import { BaseChannel, DMChannel, User } from '../../structures';
import type { MessageCreateBodyRequest } from '../types/write';
import { BaseShorter } from './base';

export class UsersShorter extends BaseShorter {
	async createDM(userId: string, force = false) {
		if (!force) {
			const dm = await this.client.cache.channels?.get(userId);
			if (dm) return dm as DMChannel;
		}
		const data = await this.client.proxy.users('@me').channels.post({
			body: { recipient_id: userId },
		});
		await this.client.cache.channels?.set(userId, '@me', data);
		return new DMChannel(this.client, data);
	}

	async deleteDM(userId: string, reason?: string) {
		const res = await this.client.proxy.channels(userId).delete({ reason });
		await this.client.cache.channels?.removeIfNI(BaseChannel.__intent__('@me'), res.id, '@me');
		return new DMChannel(this.client, res);
	}

	async fetch(userId: string, force = false) {
		if (!force) {
			const user = await this.client.cache.users?.get(userId);
			if (user) return user;
		}

		const data = await this.client.proxy.users(userId).get();
		await this.client.cache.users?.patch(userId, data);
		return new User(this.client, data);
	}

	async write(userId: string, body: MessageCreateBodyRequest) {
		return (await this.client.users.createDM(userId)).messages.write(body);
	}

	get users() {
		return {
			createDM: async (userId: string, force = false) => {
				if (!force) {
					const dm = await this.client.cache.channels?.get(userId);
					if (dm) return dm as DMChannel;
				}
				const data = await this.client.proxy.users('@me').channels.post({
					body: { recipient_id: userId },
				});
				await this.client.cache.channels?.set(userId, '@me', data);
				return new DMChannel(this.client, data);
			},
			deleteDM: async (userId: string, reason?: string) => {
				const res = await this.client.proxy.channels(userId).delete({ reason });
				await this.client.cache.channels?.removeIfNI(BaseChannel.__intent__('@me'), res.id, '@me');
				return new DMChannel(this.client, res);
			},
			fetch: async (userId: string, force = false) => {
				if (!force) {
					const user = await this.client.cache.users?.get(userId);
					if (user) return user;
				}

				const data = await this.client.proxy.users(userId).get();
				await this.client.cache.users?.patch(userId, data);
				return new User(this.client, data);
			},
			write: async (userId: string, body: MessageCreateBodyRequest) => {
				return (await this.client.users.createDM(userId)).messages.write(body);
			},
		};
	}
}