using DramaLing.Api.Data;
using Microsoft.EntityFrameworkCore;
using Microsoft.Extensions.Caching.Memory;
using Microsoft.Extensions.Logging;
using Moq;

namespace DramaLing.Api.Tests;

/// <summary>
/// 測試基底類別，提供共用的測試設定和工具
/// </summary>
public abstract class TestBase : IDisposable
{
    protected DramaLingDbContext DbContext { get; private set; }
    protected IMemoryCache MemoryCache { get; private set; }
    protected Mock<ILogger<T>> CreateMockLogger<T>() => new Mock<ILogger<T>>();

    protected TestBase()
    {
        SetupDatabase();
        SetupCache();
    }

    /// <summary>
    /// 設定 In-Memory 資料庫
    /// </summary>
    private void SetupDatabase()
    {
        var options = new DbContextOptionsBuilder<DramaLingDbContext>()
            .UseInMemoryDatabase(databaseName: $"TestDb_{Guid.NewGuid()}")
            .Options;

        DbContext = new DramaLingDbContext(options);
        DbContext.Database.EnsureCreated();
    }

    /// <summary>
    /// 設定記憶體快取
    /// </summary>
    private void SetupCache()
    {
        MemoryCache = new MemoryCache(new MemoryCacheOptions
        {
            SizeLimit = 100 // 限制測試時的快取大小
        });
    }

    /// <summary>
    /// 清理測試資料
    /// </summary>
    protected void ClearDatabase()
    {
        DbContext.OptionsVocabularies.RemoveRange(DbContext.OptionsVocabularies);
        DbContext.Flashcards.RemoveRange(DbContext.Flashcards);
        DbContext.Users.RemoveRange(DbContext.Users);
        DbContext.SaveChanges();
    }

    /// <summary>
    /// 清理快取
    /// </summary>
    protected void ClearCache()
    {
        if (MemoryCache is MemoryCache mc)
        {
            mc.Compact(1.0); // 清空所有快取項目
        }
    }

    public virtual void Dispose()
    {
        DbContext?.Dispose();
        MemoryCache?.Dispose();
        GC.SuppressFinalize(this);
    }
}