Merge commit '7621e2f8dec938cf48181c8b10afc9b01f444e68' into beta

submodules/WebSearchUI/Sources/WebSearchRecentQueries.swift

@@ -0,0 +1,69 @@
+import Foundation
+import UIKit
+import Postbox
+import TelegramCore
+import SwiftSignalKit
+import TelegramUIPreferences
+
+private struct WebSearchRecentQueryItemId {
+    public let rawValue: MemoryBuffer
+    
+    var value: String {
+        return String(data: self.rawValue.makeData(), encoding: .utf8) ?? ""
+    }
+    
+    init(_ rawValue: MemoryBuffer) {
+        self.rawValue = rawValue
+    }
+    
+    init?(_ value: String) {
+        if let data = value.data(using: .utf8) {
+            self.rawValue = MemoryBuffer(data: data)
+        } else {
+            return nil
+        }
+    }
+}
+
+public final class RecentWebSearchQueryItem: Codable {
+    init() {
+    }
+    
+    public init(from decoder: Decoder) throws {
+    }
+    
+    public func encode(to encoder: Encoder) throws {
+    }
+}
+
+func addRecentWebSearchQuery(engine: TelegramEngine, string: String) -> Signal<Never, NoError> {
+    if let itemId = WebSearchRecentQueryItemId(string) {
+        return engine.orderedLists.addOrMoveToFirstPosition(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries, id: itemId.rawValue, item: RecentWebSearchQueryItem(), removeTailIfCountExceeds: 100)
+    } else {
+        return .complete()
+    }
+}
+
+func removeRecentWebSearchQuery(engine: TelegramEngine, string: String) -> Signal<Never, NoError> {
+    if let itemId = WebSearchRecentQueryItemId(string) {
+        return engine.orderedLists.removeItem(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries, id: itemId.rawValue)
+    } else {
+        return .complete()
+    }
+}
+
+func clearRecentWebSearchQueries(engine: TelegramEngine) -> Signal<Never, NoError> {
+    return engine.orderedLists.clear(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries)
+}
+
+func webSearchRecentQueries(engine: TelegramEngine) -> Signal<[String], NoError> {
+    return engine.data.subscribe(TelegramEngine.EngineData.Item.OrderedLists.ListItems(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries))
+    |> map { items -> [String] in
+        var result: [String] = []
+        for item in items {
+            let value = WebSearchRecentQueryItemId(item.id).value
+            result.append(value)
+        }
+        return result
+    }
+}