Now().Add(-time.Hour).UTC(),
		Payload:        json.RawMessage(`{"n":1}`),
	}
	newer := raw_events.Event{
		Platform:       platform,
		StoreID:        storeID,
		EventID:        "evt-2",
		EventTimestamp: time.Now().UTC(),
		Payload:        json.RawMessage(`{"n":2}`),
	}

	if err := store.Save(ctx, &older); err != nil {
		t.Fatalf("Save() older event error = %v", err)
	}
	if err := store.Save(ctx, &newer); err != nil {
		t.Fatalf("Save() newer event error = %v", err)
	}

	got, err := store.LoadEventsForStore(ctx, platform, storeID)
	if err != nil {
		t.Fatalf("LoadEventsForStore() error = %v", err)
	}

	if len(got) != 2 {
		t.Fatalf("LoadEventsForStore() returned %d events, want 2: %+v", len(got), got)
	}

	// ordered event_timestamp DESC - newest first.
	if got[0].EventID != "evt-2" || got[1].EventID != "evt-1" {
		t.Errorf("LoadEventsForStore() order = [%s, %s], want [evt-2, evt-1]", got[0].EventID, got[1].EventID)
	}
	var payload struct{ N int }
	if err := json.Unmarshal(got[0].Payload, &payload); err != nil {
		t.Fatalf("failed to unmarshal LoadEventsForStore()[0].Payload = %s: %v", got[0].Payload, err)
	}
	if payload.N != 2 {
		t.Errorf("LoadEventsForStore()[0].Payload n = %d, want 2", payload.N)
	}
}

func TestLoadEventsForStore_NoEvents(t *testing.T) {
	pool := testdb.Pool(t)
	store := raw_events.NewStore(testdb.Logger(), pool)
	ctx := context.Background()

	got, err := store.LoadEventsForStore(ctx, "test-platform", "no-such-store-"+uuid.NewString())
	if err != nil {
		t.Fatalf("LoadEventsForStore() error = %v", err)
	}
	if len(got) != 0 {
		t.Fatalf("LoadEventsForStore() = %+v, want empty", got)
	}
}