using AssetManager.Data.Repositories;
using AssetManager.Infrastructure.Services;
using AssetManager.Models.DTOs;
using FluentAssertions;
using Microsoft.Extensions.Logging;
using Moq;
using Xunit;

namespace AssetManager.Tests.Services;

/// <summary>
/// MarketDataService 单元测试
/// </summary>
public class MarketDataServiceTests
{
    private readonly Mock<ITencentMarketService> _tencentMock;
    private readonly Mock<ITiingoMarketService> _tiingoMock;
    private readonly Mock<IYahooMarketService>  _yahooService;
    private readonly Mock<IOkxMarketService> _okxMock;
    private readonly Mock<IMarketDataRepository> _repoMock;
    private readonly Mock<ILogger<MarketDataService>> _loggerMock;
    private readonly MarketDataService _service;

    public MarketDataServiceTests()
    {
        _tencentMock = new Mock<ITencentMarketService>();
        _tiingoMock = new Mock<ITiingoMarketService>();
        _yahooService = new Mock<IYahooMarketService>();
        _okxMock = new Mock<IOkxMarketService>();
        _repoMock = new Mock<IMarketDataRepository>();
        _loggerMock = new Mock<ILogger<MarketDataService>>();

        _service = new MarketDataService(
            _loggerMock.Object,
            _tencentMock.Object,
            _yahooService.Object,
            _tiingoMock.Object,
            _okxMock.Object,
            _repoMock.Object
        );
    }

    #region GetPriceAsync Tests

    [Fact]
    public async Task GetPriceAsync_Crypto_ShouldCallOkxService()
    {
        // Arrange
        var symbol = "BTC-USDT";
        var expectedPrice = 50000m;

        _repoMock.Setup(x => x.GetPriceCacheAsync(symbol, "Crypto"))
            .ReturnsAsync((AssetManager.Data.MarketPriceCache?)null);

        _okxMock.Setup(x => x.GetCryptoPriceAsync(symbol))
            .ReturnsAsync(new MarketPriceResponse
            {
                Symbol = symbol,
                Price = expectedPrice,
                PreviousClose = 49000m,
                AssetType = "Crypto"
            });

        _repoMock.Setup(x => x.SavePriceCacheAsync(It.IsAny<AssetManager.Data.MarketPriceCache>()))
            .ReturnsAsync(true);

        // Act
        var result = await _service.GetPriceAsync(symbol, "Crypto");

        // Assert
        result.Should().NotBeNull();
        result.Price.Should().Be(expectedPrice);
        _okxMock.Verify(x => x.GetCryptoPriceAsync(symbol), Times.Once);
        _tencentMock.Verify(x => x.GetStockPriceAsync(It.IsAny<string>()), Times.Never);
    }

    [Fact]
    public async Task GetPriceAsync_Stock_ShouldCallTencentFirst()
    {
        // Arrange
        var symbol = "AAPL";
        var expectedPrice = 150m;

        _repoMock.Setup(x => x.GetPriceCacheAsync(symbol, "Stock"))
            .ReturnsAsync((AssetManager.Data.MarketPriceCache?)null);

        _tencentMock.Setup(x => x.GetStockPriceAsync(symbol))
            .ReturnsAsync(new MarketPriceResponse
            {
                Symbol = symbol,
                Price = expectedPrice,
                PreviousClose = 148m,
                AssetType = "Stock"
            });

        _repoMock.Setup(x => x.SavePriceCacheAsync(It.IsAny<AssetManager.Data.MarketPriceCache>()))
            .ReturnsAsync(true);

        // Act
        var result = await _service.GetPriceAsync(symbol, "Stock");

        // Assert
        result.Should().NotBeNull();
        result.Price.Should().Be(expectedPrice);
        _tencentMock.Verify(x => x.GetStockPriceAsync(symbol), Times.Once);
        _tiingoMock.Verify(x => x.GetStockPriceAsync(It.IsAny<string>()), Times.Never);
    }

    [Fact]
    public async Task GetPriceAsync_TencentFails_ShouldFallbackToTiingo()
    {
        // Arrange
        var symbol = "AAPL";

        _repoMock.Setup(x => x.GetPriceCacheAsync(symbol, "Stock"))
            .ReturnsAsync((AssetManager.Data.MarketPriceCache?)null);

