ersatztv/ErsatzTV/Controllers/Api/LogsController.cs

using ErsatzTV.Application.Logs;
using ErsatzTV.Core.Api.Logs;
using MediatR;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;

namespace ErsatzTV.Controllers.Api;

[ApiController]
public class LogsController(IMediator mediator) : ControllerBase
{
    private const int MaxPageSize = 100;

    [HttpGet("/api/logs", Name = "GetLogs")]
    [Tags("Logs")]
    [EndpointSummary("Get recent log entries")]
    [EndpointGroupName("general")]
    [ProducesResponseType(typeof(PagedLogEntriesResponseModel), StatusCodes.Status200OK)]
    public async Task<PagedLogEntriesResponseModel> GetLogs(
        [FromQuery] int pageNum = 0,
        [FromQuery] int pageSize = 100,
        [FromQuery] string filter = "",
        CancellationToken cancellationToken = default)
    {
        int clampedPageNum = Math.Max(0, pageNum);
        int clampedPageSize = Math.Clamp(pageSize, 1, MaxPageSize);

        PagedLogEntriesViewModel result = await mediator.Send(
            new GetRecentLogEntries(clampedPageNum, clampedPageSize, filter ?? string.Empty),
            cancellationToken);

        return new PagedLogEntriesResponseModel(
            result.TotalCount,
            result.Page.Map(ProjectToResponseModel).ToList());
    }

    private static LogEntryResponseModel ProjectToResponseModel(LogEntryViewModel viewModel) =>
        new(viewModel.Timestamp, viewModel.Level.ToString(), viewModel.Message);
}