177 lines
5.9 KiB
Swift
177 lines
5.9 KiB
Swift
//
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// https://mczachurski.dev
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// Copyright © 2022 Marcin Czachurski and the repository contributors.
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// Licensed under the Apache License 2.0.
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//
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import Foundation
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import OAuthSwift
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public enum PixelfedClientError: Swift.Error {
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case oAuthCancelled
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}
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public protocol PixelfedClientProtocol {
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static func request(for baseURL: URL, target: TargetType, withBearerToken token: String?, timeoutInterval: Double?) throws -> URLRequest
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}
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public extension PixelfedClientProtocol {
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static func request(for baseURL: URL, target: TargetType, withBearerToken token: String? = nil, timeoutInterval: Double? = nil) throws -> URLRequest {
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var urlComponents = URLComponents(url: baseURL.appendingPathComponent(target.path), resolvingAgainstBaseURL: false)
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urlComponents?.queryItems = target.queryItems?.map { URLQueryItem(name: $0.0, value: $0.1) }
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guard let url = urlComponents?.url else { throw NetworkingError.cannotCreateUrlRequest }
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var request = URLRequest(url: url)
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if let timeoutInterval {
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request.timeoutInterval = timeoutInterval
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}
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target.headers?.forEach { header in
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request.setValue(header.1, forHTTPHeaderField: header.0)
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}
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if let token = token {
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request.setValue("Bearer \(token)", forHTTPHeaderField: "Authorization")
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}
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request.httpMethod = target.method.rawValue
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request.httpBody = target.httpBody
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return request
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}
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}
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public class PixelfedClient: PixelfedClientProtocol {
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let urlSession: URLSession
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let baseURL: URL
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/// oAuth
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var oauthClient: OAuth2Swift?
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var oAuthHandle: OAuthSwiftRequestHandle?
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var oAuthContinuation: CheckedContinuation<OAuthSwiftCredential, Swift.Error>?
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public init(baseURL: URL, urlSession: URLSession = .shared) {
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self.baseURL = baseURL
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self.urlSession = urlSession
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}
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public func getAuthenticated(token: Token) -> PixelfedClientAuthenticated {
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PixelfedClientAuthenticated(baseURL: baseURL, urlSession: urlSession, token: token)
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}
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deinit {
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oAuthContinuation?.resume(throwing: PixelfedClientError.oAuthCancelled)
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oAuthHandle?.cancel()
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}
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public func downloadJson<T>(_ type: T.Type, request: URLRequest) async throws -> T where T: Decodable {
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let (data, response) = try await urlSession.data(for: request)
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guard (response as? HTTPURLResponse)?.status?.responseType == .success else {
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throw NetworkError.notSuccessResponse(response)
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}
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#if DEBUG
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do {
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return try JSONDecoder().decode(type, from: data)
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} catch {
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let json = String(data: data, encoding: .utf8)!
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print(json)
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throw error
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}
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#else
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return try JSONDecoder().decode(type, from: data)
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#endif
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}
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}
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public class PixelfedClientAuthenticated: PixelfedClientProtocol {
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public let token: Token
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public let baseURL: URL
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public let urlSession: URLSession
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init(baseURL: URL, urlSession: URLSession, token: Token) {
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self.token = token
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self.baseURL = baseURL
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self.urlSession = urlSession
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}
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public func send(request: URLRequest) async throws {
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let (data, response) = try await urlSession.data(for: request)
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guard (response as? HTTPURLResponse)?.status?.responseType == .success else {
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#if DEBUG
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let json = String(data: data, encoding: .utf8)!
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print(json)
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#endif
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throw NetworkError.notSuccessResponse(response)
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}
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}
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public func downloadJson<T>(_ type: T.Type, request: URLRequest) async throws -> T where T: Decodable {
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let (data, response) = try await urlSession.data(for: request)
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guard (response as? HTTPURLResponse)?.status?.responseType == .success else {
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#if DEBUG
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let json = String(data: data, encoding: .utf8)!
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print(json)
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#endif
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throw NetworkError.notSuccessResponse(response)
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}
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#if DEBUG
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do {
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return try JSONDecoder().decode(type, from: data)
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} catch {
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let json = String(data: data, encoding: .utf8)!
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print(json)
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throw error
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}
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#else
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return try JSONDecoder().decode(type, from: data)
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#endif
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}
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public func downloadJsonWithLink<T>(_ type: T.Type, request: URLRequest) async throws -> Linkable<T> where T: Decodable {
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let (data, response) = try await urlSession.data(for: request)
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guard (response as? HTTPURLResponse)?.status?.responseType == .success else {
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throw NetworkError.notSuccessResponse(response)
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}
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#if DEBUG
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do {
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let decoded = try JSONDecoder().decode(type, from: data)
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var link: Link?
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if let response = response as? HTTPURLResponse, let linkHeader = response.allHeaderFields["Link"] as? String {
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link = Link(rawLink: linkHeader)
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}
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return Linkable(data: decoded, link: link)
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} catch {
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let json = String(data: data, encoding: .utf8)!
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print(json)
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throw error
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}
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#else
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let decoded = try JSONDecoder().decode(type, from: data)
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var link: Link?
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if let response = response as? HTTPURLResponse, let linkHeader = response.allHeaderFields["Link"] as? String {
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link = Link(rawLink: linkHeader)
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}
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return Linkable(data: decoded, link: link)
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#endif
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}
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}
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