//go:build integration

package userproduct_test

import (
	"context"
	"testing"

	"github.com/food-ai/backend/internal/domain/userproduct"
	"github.com/food-ai/backend/internal/testutil"
)

func TestUserProductRepository_Create_Defaults(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := userproduct.NewRepository(pool)
	requestContext := context.Background()

	// storage_days=0 → 7; unit="" → "pcs"; quantity=0 → 1
	created, createError := repo.Create(requestContext, "test-user", userproduct.CreateRequest{
		Name:        "Milk",
		StorageDays: 0,
		Unit:        "",
		Quantity:    0,
	})
	if createError != nil {
		t.Fatalf("create user product: %v", createError)
	}
	if created.StorageDays != 7 {
		t.Errorf("expected storage_days=7, got %d", created.StorageDays)
	}
	if created.Unit != "pcs" {
		t.Errorf("expected unit=pcs, got %q", created.Unit)
	}
	if created.Quantity != 1 {
		t.Errorf("expected quantity=1, got %v", created.Quantity)
	}
}

func TestUserProductRepository_List_OrderByExpiry(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := userproduct.NewRepository(pool)
	requestContext := context.Background()

	userID := "list-order-user"
	_, createError := repo.Create(requestContext, userID, userproduct.CreateRequest{Name: "Milk", StorageDays: 14})
	if createError != nil {
		t.Fatalf("create Milk: %v", createError)
	}
	_, createError = repo.Create(requestContext, userID, userproduct.CreateRequest{Name: "Butter", StorageDays: 3})
	if createError != nil {
		t.Fatalf("create Butter: %v", createError)
	}

	products, listError := repo.List(requestContext, userID)
	if listError != nil {
		t.Fatalf("list user products: %v", listError)
	}
	if len(products) != 2 {
		t.Fatalf("expected 2 products, got %d", len(products))
	}
	// Butter (3 days) should come before Milk (14 days).
	if products[0].Name != "Butter" {
		t.Errorf("expected first product Butter (expires sooner), got %q", products[0].Name)
	}
}

func TestUserProductRepository_BatchCreate(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := userproduct.NewRepository(pool)
	requestContext := context.Background()

	products, batchError := repo.BatchCreate(requestContext, "batch-user", []userproduct.CreateRequest{
		{Name: "Eggs", Quantity: 12, Unit: "pcs"},
		{Name: "Flour", Quantity: 500, Unit: "g"},
	})
	if batchError != nil {
		t.Fatalf("batch create: %v", batchError)
	}
	if len(products) != 2 {
		t.Errorf("expected 2 products, got %d", len(products))
	}
}

func TestUserProductRepository_Update_NotFound(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := userproduct.NewRepository(pool)
	requestContext := context.Background()

	newName := "Ghost"
	_, updateError := repo.Update(requestContext, "00000000-0000-0000-0000-000000000000", "any-user",
		userproduct.UpdateRequest{Name: &newName})
	if updateError != userproduct.ErrNotFound {
		t.Errorf("expected ErrNotFound, got %v", updateError)
	}
}

func TestUserProductRepository_Delete_WrongUser(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := userproduct.NewRepository(pool)
	requestContext := context.Background()

	created, createError := repo.Create(requestContext, "owner-user", userproduct.CreateRequest{Name: "Cheese"})
	if createError != nil {
		t.Fatalf("create user product: %v", createError)
	}

	deleteError := repo.Delete(requestContext, created.ID, "other-user")
	if deleteError != userproduct.ErrNotFound {
		t.Errorf("expected ErrNotFound when deleting another user's product, got %v", deleteError)
	}
}

func TestUserProductRepository_ListForPrompt(t *testing.T) {
	pool := testutil.SetupTestDB(t)
	repo := userproduct.NewRepository(pool)
	requestContext := context.Background()

	userID := "prompt-user"
	_, createError := repo.Create(requestContext, userID, userproduct.CreateRequest{
		Name: "Tomatoes", Quantity: 4, Unit: "pcs", StorageDays: 5,
	})
	if createError != nil {
		t.Fatalf("create user product: %v", createError)
	}

	lines, listError := repo.ListForPrompt(requestContext, userID)
	if listError != nil {
		t.Fatalf("list for prompt: %v", listError)
	}
	if len(lines) != 1 {
		t.Fatalf("expected 1 line, got %d", len(lines))
	}
	// Line should start with "- Tomatoes".
	if len(lines[0]) < 11 || lines[0][:11] != "- Tomatoes " {
		t.Errorf("unexpected prompt line format: %q", lines[0])
	}
}