import { sanitizedRaw } from '@nozbe/watermelondb/RawRecord';

import database from '../database';
import log from '../../utils/log';
import protectedFunction from './helpers/protectedFunction';

export default function() {
	const db = database.active;
	return new Promise(async(resolve) => {
		try {
			// RC 0.60.2
			const result = await this.sdk.get('commands.list');

			if (!result.success) {
				console.log(result);
				return resolve();
			}

			const { commands } = result;

			if (commands && commands.length) {
				await db.action(async() => {
					const slashCommandsCollection = db.get('slash_commands');
					const allSlashCommandsRecords = await slashCommandsCollection.query().fetch();

					// filter slash commands
					let slashCommandsToCreate = commands.filter(i1 => !allSlashCommandsRecords.find(i2 => i1.command === i2.id));
					let slashCommandsToUpdate = allSlashCommandsRecords.filter(i1 => commands.find(i2 => i1.id === i2.command));
					let slashCommandsToDelete = allSlashCommandsRecords
						.filter(i1 => !slashCommandsToCreate.find(i2 => i2.command === i1.id) && !slashCommandsToUpdate.find(i2 => i2.id === i1.id));

					// Create
					slashCommandsToCreate = slashCommandsToCreate.map(command => slashCommandsCollection.prepareCreate(protectedFunction((s) => {
						s._raw = sanitizedRaw({ id: command.command }, slashCommandsCollection.schema);
						Object.assign(s, command);
					})));

					// Update
					slashCommandsToUpdate = slashCommandsToUpdate.map((command) => {
						const newCommand = commands.find(s => s.command === command.id);
						return command.prepareUpdate(protectedFunction((s) => {
							Object.assign(s, newCommand);
						}));
					});

					// Delete
					slashCommandsToDelete = slashCommandsToDelete.map(command => command.prepareDestroyPermanently());

					const allRecords = [
						...slashCommandsToCreate,
						...slashCommandsToUpdate,
						...slashCommandsToDelete
					];

					try {
						await db.batch(...allRecords);
					} catch (e) {
						log(e);
					}
					return allRecords.length;
				});
			}
		} catch (e) {
			log(e);
			return resolve();
		}
	});
}