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

import { snakeCase } from 'change-case';

export async function keapApiRequest(
	this: IWebhookFunctions | IHookFunctions | IExecuteFunctions | ILoadOptionsFunctions,
	method: IHttpRequestMethods,
	resource: string,

	body: any = {},
	qs: IDataObject = {},
	uri?: string,
	headers: IDataObject = {},
	option: IDataObject = {},
): Promise<any> {
	let options: IRequestOptions = {
		headers: {
			'Content-Type': 'application/json',
		},
		method,
		body,
		qs,
		uri: uri || `https://api.infusionsoft.com/crm/rest/v1${resource}`,
		json: true,
	};
	try {
		options = Object.assign({}, options, option);
		if (Object.keys(headers).length !== 0) {
			options.headers = Object.assign({}, options.headers, headers);
		}
		if (Object.keys(body as IDataObject).length === 0) {
			delete options.body;
		}
		//@ts-ignore
		return await this.helpers.requestOAuth2.call(this, 'keapOAuth2Api', options);
	} catch (error) {
		throw new NodeApiError(this.getNode(), error as JsonObject);
	}
}

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

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

	let responseData;
	let uri: string | undefined;
	query.limit = 50;

	do {
		responseData = await keapApiRequest.call(this, method, endpoint, body, query, uri);
		uri = responseData.next;
		returnData.push.apply(returnData, responseData[propertyName] as IDataObject[]);
	} while (returnData.length < responseData.count);

	return returnData;
}

export function keysToSnakeCase(elements: IDataObject[] | IDataObject): IDataObject[] {
	if (!Array.isArray(elements)) {
		elements = [elements];
	}
	for (const element of elements) {
		for (const key of Object.keys(element)) {
			if (key !== snakeCase(key)) {
				element[snakeCase(key)] = element[key];
				delete element[key];
			}
		}
	}
	return elements;
}