using Bunit;
using ZB.MOM.WW.ScadaBridge.CentralUI.Components.Deployment;
using ZB.MOM.WW.ScadaBridge.Commons.Types.Debugging;

namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Deployment;

/// <summary>
/// Flow Debugger outbound-calls plan (2026-09-06) Task 8: the step detail panel's Lifecycle tab,
/// outbound "Where this ran" fields and kind-specific Input tab labels. Follow-ups plan (2026-09-06)
/// Task 6: report deep links from a correlated outbound step and Retry/Discard on a parked one (D2/D5).
/// Step-logs plan (2026-09-09) Task 12: the Log tab — exception block, level-filtered lines and the
/// cross-step hint (design D8).
/// </summary>
public class FlowStepDetailTests : BunitContext
{
    private static readonly DateTimeOffset T0 = new(2026, 9, 6, 12, 0, 0, TimeSpan.Zero);

    public FlowStepDetailTests()
    {
        // The Log tab's Copy buttons call navigator.clipboard through IJSRuntime.
        JSInterop.Mode = JSRuntimeMode.Loose;
    }

    private const string ExceptionDetail =
        "System.InvalidOperationException: Recipe 42 rejected by Galaxy (code 7)\n" +
        "   at Submission#0.<<Initialize>>d__0.MoveNext() in ProcessRecipeDownload:line 41\n" +
        "   at ZB.MOM.WW.ScadaBridge.SiteRuntime.Scripts.ScriptRunLauncher.RunScriptAsync()";

    /// <summary>A site script-run step, optionally carrying folded log lines and a thrown exception's detail.</summary>
    private static FlowStep ScriptStep(
        FlowStepOutcome outcome,
        string title,
        Guid executionId,
        IReadOnlyList<FlowLogLine>? logs = null,
        string? errorDetail = null)
        => new(Guid.NewGuid(), executionId, null, FlowStepKind.ScriptRun, FlowLane.Site, title,
            "DelmiaSim01.DelmiaReceiver \u00b7 call", T0, 1731, outcome, "{\"RecipeId\":42}", "{\"ok\":false}",
            outcome == FlowStepOutcome.Failed ? "Recipe 42 rejected by Galaxy (code 7)" : null,
            "site-a", "node-a", "DelmiaSim01", title, null, null, null, errorDetail, logs);

    private static FlowLogLine Line(
        string level,
        string message,
        string source = "script",
        int seq = 0,
        string? exceptionMessage = null,
        string? exceptionDetail = null)
        => new(Guid.NewGuid(), null, T0.AddMilliseconds(seq), level, source, message,
            exceptionMessage, exceptionDetail, null, seq);

    private static FlowStep Step(FlowStepKind kind, FlowStepOutcome outcome, string target, IReadOnlyList<FlowLifecycleRow>? lifecycle = null, Guid? correlationId = null)
        => new(Guid.NewGuid(), Guid.NewGuid(), null, kind, FlowLane.External, target, "Delivered · cached", T0, 4100, outcome,
            "{\"id\":1}", "{\"ok\":true}", outcome == FlowStepOutcome.Failed ? "boom" : null, "site-a", "node-a", "M1", target, null, lifecycle, correlationId);

    private static IReadOnlyList<FlowLifecycleRow> CachedLifecycle(string terminalStatus) =>
    [
        new(Guid.NewGuid(), "CachedSubmit", "Submitted", T0, "node-a", null, null),
        new(Guid.NewGuid(), "ApiCallCached", "Attempted", T0.AddSeconds(3), "node-a", "503 Service Unavailable", 40),
        new(Guid.NewGuid(), "CachedResolve", terminalStatus, T0.AddMilliseconds(4100), "node-b", null, null),
    ];

