From 96a01c6f60b98093ac36aeed6e00b466ee7494fe Mon Sep 17 00:00:00 2001
From: unknown <pawel999@icloud.com>
Date: Wed, 22 Sep 2021 12:57:36 +0200
Subject: [PATCH] Edit and delete snippet functionality

---
 client/src/App.tsx                            |  2 +-
 .../components/Snippets/SnippetDetails.tsx    | 84 +++++++++++++++++++
 .../src/components/Snippets/SnippetForm.tsx   | 42 ++++++++--
 client/src/containers/Editor.tsx              | 32 +++++--
 client/src/store/SnippetsContext.tsx          | 37 ++++++++
 client/src/typescript/interfaces/Context.ts   |  2 +
 6 files changed, 185 insertions(+), 14 deletions(-)
 create mode 100644 client/src/components/Snippets/SnippetDetails.tsx

diff --git a/client/src/App.tsx b/client/src/App.tsx
index c579af9..73dd8e2 100644
--- a/client/src/App.tsx
+++ b/client/src/App.tsx
@@ -12,7 +12,7 @@ export const App = () => {
           <Route exact path='/' component={Home} />
           <Route path='/snippets' component={Snippets} />
           <Route path='/snippet/:id' component={Snippet} />
-          <Route path='/editor' component={Editor} />
+          <Route path='/editor/:id?' component={Editor} />
         </Switch>
       </SnippetsContextProvider>
     </BrowserRouter>
diff --git a/client/src/components/Snippets/SnippetDetails.tsx b/client/src/components/Snippets/SnippetDetails.tsx
new file mode 100644
index 0000000..5f91f40
--- /dev/null
+++ b/client/src/components/Snippets/SnippetDetails.tsx
@@ -0,0 +1,84 @@
+import { useContext } from 'react';
+import { Link } from 'react-router-dom';
+import { SnippetsContext } from '../../store';
+import { Snippet } from '../../typescript/interfaces';
+import { dateParser } from '../../utils';
+import { Button, Card } from '../UI';
+
+interface Props {
+  snippet: Snippet;
+}
+
+export const SnippetDetails = (props: Props): JSX.Element => {
+  const { title, language, createdAt, updatedAt, description, code, id } =
+    props.snippet;
+
+  const { deleteSnippet } = useContext(SnippetsContext);
+
+  const creationDate = dateParser(createdAt);
+  const updateDate = dateParser(updatedAt);
+
+  const copyHandler = () => {
+    navigator.clipboard.writeText(code);
+  };
+
+  return (
+    <Card title={title}>
+      <p>{description}</p>
+
+      {/* LANGUAGE */}
+      <div className={`d-flex justify-content-between`}>
+        <span>Language</span>
+        <span className='fw-bold'>{language}</span>
+      </div>
+
+      {/* CREATED AT */}
+      <div className={`d-flex justify-content-between`}>
+        <span>Created</span>
+        <span>{creationDate.relative}</span>
+      </div>
+
+      {/* UPDATED AT */}
+      <div className={`d-flex justify-content-between`}>
+        <span>Last updated</span>
+        <span>{updateDate.relative}</span>
+      </div>
+
+      <hr />
+
+      {/* ACTIONS */}
+      <div className='d-flex justify-content-between'>
+        <Link
+          to={{
+            pathname: `/editor/${id}`,
+            state: { from: window.location.pathname }
+          }}
+        >
+          <Button text='Edit' color='dark' small outline classes='me-3' />
+        </Link>
+        <Button
+          text='Pin to homescreen'
+          color='dark'
+          small
+          outline
+          handler={copyHandler}
+          classes='me-3'
+        />
+        <Button
+          text='Delete'
+          color='danger'
+          small
+          outline
+          handler={() => deleteSnippet(id)}
+        />
+      </div>
+
+      <hr />
+
+      {/* COPY */}
+      <div className='d-grid'>
+        <Button text='Copy code' color='dark' small handler={copyHandler} />
+      </div>
+    </Card>
+  );
+};
diff --git a/client/src/components/Snippets/SnippetForm.tsx b/client/src/components/Snippets/SnippetForm.tsx
index 9724fde..4fb830f 100644
--- a/client/src/components/Snippets/SnippetForm.tsx
+++ b/client/src/components/Snippets/SnippetForm.tsx
@@ -1,10 +1,23 @@
-import { ChangeEvent, FormEvent, Fragment, useState, useContext } from 'react';
+import {
+  ChangeEvent,
+  FormEvent,
+  Fragment,
+  useState,
+  useContext,
+  useEffect
+} from 'react';
 import { SnippetsContext } from '../../store';
 import { NewSnippet } from '../../typescript/interfaces';
 import { Button, Card } from '../UI';
 
-export const SnippetForm = (): JSX.Element => {
-  const { createSnippet } = useContext(SnippetsContext);
+interface Props {
+  inEdit?: boolean;
+}
+
+export const SnippetForm = (props: Props): JSX.Element => {
+  const { inEdit = false } = props;
+  const { createSnippet, currentSnippet, updateSnippet } =
+    useContext(SnippetsContext);
 
   const [formData, setFormData] = useState<NewSnippet>({
     title: '',
@@ -14,6 +27,14 @@ export const SnippetForm = (): JSX.Element => {
     docs: ''
   });
 
