From 829ab4345366f92e9764b11ee3561395782a381e Mon Sep 17 00:00:00 2001
From: demmyhonore <demmyhonore@gmail.com>
Date: Fri, 30 Apr 2021 14:43:57 +0200
Subject: [PATCH] feat(project): add category filtering to playlist

---
 src/screens/Playlist/Playlist.module.scss | 39 ++++++++----------
 src/screens/Playlist/Playlist.tsx         | 48 ++++++++++++++---------
 src/utils/collection.ts                   | 14 +++++++
 3 files changed, 61 insertions(+), 40 deletions(-)
 create mode 100644 src/utils/collection.ts

diff --git a/src/screens/Playlist/Playlist.module.scss b/src/screens/Playlist/Playlist.module.scss
index 3e7f524e1..a29490995 100644
--- a/src/screens/Playlist/Playlist.module.scss
+++ b/src/screens/Playlist/Playlist.module.scss
@@ -1,27 +1,22 @@
-  .playlist {
-    color: var(--primary-color);
-    font-family: var(--body-alt-font-family);
-    margin-top: 20px;
-    margin-left: 56px;
-    margin-right: 56px;
-    text-align: center;
+.playlist {
+  color: var(--primary-color);
+  font-family: var(--body-alt-font-family);
+  margin-top: 20px;
+  margin-left: 56px;
+  margin-right: 56px;
+  text-align: center;
 
-    @media screen and (max-width: 720px) {
-      margin-left: 12px;
-      margin-right: 12px;
-    }
+  @media screen and (max-width: 720px) {
+    margin-left: 12px;
+    margin-right: 12px;
   }
+}
 
-  .header {
-    display: flex;
-    align-items: center;
+.header {
+  display: flex;
+  align-items: center;
 
-    > * + * {
-      margin-left: 24px;
-    }
-  }
-
-  .grid {
-    display: grid;
-    grid-gap: 8px;
+  > * + * {
+    margin-left: 24px;
   }
+}
diff --git a/src/screens/Playlist/Playlist.tsx b/src/screens/Playlist/Playlist.tsx
index c07453810..75afb6a61 100644
--- a/src/screens/Playlist/Playlist.tsx
+++ b/src/screens/Playlist/Playlist.tsx
@@ -1,16 +1,17 @@
-import React from 'react';
+import React, { useState } from 'react';
 
 import usePlaylist from '../../hooks/usePlaylist';
-import useBreakpoint from '../../hooks/useBreakpoint';
+import { getCategoriesFromPlaylist, filterPlaylistCategory } from '../../utils/collection';
 import Card from '../../components/Card/Card'
+import Dropdown from '../../components/Dropdown/Dropdown'
+import CardGrid from '../../components/CardGrid/CardGrid'
 
 import styles from './Playlist.module.scss';
 
-// temp data
-const cols = { "xs": 2, "sm": 3, "md": 4, "lg": 5, "xl": 6 }
+// TEMP DATA
 const playlistId = "sR5VypYk";
 
-type PlaylistMapArguments = {
+type PlaylistDestructuredArguments = {
     mediaid: string;
     title: string;
     duration: number;
@@ -19,29 +20,40 @@ type PlaylistMapArguments = {
 
 function Playlist() {
     const { isLoading, error, data: { title, playlist } = {} } = usePlaylist(playlistId)
-    const breakpoint = useBreakpoint();
+    const [filter, setFilter] = useState<string>('')
 
     if (isLoading) return <p>Loading...</p>
 
     if (error) return <p>No playlist found...</p>
 
+    const categories = getCategoriesFromPlaylist(playlist)
+    const filteredPlaylist = filterPlaylistCategory(playlist, filter)
+
     return (
         <div className={styles.playlist}>
             <header className={styles.header}>
                 <h2>{title}</h2>
-                <div className={styles.dropdown}>
-                    <select name="categories">
-                        <option value="">All</option>
-                        <option value="some">Some</option>
-                    </select>
-                </div>
+                {categories.length && (
+                    <Dropdown
+                        name="categories"
+                        value={filter}
+                        defaultLabel="All"
+                        options={categories}
+                        setValue={setFilter}
+                    />)}
             </header>
-            <main
-                className={styles.grid}
-                style={{ gridTemplateColumns: `repeat(${cols[breakpoint]}, minmax(0,1fr))` }}
-            >
-                {playlist.map(({ mediaid: mediaId, title, duration, image }: PlaylistMapArguments) =>
-                    <Card key={mediaId} title={title} duration={duration} posterSource={image} onClick={(() => '')} />)}
+            <main>
+                <CardGrid>
+                    {filteredPlaylist.map(({ mediaid: mediaId, title, duration, image }: PlaylistDestructuredArguments) =>
+                    (
+                        <Card
+                            key={mediaId}
+                            title={title}
+                            duration={duration}
+                            posterSource={image}
+                            onClick={(() => '')}
+                        />))}
+                </CardGrid>
             </main>
         </div>
     );
diff --git a/src/utils/collection.ts b/src/utils/collection.ts
new file mode 100644
index 000000000..1195398ee
--- /dev/null
+++ b/src/utils/collection.ts
@@ -0,0 +1,14 @@
+import type { Playlist } from 'types/playlist';
+
+const getCategoriesFromPlaylist = (playlist: Playlist) =>
+    playlist.reduce((categories: string[], item) => categories.includes(item.genre) ? categories : categories.concat(item.genre), [])
+
+
+const filterPlaylistCategory = (playlist: Playlist, filter: string) => {
+    if (!filter) return playlist
+
+    return playlist.filter(({ genre }) => genre === filter)
+
+}
+
+export { getCategoriesFromPlaylist, filterPlaylistCategory }