examples/tv-casting-app/darwin/TvCasting/TvCasting/MCContentLauncherLaunchURLExampleViewModel.swift

/**
 *
 *    Copyright (c) 2020-2024 Project CHIP Authors
 *
 *    Licensed under the Apache License, Version 2.0 (the "License");
 *    you may not use this file except in compliance with the License.
 *    You may obtain a copy of the License at
 *
 *        http://www.apache.org/licenses/LICENSE-2.0
 *
 *    Unless required by applicable law or agreed to in writing, software
 *    distributed under the License is distributed on an "AS IS" BASIS,
 *    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *    See the License for the specific language governing permissions and
 *    limitations under the License.
 */


import Foundation
import os.log

class MCContentLauncherLaunchURLExampleViewModel: ObservableObject {
    let Log = Logger(subsystem: "com.matter.casting",
                     category: "MCContentLauncherLaunchURLExampleViewModel")

    @Published var status: String?;

    // VendorId of the MCEndpoint on the MCCastingPlayer that the MCCastingApp desires to interact with after connection
    let sampleEndpointVid: Int = 65521

    func invokeCommand(castingPlayer: MCCastingPlayer, contentUrl: String, displayString: String)
    {
        // select the MCEndpoint on the MCCastingPlayer to invoke the command on
        if let endpoint: MCEndpoint = castingPlayer.endpoints().filter({ $0.vendorId().intValue == sampleEndpointVid}).first
        {
            // validate that the selected endpoint supports the ContentLauncher cluster
            if(!endpoint.hasCluster(MCEndpointClusterTypeContentLauncher))
            {
                self.Log.error("No ContentLauncher cluster supporting endpoint found")
                DispatchQueue.main.async
                {
                    self.status = "No ContentLauncher cluster supporting endpoint found"
                }
                return
            }
            
            // get ContentLauncher cluster from the endpoint
            let contentLaunchercluster: MCContentLauncherCluster = endpoint.cluster(for: MCEndpointClusterTypeContentLauncher) as! MCContentLauncherCluster

            // get the launchURLCommand from the contentLauncherCluster
            let launchURLCommand: MCContentLauncherClusterLaunchURLCommand? = contentLaunchercluster.launchURLCommand()
            if(launchURLCommand == nil)
            {
                self.Log.error("LaunchURL not supported on cluster")
                DispatchQueue.main.async
                {
                    self.status = "LaunchURL not supported on cluster"
                }
                return
            }
                
            // create the LaunchURL request
            let request: MCContentLauncherClusterLaunchURLParams = MCContentLauncherClusterLaunchURLParams()
            request.contentURL = contentUrl
            request.displayString = displayString
                    
            // call invoke on launchURLCommand while passing in a completion block
            launchURLCommand!.invoke(request, context: nil, completion: { context, err, response in
                DispatchQueue.main.async
                {
                    if(err == nil)
                    {
                        self.Log.info("LaunchURLCommand invoke completion success with \(String(describing: response))")
                        self.status = "Success. Response data: \(String(describing: response?.data))"
                    }
                    else
                    {
                        self.Log.error("LaunchURLCommand invoke completion failure with \(String(describing: err))")
                        self.status = "Failure: \(String(describing: err))"
                    }
                }
            },
            timedInvokeTimeoutMs: 5000) // time out after 5000ms
        }
        else
        {
            self.Log.error("No endpoint matching the example VID found")
            DispatchQueue.main.async
            {
                self.status = "No endpoint matching the example VID found"
            }
        }
    }
}