using Admin.NET.Plugin.AiDOP.Service.S8;
using Xunit;

namespace Admin.NET.Test.S8;

/// <summary>
/// N-2 孤立审批实例告警的纯逻辑回归。
/// 仅覆盖 payload→flowInstanceId 解析路径；SqlSugar 查询路径走 run-once 端到端验证。
/// </summary>
public class S8ActiveFlowWatchServiceTests
{
    [Fact]
    public void TryExtractFlowInstanceId_Returns_Id_For_Valid_Payload()
    {
        var payload = """{"type":"S8_ORPHAN_FLOW_INSTANCE","flowInstanceId":796332066504773,"bizType":"EXCEPTION_ESCALATION"}""";
        var id = S8ActiveFlowWatchService.TryExtractFlowInstanceId(payload);
        Assert.Equal(796332066504773L, id);
    }

    [Fact]
    public void TryExtractFlowInstanceId_Returns_Null_When_Field_Missing()
    {
        var payload = """{"type":"S8_ACTIVE_FLOW_STUCK","exceptionId":42}""";
        Assert.Null(S8ActiveFlowWatchService.TryExtractFlowInstanceId(payload));
    }

    [Fact]
    public void TryExtractFlowInstanceId_Returns_Null_When_Field_Wrong_Type()
    {
        var payload = """{"flowInstanceId":"not-a-number"}""";
        Assert.Null(S8ActiveFlowWatchService.TryExtractFlowInstanceId(payload));
    }

    [Fact]
    public void TryExtractFlowInstanceId_Returns_Null_For_Invalid_Json()
    {
        Assert.Null(S8ActiveFlowWatchService.TryExtractFlowInstanceId("{not json"));
    }

    [Fact]
    public void TryExtractFlowInstanceId_Returns_Null_For_Null_Or_Empty()
    {
        Assert.Null(S8ActiveFlowWatchService.TryExtractFlowInstanceId(null));
        Assert.Null(S8ActiveFlowWatchService.TryExtractFlowInstanceId(""));
        Assert.Null(S8ActiveFlowWatchService.TryExtractFlowInstanceId("   "));
    }
}