'use strict'
const _isFinite = require('lodash/isFinite')
const _isObject = require('lodash/isObject')
const _includes = require('lodash/includes')
const ORDER_TYPES = ['MARKET', 'LIMIT']
/**
* Verifies that a parameters Object is valid, and all parameters are within
* the configured boundaries for a valid MACrossover order.
*
* Part of the `meta` handler section.
*
* @memberOf module:MACrossover
* @param {object} args - incoming parameters
* @param {string} args.orderType - LIMIT or MARKET
* @param {number} args.orderPrice - price for order if `orderType` is LIMIT
* @param {number} args.amount - total order amount
* @param {string} args.shortType - MA or EMA
* @param {string} [args.shortEMATF] - candle time frame for short EMA signal
* @param {number} [args.shortEMAPeriod] - cadnel period for short EMA signal
* @param {string} [args.shortEMAPrice] - candle price key for short EMA signal
* @param {string} [args.shortMATF] - candle time frame for short MA signal
* @param {number} [args.shortMAPeriod] - cadnel period for short MA signal
* @param {string} [args.shortMAPrice] - candle price key for short MA signal
* @param {string} args.longType - MA or EMA
* @param {string} [args.longEMATF] - candle time frame for long EMA signal
* @param {number} [args.longEMAPeriod] - cadnel period for long EMA signal
* @param {string} [args.longEMAPrice] - candle price key for long EMA signal
* @param {string} [args.longMATF] - candle time frame for long MA signal
* @param {number} [args.longMAPeriod] - cadnel period for long MA signal
* @param {string} [args.longMAPrice] - candle price key for long MA signal
* @returns {string} error - null if parameters are valid, otherwise a
* description of which parameter is invalid.
*/
const validateParams = (args = {}) => {
const {
orderPrice, amount, orderType, submitDelay, cancelDelay, long, short, lev,
_futures
} = args
if (!_includes(ORDER_TYPES, orderType)) return `Invalid order type: ${orderType}`
if (!_isFinite(amount)) return 'Invalid amount'
if (!_isFinite(submitDelay) || submitDelay < 0) return 'Invalid submit delay'
if (!_isFinite(cancelDelay) || cancelDelay < 0) return 'Invalid cancel delay'
if (orderType === 'LIMIT' && !_isFinite(orderPrice)) {
return 'Limit price required for LIMIT order type'
}
if (!_isObject(long)) return 'Invalid long indicator config'
if (long.args.length !== 1) return 'Invalid args for long ma indicator '
if (long.args[0] <= 0) return 'Invalid long period, please set a positive value'
if (!long.candlePrice) return 'Candle price required for long indicator'
if (!long.candleTimeFrame) return 'Candle time frame required for long indicator'
if (!_isFinite(long.args[0])) return `Invalid long indicator period: ${long.args[0]}`
if (!_isObject(short)) return 'Invalid short indicator config'
if (short.args.length !== 1) return 'Invalid args for short ma indicator '
if (short.args[0] <= 0) return 'Invalid short period, please set a positive value'
if (!short.candlePrice) return 'Candle price required for short indicator'
if (!short.candleTimeFrame) return 'Candle time frame required for short indicator'
if (!_isFinite(short.args[0])) return `Invalid short indicator period: ${short.args[0]}`
if (_futures) {
if (!_isFinite(lev)) return 'Invalid leverage'
if (lev < 1) return 'Leverage less than 1'
if (lev > 100) return 'Leverage greater than 100'
}
return null
}
module.exports = validateParams