using ClawdDotNet.Core.Engine;
using ClawdDotNet.Core.Staging;
using ClawdDotNet.Core.Tasks;
using ClawdDotNet.Web.Contracts;
using ClawdDotNet.Web.Endpoints;
using Shouldly;

namespace ClawdDotNet.Web.Tests;

/// <summary>
/// Findings from reviewing the web UI in test operation (#572): #591 (field names) and
/// #536 (direction of the A2A answers).
/// </summary>
public sealed class TestOperationWebTests
{
    // ─── #591 event stream and transfer types ───

    [Fact]
    public void Log_lines_in_the_event_stream_come_in_camelCase()
    {
        var evt = EventEndpoints.Format("log", new LogLineDto("Startup", "INF", "ClawdDotNet startet"));

        evt.ShouldStartWith("event: log\n");
        evt.ShouldContain("\"module\":\"Startup\"");
        evt.ShouldContain("\"level\":\"INF\"");
        evt.ShouldContain("\"text\":\"ClawdDotNet startet\"");
        evt.ShouldNotContain("\"Text\"", Case.Sensitive);
    }

    [Fact]
    public void Approval_carries_its_time()
    {
        var created = new DateTime(2026, 9, 14, 10, 18, 53, DateTimeKind.Utc);

        var dto = new StagedCall
        {
            Id = 1, AgentId = "hausmeister", Tool = "FileRW", Action = "delete",
            ArgumentsJson = "{\"path\":\"betrieb/probe-loeschung.txt\"}", CreatedAt = created
        }.ToDto();

        dto.CreatedAt.ShouldBe(created);
        dto.Tool.ShouldBe("FileRW");
        dto.Action.ShouldBe("delete");
    }

    [Fact]
    public void Task_carries_its_schedule()
    {
        var dto = new TaskItem
        {
            Id = "t-a66932", Title = "Wetter Berlin stuendlich", Assignee = "@new:wetterdienst",
            When = new TaskWhen { Kind = TaskWhenKind.Cron, Value = "5 * * * *", TimeZone = "Europe/Berlin" }
        }.ToDto();

        dto.When.ShouldNotBeNull();
        dto.When.Kind.ShouldBe("cron");
        dto.When.Value.ShouldBe("5 * * * *");
        dto.When.TimeZone.ShouldBe("Europe/Berlin");
        dto.Assignee.ShouldBe("@new:wetterdienst");
    }

    [Fact]
    public void One_off_task_has_no_schedule()
        => new TaskItem { Id = "t-1", Title = "Einrichtung" }.ToDto().When.ShouldBeNull();

    // ─── #536 sender and recipient ───

    private static ChatEntry Request(string fromName, string fromId, string text, int minute)
        => new("user", $"[Nachricht von Agent \"{fromName}\" ({fromId})]\n\n{text}",
               new DateTime(2026, 9, 14, 12, minute, 0), ChatSource.AgentComm);

    private static ChatEntry Answer(string text, int minute)
        => new("assistant", text, new DateTime(2026, 9, 14, 12, minute, 30), ChatSource.AgentComm);

    [Fact]
    public void Answer_goes_from_the_responder_to_the_asker()
    {
        var list = AgentCommunicationBuilder.Build(
        [
            ("redaktion", "Redaktion", (IEnumerable<ChatEntry>)
            [
                Request("Hausmeister", "hausmeister", "Testnachricht", 48),
                Answer("Empfang bestaetigt", 48)
            ])
        ]);

        list.Count.ShouldBe(2);

        var request = list[0];
        request.SourceAgentId.ShouldBe("hausmeister");
        request.TargetAgentId.ShouldBe("redaktion");
        request.Content.ShouldBe("Testnachricht");

        var answer = list[1];
        answer.SourceAgentId.ShouldBe("redaktion");
        answer.TargetAgentId.ShouldBe("hausmeister", "vorher stand hier der Antwortende selbst");
        answer.TargetAgentName.ShouldBe("Hausmeister");
    }

    [Fact]
    public void Only_agent_communication_is_recorded()
    {
        var list = AgentCommunicationBuilder.Build(
        [
            ("hausmeister", "Hausmeister", (IEnumerable<ChatEntry>)
            [
                new ChatEntry("user", "Hey, wie gehts?", DateTime.Now, ChatSource.WebUi),
                new ChatEntry("assistant", "Moin!", DateTime.Now, ChatSource.WebUi)
            ])
        ]);

        list.ShouldBeEmpty();
    }

    [Theory]
    [InlineData("[Nachricht von Agent \"Hausmeister\" ohne Klammer]\n\nText")]
    [InlineData("[Nachricht von Agent \"Bo\"b\" (bob)]\n\nText")]
    [InlineData("[Nachricht von Agent \"")]
    public void Reading_the_sender_does_not_throw_on_unexpected_form(string content)
        => Should.NotThrow(() => AgentCommunicationBuilder.ReadSender(content));

    [Fact]
    public void Reading_the_sender_returns_id_name_and_text()
    {
        var (id, name, text) = AgentCommunicationBuilder.ReadSender(
            "[Nachricht von Agent \"Hausmeister\" (hausmeister)]\n\nHallo Redaktion!");

        id.ShouldBe("hausmeister");
        name.ShouldBe("Hausmeister");
        text.ShouldBe("Hallo Redaktion!");
    }
}