wehub-resource-sync
67 lines
2.7 KiB
Swift
67 lines
2.7 KiB
Swift
import Foundation
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public enum WayfinderSettingsError: LocalizedError, Equatable, Sendable {
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case invalidEndpointOverride(String)
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public var errorDescription: String? {
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switch self {
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case let .invalidEndpointOverride(key):
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"Wayfinder gateway URL override \(key) is invalid. Use an HTTPS URL, or plain HTTP for " +
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"loopback addresses only, without embedded credentials."
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}
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}
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}
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public enum WayfinderSettingsReader {
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public static let baseURLEnvironmentKey = "WAYFINDER_GATEWAY_URL"
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public static let defaultBaseURL = URL(string: "http://127.0.0.1:8088")!
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public static func baseURL(
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environment: [String: String] = ProcessInfo.processInfo.environment) -> URL
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{
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guard let raw = self.cleaned(environment[self.baseURLEnvironmentKey]) else {
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return self.defaultBaseURL
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}
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// Loopback HTTP is allowed because the gateway is a local service; the default
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// base URL is plain HTTP on 127.0.0.1. Non-loopback hosts must use HTTPS.
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return ProviderEndpointOverrideValidator().validatedURLAllowingLoopbackHTTP(raw) ?? self.defaultBaseURL
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}
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public static func validateEndpointOverride(
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environment: [String: String] = ProcessInfo.processInfo.environment) throws
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{
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guard let raw = self.cleaned(environment[self.baseURLEnvironmentKey]) else { return }
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guard ProviderEndpointOverrideValidator().validatedURLAllowingLoopbackHTTP(raw) != nil else {
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throw WayfinderSettingsError.invalidEndpointOverride(self.baseURLEnvironmentKey)
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}
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}
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public static func dashboardURL(
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environment: [String: String] = ProcessInfo.processInfo.environment) -> URL
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{
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self.appending(path: "router", to: self.baseURL(environment: environment))
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}
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static func appending(path: String, to baseURL: URL) -> URL {
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var components = URLComponents(url: baseURL, resolvingAgainstBaseURL: false) ?? URLComponents()
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let basePath = components.path.hasSuffix("/") ? String(components.path.dropLast()) : components.path
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components.path = "\(basePath)/\(path)"
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components.query = nil
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components.fragment = nil
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return components.url ?? baseURL
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}
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static func cleaned(_ raw: String?) -> String? {
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guard var value = raw?.trimmingCharacters(in: .whitespacesAndNewlines), !value.isEmpty else {
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return nil
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}
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if (value.hasPrefix("\"") && value.hasSuffix("\"")) ||
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(value.hasPrefix("'") && value.hasSuffix("'"))
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{
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value = String(value.dropFirst().dropLast())
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}
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value = value.trimmingCharacters(in: .whitespacesAndNewlines)
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return value.isEmpty ? nil : value
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}
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}
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