import type { IDataObject, ILoadOptionsFunctions, INodePropertyOptions } from 'n8n-workflow';

import { checkAccessToGuild } from '../helpers/utils';
import { discordApiRequest } from '../transport';

export async function getRoles(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
	const guildId = this.getNodeParameter('guildId', undefined, {
		extractValue: true,
	}) as string;

	const isOAuth2 = this.getNodeParameter('authentication', '') === 'oAuth2';

	if (isOAuth2) {
		const userGuilds = (await discordApiRequest.call(
			this,
			'GET',
			'/users/@me/guilds',
		)) as IDataObject[];

		checkAccessToGuild(this.getNode(), guildId, userGuilds);
	}

	let response = await discordApiRequest.call(this, 'GET', `/guilds/${guildId}/roles`);

	const operations = this.getNodeParameter('operation') as string;

	if (operations === 'roleRemove') {
		const userId = this.getNodeParameter('userId', undefined, {
			extractValue: true,
		}) as string;

		const userRoles = ((
			await discordApiRequest.call(this, 'GET', `/guilds/${guildId}/members/${userId}`)
		).roles || []) as string[];

		response = response.filter((role: IDataObject) => {
			return userRoles.includes(role.id as string);
		});
	}

	return response
		.filter((role: IDataObject) => role.name !== '@everyone' && !role.managed)
		.map((role: IDataObject) => ({
			name: role.name as string,
			value: role.id as string,
		}));
}