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//
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// RouteComposer
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// InlineInterceptor.swift
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// https://github.com/ekazaev/route-composer
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//
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// Created by Eugene Kazaev in 2018-2022.
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// Distributed under the MIT license.
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//
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// Become a sponsor:
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// https://github.com/sponsors/ekazaev
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//
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import Foundation
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import UIKit
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/// `InlineInterceptor`
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///
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/// **NB:** It may be used for the purpose of configuration testing, but then replaced with a strongly typed
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/// `RoutingInterceptor` instance.
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public struct InlineInterceptor<C>: RoutingInterceptor {
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// MARK: Properties
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private let prepareBlock: ((_: C) throws -> Void)?
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private let performBlock: (_: C, _: @escaping (RoutingResult) -> Void) -> Void
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// MARK: Methods
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/// Constructor
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///
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/// - Parameter completion: the block to be called when `InlineInterceptor` will take a control over the navigation process.
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///
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/// **NB** For `Router` to be able to continue navigation process, completion block method **MUST** be called.
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public init(prepare prepareBlock: ((_: C) throws -> Void)? = nil, _ performBlock: @escaping (_: C, _: @escaping (RoutingResult) -> Void) -> Void) {
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self.prepareBlock = prepareBlock
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self.performBlock = performBlock
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}
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/// Constructor
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///
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/// - Parameter completion: the block to be called when `InlineInterceptor` will take a control over the navigation process.
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///
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/// **NB** completion method will be called automatically, do not use this constructor if your interceptor
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/// task is asynchronous.
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public init(prepare prepareBlock: ((_: C) throws -> Void)? = nil, _ inlineBlock: @escaping (_: C) throws -> Void) {
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self.prepareBlock = prepareBlock
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self.performBlock = { context, completion in
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do {
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try inlineBlock(context)
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completion(.success)
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} catch {
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completion(.failure(error))
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}
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}
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}
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public func prepare(with context: C) throws {
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try prepareBlock?(context)
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}
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public func perform(with context: C, completion: @escaping (RoutingResult) -> Void) {
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performBlock(context, completion)
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}
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}
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