'use strict';

// const randHex = require('../../lib/utils').randHex;
const crypto = require('crypto');
const js2xmlparser = require('js2xmlparser');
const consts = require('../consts');

const authSignature = () => {
	return {
		'ds:SignedInfo': {
			'ds:CanonicalizationMethod': {
				'@': {
					Algorithm:
						'http://www.w3.org/TR/2001/REC-xml-c14n-20010315',
				},
			},
			'ds:SignatureMethod': {
				'@': {
					Algorithm:
						'http://www.w3.org/2001/04/xmldsig-more#rsa-sha256',
				},
			},
			'ds:Reference': {
				'@': { URI: "#xpointer(//*[@authenticate='true'])" },
				'ds:Transforms': {
					'ds:Transform': {
						'@': {
							Algorithm:
								'http://www.w3.org/TR/2001/REC-xml-c14n-20010315',
						},
					},
				},
				'ds:DigestMethod': {
					'@': {
						Algorithm:
							'http://www.w3.org/2001/04/xmlenc#sha256',
					},
				},
				'ds:DigestValue': {},
			},
		},
		'ds:SignatureValue': {},
	};
};
module.exports = class GenericOrder {
	constructor(client) {
		this.client = client;

		this.hostId = client.hostId;
		this.userId = client.userId;
		this.partnerId = client.partnerId;

		this.transactionId = '';

		this.xmlOptions = {
			declaration: {
				include: true,
				encoding: 'utf-8',
			},
			format: {
				doubleQuotes: true,
				indent: '',
				newline: '',
				pretty: true,
			},
		};

		this._schema = {
			'@': {
				'xmlns:ds': 'http://www.w3.org/2000/09/xmldsig#',
				xmlns: 'urn:org:ebics:H004',
				Version: 'H004',
				Revision: '1',
			},

			header: {},

			AuthSignature: authSignature(),

			body: {},
		};
	}

	get schema() {
		return this._schema;
	}

	static get productString() {
		return consts.productString;
	}

	static nonce() {
		return crypto.randomBytes(16).toString('hex');
	}

	// TODO: remove eslint-disable-line
	timestamp() { // eslint-disable-line
		return new Date().toISOString();
	}

	root() { // eslint-disable-line class-methods-use-this
		return 'ebicsRequest';
	}

	toReceiptXML() {
		const xmlObj = {
			'@': {
				'xmlns:ds': 'http://www.w3.org/2000/09/xmldsig#',
				xmlns: 'urn:org:ebics:H004',
				Version: 'H004',
				Revision: '1',
			},

			header: {
				'@': { authenticate: true },
				static: {
					HostID: this.hostId,
					TransactionID: this.transactionId,
				},
				mutable: {
					TransactionPhase: 'Receipt',
				},
			},

			AuthSignature: this.authSignature(),

			body: {
				TransferReceipt: {
					'@': { authenticate: true },
					ReceiptCode: 0,
				},
			},
		};

		return js2xmlparser.parse(this.root(), xmlObj, this.xmlOptions);
	}

	toTransferXML() {
		const xmlObj = {
			'@': {
				'xmlns:ds': 'http://www.w3.org/2000/09/xmldsig#',
				xmlns: 'urn:org:ebics:H004',
				Version: 'H004',
				Revision: '1',
			},

			header: {
				'@': { authenticate: true },
				static: {
					HostID: this.hostId,
					TransactionID: this.transactionId,
				},
				mutable: {
					TransactionPhase: 'Transfer',
					SegmentNumber: {
						'@': { lastSegment: true },
						'#': 1,
					},
				},
			},

			AuthSignature: this.authSignature(),

			body: {
				DataTransfer: {
					OrderData: this.encryptedOrderData(),
				},
			},
		};

		return js2xmlparser.parse(this.root(), xmlObj, this.xmlOptions);
	}

	encryptedOrderData() { // eslint-disable-line class-methods-use-this
		return null;
	}

	toXML() {
		return js2xmlparser.parse(this.root(), this._schema, this.xmlOptions);
	}
};