using VendingMachine.Application.Services;

namespace VendingMachine.Tests;

/// <summary>
/// 内存版 Redis 存储，用于集成测试
/// </summary>
public class InMemoryRedisStore : IRedisStore
{
    private readonly Dictionary<string, (string Value, DateTime? ExpiresAt)> _store = new();

    public Task SetAsync(string key, string value, TimeSpan expiry)
    {
        _store[key] = (value, DateTime.UtcNow.Add(expiry));
        return Task.CompletedTask;
    }

    public Task<string?> GetAsync(string key)
    {
        if (_store.TryGetValue(key, out var entry))
        {
            // 检查是否过期
            if (entry.ExpiresAt.HasValue && DateTime.UtcNow > entry.ExpiresAt.Value)
            {
                _store.Remove(key);
                return Task.FromResult<string?>(null);
            }
            return Task.FromResult<string?>(entry.Value);
        }
        return Task.FromResult<string?>(null);
    }

    public Task<bool> DeleteAsync(string key)
    {
        return Task.FromResult(_store.Remove(key));
    }
}