Include tags with snippets. Filter by tags. Display tags on single snippet view.

client/src/components/Snippets/SnippetDetails.tsx

@@ -3,7 +3,7 @@ import { useHistory } from 'react-router-dom';
 import { SnippetsContext } from '../../store';
 import { Snippet } from '../../typescript/interfaces';
 import { dateParser } from '../../utils';
-import { Button, Card } from '../UI';
+import { Badge, Button, Card } from '../UI';
 import copy from 'clipboard-copy';
 import { SnippetPin } from './SnippetPin';
 
@@ -15,6 +15,7 @@ export const SnippetDetails = (props: Props): JSX.Element => {
   const {
     title,
     language,
+    tags,
     createdAt,
     updatedAt,
     description,
@@ -61,6 +62,16 @@ export const SnippetDetails = (props: Props): JSX.Element => {
       </div>
       <hr />
 
+      {/* TAGS */}
+      <div>
+        {tags.map(tag => (
+          <span className='me-2'>
+            <Badge text={tag} color='dark' />
+          </span>
+        ))}
+      </div>
+      <hr />
+
       {/* ACTIONS */}
       <div className='d-grid g-2' style={{ rowGap: '10px' }}>
         <Button

client/src/containers/Snippets.tsx

@@ -5,7 +5,7 @@ import { Button, Card, EmptyState, Layout } from '../components/UI';
 import { Snippet } from '../typescript/interfaces';
 
 export const Snippets = (): JSX.Element => {
-  const { snippets, languageCount, getSnippets, countSnippets } =
+  const { snippets, tagCount, getSnippets, countTags } =
     useContext(SnippetsContext);
 
   const [filter, setFilter] = useState<string | null>(null);
@@ -13,16 +13,16 @@ export const Snippets = (): JSX.Element => {
 
   useEffect(() => {
     getSnippets();
-    countSnippets();
+    countTags();
   }, []);
 
   useEffect(() => {
     setLocalSnippets([...snippets]);
   }, [snippets]);
 
-  const filterHandler = (language: string) => {
-    setFilter(language);
-    const filteredSnippets = snippets.filter(s => s.language === language);
+  const filterHandler = (tag: string) => {
+    setFilter(tag);
+    const filteredSnippets = snippets.filter(s => s.tags.includes(tag));
     setLocalSnippets(filteredSnippets);
   };
 
@@ -44,21 +44,21 @@ export const Snippets = (): JSX.Element => {
                 <span>Total</span>
                 <span>{snippets.length}</span>
               </div>
-              <h5 className='card-title'>Filter by language</h5>
+              <h5 className='card-title'>Filter by tags</h5>
               <Fragment>
-                {languageCount.map((el, idx) => {
-                  const isActiveFilter = filter === el.language;
+                {tagCount.map((tag, idx) => {
+                  const isActiveFilter = filter === tag.name;
 
                   return (
                     <div
+                      key={idx}
                       className={`d-flex justify-content-between cursor-pointer ${
                         isActiveFilter && 'text-dark fw-bold'
                       }`}
-                      key={idx}
-                      onClick={() => filterHandler(el.language)}
+                      onClick={() => filterHandler(tag.name)}
                     >
-                      <span>{el.language}</span>
-                      <span>{el.count}</span>
+                      <span>{tag.name}</span>
+                      <span>{tag.count}</span>
                     </div>
                   );
                 })}

client/src/store/SnippetsContext.tsx

@@ -5,14 +5,14 @@ import {
   Context,
   Snippet,
   Response,
-  LanguageCount,
+  TagCount,
   NewSnippet
 } from '../typescript/interfaces';
 
 export const SnippetsContext = createContext<Context>({
   snippets: [],
   currentSnippet: null,
-  languageCount: [],
+  tagCount: [],
   getSnippets: () => {},
   getSnippetById: (id: number) => {},
   setSnippet: (id: number) => {},
@@ -20,7 +20,7 @@ export const SnippetsContext = createContext<Context>({
   updateSnippet: (snippet: NewSnippet, id: number, isLocal?: boolean) => {},
   deleteSnippet: (id: number) => {},
   toggleSnippetPin: (id: number) => {},
-  countSnippets: () => {}
+  countTags: () => {}
 });
 