    [Fact]
    public void LifecycleTab_RendersRowsInTimeOrder_AndDeliveredBy()
    {
        var step = Step(FlowStepKind.ApiCall, FlowStepOutcome.Ok, "Delmia.AckRecipe", CachedLifecycle("Delivered"));
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        cut.Find("[data-test=flow-step-tab-lifecycle]").Click();

        var rows = cut.FindAll("[data-test=flow-step-lifecycle] tbody tr");
        Assert.Equal(3, rows.Count);
        Assert.Contains("CachedSubmit", rows[0].TextContent);
        Assert.Contains("Submitted", rows[0].TextContent);
        Assert.Contains("503 Service Unavailable", rows[1].TextContent);
        Assert.Contains("CachedResolve", rows[2].TextContent);
        Assert.Contains("node-b", rows[2].TextContent);
        Assert.Contains("12:00:04.100", rows[2].TextContent);

        var where = cut.Find("[data-test=flow-step-where]").TextContent;
        Assert.Contains("System", where);
        Assert.Contains("Delmia.AckRecipe", where);
        Assert.Contains("Delivered by", where);
        Assert.Contains("node-b", where);
        Assert.Empty(cut.FindAll("[data-test=flow-step-parked-hint]"));
    }

    [Fact]
    public void NoLifecycle_HidesTheTab()
    {
        var step = Step(FlowStepKind.AttributeWrite, FlowStepOutcome.Ok, "A") with { Lane = FlowLane.Tags };
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));
        Assert.Empty(cut.FindAll("[data-test=flow-step-tab-lifecycle]"));
        Assert.Equal("Input", cut.Find("[data-test=flow-step-tab-input]").TextContent.Trim());
    }

    [Fact]
    public void ParkedNotify_ShowsHint_AndListLabel_AndParkedBadge()
    {
        var lifecycle = new List<FlowLifecycleRow>
        {
            new(Guid.NewGuid(), "NotifySend", "Submitted", T0, "node-a", null, null),
            new(Guid.NewGuid(), "NotifyDeliver", "Parked", T0.AddSeconds(9), "central-a", "retries exhausted", null),
        };
        var step = Step(FlowStepKind.Notify, FlowStepOutcome.Parked, "Planners", lifecycle);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        Assert.Equal("Parked", cut.Find("[data-test=flow-step-outcome]").TextContent.Trim());
        Assert.Contains("warning", cut.Find("[data-test=flow-step-outcome]").ClassName);
        Assert.Equal("Subject + body", cut.Find("[data-test=flow-step-tab-input]").TextContent.Trim());
        var where = cut.Find("[data-test=flow-step-where]").TextContent;
        Assert.Contains("List", where);
        Assert.Contains("central-a", where);

        cut.Find("[data-test=flow-step-tab-lifecycle]").Click();
        Assert.Contains("Site Calls / Notification", cut.Find("[data-test=flow-step-parked-hint]").TextContent);
    }

    [Theory]
    [InlineData(FlowStepKind.ApiCall, "Request", "System")]
    [InlineData(FlowStepKind.DbCall, "SQL + parameters", "Connection")]
    [InlineData(FlowStepKind.Notify, "Subject + body", "List")]
    public void OutboundKinds_LabelInputTabAndTarget(FlowStepKind kind, string inputLabel, string targetLabel)
    {
        var step = Step(kind, FlowStepOutcome.Pending, "T");
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));
        Assert.Equal(inputLabel, cut.Find("[data-test=flow-step-tab-input]").TextContent.Trim());
        Assert.Contains(targetLabel, cut.Find("[data-test=flow-step-where]").TextContent);
        Assert.Equal("Pending", cut.Find("[data-test=flow-step-outcome]").TextContent.Trim());
    }
    [Fact]
    public void OutboundStepWithCorrelation_LinksToTheReportPage()
    {
        var c = Guid.NewGuid();

        var api = Step(FlowStepKind.ApiCall, FlowStepOutcome.Ok, "Delmia.AckRecipe", CachedLifecycle("Delivered"), c);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, api));
        var link = cut.Find("a[data-test=open-report]");
        Assert.Equal($"/site-calls/report?correlationId={c:D}", link.GetAttribute("href"));
        Assert.Equal("Open in Site Calls", link.TextContent.Trim());

