add: Megalodon, initial mastodon api

packages/backend/src/server/api/mastodon/endpoints/meta.ts

@@ -0,0 +1,63 @@
+import { Entity } from "megalodon";
+import { MAX_NOTE_TEXT_LENGTH, FILE_TYPE_BROWSERSAFE } from "@/const.js";
+import type { Config } from '@/config.js';
+import type { MiMeta } from "@/models/Meta.js";
+
+export async function getInstance(
+	response: Entity.Instance,
+	contact: Entity.Account,
+    config: Config,
+    meta: MiMeta,
+) {
+	return {
+		uri: config.url,
+		title: meta.name || "Sharkey",
+		short_description:
+			meta.description?.substring(0, 50) || "See real server website",
+		description:
+			meta.description ||
+			"This is a vanilla Sharkey Instance. It doesn't seem to have a description.",
+		email: response.email || "",
+		version: `3.0.0 (compatible; Sharkey ${config.version})`,
+		urls: response.urls,
+		stats: {
+			user_count: response.stats.user_count,
+			status_count: response.stats.status_count,
+			domain_count: response.stats.domain_count,
+		},
+		thumbnail: meta.backgroundImageUrl || "/static-assets/transparent.png",
+		languages: meta.langs,
+		registrations: !meta.disableRegistration || response.registrations,
+		approval_required: !response.registrations,
+		invites_enabled: response.registrations,
+		configuration: {
+			accounts: {
+				max_featured_tags: 20,
+			},
+			statuses: {
+				max_characters: MAX_NOTE_TEXT_LENGTH,
+				max_media_attachments: 16,
+				characters_reserved_per_url: response.uri.length,
+			},
+			media_attachments: {
+				supported_mime_types: FILE_TYPE_BROWSERSAFE,
+				image_size_limit: 10485760,
+				image_matrix_limit: 16777216,
+				video_size_limit: 41943040,
+				video_frame_rate_limit: 60,
+				video_matrix_limit: 2304000,
+			},
+			polls: {
+				max_options: 10,
+				max_characters_per_option: 50,
+				min_expiration: 50,
+				max_expiration: 2629746,
+			},
+			reactions: {
+				max_reactions: 1,
+			},
+		},
+		contact_account: contact,
+		rules: [],
+	};
+}