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- Get 통신으로 Picsum API 를 통해 Json으로 데이터 가져오기 까지 구현함
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| // | ||
| // ImageURLModel.swift | ||
| // iOS_assignment3 | ||
| // | ||
| // Created by 김담인 on 2022/05/13. | ||
| // | ||
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| import Foundation | ||
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| var ImageURL:[String] = [""] |
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126 changes: 126 additions & 0 deletions
126
iOS_assignment3/iOS_assignment3/Service/ImageService.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,126 @@ | ||
| // | ||
| // ImageService.swift | ||
| // iOS_assignment3 | ||
| // | ||
| // Created by 김담인 on 2022/05/14. | ||
| // | ||
|
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| import Foundation | ||
| import Alamofire | ||
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| class ImageService { | ||
| // 싱글톤 변수(Singleton) | ||
| // | ||
| static let shared = ImageService() | ||
|
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| private init() {} | ||
|
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| } | ||
| /* | ||
| extension ImageService { | ||
| func getImage(id:String) { | ||
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| guard let url = URL(string: "\(APIConstants.picsumURL)/id/\(id)/info") else {return} | ||
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| var request = URLRequest.init(url: url) | ||
| request.httpMethod = "GET" | ||
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| URLSession.shared.dataTask(with: request) { | ||
| data,response,error in | ||
|
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| guard let data = data else {return} | ||
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| do { | ||
| //받은 json데이터 파싱 | ||
| let decoder = JSONDecoder() | ||
| decoder.keyDecodingStrategy = .convertFromSnakeCase | ||
| let result = try decoder.decode([ImageResponse].self, from: data) | ||
| print("결과:\(result)") | ||
|
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| } catch(let error) { | ||
| print("에러:\(error)") | ||
| } | ||
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| }.resume() //모든 task()는 일시정지 상태로 시작하기 때문에 resume()으로 task()를 시작 | ||
| } | ||
| } | ||
| */ | ||
| extension ImageService { | ||
|
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| func getImage( completion: @escaping (NetworkResult<Any>) -> Void) | ||
| { | ||
| // completion 클로저를 @escaping closure로 정의 | ||
| let url = APIConstants.picsumURL // URL | ||
| let header: HTTPHeaders = ["Content-Type" : "application/json"] // HTTP Headers | ||
| let QueryParams: Parameters = [ | ||
| "page": 1, | ||
| "limit": 4 | ||
| ] | ||
|
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| // 요청서 | ||
| // Request 생성 | ||
| let dataRequest = AF.request(url, | ||
| method: .get, | ||
| parameters: QueryParams, | ||
| encoding: URLEncoding.default, | ||
| headers: header) | ||
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| // 서버 통신 시작 - Request 시작 | ||
| dataRequest.responseData { response in | ||
| // 요청(Request)를 하고 넘겨받은 응답의 결과를 가지고 성공 또는 실패 분기 처리 | ||
| switch response.result { | ||
| case .success: | ||
| // 성공 시에는 상태코드(Status Code)와 값(Value) | ||
| guard let statusCode = response.response?.statusCode else { return } | ||
| guard let value = response.value else { return } | ||
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| // 해당 응답을 가지고 case 분기처리 (200, 400, 500인지 - 200: 성공을 해서 데이터를 잘 받았는지 확인 | ||
| let networkResult = self.judgeStatus(by: statusCode, value, [ImageData].self) | ||
| completion(networkResult) | ||
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| // 실패 시에는 바로 networkFail(통신 실패)라는 신호 | ||
| case .failure: | ||
| completion(.networkFail) | ||
| } | ||
| } | ||
| } | ||
| /* | ||
| private func judgeStatus(by statusCode: Int, _ data: Data) -> NetworkResult<Any> { | ||
| switch statusCode { | ||
| // 성공 시에는 넘겨받은 데이터를 decode(해독)하는 함수를 호출 | ||
| // statusCode가 200~400대 일때는 통신에 이상있는것이 아니라 둘다 isValidLoginData함수를 호출 | ||
| case 200..<300: return isVaildSignUpData(data: data) | ||
| case 400..<500: return isVaildSignUpData(data: data) | ||
| case 500..<600: return .serverErr | ||
| default: return .networkFail | ||
| } | ||
| } | ||
|
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| private func isVaildSignUpData(data: Data) -> NetworkResult<Any> { | ||
| let decoder = JSONDecoder() | ||
| guard let decodedData = try? decoder.decode(SignUpResponse.self, from: data) | ||
| else { return .pathErr } | ||
|
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| return .success(decodedData as Any) | ||
| } | ||
| */ | ||
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| // 상태 코드와 값(value, data, response)를 가지고 통신의 결과를 핸들링하는 함수입니다. | ||
| private func judgeStatus<T: Codable>(by statusCode: Int, _ data: Data, _ response: T.Type) -> NetworkResult<Any> { | ||
|
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| let decoder = JSONDecoder() | ||
| guard let decodedData = try? decoder.decode(response.self, from: data) | ||
| else { | ||
| return .pathErr | ||
| } | ||
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| switch statusCode { | ||
| // 성공 시에는 넘겨받은 데이터를 decode(해독)하는 함수를 호출합니다. | ||
| case 200: return .success(decodedData) | ||
| case 201: return .success(decodedData) | ||
| case 400..<500: return .requestErr(decodedData) //400대에서는 .requestErr로 빠짐 | ||
| case 500: return .serverErr | ||
| default: return .networkFail | ||
| } | ||
| } | ||
| } |
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