using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Threading;
using System.Threading.Tasks;
using director;
using Director;
using franz;
using Newtonsoft.Json;
using Schedulable.Show;

namespace ShowHandlers
{
    public class YoutubeHandler : ShowHandler
    {
        private YoutubeRelease config;
        private List<string> agentsPresent = new List<string>();
        private Dictionary<string, bool> checksProgress = new Dictionary<string, bool>();
        private readonly AutoResetEvent checkSignal = new AutoResetEvent(false);

        public override void Handle(iCalHoopJumping.CalendarOccurrence evt)
        {
            Console.WriteLine($"begin youtube handler. current time {DateTime.Now.ToLongTimeString()}");
            Console.WriteLine(JsonConvert.SerializeObject(evt));
            var ytConfig = File.ReadAllText(Program.conf.show_template_yt_release);
            config = JsonConvert.DeserializeObject<YoutubeRelease>(ytConfig);
            Task.Run(() => PreShow(evt));
            Console.WriteLine("kicked off the pre-show");
            if (evt.OccurrenceStart > DateTime.Now)
            {
                Task.WaitAll(Task.Delay(evt.OccurrenceStart - DateTime.Now));
            }
            //youtube releases in particular jump right to post-show
            PostShow(evt);
        }
        ~YoutubeHandler()
        {
            //Telefranz.Instance.removeHandler<silver_messages.global.report>(agentReports);
            //Telefranz.Instance.removeHandler<silver_messages.directorial.check_complete>(checkReports);
        }
        protected void PreShow(iCalHoopJumping.CalendarOccurrence evt)
        {
            Console.WriteLine($"it's the pre-show, showtime at: {evt.OccurrenceStart}");
            config.PreShow.AgentsNeeded = config.PreShow.AgentsNeeded.Select(s => s.ToLower()).ToList();

            var commandLeadNeeded = TimeSpan.FromMinutes(15);
            foreach(var cl in config.PreShow.Commands)
            {
                if(cl.leadTime > commandLeadNeeded){
                    commandLeadNeeded = cl.leadTime;
                }
            }

            preShow_GetAgents(evt, commandLeadNeeded + TimeSpan.FromMinutes(10));
            preShow_RunChecks(evt, commandLeadNeeded);
            preShow_RunCommands(evt);
            Console.WriteLine("pre show seems to be set.");
        }
        protected void preShow_GetAgents(iCalHoopJumping.CalendarOccurrence evt, TimeSpan leadNeeded)
        {
            Console.WriteLine($"preshow agents needed: {string.Join(", ", config.PreShow.AgentsNeeded)}");
            agentsPresent.Clear();

