import { fetchMeta } from '@/misc/fetch-meta.js';
import { genId } from '@/misc/gen-id.js';
import { SwSubscriptions } from '@/models/index.js';
import define from '@/server/api/define.js';

export const meta = {
	tags: ['account'],

	requireCredential: true,

	description: 'Register to receive push notifications.',

	res: {
		type: 'object',
		optional: false, nullable: false,
		properties: {
			state: {
				type: 'string',
				optional: true, nullable: false,
				enum: ['already-subscribed', 'subscribed'],
			},
			key: {
				type: 'string',
				optional: false, nullable: true,
			},
		},
	},
} as const;

export const paramDef = {
	type: 'object',
	properties: {
		endpoint: { type: 'string' },
		auth: { type: 'string' },
		publickey: { type: 'string' },
	},
	required: ['endpoint', 'auth', 'publickey'],
} as const;

// eslint-disable-next-line import/no-default-export
export default define(meta, paramDef, async (ps, user) => {
	// if already subscribed
	const exist = await SwSubscriptions.countBy({
		userId: user.id,
		endpoint: ps.endpoint,
		auth: ps.auth,
		publickey: ps.publickey,
	});

	const instance = await fetchMeta(true);

	if (exist) {
		return {
			state: 'already-subscribed' as const,
			key: instance.swPublicKey,
		};
	}

	await SwSubscriptions.insert({
		id: genId(),
		createdAt: new Date(),
		userId: user.id,
		endpoint: ps.endpoint,
		auth: ps.auth,
		publickey: ps.publickey,
	});

	return {
		state: 'subscribed' as const,
		key: instance.swPublicKey,
	};
});
