using System;
using System.Collections.Generic;
using System.Globalization;
using UnityEngine;

namespace ShiroginSDK.Runtime.Modules.Data.Scripts
{
    [Serializable]
    public class RuntimeData : BaseData
    {
        public List<StringFloatPair> FloatValues = new();
        public List<StringStringPair> StringValues = new();
        protected override string PrefsKey => "RUNTIME_DATA";

        private float GetFloat(string key, float def = 0)
        {
            var item = FloatValues.Find(i => i.Key == key);
            return item != null ? item.Value : def;
        }

        private void SetFloat(string key, float val)
        {
            FloatValues.RemoveAll(i => i.Key == key);
            FloatValues.Add(new StringFloatPair { Key = key, Value = val });
            Save();
        }

        private string GetString(string key)
        {
            var item = StringValues.Find(i => i.Key == key);
            return item != null ? item.Value : null;
        }

        private void SetString(string key, string val)
        {
            StringValues.RemoveAll(i => i.Key == key);
            StringValues.Add(new StringStringPair { Key = key, Value = val });
            Save();
        }

        // ---------------------------- Ad Cooldown ----------------------------
        public void SetAdCooldown(string productId, float seconds)
        {
            // Debug.Log($"[RuntimeData] SetAdCooldown({productId}) = {seconds}");
            SetFloat($"AD_COOLDOWN_{productId}", seconds);
        }

        public float GetAdCooldown(string productId, float def = 600f)
        {
            var val = GetFloat($"AD_COOLDOWN_{productId}", def);
            // Debug.Log($"[RuntimeData] GetAdCooldown({productId}) -> {val}");
            return val;
        }

        public void SetAdLastWatch(string productId, DateTime time)
        {
            var formatted = time.ToString("o");
            // Debug.Log($"[RuntimeData] SetAdLastWatch({productId}) = {formatted}");
            SetString($"AD_LAST_{productId}", formatted);
        }

        public DateTime GetAdLastWatch(string productId)
        {
            var val = GetString($"AD_LAST_{productId}");
            if (string.IsNullOrEmpty(val))
                return DateTime.MinValue;

            try
            {
                if (DateTime.TryParse(val, null, DateTimeStyles.RoundtripKind, out var parsed))
                    return parsed;
            }
            catch (Exception ex)
            {
                Debug.LogWarning($"[RuntimeData] Invalid date for {productId}: {val} ({ex.Message})");
            }

            return DateTime.MinValue;
        }

        public bool CanWatchAd(string productId)
        {
            var last = GetAdLastWatch(productId);
            var cd = GetAdCooldown(productId);
            if (last == DateTime.MinValue) return true;
            return (DateTime.UtcNow - last).TotalSeconds >= cd;
        }

        public float GetAdRemaining(string productId)
        {
            var last = GetAdLastWatch(productId);
            var cd = GetAdCooldown(productId);
            if (last == DateTime.MinValue) return 0f;

            var elapsed = (DateTime.UtcNow - last).TotalSeconds;
            var remaining = Mathf.Max(0, cd - (float)elapsed);
            return remaining;
        }

        public void ClearAdData(string productId)
        {
            ClearKey($"AD_COOLDOWN_{productId}");
            ClearKey($"AD_LAST_{productId}");
        }

        public void ClearKey(string key)
        {
            FloatValues.RemoveAll(i => i.Key == key);
            StringValues.RemoveAll(i => i.Key == key);
            Save();
        }

        [Serializable]
        public class StringFloatPair
        {
            public string Key;
            public float Value;
        }

        [Serializable]
        public class StringStringPair
        {
            public string Key;
            public string Value;
        }
    }
}