import {
	IExecuteFunctions,
} from 'n8n-core';
import {
	IDataObject,
	INodeTypeDescription,
	INodeExecutionData,
	INodeType,
	ILoadOptionsFunctions,
	INodePropertyOptions,
} from 'n8n-workflow';
import {
	leadOpeations,
	leadFields,
} from './LeadDescription';
import {
	intercomApiRequest,
	validateJSON,
} from './GenericFunctions';
import {
	ILead,
	ILeadCompany
 } from './LeadInterface';

export class Intercom implements INodeType {

	description: INodeTypeDescription = {
		displayName: 'Intercom',
		name: 'intercom',
		icon: 'file:intercom.png',
		group: ['output'],
		version: 1,
		subtitle: '={{$parameter["operation"] + ": " + $parameter["resource"]}}',
		description: 'Consume intercom API',
		defaults: {
			name: 'Intercom',
			color: '#c02428',
		},
		inputs: ['main'],
		outputs: ['main'],
		credentials: [
			{
				name: 'intercomApi',
				required: true,
			}
		],
		properties: [
			{
				displayName: 'Resource',
				name: 'resource',
				type: 'options',
				options: [
					{
						name: 'Lead',
						value: 'lead',
						description: '',
					},
				],
				default: '',
				description: 'Resource to consume.',
			},
			...leadOpeations,
			...leadFields,
		],
	};

	methods = {
		loadOptions: {
			// Get all the available companies to display them to user so that he can
			// select them easily
			async getCompanies(this: ILoadOptionsFunctions): Promise<INodePropertyOptions[]> {
				const returnData: INodePropertyOptions[] = [];
				let companies, response;
				try {
					response = await intercomApiRequest.call(this, '/companies', 'GET');
				} catch (err) {
					throw new Error(`Intercom Error: ${err}`);
				}
				companies = response.companies;
				for (const company of companies) {
					const companyName = company.name;
					const companyId = company.company_id;
					returnData.push({
						name: companyName,
						value: companyId,
					});
				}
				return returnData;
			}
		},
	};

	async execute(this: IExecuteFunctions): Promise<INodeExecutionData[][]> {
		const items = this.getInputData();
		const returnData: IDataObject[] = [];
		const length = items.length as unknown as number;
		let responseData;
		for (let i = 0; i < length; i++) {
			const resource = this.getNodeParameter('resource', 0) as string;
			const operation = this.getNodeParameter('operation', 0) as string;
			if (resource === 'lead') {
				if (operation === 'create' || operation === 'update') {
					const email = this.getNodeParameter('email', i) as string;
					const options = this.getNodeParameter('options', i) as IDataObject;
					const jsonActive = this.getNodeParameter('jsonParameters', i) as boolean;
					const body: ILead = {
						email,
					};
					if (options.phone) {
						body.phone = options.phone as string;
					}
					if (options.name) {
						body.name = options.name as string;
					}
					if (options.unsubscribedFromEmails) {
						body.unsubscribed_from_emails = options.unsubscribedFromEmails as boolean;
					}
					if (options.updateLastRequestAt) {
						body.update_last_request_at = options.updateLastRequestAt as boolean;
					}
					if (options.companies) {
						const companies: ILeadCompany[] = [];
						// @ts-ignore
						options.companies.forEach( o => {
							const company: ILeadCompany = {};
							company.company_id = o;
							companies.push(company);
						});
						body.companies = companies;
					}
					if (!jsonActive) {
						const customAttributesValues = (this.getNodeParameter('customAttributesUi', i) as IDataObject).customAttributesValues as IDataObject[];
						if (customAttributesValues) {
							const customAttributes = {};
							for (let i = 0; i < customAttributesValues.length; i++) {
								// @ts-ignore
								customAttributes[customAttributesValues[i].name] = customAttributesValues[i].value;
							}
							body.custom_attributes = customAttributes;
						}
					} else {
						const customAttributesJson = validateJSON(this.getNodeParameter('customAttributesJson', i) as string);
						if (customAttributesJson) {
							body.custom_attributes = customAttributesJson;
						}
					}
					if (operation === 'update') {
						const updateBy = this.getNodeParameter('updateBy', 0) as string;
						const value = this.getNodeParameter('value', i) as string;
						if (updateBy === 'userId') {
							body.user_id = value;
						}
						if (updateBy === 'id') {
							body.id = value;
						}
					}
					try {
						responseData = await intercomApiRequest.call(this, '/contacts', 'POST', body);
					} catch (err) {
						throw new Error(`Intercom Error: ${JSON.stringify(err)}`);
					}
				}
			}
			if (Array.isArray(responseData)) {
				returnData.push.apply(returnData, responseData as IDataObject[]);
			} else {
				returnData.push(responseData as IDataObject);
			}
		}
		return [this.helpers.returnJsonArray(returnData)];
	}
}