XXMessengerClient - Search Users

• Fix GetSingleUseParams.unimplemented extension.
• Add MessengerSearchUsers function.

Sources/XXMessengerClient/Messenger/Functions/MessengerSearchUsers.swift

+import Foundation
+import XCTestDynamicOverlay
+import XXClient
+
+public struct MessengerSearchUsers {
+  public struct Query: Equatable {
+    public init(
+      username: String? = nil,
+      email: String? = nil,
+      phone: String? = nil
+    ) {
+      self.username = username
+      self.email = email
+      self.phone = phone
+    }
+
+    public var username: String?
+    public var email: String?
+    public var phone: String?
+  }
+
+  public enum Error: Swift.Error, Equatable {
+    case notConnected
+    case notLoggedIn
+  }
+
+  public var run: (Query) throws -> [Contact]
+
+  public func callAsFunction(query: Query) throws -> [Contact] {
+    try run(query)
+  }
+}
+
+extension MessengerSearchUsers {
+  public static func live(_ env: MessengerEnvironment) -> MessengerSearchUsers {
+    MessengerSearchUsers { query in
+      guard let e2e = env.e2e() else {
+        throw Error.notConnected
+      }
+      guard let ud = env.ud() else {
+        throw Error.notLoggedIn
+      }
+      var result: Result<[Contact], Swift.Error>!
+      let semaphore = DispatchSemaphore(value: 0)
+      _ = try env.searchUD(
+        e2eId: e2e.getId(),
+        udContact: try ud.getContact(),
+        facts: query.facts,
+        singleRequestParamsJSON: env.getSingleUseParams(),
+        callback: .init { searchResult in
+          switch searchResult {
+          case .success(let contacts):
+            result = .success(contacts)
+          case .failure(let error):
+            result = .failure(error)
+          }
+          semaphore.signal()
+        }
+      )
+      semaphore.wait()
+      return try result.get()
+    }
+  }
+}
+
+extension MessengerSearchUsers.Query {
+  public var isEmpty: Bool {
+    [username, email, phone]
+      .compactMap { $0 }
+      .map { $0.isEmpty == false }
+      .contains(where: { $0 == true }) == false
+  }
+
+  var facts: [Fact] {
+    var facts: [Fact] = []
+    if let username = username, username.isEmpty == false {
+      facts.append(Fact(fact: username, type: 0))
+    }
+    if let email = email, email.isEmpty == false {
+      facts.append(Fact(fact: email, type: 1))
+    }
+    if let phone = phone, phone.isEmpty == false {
+      facts.append(Fact(fact: phone, type: 2))
+    }
+    return facts
+  }
+}
+
+extension MessengerSearchUsers {
+  public static let unimplemented = MessengerSearchUsers(
+    run: XCTUnimplemented("\(Self.self)")
+  )
+}