//
//  NetworkServiceAccounts.swift
//  Wallet
//
//  Created by Igor on 05.11.2020.
//  Copyright © 2020 List. All rights reserved.
//

import Foundation
import Alamofire
import EosioSwift
import WalletNetwork

extension Network.Service.Accounts {
    typealias Model = Network.Model.Account
}

extension Network.Service {
    final class Accounts: Common.Service.Provider {
        private var service: EOSService?
    }
}

extension Network.Service.Accounts {
    func exists(account: String, completion: @escaping (Bool) -> Void) {
        self.account(account) { completion($0 != nil) }
    }
    
    func account(_ account: String, completion: @escaping (Model?) -> Void) {
        
        if !self.service.isExist {
            guard let environment = try? ApplicationEnvironment.shared().current.networkEnvironment() else {
                completion(nil)
                return
            }
            
            self.service = EOSService(environment: environment)
        }

        self.service?.getAccount(account) {
            switch $0 {
            case let .success(response): completion(.init(response: response))
            case .failure(_): completion(nil)
            }
        }
    }
    
    func getChatPublicKey(_ account: String, completion: @escaping (Result<String, String>) -> Void) {
        
        if !self.service.isExist {
            guard let environment = try? ApplicationEnvironment.shared().current.networkEnvironment() else {
                completion(.failure("Cannot find me.chat or active keys for account \(account)"))
                return
            }
            
            self.service = EOSService(environment: environment)
        }

        self.service?.getAccount(account) {
            switch $0 {
            case let .success(account):
                let receiverPublicKey = account.permissions.filter({ $0.permName.lowercased() == "me.chat" }).first?.requiredAuth.keys.first?.key
                ?? account.permissions.filter({ $0.permName.lowercased() == "active" }).first?.requiredAuth.keys.first?.key
                ?? ""

                if receiverPublicKey.isEmpty {
                    completion(.failure("Cannot find me.chat or active keys for account \(account)"))
                } else {
                    completion(.success(receiverPublicKey))
                }
            case let .failure(error):
                completion(.failure(error.description))
            }
        }
    }
}