打造实时沟通体验

6:41 - Set up a conversation manager

// Set up a conversation manager

import LiveCommunicationKit

let configuration = ConversationManager.Configuration(
  ringtoneName: "SampleRingtone.caf",
  iconTemplateImageData: UIImage(named: "SampleIcon")?.pngData(),
  maximumConversationGroups: 1,
  maximumConversationsPerConversationGroup: 2,
  includesConversationInRecents: true,
  supportsVideo: true,
  supportedHandleTypes: [.phoneNumber, .emailAddress]
)

let manager = ConversationManager(configuration: configuration)
manager.delegate = self

9:22 - Report the incoming conversation to the system

// Report the incoming conversation to the system

import LiveCommunicationKit
import PushKit

final class SamplePushHandler: NSObject, PKPushRegistryDelegate {
  func pushRegistry(
    _ registry: PKPushRegistry,
    didReceiveIncomingVoIPPushWith payload: PKPushPayload,
    metadata: PKVoIPPushMetadata) async {

    guard let (handle, uuid) = parseConversationPayload(from: payload) else { return }

    let capabilities = [.video, .pausing, .merging]
    let update = Conversation.Update(members: [handle], capabilities: capabilities)
    try? await manager.reportNewIncomingConversation(uuid: uuid, update: update)
  }
}

9:57 - Implement the delegate

// Implement the delegate

import LiveCommunicationKit

final class SampleDelegate: ConversationManagerDelegate {
  func conversationManager(
    _ manager: ConversationManager,
    perform action: ConversationAction
  ) {
    switch action {
    case let action as JoinConversationAction:
      handleJoinAction(action)
    default:
      action.fail()
    }
  }
}

10:13 - Fulfill the join action

// Handle a failed connection

extension SampleDelegate {
 func handleJoinAction(_ action: JoinConversationAction) {
    guard let conversation = manager.conversations.first(where: {$0.uuid == uuid })else {
      return action.fail()
    }

    manager.reportConversationEvent(.conversationStartedConnecting(.now), for: conversation)

    Task {
      do {
        try await setupMediaStream(with: action.conversationUUID)
        manager.reportConversationEvent(.conversationConnected(.now), for: conversation)
        action.fulfill(dateConnected: .now)
      } catch {
        action.fail()
      }
    }
  }
}

11:17 - Route end actions

// Route end actions

final class SampleDelegate: ConversationManagerDelegate {
  // …
  func conversationManager(
    _ manager: ConversationManager,
    perform action: ConversationAction
  ) {
    switch action {
    case let action as JoinConversationAction:
      handleJoinAction(action)
    case let action as EndConversationAction:
      handleEndAction(action)
    default:
      action.fail()
    }
  }
}

12:14 - Create a start action

let startAction = StartConversationAction(
  conversationUUID: UUID(),
  handles: [Handle(type: .phoneNumber, value: "+1-650-555-0199", displayName: "Ryan Notch")],
  isVideo: false
)

12:23 - Perform the action

try await manager.perform([startAction])

12:29 - Route start actions

// Route start actions

final class SampleDelegate: ConversationManagerDelegate {
  // …
  func conversationManager(
    _ manager: ConversationManager,
    perform action: ConversationAction
  ) {
    switch action {
    case let action as JoinConversationAction:
      handleJoinAction(action)
    case let action as EndConversationAction:
      handleEndAction(action)
    case let action as StartConversationAction:
      handleStartAction(action)
    default:
      action.fail()
    }
  }
}

13:51 - Start group conversations

// Start group conversations

let adam = Handle(type: .emailAddress,
                  value: "adam.halwani@icloud.com",
                  displayName: "Adam Halwani")
let david = Handle(type: .emailAddress,
                   value: "david@example.com",
                   displayName: "David Evans")
let ryan = Handle(type: .phoneNumber,
                  value: "+16505550199",
                  displayName: "Ryan Notch")

let startAction = StartConversationAction(
  conversationUUID: UUID(),
  handles: [david, ryan],
  isVideo: false
)
try await manager.perform([startAction])

14:01 - Report group membership updates

// Report group membership updates

let update = Conversation.Update(
  localMember: adam,
  members: [david, ryan],
  activeRemoteMembers: [david, ryan],
  capabilities: [.merging, .pausing, .unmerging]
)

manager.reportConversationEvent(
  .conversationUpdated(update),
  for: conversation
)

15:26 - Route merge actions

// Route merge actions

final class SampleDelegate: ConversationManagerDelegate {
  func conversationManager(
    _ manager: ConversationManager,
    perform action: ConversationAction
  ) {
    switch action {
    case let action as JoinConversationAction:
      handleJoinAction(action)
    case let action as EndConversationAction:
      handleEndAction(action)
    case let action as StartConversationAction:
        handleStartAction(action)
    case let action as MergeConversationAction:
      handleMergeAction(action)
    default:
      action.fail()
    }
  }
}

15:33 - Handle the merge action

// Handle the merge action

extension SampleDelegate {
  func handleMergeAction(_ action: MergeConversationAction) {
    let sourceUUID = action.conversationUUID
    let targetUUID = action.conversationUUIDToMergeWith
    guard manager.conversations.contains(where: { $0.uuid == sourceUUID }),
          manager.conversations.contains(where: { $0.uuid == targetUUID }) else {
      return action.fail()
    }

    Task {
      do {
        let update = try await combineStreams(from: sourceUUID, into: targetUUID)
        manager.reportConversationEvent(.conversationUpdated(update), for: target)
        action.fulfill()
      } catch {
        action.fail()
      }
    }
  }
}