using Microsoft.AspNetCore.Mvc;
using Omika.Diagnostics.Models;
using Omika.Diagnostics.Tests.Fakes;
using Omika.Diagnostics.Web.Pages;

namespace Omika.Diagnostics.Tests;

/// <summary>
/// T24-A — handlers serveur du prompt IA (OnGetPromptAsync) : vérifie que le clic renvoie
/// bien le texte du prompt (text/plain), et 404 pour un id inconnu. Ne teste pas la
/// génération (déjà couverte par DiagnosticPromptBuilderTests) mais le contrat HTTP.
/// </summary>
public class DiagnosticPromptHandlerTests
{
    private static DiagnosticEventRecord Ev(long id, string eventCode = "ERR") => new()
    {
        Id = id,
        EventId = Guid.NewGuid(),
        EventCode = eventCode,
        TimestampUtc = new DateTimeOffset(2025, 1, 1, 12, 0, 0, TimeSpan.Zero),
        Level = "Error",
        Priority = "P2",
        ExceptionType = "System.InvalidOperationException",
        Source = DiagnosticSources.Api,
        IngestedAtUtc = DateTimeOffset.UtcNow
    };

    [Fact]
    public async Task DiagnosticsDetail_Prompt_ReturnsTextPrompt()
    {
        var repo = new FakeDiagnosticEventRepository();
        await repo.InsertBatchAsync(new[] { Ev(42) });
        var model = new DiagnosticsDetailModel(repo);

        IActionResult result = await model.OnGetPromptAsync(42);

        ContentResult content = Assert.IsType<ContentResult>(result);
        Assert.StartsWith("Analyse cette erreur Omika", content.Content, StringComparison.Ordinal);
        Assert.Contains("ERR", content.Content, StringComparison.Ordinal);
        Assert.Equal("text/plain; charset=utf-8", content.ContentType);
    }

    [Fact]
    public async Task DiagnosticsDetail_Prompt_UnknownId_ReturnsNotFound()
    {
        var repo = new FakeDiagnosticEventRepository();
        var model = new DiagnosticsDetailModel(repo);

        IActionResult result = await model.OnGetPromptAsync(999);

        Assert.IsType<NotFoundResult>(result);
    }
}