1 files changed, 116 insertions, 0 deletions
diff --git a/packages/frontend/src/utility/misskey-api.ts b/packages/frontend/src/utility/misskey-api.ts
new file mode 100644
index 0000000000..dc07ad477b
--- /dev/null
+++ b/packages/frontend/src/utility/misskey-api.ts
@@ -0,0 +1,116 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import * as Misskey from 'misskey-js';
+import { ref } from 'vue';
+import { apiUrl } from '@@/js/config.js';
+import { $i } from '@/account.js';
+export const pendingApiRequestsCount = ref(0);
+
+export type Endpoint = keyof Misskey.Endpoints;
+
+export type Request<E extends Endpoint> = Misskey.Endpoints[E]['req'];
+
+export type AnyRequest<E extends Endpoint | (string & unknown)> =
+	(E extends Endpoint ? Request<E> : never) | object;
+
+export type Response<E extends Endpoint | (string & unknown), P extends AnyRequest<E>> =
+	E extends Endpoint
+	? P extends Request<E> ? Misskey.api.SwitchCaseResponseType<E, P> : never
+	: object;
+
+// Implements Misskey.api.ApiClient.request
+export function misskeyApi<
+	ResT = void,
+	E extends Endpoint | NonNullable<string> = Endpoint,
+	P extends AnyRequest<E> = E extends Endpoint ? Request<E> : never,
+	_ResT = ResT extends void ? Response<E, P> : ResT,
+>(
+	endpoint: E,
+	data: P & { i?: string | null; } = {} as any,
+	token?: string | null | undefined,
+	signal?: AbortSignal,
+): Promise<_ResT> {
+	if (endpoint.includes('://')) throw new Error('invalid endpoint');
+	pendingApiRequestsCount.value++;
+
+	const onFinally = () => {
+		pendingApiRequestsCount.value--;
+	};
+
+	const promise = new Promise<_ResT>((resolve, reject) => {
+		// Append a credential
+		if ($i) data.i = $i.token;
+		if (token !== undefined) data.i = token;
+
+		// Send request
+		window.fetch(`${apiUrl}/${endpoint}`, {
+			method: 'POST',
+			body: JSON.stringify(data),
+			credentials: 'omit',
+			cache: 'no-cache',
+			headers: {
+				'Content-Type': 'application/json',
+			},
+			signal,
+		}).then(async (res) => {
+			const body = res.status === 204 ? null : await res.json();
+
+			if (res.status === 200) {
+				resolve(body);
+			} else if (res.status === 204) {
+				resolve(undefined as _ResT); // void -> undefined
+			} else {
+				reject(body.error);
+			}
+		}).catch(reject);
+	});
+
+	promise.then(onFinally, onFinally);
+
+	return promise;
+}
+
+// Implements Misskey.api.ApiClient.request
+export function misskeyApiGet<
+	ResT = void,
+	E extends keyof Misskey.Endpoints = keyof Misskey.Endpoints,
+	P extends Misskey.Endpoints[E]['req'] = Misskey.Endpoints[E]['req'],
+	_ResT = ResT extends void ? Misskey.api.SwitchCaseResponseType<E, P> : ResT,
+>(
+	endpoint: E,
+	data: P = {} as any,
+): Promise<_ResT> {
+	pendingApiRequestsCount.value++;
+
+	const onFinally = () => {
+		pendingApiRequestsCount.value--;
+	};
+
+	const query = new URLSearchParams(data as any);
+
+	const promise = new Promise<_ResT>((resolve, reject) => {
+		// Send request
+		window.fetch(`${apiUrl}/${endpoint}?${query}`, {
+			method: 'GET',
+			credentials: 'omit',
+			cache: 'default',
+		}).then(async (res) => {
+			const body = res.status === 204 ? null : await res.json();
+
+			if (res.status === 200) {
+				resolve(body);
+			} else if (res.status === 204) {
+				resolve(undefined as _ResT); // void -> undefined
+			} else {
+				reject(body.error);
+			}
+		}).catch(reject);
+	});
+
+	promise.then(onFinally, onFinally);
+
+	return promise;
+}