feat: implement unselect all functionality

src/components/buttons/buttons.module.css

@@ -25,12 +25,16 @@
     line-height: 0;
     outline: none;
 
+    &:disabled {
+      cursor: default;
+    }
+
     & span {
       font-size: var(--font-lg);
     }
   }
 
-  & .shuffleButton {
+  & .smallButton {
     display: flex;
     width: 45px;
     height: 45px;
@@ -47,5 +51,24 @@
     font-size: var(--font-md);
     line-height: 0;
     outline: none;
+    transition: 0.2s;
+
+    &:disabled {
+      cursor: default;
+    }
+
+    &.restore {
+      border-top-color: #34d399;
+      border-bottom-color: #047857;
+      background-color: #10b981;
+      color: var(--color-foreground);
+    }
+
+    &.delete {
+      border-top-color: #fb7185;
+      border-bottom-color: #be123c;
+      background-color: #f43f5e;
+      color: var(--color-foreground);
+    }
   }
 }

src/components/buttons/buttons.tsx

@@ -1,15 +1,18 @@
 import { useEffect } from 'react';
-import { BiPause, BiPlay, BiShuffle } from 'react-icons/bi/index';
+import { BiPause, BiPlay, BiUndo, BiTrash } from 'react-icons/bi/index';
 
 import { useSoundStore } from '@/store';
 import { usePlay } from '@/contexts/play';
+import { cn } from '@/helpers/styles';
 
 import styles from './buttons.module.css';
 
 export function Buttons() {
-  const { isPlaying, pause, play, toggle } = usePlay();
+  const { isPlaying, pause, toggle } = usePlay();
   const noSelected = useSoundStore(state => state.noSelected());
-  const shuffle = useSoundStore(state => state.shuffle);
+  const restoreHistory = useSoundStore(state => state.restoreHistory);
+  const hasHistory = useSoundStore(state => !!state.history);
+  const unselectAll = useSoundStore(state => state.unselectAll);
 
   const handleClick = () => {
     if (noSelected) return pause();
@@ -23,7 +26,11 @@ export function Buttons() {
 
   return (
     <div className={styles.buttons}>
-      <button className={styles.playButton} onClick={handleClick}>
+      <button
+        className={styles.playButton}
+        disabled={noSelected}
+        onClick={handleClick}
+      >
         {isPlaying ? (
           <>
             <span>
@@ -42,14 +49,20 @@ export function Buttons() {
       </button>
 
       <button
-        aria-label="Shuffle Sounds"
+        disabled={noSelected && !hasHistory}
-        className={styles.shuffleButton}
+        aria-label={
+          hasHistory ? 'Restore Unselected Sounds' : 'Unselect All Sounds'
+        }
+        className={cn(
+          styles.smallButton,
+          hasHistory ? styles.restore : styles.delete,
+        )}
         onClick={() => {
-          shuffle();
+          if (hasHistory) restoreHistory();
-          play();
+          else if (!noSelected) unselectAll(true);
         }}
       >
-        <BiShuffle />
+        {hasHistory ? <BiUndo /> : <BiTrash />}
       </button>
     </div>
   );

src/helpers/random.ts

@@ -1,26 +0,0 @@
-export function random(min: number, max: number): number {
-  return Math.random() * (max - min) + min;
-}
-
-export function randomInt(min: number, max: number): number {
-  return Math.floor(random(min, max));
-}
-
-export function pickOne<T>(array: Array<T>): T {
-  const randomIndex = random(0, array.length);
-
-  return array[randomIndex];
-}
-
-export function shuffle<T>(array: Array<T>): Array<T> {
-  return array
-    .map(value => ({ sort: Math.random(), value }))
-    .sort((a, b) => a.sort - b.sort)
-    .map(({ value }) => value);
-}
-
-export function pickMany<T>(array: Array<T>, count: number): Array<T> {
-  const shuffled = shuffle(array);
-
-  return shuffled.slice(0, count);
-}

src/store/sound/index.ts

@@ -12,6 +12,7 @@ export const useSoundStore = create<SoundState & SoundActions>()(
     }),
     {
       name: 'moodist-sounds',
+      partialize: state => ({ sounds: state.sounds }),
       skipHydration: true,
       storage: createJSONStorage(() => localStorage),
       version: 0,

src/store/sound/sound.actions.ts

@@ -2,14 +2,12 @@ import type { StateCreator } from 'zustand';
 
 import type { SoundState } from './sound.state';
 
-import { pickMany, random } from '@/helpers/random';
-
 export interface SoundActions {
   select: (id: string) => void;
   unselect: (id: string) => void;
   setVolume: (id: string, volume: number) => void;
-  unselectAll: () => void;
+  unselectAll: (pushToHistory?: boolean) => void;
-  shuffle: () => void;
+  restoreHistory: () => void;
 }
 
 export const createActions: StateCreator<
@@ -19,6 +17,14 @@ export const createActions: StateCreator<
   SoundActions
 > = (set, get) => {
   return {
+    restoreHistory() {
+      const history = get().history;
+
+      if (!history) return;
+
+      set({ history: null, sounds: history });
+    },
+
     select(id) {
       set({
         sounds: {
@@ -37,21 +43,6 @@ export const createActions: StateCreator<
       });
     },
 
-    shuffle() {
-      get().unselectAll();
-
-      const sounds = get().sounds;
-      const ids = Object.keys(sounds);
-      const randomIDs = pickMany(ids, 4);
-
-      randomIDs.forEach(id => {
-        sounds[id].isSelected = true;
-        sounds[id].volume = random(0.2, 0.8);
-      });
-
-      set({ sounds });
-    },
-
     unselect(id) {
       set({
         sounds: {
@@ -61,8 +52,18 @@ export const createActions: StateCreator<
       });
     },
 
-    unselectAll() {
+    unselectAll(pushToHistory = false) {
+      const noSelected = get().noSelected();
+
+      if (noSelected) return;
+
       const sounds = get().sounds;
+
+      if (pushToHistory) {
+        const history = JSON.parse(JSON.stringify(sounds));
+        set({ history });
+      }
+
       const ids = Object.keys(sounds);
 
       ids.forEach(id => {

src/store/sound/sound.state.ts

@@ -11,6 +11,12 @@ export interface SoundState {
       volume: number;
     };
   };
+  history: {
+    [id: string]: {
+      isSelected: boolean;
+      volume: number;
+    };
+  } | null;
   noSelected: () => boolean;
 }
 
@@ -21,13 +27,13 @@ export const createState: StateCreator<
   SoundState
 > = (set, get) => {
   const state: SoundState = {
+    history: null,
     noSelected() {
       const { sounds } = get();
       const keys = Object.keys(sounds);
 
       return keys.every(key => !sounds[key].isSelected);
     },
-
     sounds: {},
   };