using LMS.Common.Enums;
using Newtonsoft.Json;
using System.ComponentModel.DataAnnotations;

namespace LMS.Repository.DB;

public class Options
{
    [Key]
    [Required]
    public required string Key { get; set; } = string.Empty;

    /// <summary>
    /// Value of the option，这个值是一个json字符串
    /// </summary>
    public string? Value { get; set; } = string.Empty;

    [Required]
    public OptionTypeEnum Type { get; set; } = OptionTypeEnum.String;

    [Required]
    public OptionCategory Category { get; set; } = OptionCategory.System;

    [Required]
    public List<long> RoleIds { get; set; } = [];

    public DateTime CreatedTime { get; set; }

    // 写一个字段，映射Value，判断是不是json字符串，是的话就解析成对象
    public T? GetValueObject<T>()
    {
        if (string.IsNullOrEmpty(Value))
        {
            return default;
        }

        if (Type == OptionTypeEnum.JSON)
        {
            return JsonConvert.DeserializeObject<T>(Value ?? "{}");
        }

        if (Type == OptionTypeEnum.Number)
        {
            if (double.TryParse(Value, out double result))
            {
                return (T)Convert.ChangeType(result, typeof(T));
            }
            return default;
        }

        return (T)Convert.ChangeType(Value, typeof(T));
    }

    // 写一个方法，设置Value的值
    public void SetValueObject<T>(T value)
    {
        if (value == null)
        {
            Value = string.Empty;
            return;
        }

        if (Type == OptionTypeEnum.JSON)
        {
            Value = JsonConvert.SerializeObject(value);
        }
        else
        {
            Value = value.ToString();
        }
    }
}