        var notify = Step(FlowStepKind.Notify, FlowStepOutcome.Ok, "Planners", CachedLifecycle("Delivered"), c);
        cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, notify));
        link = cut.Find("a[data-test=open-report]");
        Assert.Equal($"/notifications/report?correlationId={c:N}", link.GetAttribute("href"));
        Assert.Equal("Open in Notification report", link.TextContent.Trim());

        var sync = Step(FlowStepKind.ApiCall, FlowStepOutcome.Ok, "Delmia.AckRecipe");
        cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, sync));
        Assert.Empty(cut.FindAll("[data-test=open-report]"));
    }

    [Fact]
    public void ParkedStep_WithCallbacks_ShowsRetryAndDiscard()
    {
        var c = Guid.NewGuid();
        var step = Step(FlowStepKind.ApiCall, FlowStepOutcome.Parked, "Delmia.AckRecipe", CachedLifecycle("Parked"), c);
        FlowStep? retried = null;
        FlowStep? discarded = null;

        var cut = Render<FlowStepDetail>(p => p
            .Add(x => x.Step, step)
            .Add(x => x.OnRetry, s => retried = s)
            .Add(x => x.OnDiscard, s => discarded = s));

        var retry = cut.Find("button[data-test=flow-step-retry]");
        var discard = cut.Find("button[data-test=flow-step-discard]");
        Assert.Equal("Retry", retry.TextContent.Trim());
        Assert.Equal("Discard", discard.TextContent.Trim());
        Assert.Contains("btn-outline-primary", retry.ClassName);
        Assert.Contains("btn-outline-danger", discard.ClassName);
        Assert.False(retry.HasAttribute("disabled"));
        Assert.False(discard.HasAttribute("disabled"));

        retry.Click();
        Assert.Same(step, retried);
        Assert.Null(discarded);

        discard.Click();
        Assert.Same(step, discarded);

        cut.Render(p => p
            .Add(x => x.Step, step)
            .Add(x => x.OnRetry, s => retried = s)
            .Add(x => x.OnDiscard, s => discarded = s)
            .Add(x => x.ActionInProgress, true));
        Assert.True(cut.Find("button[data-test=flow-step-retry]").HasAttribute("disabled"));
        Assert.True(cut.Find("button[data-test=flow-step-discard]").HasAttribute("disabled"));
    }

    [Fact]
    public void ParkedStep_WithoutCallbacks_ShowsOnlyTheHintLink()
    {
        var c = Guid.NewGuid();
        var step = Step(FlowStepKind.Notify, FlowStepOutcome.Parked, "Planners", CachedLifecycle("Parked"), c);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        Assert.Empty(cut.FindAll("[data-test=flow-step-retry]"));
        Assert.Empty(cut.FindAll("[data-test=flow-step-discard]"));

        cut.Find("[data-test=flow-step-tab-lifecycle]").Click();
        var hint = cut.Find("[data-test=flow-step-parked-hint]");
        Assert.Contains("Parked", hint.TextContent);
        var hintLink = hint.QuerySelector("a");
        Assert.NotNull(hintLink);
        Assert.Equal($"/notifications/report?correlationId={c:N}", hintLink!.GetAttribute("href"));
    }

    [Fact]
    public void OkStep_NeverShowsActions()
    {
        var step = Step(FlowStepKind.ApiCall, FlowStepOutcome.Ok, "Delmia.AckRecipe", CachedLifecycle("Delivered"), Guid.NewGuid());
        var cut = Render<FlowStepDetail>(p => p
            .Add(x => x.Step, step)
            .Add(x => x.OnRetry, _ => { })
            .Add(x => x.OnDiscard, _ => { }));

        Assert.Empty(cut.FindAll("[data-test=flow-step-retry]"));
        Assert.Empty(cut.FindAll("[data-test=flow-step-discard]"));
    }

