//
//  MastodonController.swift
//  Tusker
//
//  Created by Shadowfacts on 8/15/18.
//  Copyright © 2018 Shadowfacts. All rights reserved.
//

import Foundation
import MastodonKit

class MastodonController {
    
    static let shared = MastodonController()
    
    var client: Client!
    
    var account: Account!
    
    private init() {
    }
    
    func createClient() {
        guard let url = LocalData.shared.instanceURL else { fatalError("Can't connect without instance URL") }
        
        client = Client(baseURL: url)
        
        if let accessToken = LocalData.shared.accessToken {
            client.accessToken = accessToken
        }
    }
    
    func registerApp(completion: @escaping () -> Void) {
        guard LocalData.shared.clientID == nil,
            LocalData.shared.clientSecret == nil else {
                completion()
                return
        }
        
        let registerRequest = Clients.register(clientName: "Tusker", redirectURI: "tusker://oauth", scopes: [.read, .write, .follow])
        
        client.run(registerRequest) { result in
            guard case let .success(application, _) = result else { fatalError() }
            LocalData.shared.clientID = application.clientID
            LocalData.shared.clientSecret = application.clientSecret
            completion()
        }
    }
    
    func authorize(authorizationCode: String, completion: @escaping () -> Void) {
        let authorizeRequest = Login.authorize(code: authorizationCode, clientID: LocalData.shared.clientID!, clientSecret: LocalData.shared.clientSecret!, redirectURI: "tusker://oauth")
        client.run(authorizeRequest) { result in
            guard case let .success(settings, _) = result else { fatalError() }
            LocalData.shared.accessToken = settings.accessToken
            self.client.accessToken = settings.accessToken
            completion()
        }
    }
    
    func getOwnAccount() {
        let req = Accounts.currentUser()
        client.run(req) { result in
            guard case let .success(account, _) = result else { fatalError() }
            self.account = account
        }
    }
    
}