98 lines
2.4 KiB
Swift
98 lines
2.4 KiB
Swift
//
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// Resource.swift
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// Buildkite
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//
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// Created by Aaron Sky on 3/22/20.
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// Copyright © 2020 Aaron Sky. All rights reserved.
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//
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import Foundation
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#if canImport(FoundationNetworking)
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import FoundationNetworking
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#endif
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public enum ResourceError: Error {
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case incompatibleVersion(APIVersion)
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}
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public protocol Resource {
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associatedtype Body = Void
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associatedtype Content = Void
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var version: APIVersion { get }
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var path: String { get }
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var body: Body { get }
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func transformRequest(_ request: inout URLRequest)
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}
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extension Resource {
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public var version: APIVersion {
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APIVersion.REST.v2
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}
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public func transformRequest(_ request: inout URLRequest) {}
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}
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extension Resource where Body == Void {
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public var body: Body {
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()
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}
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}
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public protocol PaginatedResource: Resource where Content: Decodable {}
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extension URLRequest {
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init<R: Resource>(
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_ resource: R,
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configuration: Configuration
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) throws {
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let version = resource.version
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guard
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version == configuration.version
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|| version == configuration.graphQLVersion
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else {
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throw ResourceError.incompatibleVersion(version)
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}
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let url = version.url(for: resource.path)
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var request = URLRequest(url: url)
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configuration.transformRequest(&request)
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resource.transformRequest(&request)
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self = request
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}
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init<R: Resource>(
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_ resource: R,
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configuration: Configuration,
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encoder: JSONEncoder
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) throws where R.Body: Encodable {
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try self.init(resource, configuration: configuration)
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httpBody = try encoder.encode(resource.body)
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}
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init<R: Resource & PaginatedResource>(
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_ resource: R,
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configuration: Configuration,
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pageOptions: PageOptions? = nil
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) throws {
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try self.init(resource, configuration: configuration)
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if let options = pageOptions {
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appendPageOptions(options)
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}
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}
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init<R: Resource & PaginatedResource>(
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_ resource: R,
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configuration: Configuration,
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encoder: JSONEncoder,
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pageOptions: PageOptions? = nil
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) throws where R.Body: Encodable {
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try self.init(resource, configuration: configuration, encoder: encoder)
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if let options = pageOptions {
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appendPageOptions(options)
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}
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}
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}
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