    [Fact]
    public void NoLinesAndNoDetail_HidesTheLogTab()
    {
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", Guid.NewGuid())));
        Assert.Empty(cut.FindAll("[data-test=flow-step-tab-log]"));
    }

    [Fact]
    public void LogTab_CountsItsLines()
    {
        var step = ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", Guid.NewGuid(),
        [
            Line("info", "Recipe 42 requested", seq: 1),
            Line("debug", "Writing header attributes", seq: 2),
            Line("warn", "ResultCode 7 is outside the accepted set", seq: 3),
        ]);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        Assert.Equal("Log (3)", cut.Find("[data-test=flow-step-tab-log]").TextContent.Trim());
    }

    [Fact]
    public void FailedStepWithDetail_OpensOnLog_AndRendersTheExceptionBlock()
    {
        var step = ScriptStep(FlowStepOutcome.Failed, "ProcessRecipeDownload", Guid.NewGuid(),
            [Line("error", "Rejecting recipe 42 (code 7)", seq: 1)], ExceptionDetail);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        Assert.Contains("active", cut.Find("[data-test=flow-step-tab-log]").ClassName);
        var exc = cut.Find("[data-test=flow-step-exception]");
        Assert.Equal("System.InvalidOperationException", exc.QuerySelector(".fsd-exc-type")!.TextContent.Trim());
        Assert.Equal("Recipe 42 rejected by Galaxy (code 7)", exc.QuerySelector(".fsd-exc-message")!.TextContent.Trim());
        Assert.Contains("ScriptRunLauncher.RunScriptAsync", exc.QuerySelector("pre")!.TextContent);
        Assert.NotNull(cut.Find("[data-test=flow-step-exception-copy]"));
    }

    [Fact]
    public void WrappedException_TheBlockHeaderNamesTheINNERMOSTType_InFull()
    {
        // Final review M1: the panel used to parse the OUTERMOST exception of a " ---> " chain
        // while the graph node's subtitle showed the innermost — the two now share
        // ExceptionHeader, which always follows the chain to its end. The panel still shows the
        // type with its namespace (only the node badge shortens it), and the raw detail is
        // untouched, so the wrapper is still visible in the <pre>.
        const string wrapped =
            "System.AggregateException: One or more errors occurred. (Recipe 42 rejected by Galaxy (code 7)) " +
            "---> ZB.Scada.RecipeRejectedException: Recipe 42 rejected by Galaxy (code 7)\n" +
            "   at Submission#0.<<Initialize>>d__0.MoveNext()";
        var step = ScriptStep(FlowStepOutcome.Failed, "ProcessRecipeDownload", Guid.NewGuid(), [], wrapped);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        var exc = cut.Find("[data-test=flow-step-exception]");
        Assert.Equal("ZB.Scada.RecipeRejectedException", exc.QuerySelector(".fsd-exc-type")!.TextContent.Trim());
        Assert.Equal("Recipe 42 rejected by Galaxy (code 7)", exc.QuerySelector(".fsd-exc-message")!.TextContent.Trim());
        Assert.Contains("System.AggregateException", exc.QuerySelector("pre")!.TextContent);
    }

    [Fact]
    public void OkStepWithLines_OpensOnInput()
    {
        var step = ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", Guid.NewGuid(), [Line("info", "hello", seq: 1)]);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        Assert.Contains("active", cut.Find("[data-test=flow-step-tab-input]").ClassName);
        Assert.DoesNotContain("active", cut.Find("[data-test=flow-step-tab-log]").ClassName);
        Assert.Empty(cut.FindAll("[data-test=flow-step-exception]"));
    }

    [Fact]
    public void WarnFilter_LeavesOnlyWarnAndErrorRows()
    {
        var step = ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", Guid.NewGuid(),
        [
            Line("info", "Recipe 42 requested", seq: 1),
            Line("debug", "Writing header attributes", seq: 2),
            Line("warn", "ResultCode 7 is outside the accepted set", seq: 3),
            Line("error", "Rejecting recipe 42", seq: 4),
        ]);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));
        cut.Find("[data-test=flow-step-tab-log]").Click();