 interface Props {
@@ -30,7 +30,7 @@ interface Props {
 export const SnippetsContextProvider = (props: Props): JSX.Element => {
   const [snippets, setSnippets] = useState<Snippet[]>([]);
   const [currentSnippet, setCurrentSnippet] = useState<Snippet | null>(null);
-  const [languageCount, setLanguageCount] = useState<LanguageCount[]>([]);
+  const [tagCount, setTagCount] = useState<TagCount[]>([]);
 
   const history = useHistory();
 
@@ -132,17 +132,17 @@ export const SnippetsContextProvider = (props: Props): JSX.Element => {
     }
   };
 
-  const countSnippets = (): void => {
+  const countTags = (): void => {
     axios
-      .get<Response<LanguageCount[]>>('/api/snippets/statistics/count')
-      .then(res => setLanguageCount(res.data.data))
+      .get<Response<TagCount[]>>('/api/snippets/statistics/count')
+      .then(res => setTagCount(res.data.data))
       .catch(err => redirectOnError());
   };
 
   const context = {
     snippets,
     currentSnippet,
-    languageCount,
+    tagCount,
     getSnippets,
     getSnippetById,
     setSnippet,
@@ -150,7 +150,7 @@ export const SnippetsContextProvider = (props: Props): JSX.Element => {
     updateSnippet,
     deleteSnippet,
     toggleSnippetPin,
-    countSnippets
+    countTags
   };
 
   return (

client/src/typescript/interfaces/Context.ts

@@ -1,9 +1,9 @@
-import { LanguageCount, NewSnippet, Snippet } from '.';
+import { TagCount, NewSnippet, Snippet } from '.';
 
 export interface Context {
   snippets: Snippet[];
   currentSnippet: Snippet | null;
-  languageCount: LanguageCount[];
+  tagCount: TagCount[];
   getSnippets: () => void;
   getSnippetById: (id: number) => void;
   setSnippet: (id: number) => void;
@@ -11,5 +11,5 @@ export interface Context {
   updateSnippet: (snippet: NewSnippet, id: number, isLocal?: boolean) => void;
   deleteSnippet: (id: number) => void;
   toggleSnippetPin: (id: number) => void;
-  countSnippets: () => void;
+  countTags: () => void;
 }

client/src/typescript/interfaces/Snippet.ts

@@ -7,7 +7,7 @@ export interface NewSnippet {
   code: string;
   docs?: string;
   isPinned: boolean;
-  tags: string;
+  tags: string[];
 }
 
 export interface Snippet extends Model, NewSnippet {}

client/src/typescript/interfaces/Statistics.ts

@@ -1,4 +1,4 @@
-export interface LanguageCount {
+export interface TagCount {
   count: number;
-  language: string;
+  name: string;
 }

src/controllers/snippets.ts

@@ -2,8 +2,10 @@ import { Request, Response, NextFunction } from 'express';
 import { QueryTypes } from 'sequelize';
 import { sequelize } from '../db';
 import { asyncWrapper } from '../middleware';
-import { SnippetModel } from '../models';
-import { ErrorResponse, tagsParser } from '../utils';
+import { SnippetInstance, SnippetModel } from '../models';
+import { ErrorResponse, getTags, tagsParser, Logger } from '../utils';
+
+const logger = new Logger('snippets-controller');
 
