using UnityEngine;
using Aws.GameLift.Server;
using System.Collections.Generic;

public class GameLiftServerExampleBehavior : MonoBehaviour
{
    //This is an example of a simple integration with GameLift server SDK that will make game server processes go active on GameLift!
    public void Start()
    {
        //Identify port number (hard coded here for simplicity) the game server is listening on for player connections
        var listeningPort = 7777;

        //InitSDK will establish a local connection with GameLift's agent to enable further communication.
        var initSDKOutcome = GameLiftServerAPI.InitSDK();
        if (initSDKOutcome.Success)
        {
            ProcessParameters processParameters = new ProcessParameters(
                (gameSession) => {
                    //When a game session is created, GameLift sends an activation request to the game server and passes along the game session object containing game properties and other settings.
                    //Here is where a game server should take action based on the game session object.
                    //Once the game server is ready to receive incoming player connections, it should invoke GameLiftServerAPI.ActivateGameSession()
                    GameLiftServerAPI.ActivateGameSession();
                },
                (updateGameSession) => {
                    //When a game session is updated (e.g. by FlexMatch backfill), GameLiftsends a request to the game
                    //server containing the updated game session object.  The game server can then examine the provided
                    //matchmakerData and handle new incoming players appropriately.
                    //updateReason is the reason this update is being supplied.
                },
                () => {
                    //OnProcessTerminate callback. GameLift will invoke this callback before shutting down an instance hosting this game server.
                    //It gives this game server a chance to save its state, communicate with services, etc., before being shut down.
                    //In this case, we simply tell GameLift we are indeed going to shutdown.
                    GameLiftServerAPI.ProcessEnding();
                }, 
                () => {
                    //This is the HealthCheck callback.
                    //GameLift will invoke this callback every 60 seconds or so.
                    //Here, a game server might want to check the health of dependencies and such.
                    //Simply return true if healthy, false otherwise.
                    //The game server has 60 seconds to respond with its health status. GameLift will default to 'false' if the game server doesn't respond in time.
                    //In this case, we're always healthy!
                    return true;
                },
                listeningPort, //This game server tells GameLift that it will listen on port 7777 for incoming player connections.
                new LogParameters(new List<string>()
                {
                    //Here, the game server tells GameLift what set of files to upload when the game session ends.
                    //GameLift will upload everything specified here for the developers to fetch later.
                    "/local/game/logs/myserver.log"
                }));

            //Calling ProcessReady tells GameLift this game server is ready to receive incoming game sessions!
            var processReadyOutcome = GameLiftServerAPI.ProcessReady(processParameters);
            if (processReadyOutcome.Success)
            {
                print("ProcessReady success.");
            }
            else
            {
                print("ProcessReady failure : " + processReadyOutcome.Error.ToString());
            }
        }
        else
        {
            print("InitSDK failure : " + initSDKOutcome.Error.ToString());
        }
    }

    void OnApplicationQuit()
    {
        //Make sure to call GameLiftServerAPI.Destroy() when the application quits. This resets the local connection with GameLift's agent.
        GameLiftServerAPI.Destroy();
    }
}