2 files changed, 58 insertions, 12 deletions
diff --git a/packages/frontend/src/scripts/device-kind.ts b/packages/frontend/src/scripts/device-kind.ts
index 7c33f8ccee..7aadb617ca 100644
--- a/packages/frontend/src/scripts/device-kind.ts
+++ b/packages/frontend/src/scripts/device-kind.ts
@@ -3,22 +3,22 @@
  * SPDX-License-Identifier: AGPL-3.0-only
  */
 
-import { defaultStore } from '@/store.js';
-
-await defaultStore.ready;
+export type DeviceKind = 'smartphone' | 'tablet' | 'desktop';
 
 const ua = navigator.userAgent.toLowerCase();
 const isTablet = /ipad/.test(ua) || (/mobile|iphone|android/.test(ua) && window.innerWidth > 700);
 const isSmartphone = !isTablet && /mobile|iphone|android/.test(ua);
 
-const isIPhone = /iphone|ipod/gi.test(ua) && navigator.maxTouchPoints > 1;
-// navigator.platform may be deprecated but this check is still required
-const isIPadOS = navigator.platform === 'MacIntel' && navigator.maxTouchPoints > 1;
-const isIos = /ipad|iphone|ipod/gi.test(ua) && navigator.maxTouchPoints > 1;
+export const DEFAULT_DEVICE_KIND: DeviceKind = (
+	isSmartphone
+		? 'smartphone'
+		: isTablet
+			? 'tablet'
+			: 'desktop'
+);
 
-export const isFullscreenNotSupported = isIPhone || isIos;
+export let deviceKind: DeviceKind = DEFAULT_DEVICE_KIND;
 
-export const deviceKind: 'smartphone' | 'tablet' | 'desktop' = defaultStore.state.overridedDeviceKind ? defaultStore.state.overridedDeviceKind
-	: isSmartphone ? 'smartphone'
-	: isTablet ? 'tablet'
-	: 'desktop';
+export function updateDeviceKind(kind: DeviceKind | null) {
+	deviceKind = kind ?? DEFAULT_DEVICE_KIND;
+}
diff --git a/packages/frontend/src/scripts/fullscreen.ts b/packages/frontend/src/scripts/fullscreen.ts
new file mode 100644
index 0000000000..7a0a018ef3
--- /dev/null
+++ b/packages/frontend/src/scripts/fullscreen.ts
@@ -0,0 +1,46 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+type PartiallyPartial<T, K extends keyof T> = Omit<T, K> & Partial<Pick<T, K>>;
+
+type VideoEl = PartiallyPartial<HTMLVideoElement, 'requestFullscreen'> & {
+	webkitEnterFullscreen?(): void;
+	webkitExitFullscreen?(): void;
+};
+
+type PlayerEl = PartiallyPartial<HTMLElement, 'requestFullscreen'>;
+
+type RequestFullscreenProps = {
+	readonly videoEl: VideoEl;
+	readonly playerEl: PlayerEl;
+	readonly options?: FullscreenOptions | null;
+};
+
+type ExitFullscreenProps = {
+	readonly videoEl: VideoEl;
+};
+
+export const requestFullscreen = ({ videoEl, playerEl, options }: RequestFullscreenProps) => {
+	if (playerEl.requestFullscreen != null) {
+		playerEl.requestFullscreen(options ?? undefined);
+		return;
+	}
+	if (videoEl.webkitEnterFullscreen != null) {
+		videoEl.webkitEnterFullscreen();
+		return;
+	}
+};
+
+export const exitFullscreen = ({ videoEl }: ExitFullscreenProps) => {
+	// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+	if (document.exitFullscreen != null) {
+		document.exitFullscreen();
+		return;
+	}
+	if (videoEl.webkitExitFullscreen != null) {
+		videoEl.webkitExitFullscreen();
+		return;
+	}
+};