import type {
	IDataObject,
	IExecuteFunctions,
	IHttpRequestMethods,
	ILoadOptionsFunctions,
	INodeProperties,
	IRequestOptions,
	JsonObject,
} from 'n8n-workflow';
import { NodeApiError } from 'n8n-workflow';

import { getGoogleAccessToken } from '../GenericFunctions';

export async function googleApiRequest(
	this: IExecuteFunctions | ILoadOptionsFunctions,
	method: IHttpRequestMethods,
	resource: string,

	body: any = {},
	qs: IDataObject = {},
	uri?: string,
	noCredentials = false,
	encoding?: null | undefined,
): Promise<any> {
	const options: IRequestOptions = {
		headers: {
			'Content-Type': 'application/json',
		},
		method,
		body,
		qs,
		uri: uri || `https://chat.googleapis.com${resource}`,
		json: true,
	};

	if (Object.keys(body as IDataObject).length === 0) {
		delete options.body;
	}

	if (encoding === null) {
		options.encoding = null;
	}

	let responseData: IDataObject | undefined;
	try {
		if (noCredentials) {
			responseData = await this.helpers.request(options);
		} else {
			const credentials = await this.getCredentials('googleApi');

			const { access_token } = await getGoogleAccessToken.call(this, credentials, 'chat');
			options.headers!.Authorization = `Bearer ${access_token}`;
			responseData = await this.helpers.request(options);
		}
	} catch (error) {
		if (error.code === 'ERR_OSSL_PEM_NO_START_LINE') {
			error.statusCode = '401';
		}

		throw new NodeApiError(this.getNode(), error as JsonObject);
	}
	if (Object.keys(responseData as IDataObject).length !== 0) {
		return responseData;
	} else {
		return { success: true };
	}
}

export async function googleApiRequestAllItems(
	this: IExecuteFunctions | ILoadOptionsFunctions,
	propertyName: string,
	method: IHttpRequestMethods,
	endpoint: string,

	body: any = {},
	query: IDataObject = {},
): Promise<any> {
	const returnData: IDataObject[] = [];

	let responseData;
	query.pageSize = 100;

	do {
		responseData = await googleApiRequest.call(this, method, endpoint, body, query);
		query.pageToken = responseData.nextPageToken;
		returnData.push.apply(returnData, responseData[propertyName] as IDataObject[]);
	} while (responseData.nextPageToken !== undefined && responseData.nextPageToken !== '');

	return returnData;
}

export function validateJSON(json: string | undefined): any {
	let result;
	try {
		result = JSON.parse(json!);
	} catch (exception) {
		result = undefined;
	}
	return result;
}

export function getPagingParameters(resource: string, operation = 'getAll') {
	const pagingParameters: INodeProperties[] = [
		{
			displayName: 'Return All',
			name: 'returnAll',
			type: 'boolean',
			displayOptions: {
				show: {
					resource: [resource],
					operation: [operation],
				},
			},
			default: false,
			description: 'Whether to return all results or only up to a given limit',
		},
		{
			displayName: 'Limit',
			name: 'limit',
			type: 'number',
			typeOptions: {
				maxValue: 1000,
			},
			displayOptions: {
				show: {
					resource: [resource],
					operation: [operation],
					returnAll: [false],
				},
			},
			default: 100,
			description: 'Max number of results to return',
		},
	];
	return pagingParameters;
}