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 || 'This is a vanilla Sharkey Instance. It doesn\'t seem to have a description.',
		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: meta.approvalRequiredForSignup,
		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: [],
	};
}