[Refactor] #13 - MVVM 패턴 WeatherListVIewModel 추가

SOPT33_assignment2/SOPT33_assignment2/Presentation/WeatherList/ViewModel/WeatherListViewModel.swift

@@ -0,0 +1,75 @@
+//
+//  WeatherListViewModel.swift
+//  SOPT33_assignment2
+//
+//  Created by Gahyun Kim on 2023/12/18.
+//
+//
+import UIKit
+
+final class WeatherListViewModel: NSObject {
+
+    // MARK: - Set Properties
+
+    var searchWeatherListData = weatherList //검색 결과 데이터
+    private var weatherListView : WeatherListView?
+
+
+    // MARK: - Set Network
+
+    //API에서 가져오는 timezone 현재 시간으로 변경하기
+    func convertTime(timezone: Int) -> String {
+        let timeZone = TimeZone(secondsFromGMT: timezone)
+        let dateFormatter = DateFormatter()
+        dateFormatter.dateFormat = "HH:mm"
+        dateFormatter.timeZone = timeZone
+        let currentDate = Date()
+        let formattedTime = dateFormatter.string(from: currentDate)
+        return formattedTime
+    }
+
+    func fetchWeatherInfo() async -> Bool {
+        let cityname = ["seoul",
+                        "daegu",
+                        "ulsan",
+                        "chuncheon",
+                        "jeju",
+                        "gwangju",
+                        "suwon",
+                        "iksan",
+                        "busan"]
+
+        for city in cityname {
+            do {
+                let currentWeather = try await WeatherService.shared.getWeatherData(cityname: city)
+                print("type:", type(of: currentWeather.timezone))
+                let weatherInfo = WeatherListData(location: currentWeather.name,
+                                                  time: convertTime(timezone: currentWeather.timezone),
+                                                  weather: currentWeather.weather[0].main,
+                                                  temperature: Int(currentWeather.main.temp),
+                                                  max: Int(currentWeather.main.tempMax),
+                                                  min: Int(currentWeather.main.tempMin))
+                weatherList.append(weatherInfo)
+                searchWeatherListData = weatherList
+            } catch {
+                print(error)
+            }
+        }
+        return true
+    }
+}
+
+
+extension WeatherListViewModel: UITableViewDataSource {
+    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
+        return searchWeatherListData.count
+    }
+
+    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
+        guard let cell = tableView.dequeueReusableCell(withIdentifier: WeatherListTableViewCell.className,
+                                                       for: indexPath) as? WeatherListTableViewCell else {return UITableViewCell()}
+
+        cell.bindData(data: searchWeatherListData[indexPath.row])
+        return cell
+    }
+}