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/**

* @function HaversineDistance

* @description Calculate the distance between two coordinates using the haversine formula

* @param {Integer} latitude1 - The input integer

* @param {Integer} latitude2 - The input integer

* @param {Integer} longitude1 - The input integer

* @param {Integer} longitude2 - The input integer

* @return {Integer} Haversine Distance.

* @see [Haversine_Distance](https://pt.wikipedia.org/wiki/F%C3%B3rmula_de_Haversine)

*/

const haversineDistance = (latitude1 = 0, longitude1 = 0, latitude2 = 0, longitude2 = 0) => {

validateLatOrLong(latitude1)

validateLatOrLong(latitude2)

validateLatOrLong(longitude1)

validateLatOrLong(longitude2)

const earthRadius = 6371e3 // 6,371km

const pi = Math.PI

const cos1 = latitude1 * pi / 180.0

const cos2 = latitude2 * pi / 180.0

const deltaLatitude = (latitude2 - latitude1) * pi / 180.0

const deltaLongitude = (longitude2 - longitude1) * pi / 180.0

const alpha = Math.sin(deltaLatitude / 2) * Math.sin(deltaLatitude / 2) + Math.cos(cos1) * Math.cos(cos2) * Math.sin(deltaLongitude / 2) * Math.sin(deltaLongitude / 2)

const constant = 2 * Math.atan2(Math.sqrt(alpha), Math.sqrt(1 - alpha))

return earthRadius * constant

}

const validateLatOrLong = value => {

if (typeof value !== 'number') {

throw new TypeError('The value of latitude or longitude should be a number')

}

}

export { haversineDistance }