using AxiOmron.PcbCheck.Models;
using AxiOmron.PcbCheck.Services.Implementations;
using Xunit;

namespace AxiOmron.PcbCheck.Tests;

/// <summary>
/// 验证双扫码枪结果汇总规则。
/// </summary>
public sealed class DualScannerResultMergerTests
{
    /// <summary>
    /// 任一扫码枪成功时，应使用成功条码继续后续 SFTP 流程。
    /// </summary>
    [Fact]
    public void Merge_ShouldUseSecondBarcode_WhenOnlySecondScannerSucceeds()
    {
        var first = new ScanOperationResult
        {
            IsSuccess = false,
            DeviceConnected = true,
            ErrorMessage = "扫码枪1超时"
        };
        var second = new ScanOperationResult
        {
            IsSuccess = true,
            DeviceConnected = true,
            Barcode = "PCB-SECOND"
        };

        ScanOperationResult result = DualScannerResultMerger.Merge(first, second);

        Assert.True(result.IsSuccess);
        Assert.Equal("PCB-SECOND", result.Barcode);
        Assert.Contains("扫码枪2", result.RawMessage);
    }

    /// <summary>
    /// 第一把扫码枪返回 noRead、第二把扫码枪返回有效条码时，应舍弃 noRead 并使用第二把扫码枪结果。
    /// </summary>
    [Fact]
    public void Merge_ShouldUseSecondBarcode_WhenFirstScannerReturnsNoRead()
    {
        var first = new ScanOperationResult
        {
            IsSuccess = true,
            DeviceConnected = true,
            Barcode = "noRead",
            RawMessage = "noRead"
        };
        var second = new ScanOperationResult
        {
            IsSuccess = true,
            DeviceConnected = true,
            Barcode = "PCB-SECOND",
            RawMessage = "PCB-SECOND"
        };

        ScanOperationResult result = DualScannerResultMerger.Merge(first, second);

        Assert.True(result.IsSuccess);
        Assert.Equal("PCB-SECOND", result.Barcode);
        Assert.Contains("使用扫码枪2", result.RawMessage);
        Assert.DoesNotContain("使用扫码枪1", result.RawMessage);
    }

    /// <summary>
    /// 两把扫码枪都成功但内容不一致时，应优先使用扫码枪1条码并保留不一致说明。
    /// </summary>
    [Fact]
    public void Merge_ShouldPreferFirstBarcode_WhenBothScannersReturnDifferentBarcodes()
    {
        var first = new ScanOperationResult
        {
            IsSuccess = true,
            DeviceConnected = true,
            Barcode = "PCB-FIRST"
        };
        var second = new ScanOperationResult
        {
            IsSuccess = true,
            DeviceConnected = true,
            Barcode = "PCB-SECOND"
        };

        ScanOperationResult result = DualScannerResultMerger.Merge(first, second);

        Assert.True(result.IsSuccess);
        Assert.Equal("PCB-FIRST", result.Barcode);
        Assert.Contains("不一致", result.ErrorMessage);
        Assert.Contains("PCB-SECOND", result.RawMessage);
    }
}