namespace Supercell.Laser.Logic.Battle
{
    using System;
    using System.IO;
    using System.Text.Json;
    using System.Collections.Generic;
    using Supercell.Laser.Logic.Listener;

    public static class CommunityEvent
    {
        // === НАСТРОЙКИ ИВЕНТА ===
        public static readonly DateTime EventStart  = new DateTime(2026, 7, 19,  8, 0, 0, DateTimeKind.Utc);
        public static readonly DateTime EventEnd    = new DateTime(2026, 8, 12, 12, 0, 0, DateTimeKind.Utc);
        public static readonly int GoalWins         = 10000; // цель побед
        public static readonly int GemsReward       = 100;   // гемов каждому

        // Этапы: при достижении X побед → Y гемов (до финала)
        public static readonly (int wins, int gems, string key)[] Milestones = new[]
        {
            (1000,  10, "event_milestone_1000"),
            (3000,  25, "event_milestone_3000"),
            (6000,  50, "event_milestone_6000"),
            (10000, 100, "event_milestone_10000"),
        };
        // ========================

        private static readonly string SavePath = "event_progress.json";
        private static readonly object _lock = new object();

        private static int _totalWins;
        private static HashSet<int> _rewardedMilestones = new HashSet<int>();

        public static int TotalWins => _totalWins;

        public static void Load()
        {
            try
            {
                if (!File.Exists(SavePath)) { _totalWins = 0; return; }
                string json = File.ReadAllText(SavePath);
                var data = JsonSerializer.Deserialize<EventData>(json);
                if (data != null)
                {
                    _totalWins = data.TotalWins;
                    _rewardedMilestones = new HashSet<int>(data.RewardedMilestones ?? new List<int>());
                }
            }
            catch { _totalWins = 0; }
        }

        private static void Save()
        {
            try
            {
                var data = new EventData
                {
                    TotalWins = _totalWins,
                    RewardedMilestones = new List<int>(_rewardedMilestones)
                };
                File.WriteAllText(SavePath, JsonSerializer.Serialize(data));
            }
            catch { }
        }

        public static void AddWin()
        {
            DateTime now = DateTime.UtcNow;
            if (now < EventStart || now > EventEnd) return;

            lock (_lock)
            {
                _totalWins++;
                Save();
                CheckMilestones();
            }
        }

        private static void CheckMilestones()
        {
            foreach (var (wins, gems, key) in Milestones)
            {
                if (_totalWins >= wins && !_rewardedMilestones.Contains(wins))
                {
                    _rewardedMilestones.Add(wins);
                    Save();
                    RewardAllPlayers(gems, wins, key);
                }
            }
        }

        private static void RewardAllPlayers(int gems, int winsGoal, string notifKey)
        {
            Console.WriteLine($"[EVENT] Достигнуто {winsGoal} побед! Выдаём {gems} гемов всем игрокам...");
            LogicServerListener.Instance.OnCommunityMilestone(gems, winsGoal, notifKey);
        }

        private class EventData
        {
            public int TotalWins { get; set; }
            public List<int> RewardedMilestones { get; set; }
        }
    }
}