        Assert.Equal(4, cut.FindAll("[data-test=flow-step-log-lines] tr[data-level]").Count);

        cut.Find("[data-test=flow-step-log-filter-warn]").Click();
        var rows = cut.FindAll("[data-test=flow-step-log-lines] tr[data-level]");
        Assert.Equal(2, rows.Count);
        Assert.Equal("warn", rows[0].GetAttribute("data-level"));
        Assert.Equal("error", rows[1].GetAttribute("data-level"));

        cut.Find("[data-test=flow-step-log-filter-all]").Click();
        Assert.Equal(4, cut.FindAll("[data-test=flow-step-log-lines] tr[data-level]").Count);
    }

    [Fact]
    public void Hint_NamesAnotherStepOfTheSameExecution_AndSelectsIt()
    {
        var exec = Guid.NewGuid();
        var selected = ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", exec, [Line("info", "a", seq: 1)]);
        var other = ScriptStep(FlowStepOutcome.Ok, "Write RecipeId, RecipeName", exec, [Line("warn", "acked Uncertain", seq: 2)]);
        var elsewhere = ScriptStep(FlowStepOutcome.Ok, "Another execution", Guid.NewGuid(), [Line("info", "c", seq: 3)]);
        var graph = new FlowGraph([selected, other, elsewhere], [], false, false);
        FlowStep? picked = null;

        var cut = Render<FlowStepDetail>(p => p
            .Add(x => x.Step, selected)
            .Add(x => x.Graph, graph)
            .Add(x => x.OnSelectStep, s => picked = s));
        cut.Find("[data-test=flow-step-tab-log]").Click();

        var hint = cut.Find("[data-test=flow-step-log-hint]");
        Assert.Contains("1 more on", hint.TextContent);
        Assert.Contains("Write RecipeId, RecipeName", hint.TextContent);
        Assert.DoesNotContain("Another execution", hint.TextContent);

        hint.QuerySelector("button")!.Click();
        Assert.Same(other, picked);
    }

    [Fact]
    public void Hint_WithoutASelectCallback_IsPlainText()
    {
        var exec = Guid.NewGuid();
        var selected = ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", exec, [Line("info", "a", seq: 1)]);
        var other = ScriptStep(FlowStepOutcome.Ok, "Write RecipeId, RecipeName", exec, [Line("warn", "b", seq: 2)]);
        var graph = new FlowGraph([selected, other], [], false, false);

        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, selected).Add(x => x.Graph, graph));
        cut.Find("[data-test=flow-step-tab-log]").Click();

        var hint = cut.Find("[data-test=flow-step-log-hint]");
        Assert.Contains("Write RecipeId, RecipeName", hint.TextContent);
        Assert.Null(hint.QuerySelector("button"));
    }

    [Fact]
    public void OutputAlert_SeeExceptionLink_SwitchesToTheLogTab()
    {
        var step = ScriptStep(FlowStepOutcome.Failed, "ProcessRecipeDownload", Guid.NewGuid(),
            [Line("error", "Rejecting recipe 42", seq: 1)], ExceptionDetail);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));

        cut.Find("[data-test=flow-step-tab-output]").Click();
        Assert.Contains("Recipe 42 rejected", cut.Find("[data-test=flow-step-error]").TextContent);

        cut.Find("[data-test=flow-step-error-see-log]").Click();
        Assert.Contains("active", cut.Find("[data-test=flow-step-tab-log]").ClassName);
        Assert.NotNull(cut.Find("[data-test=flow-step-exception]"));
    }

