using System;
using System.Collections.Generic;
using System.Linq;

namespace IdleMafiaBot
{

    sealed partial class Bot
    {

        const bool KnocksOn = false;

        DateTime nextKnock;
        string knockHour;
        readonly HashSet<string> knockTried = new HashSet<string>();
        readonly Dictionary<string, DateTime> knockTricked = new Dictionary<string, DateTime>();
        bool knockSaid;

        void DoKnocks()
        {
            nextKnock = DateTime.UtcNow.AddMinutes(40);
            string hour = DateTime.UtcNow.ToString("yyyyMMddHH");
            if (hour != knockHour) { knockHour = hour; knockTried.Clear(); }
            if (!game.OpenTab(Tab.Territory)) { nextKnock = DateTime.UtcNow.AddMinutes(10); return; }
            if (!game.MapAllFamilies()) { Log("Trick or Treat: the map's MY FAMILY filter didn't read - looked at again in 30 minutes"); nextKnock = DateTime.UtcNow.AddMinutes(30); return; }
            int noTabs = 0, lost = 0;
            for (int tries = 0; tries < 15; tries++)
            {
                var doors = game.MapDoorsDrawn();

                if (doors == null && lost++ < 2)
                {
                    if (game.ProfileShowing()) game.CloseProfile();
                    game.CloseDistrict();
                    if (game.OpenTab(Tab.Territory) && game.MapAllFamilies()) doors = game.MapDoorsDrawn();
                }
                if (doors == null)
                {
                    Log("Trick or Treat: the Territory page didn't read - looked at again in 10 minutes");
                    game.Snapshot("knock map unread", 60);
                    nextKnock = DateTime.UtcNow.AddMinutes(10);
                    return;
                }
                var open = doors.Where(d => !knockTried.Contains(d.Name)).ToList();
                if (open.Count == 0)
                {
                    Log("Trick or Treat: no door left to knock on in sight - looked at again in 20 minutes");
                    nextKnock = DateTime.UtcNow.AddMinutes(20);
                    return;
                }
                var door = game.DoorsInReach(open).FirstOrDefault();
                if (door == null) { game.Wait(3000); continue; }
                knockTried.Add(door.Name);
                if (game.OpenDoor(door) == null) continue;
                try
                {
                    bool noTab;
                    var t = game.OpenKnockTab(out noTab);
                    if (noTab)
                    {
                        game.Snapshot("knock no halloween tab", 60);
                        if (++noTabs < 3) continue;
                        Log("Trick or Treat: no HALLOWEEN tab in 3 districts' windows - the event is over. Looked at again in 6 hours");
                        nextKnock = DateTime.UtcNow.AddHours(6);
                        return;
                    }
                    if (t == null) continue;
                    noTabs = 0;
                    if (!knockSaid) { knockSaid = true; Log("Trick or Treat: the event is on - knocking on other families' doors with the free knocks"); }
                    if (t.Knocks == 0) { KnockAgain(t); return; }
                    if (t.Own || t.Used) continue;
                    if (t.Knock == null)
                    {

                        Log("Trick or Treat: couldn't read " + door.Name + "'s HALLOWEEN tab - looked at again in 30 minutes");
                        game.Snapshot("knock tab unread", 60);
                        nextKnock = DateTime.UtcNow.AddMinutes(30);
                        return;
                    }
                    DateTime until;
                    string family = Parse.Key(t.Owner);
                    if (knockTricked.TryGetValue(family, out until) && DateTime.UtcNow < until) continue;
                    var after = game.Knock(t);
                    if (after == null)
                    {
                        Log("Trick or Treat: pressed KNOCK on " + door.Name + ", no result seen - looked at again in 30 minutes");
                        game.Snapshot("knock no result", 60);
                        nextKnock = DateTime.UtcNow.AddMinutes(30);
                        return;
                    }
                    if (after.Trick)
                    {
                        knockTricked[family] = DateTime.UtcNow.AddHours(6);
                        Log("Trick or Treat: " + t.Owner + " tricked you at " + door.Name + " - left alone for 6 hours");
                        SnapshotOnce("trick or treat trick");
                    }
                    else Log("Trick or Treat: " + t.Owner + "'s " + door.Name + " paid " + (after.Paid >= 0 ? after.Paid + " Candy" : "something") + (after.Candy >= 0 ? " (" + after.Candy + " in all)" : ""));
                    if (after.Knocks == 0) { KnockAgain(after); return; }
                }
                finally
                {
                    if (game.ProfileShowing()) game.CloseProfile();
                    game.CloseDistrict();
                }
            }
        }

        void KnockAgain(KnockTab t)
        {
            int wait = t.NextSeconds > 0 ? t.NextSeconds + 30 * 60 : 40 * 60;
            nextKnock = DateTime.UtcNow.AddSeconds(wait);
            Log("Trick or Treat: no knocks left - back in " + wait / 60 + " minutes");
        }
    }
}