            //TODO: actual telefranz
            //Telefranz.Instance.addHandler<silver_messages.global.report>(agentReports);
            //Telefranz.Instance.ProduceMessage(new silver_messages.global.sound_off());
            while (config.PreShow.AgentsNeeded.Where(ap => !agentsPresent.Contains(ap))?.Count() > 0)
            {
                checkSignal.WaitOne(TimeSpan.FromSeconds(15));
                if(DateTime.Now > evt.OccurrenceStart - leadNeeded)
                {
                    var miaAgents = string.Join(", ", config.PreShow.AgentsNeeded.Where(ap => !agentsPresent.Contains(ap)));
                    HumanCommunication.Instance.Say($"Youtube handler getting antsy and going forward. mia agents: {miaAgents}",
                        HumanCommunication.LogLevel.Error);
                    break;
                }
            }
            Console.WriteLine("going forward");
        }
        protected void preShow_RunChecks(iCalHoopJumping.CalendarOccurrence evt, TimeSpan leadNeeded)
        {
            checksProgress.Clear();
            var argsList = new List<string>() { JsonConvert.SerializeObject(evt) };
            //Telefranz.Instance.addHandler()
            foreach (var c in config.PreShow.Checks)
            {
                checksProgress.Add(c.cmd, false);
            }
            Console.WriteLine($"pre show: run checks: {string.Join(", ", config.PreShow.Checks.Select(c => c.cmd))}");
            Action issueChecks = () => {
                foreach (var checkCmd in checksProgress.Where(cp => cp.Value == false).Select(kvp => kvp.Key))
                {
                    var check = config.PreShow.Checks.First(clc => clc.cmd == checkCmd);
                    // Telefranz.Instance.ProduceMessage(new silver_messages.directorial.execute_check()
                    // {
                    //     check = check.cmd,
                    //     args = argsList.Append(check.args).ToList()
                    // });
                }
            };
            issueChecks();
            while (checksProgress.ContainsValue(false))
            {
                checkSignal.WaitOne(TimeSpan.FromSeconds(15));
                if(DateTime.Now > evt.OccurrenceStart - leadNeeded)
                {
                    var stillFailing = string.Join(", ", checksProgress.Where(cp => cp.Value == false).Select(cp => cp.Key));
                    HumanCommunication.Instance.Say($"Youtube handler getting antsy and going forward. checks still failing: {stillFailing}",
                        HumanCommunication.LogLevel.Error);
                    break;
                }
                issueChecks();
            }
            Console.WriteLine("going forward");
        }
        protected void preShow_RunCommands(iCalHoopJumping.CalendarOccurrence evt)
        {
            Console.WriteLine($"pre show: run commands: {string.Join(", ", config.PreShow.Commands.Select(c => c.cmd))}");
            foreach(var cmd in config.PreShow.Commands.OrderByDescending(cmd => cmd.leadTime))
            {
                if(DateTime.Now < evt.OccurrenceStart - cmd.leadTime)
                {
                    var waitTime = evt.OccurrenceStart - cmd.leadTime - DateTime.Now;
                    Console.WriteLine($"waiting {waitTime} before executing {cmd.cmd}");
                    Task.WaitAll(Task.Delay(waitTime));
                }
                var argsList = new List<string>() { JsonConvert.SerializeObject(evt) }.Append(cmd.args).ToList();

                Console.WriteLine($"telefranzing execution: {cmd.cmd} with args {string.Join(' ', argsList)}");
                // Telefranz.Instance.ProduceMessage(new silver_messages.directorial.execute_command() 
                // {
                //     command = cmd.cmd,
                //     args = argsList,
                //     timeout = (int)cmd.timeout.TotalMilliseconds //TODO: update when franz gets updated
                // });
            }
            Console.WriteLine("seems all pre-show commands have been issued, but to be fair I wasn't listening for output.");
        }
        protected void agentReports(silver_messages.global.report r)
        {
            if (config.PreShow.AgentsNeeded?.FirstOrDefault(an => an.ToLower() == r.name.ToLower()) != null)
            {
                lock (agentsPresent)
                {
                    agentsPresent.Add(r.name.ToLower());
                    checkSignal.Set();
                }
            }
        }
        protected void checkReports(silver_messages.directorial.check_complete check)
        {
            var myCheck = config.PreShow.Checks.FirstOrDefault(psc => psc.cmd == check.check);
            if (myCheck != null)
            {
                lock (checksProgress)
                {
                    checksProgress[myCheck.cmd] = check.result == myCheck.target;
                }
                checkSignal.Set();
            }
        }
        protected void PostShow(iCalHoopJumping.CalendarOccurrence evt)
        {
            
            Console.WriteLine($"post show: run commands: {string.Join(", ", config.PostShow.Commands.Select(c => c.cmd))}");
            foreach(var cmd in config.PostShow.Commands)
            {
                var argsList = new List<string>() { JsonConvert.SerializeObject(evt) }.Append(cmd.args).ToList();

                Console.WriteLine($"telefranzing execution: {cmd.cmd} with args {string.Join(' ', argsList)}");
                // Telefranz.Instance.ProduceMessage(new silver_messages.directorial.execute_command() 
                // {
                //     command = cmd.cmd,
                //     args = argsList,
                //     timeout = (int)cmd.timeout.TotalMilliseconds //TODO: update when franz gets updated
                // });
            }
            Console.WriteLine("seems all post-show commands have been issued, but to be fair I wasn't listening for output.");
        }
    }
}