From 610584c3ce986cdea431180f545e023cee14d5d2 Mon Sep 17 00:00:00 2001
From: eug-vs <eug-vs@keemail.me>
Date: Sun, 14 Mar 2021 06:30:22 +0300
Subject: feat: implement Product Add/Edit

---
 src/containers/Home.tsx        |  2 +-
 src/containers/Page.tsx        |  2 +-
 src/containers/ProductForm.tsx | 51 ++++++++++++++++++++++++++++++++++++------
 src/containers/Products.tsx    | 20 +++++++++++------
 src/hooks/useAPIClient.ts      | 18 +++++++++++++--
 src/index.tsx                  |  1 +
 6 files changed, 76 insertions(+), 18 deletions(-)

diff --git a/src/containers/Home.tsx b/src/containers/Home.tsx
index f39861a..0deefd1 100644
--- a/src/containers/Home.tsx
+++ b/src/containers/Home.tsx
@@ -1,5 +1,5 @@
 import React from 'react';
-import Page from '../containers/Page';
+import Page from './Page';
 import Button from '../components/Button';
 
 const Home: React.FC = () => (
diff --git a/src/containers/Page.tsx b/src/containers/Page.tsx
index f6ae814..a7c0964 100644
--- a/src/containers/Page.tsx
+++ b/src/containers/Page.tsx
@@ -7,7 +7,7 @@ export interface Action extends ButtonProps {
 }
 
 interface Props {
-  title: string;
+  title?: string;
   actions?: Action[];
 }
 
diff --git a/src/containers/ProductForm.tsx b/src/containers/ProductForm.tsx
index d79b1d1..0d21df9 100644
--- a/src/containers/ProductForm.tsx
+++ b/src/containers/ProductForm.tsx
@@ -1,14 +1,51 @@
 import React from 'react';
-import Page, { Action } from '../containers/Page';
+import { useParams, useHistory } from 'react-router-dom';
+import { Formik, Form, Field } from 'formik';
+import Page, { Action } from './Page';
+import Input from '../components/Input';
+import { useProduct } from '../hooks/useAPIClient';
+import { post, patch } from '../requests';
+
+interface Params {
+  id: string;
+}
 
 const actions: Action[] = [
-  { name: 'Назад', route: '/', variant: 'outlined' },
-  { name: 'Сохранить', route: '/' },
+  { name: 'Назад', variant: 'outlined', route: '..' },
+  { name: 'Сохранить', type: 'submit', form: 'productForm' },
 ];
 
-const ProductForm: React.FC = () => (
-  <Page title="Продукт" actions={actions}>
-  </Page>
-);
+const ProductForm: React.FC = () => {
+  const history = useHistory();
+  const { id } = useParams<Params>();
+  const { data: product } = useProduct(id);
+
+  const onSubmit = (values: any) => {
+    const promise = id
+      ? patch(`/products/${id}`, values)
+      : post('/products', values);
+    return promise.then(() => history.push('/products'));
+  };
+
+  return (
+    <Page title={id ? product?.name : 'Новый товар'} actions={actions}>
+      {(!id || product) && (
+        <Formik
+          initialValues={product || { name: '', price: '' }}
+          onSubmit={onSubmit}
+        >
+          {() => (
+            <Form id="productForm">
+              <div className="max-w-lg">
+                <Field name="name" label="Название" as={Input} />
+                <Field name="price" type="number" label="Цена ($)" as={Input} />
+              </div>
+            </Form>
+          )}
+        </Formik>
+      )}
+    </Page>
+  );
+};
 
 export default ProductForm;
diff --git a/src/containers/Products.tsx b/src/containers/Products.tsx
index 3542df1..0b6ea70 100644
--- a/src/containers/Products.tsx
+++ b/src/containers/Products.tsx
@@ -1,26 +1,32 @@
 import React from 'react';
-import Page from '../containers/Page';
+import { useHistory } from 'react-router-dom';
+import Page from './Page';
 import ListTable from '../components/ListTable';
 import { useProducts } from '../hooks/useAPIClient';
 
 const fields = [
-  { key: '_id', label: 'ID' },
   { key: 'name', label: 'Название' },
-  { key: 'type', label: 'Тип' },
+  { key: 'price', label: 'Цена' },
 ];
 
 const actions = [
-  { name: 'Добавить', route: 'products/add' }
+  { name: 'Добавить', route: 'products/add' },
 ];
 
-const Home: React.FC = () => {
+const Products: React.FC = () => {
+  const history = useHistory();
   const { data: products } = useProducts();
 
+  const handleRowClick = (index: number) => {
+    const product = products && products[index];
+    history.push(`/products/edit/${product?._id}`);
+  };
+
   return (
     <Page title="Товары" actions={actions}>
-      <ListTable items={products} fields={fields} />
+      <ListTable items={products} fields={fields} handleRowClick={handleRowClick} />
     </Page>
   );
 };
 
-export default Home;
+export default Products;
diff --git a/src/hooks/useAPIClient.ts b/src/hooks/useAPIClient.ts
index a27453e..b36cfec 100644
--- a/src/hooks/useAPIClient.ts
+++ b/src/hooks/useAPIClient.ts
@@ -1,4 +1,5 @@
 import useSWR, { responseInterface } from 'swr';
+import _ from 'lodash';
 import { get } from '../requests';
 
 type Response<T> = responseInterface<T, Error>;
@@ -16,6 +17,19 @@ export interface Product {
 
 const fetcher = (endpoint: string) => get(endpoint).then(response => response.data);
 
-export const useProducts = (): Response<Product[]> => {
-  return useSWR('/products', fetcher);
+export const useProducts = (options = {}): Response<Product[]> => {
+  return useSWR('/products', fetcher, options);
 };
+
+export const useProduct = (_id: string): Response<Product> => {
+  const { data: preloadedProducts } = useProducts({ revalidateOnMount: false });
+  const result = useSWR(`/products/${_id}`, fetcher);
+  if (!result.data && result.isValidating) {
+    // If we are waiting for the first result, check if we can maybe
+    // get the data from already cached list for the time-being
+    const product = _.find(preloadedProducts, { _id });
+    return { ...result, data: product };
+  }
+  return result;
+};
+
diff --git a/src/index.tsx b/src/index.tsx
index 4972454..8af383e 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -25,6 +25,7 @@ const App: React.FC = () => (
       <Route exact path="/" component={Home} />
       <Route exact path="/products" component={Products} />
       <Route exact path="/products/add" component={ProductForm} />
+      <Route exact path="/products/edit/:id" component={ProductForm} />
     </Switch>
   </Router>
 );
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