using UnityEngine.Serialization;

namespace Guru
{
    using System;
    using UnityEngine;
    using System.Collections.Generic;

    
    [Serializable]
    public class GuruInventoryModel: GuruModelBase
    {
        public Dictionary<string, UserItemInfo> data;
        public Dictionary<string, UserItemInfo> Data => data ??= new Dictionary<string, UserItemInfo>(20);
        
        public bool RegisterItem(string itemName, int initCount = 0, string type = "")
        {
            if (!HasItem(itemName))
            {
                Data[itemName] = new UserItemInfo()
                {
                    key = itemName,
                    free_amount = initCount,
                    paid_amount = 0,
                    type = type
                };
                return true;
            }
            return false;
        }
        
        
        public bool HasItem(string itemName)
        {
            return Data.ContainsKey(itemName);
        }

        public UserItemInfo GetItemInfo(string itemName)
        {
            if (Data.TryGetValue(itemName, out var item))
            {
                return item;
            }
            return null;
        }

    }


    [Serializable]
    public class UserItemInfo
    {
        public bool enableZeroProtection = true; // 默认开启 0 值保护
        public string key;
        public int free_amount;
        public int paid_amount;
        public string type;

        /// <summary>
        /// 道具总量
        /// </summary>
        public int TotalAmount => free_amount + paid_amount;
        
        /// <summary>
        /// 增减道具量
        /// </summary>
        /// <param name="amount"></param>
        /// <param name="isPaid"></param>
        public bool Change(int amount, bool isPaid = false)
        {
            if (amount == 0) return false;
            
            if (isPaid)
            {
                if (amount < 0 && enableZeroProtection && paid_amount + amount < 0)
                    return false;
                
                paid_amount += amount;
            }
            else
            {
                if (amount < 0 && enableZeroProtection && free_amount + amount < 0)
                    return false;
                
                free_amount += amount;
            }

            return true;
        }
        
        /// <summary>
        /// 强制设置数量
        /// </summary>
        /// <param name="freeAmount"></param>
        /// <param name="paidAmount"></param>
        public void Set(int freeAmount, int paidAmount = 0)
        {
            paid_amount = paidAmount;
            free_amount = freeAmount;
        }
        
        /// <summary>
        /// 数值清零
        /// </summary>
        public void Clean()
        {
            paid_amount = 0;
            free_amount = 0;
        }


    }



}