68 lines
2.2 KiB
C#
68 lines
2.2 KiB
C#
using LMS.Repository.DB;
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using Microsoft.EntityFrameworkCore;
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namespace LMS.DAO.OptionDAO
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{
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public class OptionGlobalDAO(ApplicationDbContext dbContext)
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{
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private readonly ApplicationDbContext _dbContext = dbContext;
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/// <summary>
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/// 根据配置键查找并返回指定类型的配置值
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/// </summary>
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/// <typeparam name="T">返回值类型</typeparam>
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/// <param name="optionKey">配置键</param>
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/// <returns>配置值，如果不存在或转换失败则返回默认值</returns>
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public async Task<T?> FindAndReturnOption<T>(string optionKey)
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{
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// 参数验证
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if (string.IsNullOrWhiteSpace(optionKey))
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{
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return default(T);
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}
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var options = await _dbContext.Options
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.Where(x => x.Key == optionKey)
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.FirstOrDefaultAsync();
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if (options == null) return default;
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// 直接返回转换结果，GetValueObject内部应该处理null情况
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return options.GetValueObject<T>() ?? default;
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}
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/// <summary>
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/// 检查配置是否存在
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/// </summary>
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/// <param name="optionKey">配置键</param>
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/// <returns>是否存在</returns>
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public async Task<bool> OptionExists(string optionKey)
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{
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if (string.IsNullOrWhiteSpace(optionKey))
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{
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return false;
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}
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return await _dbContext.Options
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.AnyAsync(x => x.Key == optionKey);
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}
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/// <summary>
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/// 获取多个配置
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/// </summary>
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/// <param name="optionKeys">配置键列表</param>
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/// <returns>配置字典</returns>
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public async Task<Dictionary<string, Options>> GetMultipleOptions(params string[] optionKeys)
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{
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if (optionKeys == null || optionKeys.Length == 0)
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{
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return new Dictionary<string, Options>();
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}
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var options = await _dbContext.Options
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.Where(x => optionKeys.Contains(x.Key))
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.ToListAsync();
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return options.ToDictionary(x => x.Key, x => x);
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}
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}
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}
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