//
//  DashboardViewModel.swift
//  LMS
//
//  Created by Suraj Kumar Mandal on 02/09/22.
//

import Foundation
import Alamofire

class DashboardViewModel {
    
    var delegate: DashboardProtocol?
    
    func getSessionList(userId:Int, interventionId:Any, batchId:Any, schoolId:Any, interventionLevelId:Any, month:Any) {
        if let delegate = delegate {
            delegate.startLoader()
            let url = ApiURL.GetSessionList + "/\(userId)/filter"
            print(url)
            let accessToken = UserDefaults.standard.value(forKey: "accessToken") as! String
            
            let headers: HTTPHeaders = [
                "Authorization": "Bearer \(accessToken)",
                "Accept": "application/json",
                "Content-Type": "application/json"
            ]
            print(headers)
            
            let parameters: [String: Any] = [
                "interventionId" : interventionId,
                "batchId" : batchId,
                "schoolId" : schoolId,
                "interventionLevelId" : interventionLevelId,
                "statuses" : [],
                "inmonth" : month
            ]
            print(parameters)
            
            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 sessionListData = try decoder.decode([SessionListModel].self, from: jsonData)
                            delegate.sessionListModel(model: sessionListData)
                            print(sessionListData.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
                    }
                }
            }
        }
    }
    
    func getAssessmentList(userId:Int, month:String) {
        if let delegate = delegate {
            delegate.startLoader()
            let url = ApiURL.GetAssessmentList + "/\(userId)/false"
            print(url)
            let accessToken = UserDefaults.standard.value(forKey: "accessToken") as! String
            
            let headers: HTTPHeaders = [
                "Authorization": "Bearer \(accessToken)",
                "Accept": "application/json",
                "Content-Type": "application/json"
            ]
            print(headers)
            
            let parameters: [String: Any] = [
                "createdDate" : month,
                "statuses" : []
            ]
            print(parameters)
            
            AF.request(url, 
                       method: .post,
                       parameters: parameters,
                       encoding: JSONEncoding.default,
                       headers: headers)
            .responseString { 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 assessmentListData = try decoder.decode([AssessmentListModel].self, from: jsonData)
                            delegate.assessmentListModel(model: assessmentListData)
                            print(assessmentListData.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
                    }
                } else {
                    print("Server error")
                }
            }
        }
    }
    
}

protocol DashboardProtocol {
    func startLoader()
    func stopLoader()
    func showError(error:String)
    func sessionListModel(model: [SessionListModel])
    func assessmentListModel(model: [AssessmentListModel])
}