//
//  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 userDefaults = UserDefaults()
    
    var client: Client!
    
    var clientID: String!
    var clientSecret: String!
    
    private init() {
    }
    
    func connect() {
        // TODO: OAuth
        let url = ProcessInfo.processInfo.environment["mastodon_url"]!
        let username = ProcessInfo.processInfo.environment["mastodon_username"]!
        let password = ProcessInfo.processInfo.environment["mastodon_password"]!
        
        client = Client(baseURL: url)
        
        register() {
            let loginReq = Login.silent(clientID: self.clientID, clientSecret: self.clientSecret, scopes: [.read, .write, .follow], username: username, password: password)
            
            self.client.run(loginReq) { result in
                guard case let .success(loginSettings, _) = result else { fatalError() }
                print("access token: \(loginSettings.accessToken)")
            }
        }
    }
    
    private func register(completion: @escaping () -> Void) {
        if let clientId = userDefaults.string(forKey: "clientID"),
            let clientSecret = userDefaults.string(forKey: "clientSecret") {
            self.clientID = clientId
            self.clientSecret = clientSecret
            completion()
            return
        }
        
        let registerRequest = Clients.register(clientName: "Tusker", scopes: [.read, .write, .follow])
        
        client.run(registerRequest) { result in
            guard case let .success(application, _) = result else { fatalError() }
            self.clientID = application.clientID
            self.clientSecret = application.clientSecret
            self.userDefaults.set(self.clientID, forKey: "clientID")
            self.userDefaults.set(self.clientSecret, forKey: "clientSecret")
            completion()
        }
    }
    
}