extract SponsorsService, use RedisKVCache

Please someone add types…

packages/backend/src/core/SponsorsService.ts

@@ -0,0 +1,86 @@
+/*
+ * SPDX-FileCopyrightText: marie and other Sharkey contributors
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { Inject, Injectable, OnApplicationShutdown } from '@nestjs/common';
+import * as Redis from 'ioredis';
+import { DI } from '@/di-symbols.js';
+import { MetaService } from '@/core/MetaService.js';
+import { RedisKVCache } from '@/misc/cache.js';
+import { bindThis } from '@/decorators.js';
+
+@Injectable()
+export class SponsorsService implements OnApplicationShutdown {
+	private cache: RedisKVCache<any>;
+
+	constructor(
+    @Inject(DI.redis) private redisClient: Redis.Redis,
+		private metaService: MetaService,
+	) {
+		this.cache = new RedisKVCache<any>(this.redisClient, 'sponsors', {
+			lifetime: 1000 * 60 * 60,
+			memoryCacheLifetime: 1000 * 60,
+			fetcher: (key) => {
+				if (key === 'instance') return this.fetchInstanceSponsors();
+				return this.fetchSharkeySponsors();
+			},
+			toRedisConverter: (value) => JSON.stringify(value),
+			fromRedisConverter: (value) => JSON.parse(value)
+		});
+	}
+
+	@bindThis
+	private async fetchInstanceSponsors() {
+		const meta = await this.metaService.fetch();
+
+		if (!(meta.donationUrl && meta.donationUrl.includes('opencollective.com'))) {
+			return [];
+		}
+
+		try {
+			const backers = await fetch(`${meta.donationUrl}/members/users.json`).then((response) => response.json());
+
+			// Merge both together into one array and make sure it only has Active subscriptions
+			const allSponsors = [...backers].filter(sponsor => sponsor.isActive === true && sponsor.role === 'BACKER' && sponsor.tier);
+
+			// Remove possible duplicates
+			return [...new Map(allSponsors.map(v => [v.profile, v])).values()];
+		} catch (error) {
+			return [];
+		}
+	}
+
+	@bindThis
+	private async fetchSharkeySponsors() {
+		try {
+			const backers = await fetch('https://opencollective.com/sharkey/tiers/backer/all.json').then((response) => response.json());
+			const sponsorsOC = await fetch('https://opencollective.com/sharkey/tiers/sponsor/all.json').then((response) => response.json());
+
+			// Merge both together into one array and make sure it only has Active subscriptions
+			const allSponsors = [...sponsorsOC, ...backers].filter(sponsor => sponsor.isActive === true);
+
+			// Remove possible duplicates
+			return [...new Map(allSponsors.map(v => [v.profile, v])).values()];
+		} catch (error) {
+			return [];
+		}
+	}
+
+	@bindThis
+	public async instanceSponsors(forceUpdate: boolean) {
+		if (forceUpdate) this.cache.refresh('instance');
+		return this.cache.fetch('instance');
+	}
+
+	@bindThis
+	public async sharkeySponsors(forceUpdate: boolean) {
+		if (forceUpdate) this.cache.refresh('sharkey');
+		return this.cache.fetch('sharkey');
+	}
+
+	@bindThis
+	public onApplicationShutdown(signal?: string | undefined): void {
+		this.cache.dispose();
+	}
+}