+  useEffect(() => {
+    if (inEdit) {
+      if (currentSnippet) {
+        setFormData({ ...currentSnippet });
+      }
+    }
+  }, [currentSnippet]);
+
   const inputHandler = (
     e: ChangeEvent<HTMLInputElement | HTMLTextAreaElement>
   ) => {
@@ -25,7 +46,14 @@ export const SnippetForm = (): JSX.Element => {
 
   const formHandler = (e: FormEvent) => {
     e.preventDefault();
-    createSnippet(formData);
+
+    if (inEdit) {
+      if (currentSnippet) {
+        updateSnippet(formData, currentSnippet.id);
+      }
+    } else {
+      createSnippet(formData);
+    }
   };
 
   return (
@@ -119,7 +147,11 @@ export const SnippetForm = (): JSX.Element => {
 
             {/* SUBMIT SECTION */}
             <div className='d-grid'>
-              <Button text='Create snippet' color='dark' type='submit' />
+              <Button
+                text={`${inEdit ? 'Update snippet' : 'Create snippet'}`}
+                color='dark'
+                type='submit'
+              />
             </div>
           </form>
         </Card>
diff --git a/client/src/containers/Editor.tsx b/client/src/containers/Editor.tsx
index 1ba8df5..0a5509f 100644
--- a/client/src/containers/Editor.tsx
+++ b/client/src/containers/Editor.tsx
@@ -1,25 +1,41 @@
-import { Fragment } from 'react';
-import { useLocation } from 'react-router-dom';
+import { Fragment, useEffect, useContext, useState } from 'react';
+import { useLocation, useParams } from 'react-router-dom';
 import { SnippetForm } from '../components/Snippets/SnippetForm';
 import { Layout, PageHeader } from '../components/UI';
+import { SnippetsContext } from '../store';
 import { Snippet } from '../typescript/interfaces';
 
-interface Props {
-  snippet?: Snippet;
+interface Params {
+  id?: string;
 }
 
-export const Editor = (props: Props): JSX.Element => {
-  const { snippet } = props;
+export const Editor = (): JSX.Element => {
+  const { setSnippet: setCurrentSnippet } = useContext(SnippetsContext);
+  const [inEdit, setInEdit] = useState(false);
 
   // Get previous location
   const location = useLocation<{ from: string }>();
   const { from } = location.state || '/snippets';
 
+  // Get id
+  const { id } = useParams<Params>();
+
+  // Set snippet
+  useEffect(() => {
+    setCurrentSnippet(-1);
+
+    if (id) {
+      setCurrentSnippet(+id);
+      setInEdit(true);
+    }
+  }, []);
+
   return (
     <Layout>
-      {snippet ? (
+      {inEdit ? (
         <Fragment>
-          <PageHeader title='edit snippet' prevDest={from} />
+          <PageHeader title='Edit snippet' prevDest={from} />
+          <SnippetForm inEdit />
         </Fragment>
       ) : (
         <Fragment>
diff --git a/client/src/store/SnippetsContext.tsx b/client/src/store/SnippetsContext.tsx
index a9bf989..15d44a5 100644
--- a/client/src/store/SnippetsContext.tsx
+++ b/client/src/store/SnippetsContext.tsx
@@ -17,6 +17,8 @@ export const SnippetsContext = createContext<Context>({
   getSnippetById: (id: number) => {},
   setSnippet: (id: number) => {},
   createSnippet: (snippet: NewSnippet) => {},
+  updateSnippet: (snippet: NewSnippet, id: number) => {},
+  deleteSnippet: (id: number) => {},
   countSnippets: () => {}
 });
 
@@ -69,6 +71,39 @@ export const SnippetsContextProvider = (props: Props): JSX.Element => {
       .catch(err => console.log(err));
   };
 
+  const updateSnippet = (snippet: NewSnippet, id: number): void => {
+    axios
+      .put<Response<Snippet>>(`/api/snippets/${id}`, snippet)
+      .then(res => {
+        const oldSnippetIdx = snippets.findIndex(s => s.id === id);
+        setSnippets([
+          ...snippets.slice(0, oldSnippetIdx),
+          res.data.data,
+          ...snippets.slice(oldSnippetIdx + 1)
+        ]);
+        setCurrentSnippet(res.data.data);
+        history.push(`/snippet/${res.data.data.id}`, { from: '/snippets' });
+      })
+      .catch(err => console.log(err));
+  };
+
+  const deleteSnippet = (id: number): void => {
+    if (window.confirm('Are you sure you want to delete this snippet?')) {
+      axios
+        .delete<Response<{}>>(`/api/snippets/${id}`)
+        .then(res => {
+          const deletedSnippetIdx = snippets.findIndex(s => s.id === id);
+          setSnippets([
+            ...snippets.slice(0, deletedSnippetIdx),
+            ...snippets.slice(deletedSnippetIdx + 1)
+          ]);
+          setSnippet(-1);
+          history.push('/snippets');
+        })
+        .catch(err => console.log(err));
+    }
+  };
+
   const countSnippets = (): void => {
     axios
       .get<Response<LanguageCount[]>>('/api/snippets/statistics/count')
@@ -84,6 +119,8 @@ export const SnippetsContextProvider = (props: Props): JSX.Element => {
     getSnippetById,
     setSnippet,
     createSnippet,
+    updateSnippet,
+    deleteSnippet,
     countSnippets
   };
 
diff --git a/client/src/typescript/interfaces/Context.ts b/client/src/typescript/interfaces/Context.ts
index bd99dc1..a386924 100644
--- a/client/src/typescript/interfaces/Context.ts
+++ b/client/src/typescript/interfaces/Context.ts
@@ -8,5 +8,7 @@ export interface Context {
   getSnippetById: (id: number) => void;
   setSnippet: (id: number) => void;
   createSnippet: (snippet: NewSnippet) => void;
+  updateSnippet: (snippet: NewSnippet, id: number) => void;
+  deleteSnippet: (id: number) => void;
   countSnippets: () => void;
 }