misskey/packages/frontend/src/instance.ts

63 lines
2.4 KiB
TypeScript

/*
* SPDX-FileCopyrightText: syuilo and misskey-project
* SPDX-License-Identifier: AGPL-3.0-only
*/
import { computed, reactive } from 'vue';
import * as Misskey from 'misskey-js';
import { misskeyApi } from '@/scripts/misskey-api.js';
import { miLocalStorage } from '@/local-storage.js';
import { DEFAULT_INFO_IMAGE_URL, DEFAULT_NOT_FOUND_IMAGE_URL, DEFAULT_SERVER_ERROR_IMAGE_URL } from '@@/js/const.js';
// TODO: 他のタブと永続化されたstateを同期
//#region loader
const providedMetaEl = document.getElementById('misskey_meta');
let cachedMeta = miLocalStorage.getItem('instance') ? JSON.parse(miLocalStorage.getItem('instance')!) : null;
let cachedAt = miLocalStorage.getItem('instanceCachedAt') ? parseInt(miLocalStorage.getItem('instanceCachedAt')!) : 0;
const providedMeta = providedMetaEl && providedMetaEl.textContent ? JSON.parse(providedMetaEl.textContent) : null;
const providedAt = providedMetaEl && providedMetaEl.dataset.generatedAt ? parseInt(providedMetaEl.dataset.generatedAt) : 0;
if (providedAt > cachedAt) {
miLocalStorage.setItem('instance', JSON.stringify(providedMeta));
miLocalStorage.setItem('instanceCachedAt', providedAt.toString());
cachedMeta = providedMeta;
cachedAt = providedAt;
}
//#endregion
// TODO: instanceをリアクティブにするかは再考の余地あり
export const instance: Misskey.entities.MetaDetailed = reactive(cachedMeta ?? {});
export const serverErrorImageUrl = computed(() => instance.serverErrorImageUrl ?? DEFAULT_SERVER_ERROR_IMAGE_URL);
export const infoImageUrl = computed(() => instance.infoImageUrl ?? DEFAULT_INFO_IMAGE_URL);
export const notFoundImageUrl = computed(() => instance.notFoundImageUrl ?? DEFAULT_NOT_FOUND_IMAGE_URL);
export const isEnabledUrlPreview = computed(() => instance.enableUrlPreview ?? true);
export async function fetchInstance(force = false): Promise<Misskey.entities.MetaDetailed> {
if (!force) {
const cachedAt = miLocalStorage.getItem('instanceCachedAt') ? parseInt(miLocalStorage.getItem('instanceCachedAt')!) : 0;
if (Date.now() - cachedAt < 1000 * 60 * 60) {
return instance;
}
}
const meta = await misskeyApi('meta', {
detail: true,
});
for (const [k, v] of Object.entries(meta)) {
instance[k] = v;
}
miLocalStorage.setItem('instance', JSON.stringify(instance));
miLocalStorage.setItem('instanceCachedAt', Date.now().toString());
return instance;
}