    [Fact]
    public void RuntimeSourcedLine_ShowsItsSource_AndAnAttachedException()
    {
        var step = ScriptStep(FlowStepOutcome.Ok, "Write RecipeId", Guid.NewGuid(),
        [
            Line("warn", "acked with quality Uncertain", source: "runtime", seq: 1,
                exceptionMessage: "Tag write was not confirmed", exceptionDetail: "System.TimeoutException: Tag write was not confirmed\n   at Dcl"),
        ]);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, step));
        cut.Find("[data-test=flow-step-tab-log]").Click();

        var row = cut.Find("[data-test=flow-step-log-lines] tr[data-level=warn]");
        Assert.Contains("runtime", row.TextContent);
        Assert.Contains("Tag write was not confirmed", row.QuerySelector(".fsd-line-exc")!.TextContent);
        Assert.Contains("System.TimeoutException", row.QuerySelector("details pre")!.TextContent);
    }

    [Fact]
    public void SwitchingSteps_KeepsAStillValidTab()
    {
        var a = ScriptStep(FlowStepOutcome.Ok, "ProcessRecipeDownload", Guid.NewGuid());
        var b = ScriptStep(FlowStepOutcome.Ok, "AckRecipe", Guid.NewGuid());

        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, a));
        cut.Find("[data-test=flow-step-tab-timing]").Click();
        Assert.Contains("active", cut.Find("[data-test=flow-step-tab-timing]").ClassName);

        cut.Render(p => p.Add(x => x.Step, b));

        Assert.Contains("active", cut.Find("[data-test=flow-step-tab-timing]").ClassName);
        Assert.DoesNotContain("active", cut.Find("[data-test=flow-step-tab-input]").ClassName);
    }

    [Fact]
    public void RefreshingTheSameStep_KeepsTheTabAndTheLevelFilter()
    {
        // The page re-reads outcomes after a Live run and hands back a NEW FlowStep instance carrying
        // the same EventId plus whatever rows have landed since — that must not disturb the panel.
        var eventId = Guid.NewGuid();
        var exec = Guid.NewGuid();
        FlowStep Refreshed(IReadOnlyList<FlowLogLine> logs)
            => new(eventId, exec, null, FlowStepKind.ScriptRun, FlowLane.Site, "ProcessRecipeDownload",
                "sub", T0, 1731, FlowStepOutcome.Failed, "{}", "{}", "Recipe 42 rejected by Galaxy (code 7)",
                "site-a", "node-a", "DelmiaSim01", "ProcessRecipeDownload", null, null, null, ExceptionDetail, logs);

        var first = Refreshed([Line("info", "Recipe 42 requested", seq: 1), Line("warn", "ResultCode 7", seq: 2)]);
        var cut = Render<FlowStepDetail>(p => p.Add(x => x.Step, first));

        Assert.Equal("Log (2)", cut.Find("[data-test=flow-step-tab-log]").TextContent.Trim());
        cut.Find("[data-test=flow-step-log-filter-warn]").Click();
        Assert.Single(cut.FindAll("[data-test=flow-step-log-lines] tr[data-level]"));
        cut.Find("[data-test=flow-step-tab-timing]").Click();

        cut.Render(p => p.Add(x => x.Step, Refreshed(
        [
            Line("info", "Recipe 42 requested", seq: 1),
            Line("warn", "ResultCode 7", seq: 2),
            Line("error", "Rejecting recipe 42", seq: 3),
        ])));

        Assert.Contains("active", cut.Find("[data-test=flow-step-tab-timing]").ClassName);
        Assert.Equal("Log (3)", cut.Find("[data-test=flow-step-tab-log]").TextContent.Trim());

        cut.Find("[data-test=flow-step-tab-log]").Click();
        Assert.Contains("btn-secondary", cut.Find("[data-test=flow-step-log-filter-warn]").ClassName);
        var rows = cut.FindAll("[data-test=flow-step-log-lines] tr[data-level]");
        Assert.Equal(2, rows.Count);
        Assert.Equal("warn", rows[0].GetAttribute("data-level"));
        Assert.Equal("error", rows[1].GetAttribute("data-level"));
    }
}