2018-12-30 06:57:06 +00:00
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//
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// MasStoreSearch.swift
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// MasKit
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//
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// Created by Ben Chatelain on 12/29/18.
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// Copyright © 2018 mas-cli. All rights reserved.
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//
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/// Manages searching the MAS catalog through the iTunes Search and Lookup APIs.
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2019-01-05 00:54:00 +00:00
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public class MasStoreSearch: StoreSearch {
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2019-01-06 19:26:08 +00:00
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private let networkManager: NetworkManager
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2019-01-02 05:44:33 +00:00
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/// Designated initializer.
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2019-01-06 19:26:08 +00:00
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public init(networkManager: NetworkManager = NetworkManager()) {
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self.networkManager = networkManager
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2019-01-02 05:44:33 +00:00
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}
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2018-12-30 06:57:06 +00:00
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2019-01-12 00:10:36 +00:00
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/// Searches for an app.
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///
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/// - Parameter appName: MAS ID of app
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/// - Returns: Search results list of app. List will have no records if there were no matches. Never nil.
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/// - Throws: Error if there is a problem with the network request.
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public func search(for appName: String) throws -> SearchResultList {
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guard let url = searchURL(for: appName)
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else { throw MASError.urlEncoding }
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let result = networkManager.loadDataSync(from: url)
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// Unwrap network result
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guard case let .success(data) = result
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else {
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if case let .failure(error) = result {
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throw error
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}
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throw MASError.noData
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}
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do {
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let results = try JSONDecoder().decode(SearchResultList.self, from: data)
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return results
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} catch {
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throw MASError.jsonParsing(error: error as NSError)
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}
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}
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2019-01-02 05:44:33 +00:00
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/// Looks up app details.
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///
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/// - Parameter appId: MAS ID of app
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/// - Returns: Search result record of app or nil if no apps match the ID.
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/// - Throws: Error if there is a problem with the network request.
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2019-01-18 05:06:25 +00:00
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public func lookup(app appId: Int) throws -> SearchResult? {
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2019-01-06 19:26:08 +00:00
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guard let url = lookupURL(forApp: appId)
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2019-01-12 00:10:36 +00:00
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else { throw MASError.urlEncoding }
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2019-01-06 19:26:08 +00:00
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let result = networkManager.loadDataSync(from: url)
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// Unwrap network result
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guard case let .success(data) = result
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2019-01-02 05:44:33 +00:00
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else {
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2019-01-06 19:26:08 +00:00
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if case let .failure(error) = result {
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throw error
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}
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2019-01-12 00:10:36 +00:00
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throw MASError.noData
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2019-01-02 05:44:33 +00:00
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}
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2019-01-12 00:10:36 +00:00
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do {
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let results = try JSONDecoder().decode(SearchResultList.self, from: data)
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2019-01-02 05:44:33 +00:00
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2019-01-12 00:10:36 +00:00
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guard let searchResult = results.results.first
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else { return nil }
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2019-01-02 05:44:33 +00:00
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2019-01-12 00:10:36 +00:00
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return searchResult
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} catch {
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throw MASError.jsonParsing(error: error as NSError)
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}
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2019-01-02 05:44:33 +00:00
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}
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2018-12-30 06:57:06 +00:00
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}
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