 /**
  * @description Create new snippet
@@ -37,7 +39,22 @@ export const createSnippet = asyncWrapper(
  */
 export const getAllSnippets = asyncWrapper(
   async (req: Request, res: Response, next: NextFunction): Promise<void> => {
-    const snippets = await SnippetModel.findAll();
+    const snippets = await SnippetModel.findAll({
+      raw: true
+    });
+
+    await new Promise<void>(async resolve => {
+      try {
+        for await (let snippet of snippets) {
+          const tags = await getTags(+snippet.id);
+          snippet.tags = tags;
+        }
+      } catch (err) {
+        logger.log('Error while fetching tags');
+      } finally {
+        resolve();
+      }
+    });
 
     res.status(200).json({
       data: snippets
@@ -46,14 +63,15 @@ export const getAllSnippets = asyncWrapper(
 );
 
 /**
- * @description Get single sinppet by id
+ * @description Get single snippet by id
  * @route /api/snippets/:id
  * @request GET
  */
 export const getSnippet = asyncWrapper(
   async (req: Request, res: Response, next: NextFunction): Promise<void> => {
     const snippet = await SnippetModel.findOne({
-      where: { id: req.params.id }
+      where: { id: req.params.id },
+      raw: true
     });
 
     if (!snippet) {
@@ -65,6 +83,9 @@ export const getSnippet = asyncWrapper(
       );
     }
 
+    const tags = await getTags(+req.params.id);
+    snippet.tags = tags;
+
     res.status(200).json({
       data: snippet
     });
@@ -144,19 +165,20 @@ export const deleteSnippet = asyncWrapper(
 );
 
 /**
- * @description Count snippets by language
+ * @description Count tags
  * @route /api/snippets/statistics/count
  * @request GET
  */
-export const countSnippets = asyncWrapper(
+export const countTags = asyncWrapper(
   async (req: Request, res: Response, next: NextFunction): Promise<void> => {
     const result = await sequelize.query(
       `SELECT
-        COUNT(language) AS count,
-        language
-      FROM snippets
-      GROUP BY language
-      ORDER BY language ASC`,
+        COUNT(tags.name) as count,
+        tags.name
+      FROM snippets_tags
+      INNER JOIN tags ON snippets_tags.tag_id = tags.id
+      GROUP BY tags.name
+      ORDER BY name ASC`,
       {
         type: QueryTypes.SELECT
       }

src/db/migrations/02_tags.ts

@@ -76,7 +76,6 @@ export const up = async (queryInterface: QueryInterface): Promise<void> => {
         }
       } catch (err) {
         logger.log('Error while assigning tags to snippets');
-        console.log(err);
       } finally {
         resolve();
       }

src/routes/snippets.ts

@@ -1,6 +1,6 @@
 import { Router } from 'express';
 import {
-  countSnippets,
+  countTags,
   createSnippet,
   deleteSnippet,
   getAllSnippets,
@@ -22,4 +22,4 @@ snippetRouter
   .put(updateSnippet)
   .delete(deleteSnippet);
 
-snippetRouter.route('/statistics/count').get(countSnippets);
+snippetRouter.route('/statistics/count').get(countTags);

src/typescript/interfaces/Snippet.ts

@@ -8,6 +8,7 @@ export interface Snippet extends Model {
   code: string;
   docs: string;
   isPinned: number;
+  tags?: string[];
 }
 
 export interface SnippetCreationAttributes

src/utils/getTags.ts

@@ -0,0 +1,18 @@
+import { sequelize } from '../db';
+import { QueryTypes } from 'sequelize';
+
+export const getTags = async (snippetId: number): Promise<string[]> => {
+  const tags = await sequelize.query<{ name: string }>(
+    `SELECT tags.name
+    FROM tags
+    INNER JOIN
+      snippets_tags ON tags.id = snippets_tags.tag_id
+    INNER JOIN
+      snippets ON snippets.id = snippets_tags.snippet_id
+    WHERE 
+      snippets_tags.snippet_id = ${snippetId};`,
+    { type: QueryTypes.SELECT }
+  );
+
+  return tags.map(tag => tag.name);
+};

src/utils/index.ts

@@ -1,3 +1,4 @@
 export * from './Logger';
 export * from './ErrorResponse';
 export * from './tagsParser';
+export * from './getTags';