import {
	OptionsWithUri,
} from 'request';

import {
	IExecuteFunctions,
	IHookFunctions,
	ILoadOptionsFunctions,
	IWebhookFunctions,
} from 'n8n-core';

import {
	IDataObject,
} from 'n8n-workflow';

export async function quickbaseApiRequest(this: IExecuteFunctions | ILoadOptionsFunctions | IHookFunctions | IWebhookFunctions, method: string, resource: string, body: any = {}, qs: IDataObject = {}, option: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any

	const credentials = this.getCredentials('quickbaseApi') as IDataObject;

	if (credentials === undefined) {
		throw new Error('No credentials got returned!');
	}

	if (!credentials.hostname) {
		throw new Error('Hostname must be defined');
	}

	if (!credentials.userToken) {
		throw new Error('User Token must be defined');
	}

	try {
		const options: OptionsWithUri = {
			headers: {
				'QB-Realm-Hostname': credentials.hostname,
				'User-Agent': 'n8n',
				'Authorization': `QB-USER-TOKEN ${credentials.userToken}`,
				'Content-Type': 'application/json',
			},
			method,
			body,
			qs,
			uri: `https://api.quickbase.com/v1${resource}`,
			json: true,
		};
		if (Object.keys(body).length === 0) {
			delete options.body;
		}

		if (Object.keys(qs).length === 0) {
			delete options.qs;
		}

		if (Object.keys(option).length !== 0) {
			Object.assign(options, option);
		}
		//@ts-ignore
		return await this.helpers?.request(options);
	} catch (error) {

		if (error.response && error.response.body && error.response.body.description) {

			const message = error.response.body.description;

			// Try to return the error prettier
			throw new Error(
				`Quickbase error response [${error.statusCode}]: ${message} (qb-api-ray=${error.response.headers['qb-api-ray']})`,
			);
		}
		throw error;
	}
}

//@ts-ignore
export async function getFieldsObject(this: IHookFunctions | ILoadOptionsFunctions | IExecuteFunctions, tableId: string): any { // tslint:disable-line:no-any
	const fieldsLabelKey: { [key: string]: number } = {};
	const fieldsIdKey: { [key: number]: string } = {};
	const data = await quickbaseApiRequest.call(this, 'GET', '/fields', {}, { tableId });
	for (const field of data) {
		fieldsLabelKey[field.label] = field.id;
		fieldsIdKey[field.id] = field.label;
	}
	return { fieldsLabelKey, fieldsIdKey };
}

export async function quickbaseApiRequestAllItems(this: IHookFunctions | ILoadOptionsFunctions | IExecuteFunctions, method: string, resource: string, body: any = {}, query: IDataObject = {}): Promise<any> { // tslint:disable-line:no-any

	const returnData: IDataObject[] = [];

	let responseData = [];

	if (method === 'POST') {
		body.options = {
			skip: 0,
			top: 100,
		};
	} else {
		query.skip = 0;
		query.top = 100;
	}

	let metadata;

	do {
		const { data, fields, metadata: meta } = await quickbaseApiRequest.call(this, method, resource, body, query);

		metadata = meta;

		const fieldsIdKey: { [key: string]: string } = {};

		for (const field of fields) {
			fieldsIdKey[field.id] = field.label;
		}

		for (const record of data) {
			const data: IDataObject = {};
			for (const [key, value] of Object.entries(record)) {
				data[fieldsIdKey[key]] = (value as IDataObject).value;
			}
			responseData.push(data);
		}

		if (method === 'POST') {
			body.options.skip += body.options.top;
		} else {
			//@ts-ignore
			query.skip += query.top;
		}
		returnData.push.apply(returnData, responseData);
		responseData = [];
	} while (
		returnData.length < metadata.totalRecords
	);

	return returnData;
}