138 lines
4.7 KiB
Swift
138 lines
4.7 KiB
Swift
//
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// FervorClient.swift
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// Fervor
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//
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// Created by Shadowfacts on 11/25/21.
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//
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import Foundation
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public class FervorClient {
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let instanceURL: URL
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let session: URLSession
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public var accessToken: String?
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private let decoder: JSONDecoder = {
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let d = JSONDecoder()
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let withFractionalSeconds = ISO8601DateFormatter()
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withFractionalSeconds.formatOptions = [.withInternetDateTime, .withFractionalSeconds]
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let without = ISO8601DateFormatter()
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without.formatOptions = [.withInternetDateTime]
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// because fucking ISO8601DateFormatter isn't a DateFormatter
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d.dateDecodingStrategy = .custom({ decoder in
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let s = try decoder.singleValueContainer().decode(String.self)
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// try both because Elixir's DateTime.to_iso8601 omits the .0 if the date doesn't have fractional seconds
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if let d = withFractionalSeconds.date(from: s) {
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return d
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} else if let d = without.date(from: s) {
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return d
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} else {
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throw DateDecodingError()
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}
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})
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return d
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}()
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public init(instanceURL: URL, accessToken: String?, session: URLSession = .shared) {
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self.instanceURL = instanceURL
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self.accessToken = accessToken
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self.session = session
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}
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private func buildURL(path: String, queryItems: [URLQueryItem] = []) -> URL {
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var components = URLComponents(url: instanceURL, resolvingAgainstBaseURL: false)!
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components.path = path
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components.queryItems = queryItems
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return components.url!
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}
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private func performRequest<T: Decodable>(_ request: URLRequest) async throws -> T {
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var request = request
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if let accessToken = accessToken {
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request.addValue("Bearer \(accessToken)", forHTTPHeaderField: "Authorization")
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}
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let (data, response) = try await session.data(for: request, delegate: nil)
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if (response as! HTTPURLResponse).statusCode == 404 {
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throw Error.notFound
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}
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let decoded = try decoder.decode(T.self, from: data)
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return decoded
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}
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public func register(clientName: String, website: URL? = nil, redirectURI: URL) async throws -> ClientRegistration {
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var request = URLRequest(url: buildURL(path: "/api/v1/register"))
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request.httpMethod = "POST"
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request.setURLEncodedBody(params: [
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"client_name": clientName,
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"website": website?.absoluteString,
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"redirect_uri": redirectURI.absoluteString,
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])
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return try await performRequest(request)
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}
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public func token(authCode: String, redirectURI: URL, clientID: String, clientSecret: String) async throws -> Token {
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var request = URLRequest(url: buildURL(path: "/oauth/token"))
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request.httpMethod = "POST"
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request.setURLEncodedBody(params: [
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"grant_type": "authorization_code",
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"authorization_code": authCode,
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"redirect_uri": redirectURI.absoluteString,
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"client_id": clientID,
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"client_secret": clientSecret,
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])
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return try await performRequest(request)
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}
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public func groups() async throws -> [Group] {
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let request = URLRequest(url: buildURL(path: "/api/v1/groups"))
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return try await performRequest(request)
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}
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public func feeds() async throws -> [Feed] {
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let request = URLRequest(url: buildURL(path: "/api/v1/feeds"))
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return try await performRequest(request)
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}
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public func syncItems(lastSync: Date?) async throws -> ItemsSyncUpdate {
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let request = URLRequest(url: buildURL(path: "/api/v1/items/sync", queryItems: [
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URLQueryItem(name: "last_sync", value: lastSync?.formatted(.iso8601))
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]))
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return try await performRequest(request)
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}
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public func items(feed id: FervorID) async throws -> [Item] {
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let request = URLRequest(url: buildURL(path: "/api/v1/feeds/\(id)/items"))
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return try await performRequest(request)
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}
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public func item(id: FervorID) async throws -> Item? {
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let request = URLRequest(url: buildURL(path: "/api/v1/items/\(id)"))
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do {
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return try await performRequest(request)
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} catch {
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if let error = error as? Error, case .notFound = error {
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return nil
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} else {
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throw error
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}
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}
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}
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public struct Auth {
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public let accessToken: String
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public let refreshToken: String?
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}
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public enum Error: Swift.Error {
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case urlSession(Swift.Error)
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case decode(Swift.Error)
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case notFound
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}
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}
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private struct DateDecodingError: Error {
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}
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