package db

import (
	"context"
	"database/sql"
	"testing"
	"time"

	"git.nochill.in/nochill/nice_pos/util"
	"github.com/google/uuid"
	"github.com/stretchr/testify/require"
)

func createRandomProduct(t *testing.T) (Product, CreateProductParams) {

	sellingPrice, _ := util.RandomFloat(999, 99999)
	purchasePrice, _ := util.RandomFloat(999, 9999)
	stock, _ := util.RandomFloat(10, 10000)

	arg := CreateProductParams{
		MerchantID:    uuid.MustParse("1f81d072-0c98-4e7e-9ceb-233d2eadb674"),
		Name:          util.RandomString(10),
		SellingPrice:  sellingPrice,
		PurchasePrice: purchasePrice,
		Stock:         stock,
	}

	product, err := testQueries.CreateProduct(context.Background(), arg)
	require.NoError(t, err)

	return product, arg

}

func TestCreateProduct(t *testing.T) {
	product, arg := createRandomProduct(t)
	require.NotEmpty(t, product)

	require.Equal(t, arg.Name, product.Name)
	require.Equal(t, arg.MerchantID, product.MerchantID)
	require.Equal(t, arg.SellingPrice, product.SellingPrice)
	require.Equal(t, arg.PurchasePrice, product.PurchasePrice)
	require.Equal(t, arg.Stock, product.Stock)

	require.NotZero(t, product.ID)
	require.NotZero(t, product.CreatedAt)
	require.NotZero(t, product.UpdatedAt)
}

func TestGetProduct(t *testing.T) {
	createProduct, _ := createRandomProduct(t)
	getProduct, err := testQueries.GetProduct(context.Background(), createProduct.ID)

	require.NoError(t, err)
	require.NotEmpty(t, getProduct)

	require.Equal(t, createProduct.ID, getProduct.ID)
	require.Equal(t, createProduct.MerchantID, getProduct.MerchantID)
	require.Equal(t, createProduct.Name, getProduct.Name)
	require.Equal(t, createProduct.PurchasePrice, getProduct.PurchasePrice)
	require.Equal(t, createProduct.SellingPrice, getProduct.SellingPrice)
	require.Equal(t, createProduct.Stock, getProduct.Stock)

	require.WithinDuration(t, createProduct.CreatedAt.Time, getProduct.CreatedAt.Time, time.Second)
	require.WithinDuration(t, createProduct.UpdatedAt.Time, getProduct.UpdatedAt.Time, time.Second)
}

func TestUpdateProduct(t *testing.T) {
	createProduct, _ := createRandomProduct(t)
	getProduct, err := testQueries.GetProduct(context.Background(), createProduct.ID)

	require.NoError(t, err)

	arg := UpdateProductParams{
		ID:            getProduct.ID,
		Name:          util.RandomString(6),
		SellingPrice:  float64(200),
		PurchasePrice: float64(200),
		Stock:         float64(200),
	}

	updatedProduct, err := testQueries.UpdateProduct(context.Background(), arg)

	require.NotEmpty(t, updatedProduct)
	require.NoError(t, err)

	require.Equal(t, arg.ID, updatedProduct.ID)
	require.Equal(t, arg.Name, updatedProduct.Name)
	require.Equal(t, arg.PurchasePrice, updatedProduct.PurchasePrice)
	require.Equal(t, arg.SellingPrice, updatedProduct.SellingPrice)
	require.Equal(t, arg.Stock, updatedProduct.Stock)

	require.NotSame(t, createProduct.Name, updatedProduct.Name)
	require.NotSame(t, createProduct.SellingPrice, updatedProduct.SellingPrice)
	require.NotSame(t, createProduct.PurchasePrice, updatedProduct.PurchasePrice)
	require.NotSame(t, createProduct.Stock, updatedProduct.Stock)
}

func TestDeleteProduct(t *testing.T) {
	product1, _ := createRandomProduct(t)
	err := testQueries.DeleteProduct(context.Background(), product1.ID)
	require.NoError(t, err)

	product2, err := testQueries.GetProduct(context.Background(), product1.ID)
	require.Error(t, err)
	require.EqualError(t, err, sql.ErrNoRows.Error())
	require.Empty(t, product2)
}

func TestGetProducts(t *testing.T) {
	for i := 0; i < 6; i++ {
		createRandomProduct(t)
	}

	arg := ListProductsParams{
		Limit:  5,
		Offset: 5,
	}

	products, err := testQueries.ListProducts(context.Background(), arg)
	require.NoError(t, err)
	require.Len(t, products, 5)

	for _, product := range products {
		require.NotEmpty(t, product)
	}

}