From 3c29a51699e734df9138a4cb047836ded52bf6f7 Mon Sep 17 00:00:00 2001
From: jsapro <77.3.77@mail.ru>
Date: Tue, 16 Jan 2024 13:32:56 +0300
Subject: [PATCH] feat: add promocode to checkout page

---
 src/pages/checkout/checkout.module.scss      | 14 ++++
 src/pages/checkout/index.tsx                 | 84 ++++++++++++++++++--
 src/services/api.ts                          | 12 +++
 src/services/generated-api/data-contracts.ts |  4 +
 4 files changed, 109 insertions(+), 5 deletions(-)

diff --git a/src/pages/checkout/checkout.module.scss b/src/pages/checkout/checkout.module.scss
index da31378d..f6f21909 100644
--- a/src/pages/checkout/checkout.module.scss
+++ b/src/pages/checkout/checkout.module.scss
@@ -150,6 +150,20 @@
 	}
 }
 
+.summary__promoError {
+	min-height: 20px;
+	text-align: center;
+	color: $error-color;
+	font-size: 13px;
+	font-weight: 300;
+	line-height: 140%;
+
+	@media screen and (width <= 768px) {
+		font-size: 12px;
+		min-height: 17px;
+	}
+}
+
 .summary__sale {
 	max-height: 56px;
 	display: flex;
diff --git a/src/pages/checkout/index.tsx b/src/pages/checkout/index.tsx
index 4de63605..46b604a9 100644
--- a/src/pages/checkout/index.tsx
+++ b/src/pages/checkout/index.tsx
@@ -30,6 +30,23 @@ enum paymentMethodEnum {
 	online = 'Online',
 }
 
+type Promo = {
+	code: string;
+	conditions: string;
+	discount: number;
+	discount_amount: number;
+	end_time: null;
+	id: number;
+	image: null;
+	is_active: boolean;
+	is_constant: boolean;
+	name: string;
+	new_total_price: number;
+	promotion_type: string;
+	slug: string;
+	start_time: string;
+};
+
 const Checkout: React.FC = () => {
 	const { isLoggedIn, user } = useAuth();
 	const { loadCartData, cartData } = useCart();
@@ -46,6 +63,25 @@ const Checkout: React.FC = () => {
 	const [comment, setComment] = React.useState<string>('');
 	const [popupText, setPopupText] = useState('');
 	const [isAgreed, setIsAgreed] = useState(false);
+	const [promocodeError, setPromocodeError] = useState('');
+	const [inputPromoValue, setInputPromoValue] = useState('');
+	const discountInitial = {
+		code: '',
+		conditions: '',
+		discount: 0,
+		discount_amount: 0,
+		end_time: null,
+		id: 0,
+		image: null,
+		is_active: false,
+		is_constant: false,
+		name: '',
+		new_total_price: 0,
+		promotion_type: '',
+		slug: '',
+		start_time: '',
+	};
+	const [discount, setDiscount] = useState<Promo>(discountInitial);
 
 	const openInfoPopup = (text: string) => {
 		setPopupText(text);
@@ -141,6 +177,25 @@ const Checkout: React.FC = () => {
 				}
 			});
 	};
+
+	const handleDiscount = (e: React.MouseEvent<HTMLButtonElement>) => {
+		api
+			.usersShoppingCartCouponApply({ code: inputPromoValue })
+			.then((data) => {
+				setDiscount(data);
+				setPromocodeError('');
+			})
+			.catch((error) => {
+				setDiscount(discountInitial);
+				setPromocodeError(error.errors[0].detail);
+			});
+		e.preventDefault();
+	};
+
+	const handleInputPromoChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+		setInputPromoValue(e.target.value);
+	};
+
 	const handlePaymentChange = (event: React.ChangeEvent<HTMLInputElement>) => {
 		setSelectedPayment(event.target.value);
 	};
@@ -446,9 +501,11 @@ const Checkout: React.FC = () => {
 						<div className={styles.pricelist}>
 							<div className={styles.pricelist__item}>
 								<p className={`text_type_u ${styles.summary__title}`}>Товары</p>
-								<p
-									className={`text_type_u ${styles.pricelist__price}`}
-								>{`${cartData.total_price} руб.`}</p>
+								<p className={`text_type_u ${styles.pricelist__price}`}>{`${
+									discount && discount.discount !== 0
+										? discount.new_total_price
+										: cartData.total_price
+								} руб.`}</p>
 							</div>
 							<div className={styles.pricelist__item}>
 								<p className={`text_type_u ${styles.summary__title}`}>Упаковка</p>
@@ -460,15 +517,32 @@ const Checkout: React.FC = () => {
 								</p>
 								<p className={`text_type_u ${styles.pricelist__price}`}>0 руб.</p>
 							</div>
+							<div className={styles.pricelist__item}>
+								<p className={`text_type_u ${styles.summary__title}`}>Скидка</p>
+								<p className={`text_type_u ${styles.pricelist__price}`}>
+									{discount ? discount.discount_amount : 0} руб.
+								</p>
+							</div>
 							<hr className={styles.pricelist__divider} />
 						</div>
 					</div>
 					<div className={styles.summary__promo}>
 						<p className={`text_type_u`}>Промокод</p>
 						<form className={styles.summary__sale} noValidate>
-							<input type="text" className={`${styles.summary__input_type_sale}`}></input>
-							<button className={`${styles.summary__btn_type_submit}`}>Применить</button>
+							<input
+								value={inputPromoValue}
+								onChange={handleInputPromoChange}
+								type="text"
+								className={`${styles.summary__input_type_sale}`}
+							></input>
+							<button
+								className={`${styles.summary__btn_type_submit}`}
+								onClick={(e) => handleDiscount(e)}
+							>
+								Применить
+							</button>
 						</form>
+						<span className={styles.summary__promoError}>{promocodeError}</span>
 					</div>
 					<div className={styles.orderse}>
 						<button
diff --git a/src/services/api.ts b/src/services/api.ts
index 25364268..b57c2c0c 100644
--- a/src/services/api.ts
+++ b/src/services/api.ts
@@ -21,6 +21,7 @@ import type {
 	ReviewCreate,
 	ReviewUpdate,
 	Payment,
+	Coupon,
 } from './generated-api/data-contracts';
 import { BACKEND_URL } from '@data/constants.ts';
 import Cookies from 'js-cookie';
@@ -330,6 +331,17 @@ class Api {
 		});
 	}
 
+	usersShoppingCartCouponApply(data: Coupon) {
+		return this._request(`shopping_cart/coupon_apply/`, {
+			method: 'POST',
+			credentials: 'include',
+			headers: {
+				'Content-Type': 'application/json',
+			},
+			body: JSON.stringify(data),
+		});
+	}
+
 	/* ----------------------------- Products ----------------------------- */
 	productsList(slug: string) {
 		const headers: HeadersInit = {
diff --git a/src/services/generated-api/data-contracts.ts b/src/services/generated-api/data-contracts.ts
index 47d3ec3b..2b30dd97 100644
--- a/src/services/generated-api/data-contracts.ts
+++ b/src/services/generated-api/data-contracts.ts
@@ -1133,3 +1133,7 @@ export interface OrderCheck {
 export type Payment = {
 	stripe_session_id: string;
 };
+
+export interface Coupon {
+	code: string;
+}