feat: add withPersistence state, change theme state

This commit is contained in:
2026-02-11 11:46:13 +05:00
parent bfca034ec8
commit 9e1eeb57bc
14 changed files with 438 additions and 328 deletions
+21 -8
View File
@@ -1,11 +1,24 @@
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
%sveltekit.head%
</head>
<body data-sveltekit-preload-data="hover">
<div style="display: contents">%sveltekit.body%</div>
</body>
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<script>
(function () {
try {
const saved = localStorage.getItem("theme");
if (saved) {
const theme = JSON.parse(saved).theme;
if (theme === "dark") {
document.documentElement.setAttribute("data-theme", "dark");
}
}
} catch (e) {}
})();
</script>
%sveltekit.head%
</head>
<body data-sveltekit-preload-data="hover">
<div style="display: contents">%sveltekit.body%</div>
</body>
</html>
+2 -2
View File
@@ -12,8 +12,8 @@
<div class="header-content">
<h1>Twitch Panels</h1>
<button class="theme-toggle" aria-label="Toggle theme" onclick={toggleTheme}>
<Sun />
<Moon />
<Sun class="sun-icon" />
<Moon class="moon-icon" />
</button>
</div>
</header>
+7
View File
@@ -66,4 +66,11 @@ export const TextAlign = {
export type TextAlignType = (typeof TextAlign)[keyof typeof TextAlign];
export const DEFAULT_TEXT_ALIGN: TextAlignType = TextAlign.CENTER;
export const Theme = {
DARK: "dark",
LIGHT: "light",
} as const;
export type ThemeType = (typeof Theme)[keyof typeof Theme];
export const TRANSITION_DURATION = import.meta.env.MODE === "test" ? 0 : 300;
+1 -2
View File
@@ -10,9 +10,8 @@
}
$effect(() => {
const newTheme = themeState.theme;
const newTheme = themeState.current;
document.documentElement.setAttribute("data-theme", newTheme);
localStorage.setItem("theme", newTheme);
});
let { children }: Props = $props();
+48
View File
@@ -0,0 +1,48 @@
import { browser } from "$app/environment";
export const STATE_DATA = Symbol("state-data");
export const DEBOUNCE_DURATION = import.meta.env.MODE === "test" ? 0 : 500;
type OnlyData<T> = {
[K in keyof T as T[K] extends Function ? never : K]: T[K];
};
export interface Persistable<D> {
[STATE_DATA]: D;
}
export function withPersistence<D extends object, T extends Persistable<D>>(
key: string,
state: T,
debounceMs = DEBOUNCE_DURATION,
): T {
if (!browser) return state;
const saved = localStorage.getItem(key);
if (saved) {
try {
const parsed = JSON.parse(saved);
if (parsed) {
state[STATE_DATA] = parsed;
}
} catch (e) {
console.error(`Error repairing state for ${key}`, e);
}
}
$effect.root(() => {
$effect(() => {
const data = JSON.stringify($state.snapshot(state[STATE_DATA]));
if (debounceMs > 0) {
const timeout = setTimeout(() => localStorage.setItem(key, data), debounceMs);
return () => clearTimeout(timeout);
} else {
localStorage.setItem(key, data);
}
});
});
return state;
}
+21 -2
View File
@@ -1,5 +1,6 @@
import type { TextAlignType } from "$lib/constants";
import { type TextAlignType } from "$lib/constants";
import type { HexColor } from "$lib/types";
import { STATE_DATA, withPersistence } from "./persisted.svelte";
export type TextConfig = {
fontSize: number;
@@ -58,7 +59,25 @@ function createState() {
set offsetY(offsetY: number) {
state.offsetY = offsetY;
},
get [STATE_DATA]() {
return {
fontSize: state.fontSize,
fontFamily: state.fontFamily,
color: state.color,
align: state.align,
paddingX: state.paddingX,
offsetY: state.offsetY,
};
},
set [STATE_DATA](newConfig: TextConfig) {
state.fontSize = newConfig.fontSize;
state.fontFamily = newConfig.fontFamily;
state.color = newConfig.color;
state.align = newConfig.align;
state.paddingX = newConfig.paddingX;
state.offsetY = newConfig.offsetY;
},
};
}
export const textConfigState = createState();
export const textConfigState = withPersistence("text-config", createState());
+10 -1
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@@ -1,3 +1,5 @@
import { STATE_DATA, withPersistence } from "./persisted.svelte";
export interface TextItem {
text: string;
id: number;
@@ -25,7 +27,14 @@ export function createState() {
texts = [];
nextId = 0;
},
get [STATE_DATA]() {
return texts.map(({ text }) => text);
},
set [STATE_DATA](newTexts: Array<string>) {
texts = newTexts.map((text, idx) => ({ text, id: idx }));
nextId = newTexts.length;
},
};
}
export const textsState = createState();
export const textsState = withPersistence("texts", createState());
+15 -6
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@@ -1,19 +1,28 @@
export type Theme = "dark" | "light";
import { Theme, type ThemeType } from "$lib/constants";
import { STATE_DATA, withPersistence } from "./persisted.svelte";
function createState() {
let current: Theme = $state("dark");
let current: ThemeType = $state(Theme.LIGHT);
return {
get theme() {
get current() {
return current;
},
set theme(value: Theme) {
set current(value: ThemeType) {
current = value;
},
toggle() {
current = current === "dark" ? "light" : "dark";
current = current === Theme.DARK ? Theme.LIGHT : Theme.DARK;
},
get [STATE_DATA]() {
return {
current,
};
},
set [STATE_DATA](data: { current: ThemeType }) {
current = data.current;
},
};
}
export const themeState = createState();
export const themeState = withPersistence("theme", createState());