Refactor LegacyMediaPickerUI and WebSearchUI [skip ci]

submodules/WebSearchUI/Sources/WebSearchRecentQueries.swift

@@ -0,0 +1,74 @@
+import Foundation
+import UIKit
+import Postbox
+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: OrderedItemListEntryContents {
+    init() {
+    }
+    
+    public init(decoder: PostboxDecoder) {
+    }
+    
+    public func encode(_ encoder: PostboxEncoder) {
+    }
+}
+
+func addRecentWebSearchQuery(postbox: Postbox, string: String) -> Signal<Void, NoError> {
+    return postbox.transaction { transaction in
+        if let itemId = WebSearchRecentQueryItemId(string) {
+            transaction.addOrMoveToFirstPositionOrderedItemListItem(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries, item: OrderedItemListEntry(id: itemId.rawValue, contents: RecentWebSearchQueryItem()), removeTailIfCountExceeds: 100)
+        }
+    }
+}
+
+func removeRecentWebSearchQuery(postbox: Postbox, string: String) -> Signal<Void, NoError> {
+    return postbox.transaction { transaction -> Void in
+        if let itemId = WebSearchRecentQueryItemId(string) {
+            transaction.removeOrderedItemListItem(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries, itemId: itemId.rawValue)
+        }
+    }
+}
+
+func clearRecentWebSearchQueries(postbox: Postbox) -> Signal<Void, NoError> {
+    return postbox.transaction { transaction -> Void in
+        transaction.replaceOrderedItemListItems(collectionId: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries, items: [])
+    }
+}
+
+func webSearchRecentQueries(postbox: Postbox) -> Signal<[String], NoError> {
+    return postbox.combinedView(keys: [.orderedItemList(id: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries)])
+        |> mapToSignal { view -> Signal<[String], NoError> in
+            return postbox.transaction { transaction -> [String] in
+                var result: [String] = []
+                if let view = view.views[.orderedItemList(id: ApplicationSpecificOrderedItemListCollectionId.webSearchRecentQueries)] as? OrderedItemListView {
+                    for item in view.items {
+                        let value = WebSearchRecentQueryItemId(item.id).value
+                        result.append(value)
+                    }
+                }
+                return result
+            }
+    }
+}