//
//  CalendarViewModel.swift
//  LMS
//
//  Created by Suraj Kumar Mandal on 26/12/22.
//

import Foundation
import Alamofire

class CalendarViewModel {
    
    var delegate: CalendarProtocol?
    
    func getCalendarData(id:Int, month: String) {
        if let delegate = delegate {
            delegate.startLoader()
            let url = ApiURL.GetCalendarData + "/\(id)/calendar"
            print(url)
            let accessToken = UserDefaults.standard.value(forKey: "accessToken") as! String
            
            let parameters: [String: Any] = [
                "userId" : id,
                "inMonth" : month
            ]
            print(parameters)
            
            let headers: HTTPHeaders = [
                "Authorization": "Bearer \(accessToken)",
                "Accept": "application/json",
                "Content-Type": "application/json"
            ]
            print(headers)
            
            AF.request(url, 
                       method: .post,
                       parameters: parameters,
                       encoding: JSONEncoding.default,
                       headers: headers)
            .responseJSON { response in
                if response.response?.statusCode == 200 {
                    switch response.result {
                    case .success(_):
                        delegate.stopLoader()
                        guard let jsonData = response.data else {
                            return
                        }
                        let decoder = JSONDecoder()
                        do {
                            let users = try decoder.decode([CalendarModel].self, from: jsonData)
                            delegate.loadData(model: users)
                            print(users.count)
                        } catch {
                            print("getDataList Unexpected error: \(error).")
                            delegate.showError(error: "getDataList Unexpected error: \(error).")
                        }
                        
                        break
                    case .failure(let error):
                        delegate.stopLoader()
                        print(error.localizedDescription)
                        delegate.showError(error: error.localizedDescription)
                        break
                    }
                }
            }
        }
    }
    
}

protocol CalendarProtocol {
    func startLoader()
    func stopLoader()
    func showError(error:String)
    func loadData(model: [CalendarModel])
}