using System;
using System.Collections.Generic;
using Newtonsoft.Json;
using Newtonsoft.Json.Linq;

namespace ShrinkDataSaver
{
    [Serializable]
    public class SaveMeta
    {
        public int SlotIndex { get; set; }
        public string SlotName { get; set; } = "New Save";
        public int SaveVersion { get; set; } = 1;
        public long LastModified { get; set; }
        public float PlaytimeSeconds { get; set; }
        public string ScreenshotBase64 { get; set; }
        public bool IsEncrypted { get; set; }

        [JsonIgnore]
        public DateTime LastModifiedTime => DateTimeOffset.FromUnixTimeSeconds(LastModified).LocalDateTime;
    }

    [Serializable]
    internal class SavePacket
    {
        public SaveMeta Meta { get; set; }
        public Dictionary<string, JToken> Modules { get; set; } = new();
        public string EncryptedModules { get; set; }
    }


    public interface ISaveModule
    {
        string Key { get; }
        object SerializeRaw();
        void DeserializeRaw(JToken data);
    }

    public interface ISaveModule<T> : ISaveModule
    {
        T Serialize();
        void Deserialize(T data);
        object ISaveModule.SerializeRaw() => Serialize();
        void ISaveModule.DeserializeRaw(JToken data) => Deserialize(data.ToObject<T>());
    }

    internal class LambdaSaveModule<T> : ISaveModule<T>
    {
        public string Key { get; }
        private readonly Func<T> _serialize;
        private readonly Action<T> _deserialize;

        public LambdaSaveModule(string key, Func<T> serialize, Action<T> deserialize)
        {
            Key = key; _serialize = serialize; _deserialize = deserialize;
        }
        public T Serialize() => _serialize();
        public void Deserialize(T data) => _deserialize(data);
    }


    public class SaveOptions
    {
        public string SlotName = "New Save";
        public bool CaptureScreenshot = false;
#if UNITY_5_3_OR_NEWER
        public UnityEngine.Texture2D Screenshot = null;
#else
        public byte[] Screenshot;
#endif
        public bool Encrypt = false;
        public string EncryptionKey = null;
    }


    public class ModuleConfig
    {
        /// <summary>是否参与云存档同步（设置模块应设为 false）</summary>
        public bool EnableCloudSync { get; set; } = true;

        /// <summary>自动保存间隔（秒），0 表示不自动保存</summary>
        public float AutoSaveIntervalSeconds { get; set; } = 0f;

        /// <summary>是否为关键模块（关键模块序列化失败将中止整个保存操作）</summary>
        public bool CriticalModule { get; set; } = false;
    }


    public class SaveStartedEventArgs
    {
        public int SlotIndex { get; set; }
        public long Timestamp { get; set; }
    }

    public class SaveCompletedEventArgs
    {
        public int SlotIndex { get; set; }
        public string[] ModuleNames { get; set; }
        public long Timestamp { get; set; }
    }

    public class SaveFailedEventArgs
    {
        public int SlotIndex { get; set; }
        public string ErrorMessage { get; set; }
    }

    public class LoadStartedEventArgs
    {
        public int SlotIndex { get; set; }
        public long Timestamp { get; set; }
    }

    public class LoadCompletedEventArgs
    {
        public int SlotIndex { get; set; }
        public string[] ModuleNames { get; set; }
        public int Version { get; set; }
        public long Timestamp { get; set; }
    }

    public class LoadFailedEventArgs
    {
        public int SlotIndex { get; set; }
        public string ErrorMessage { get; set; }
    }

    public class MigrationCompletedEventArgs
    {
        public int SlotIndex { get; set; }
        public int FromVersion { get; set; }
        public int ToVersion { get; set; }
    }

    public class SlotDeletedEventArgs
    {
        public int SlotIndex { get; set; }
    }
}