alpha-wallet-ios/Trust/Market/OrdersRequest.swift

//
// Created by James Sangalli on 15/2/18.
//

import Foundation
import Alamofire
import SwiftyJSON

//"orders": [
//    {
//    "message": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAACOG8m/BAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAWojJJwB77oK92ehmsr0RR4CkfyJhxoTjAAIAAwAE)",
//    "expiry": "1518913831",
//    "start": "32800312",
//    "count": "3",
//    "price": "10000000000000000",
//    "signature": "jrzcgpsnV7IPGE3nZQeHQk5vyZdy5c8rHk0R/iG7wpiK9NT730I//DN5Dg5fHs+s4ZFgOGQnk7cXLQROBs9NvgE="
//    }
//]

public class OrdersRequest {

    public let baseURL = "https://482kdh4npg.execute-api.ap-southeast-1.amazonaws.com/dev/"
    public let contractAddress = "0x007bee82bdd9e866b2bd114780a47f2261c684e3" //this is wrong as it is the deployer address, will be corrected later

    public func getOrders(callback: @escaping (_ result: Any) -> Void) {
        Alamofire.request(baseURL + "/contract/" + contractAddress, method: .get).responseJSON { response in
            callback(response)
        }
    }

    //only have to give first order to server then pad the signatures
    public func putOrderToServer(signedOrders: [SignedOrder],
                                 publicKey: String,
                                 callback: @escaping (_ result: Any) -> Void) {
        //TODO get encoding for count and start
        let query: String = baseURL + "public-key/" + publicKey + "?start=" +
                signedOrders[0].order.start.description + ";count=" + signedOrders[0].order.count.description
        var data: [UInt8] = signedOrders[0].message

        for i in 0...signedOrders.count - 1 {
            for j in 0...64 {
                data.append(signedOrders[i].signature.hexa2Bytes[j])
            }
        }

        let hexData: String = OrdersRequest.bytesToHexa(data)
        let parameters: Parameters = ["data": hexData]
        let headers: HTTPHeaders = ["Content-Type": "application/vnd.awallet-signed-orders-v0"]

        Alamofire.request(query, method: .put,
                          parameters: parameters,
                          encoding: JSONEncoding.default,
                          headers: headers).responseJSON { response in
            print("Request: \(String(describing: response.request))")   // original url request
            print("Response: \(String(describing: response.response))") // http url response
            print("Result: \(response.result)") // response serialization result

            if let json = response.result.value {
                //print("JSON: \(json)") // serialized json response
                let parsedJSON = JSON(parseJSON: json as! String)
                callback(parsedJSON["orders"]["accepted"])
            }

            if let data = response.data, let utf8Text = String(data: data, encoding: .utf8) {
                print("Data: \(utf8Text)") // original server data as UTF8 string
            }
        }

    }

    public static func bytesToHexa(_ bytes: [UInt8]) -> String {
        return bytes.map {
            String(format: "%02X", $0)
        }.joined()
    }

}