        _tencentMock.Setup(x => x.GetStockPriceAsync(symbol))
            .ThrowsAsync(new Exception("Tencent API error"));

        _tiingoMock.Setup(x => x.GetStockPriceAsync(symbol))
            .ReturnsAsync(new MarketPriceResponse
            {
                Symbol = symbol,
                Price = 150m,
                PreviousClose = 148m,
                AssetType = "Stock"
            });

        _repoMock.Setup(x => x.SavePriceCacheAsync(It.IsAny<AssetManager.Data.MarketPriceCache>()))
            .ReturnsAsync(true);

        // Act
        var result = await _service.GetPriceAsync(symbol, "Stock");

        // Assert
        result.Should().NotBeNull();
        result.Price.Should().Be(150m);
        _tencentMock.Verify(x => x.GetStockPriceAsync(symbol), Times.Once);
        _tiingoMock.Verify(x => x.GetStockPriceAsync(symbol), Times.Once);
    }

    [Fact]
    public async Task GetPriceAsync_CacheHit_ShouldNotCallExternalApi()
    {
        // Arrange
        var symbol = "AAPL";
        var cachedPrice = new AssetManager.Data.MarketPriceCache
        {
            Symbol = symbol,
            AssetType = "Stock",
            Price = 150m,
            PreviousClose = 148m,
            ExpiredAt = DateTime.Now.AddMinutes(5)
        };

        _repoMock.Setup(x => x.GetPriceCacheAsync(symbol, "Stock"))
            .ReturnsAsync(cachedPrice);

        // Act
        var result = await _service.GetPriceAsync(symbol, "Stock");

        // Assert
        result.Should().NotBeNull();
        result.Price.Should().Be(150m);
        _tencentMock.Verify(x => x.GetStockPriceAsync(It.IsAny<string>()), Times.Never);
        _tiingoMock.Verify(x => x.GetStockPriceAsync(It.IsAny<string>()), Times.Never);
    }

    #endregion

    #region GetHistoricalDataAsync Tests

    [Fact]
    public async Task GetHistoricalDataAsync_Crypto_ShouldCallOkxService()
    {
        // Arrange
        var symbol = "BTC-USDT";
        var timeframe = "1d";
        var limit = 30;

        _repoMock.Setup(x => x.GetKlineCacheAsync(symbol, "Crypto", timeframe, limit))
            .ReturnsAsync(new List<AssetManager.Data.MarketKlineCache>());

        _okxMock.Setup(x => x.GetCryptoHistoricalDataAsync(symbol, timeframe, limit))
            .ReturnsAsync(new List<MarketDataResponse>
            {
                new() { Symbol = symbol, Close = 50000m, Timestamp = DateTime.Today }
            });

        _repoMock.Setup(x => x.SaveKlineCacheBatchAsync(It.IsAny<List<AssetManager.Data.MarketKlineCache>>()))
            .ReturnsAsync(true);

        // Act
        var result = await _service.GetHistoricalDataAsync(symbol, "Crypto", timeframe, limit);

        // Assert
        result.Should().NotBeEmpty();
        _okxMock.Verify(x => x.GetCryptoHistoricalDataAsync(symbol, timeframe, limit), Times.Once);
    }

    [Fact]
    public async Task GetHistoricalDataAsync_CacheSufficient_ShouldReturnCached()
    {
        // Arrange
        var symbol = "AAPL";
        var timeframe = "1d";
        var limit = 2;

        var cachedData = new List<AssetManager.Data.MarketKlineCache>
        {
            new() { Symbol = symbol, Close = 150m, Timestamp = DateTime.Today.AddDays(-1) },
            new() { Symbol = symbol, Close = 152m, Timestamp = DateTime.Today }
        };

        _repoMock.Setup(x => x.GetKlineCacheAsync(symbol, "Stock", timeframe, limit))
            .ReturnsAsync(cachedData);

        // Act
        var result = await _service.GetHistoricalDataAsync(symbol, "Stock", timeframe, limit);

        // Assert
        result.Should().HaveCount(2);
        _tencentMock.Verify(x => x.GetStockHistoricalDataAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<int>()), Times.Never);
    }

    #endregion
}