using AutoMapper;
using FastEndpoints;
using MetaCourse.Api.Data;
using MetaCourse.Api.DTOs.Courses;
using Microsoft.EntityFrameworkCore;

namespace MetaCourse.Api.Endpoints.Courses;

public class GetCoursesRequest
{
    public string? Search { get; set; }
}

public class GetCoursesEndpoint(AppDbContext db, AutoMapper.IMapper mapper) : Endpoint<GetCoursesRequest, List<GetCourseDto>>
{
    public override void Configure()
    {
        Get("api/courses");
        AllowAnonymous();
        Summary(s =>
        {
            s.Summary = "Liste les cours publiés";
            s.Description = "Retourne tous les cours avec le statut Publié, avec recherche optionnelle.";
        });
    }

    public override async Task HandleAsync(GetCoursesRequest req, CancellationToken ct)
    {
        var query = db.Courses
            .AsNoTracking()
            .Include(c => c.Creator)
            .Include(c => c.Topics)
            .Where(c => c.Status == Entities.CourseStatus.Published);

        if (!string.IsNullOrWhiteSpace(req.Search))
        {
            var search = req.Search.ToLower();
            query = query.Where(c =>
                c.Title.ToLower().Contains(search) ||
                c.Description.ToLower().Contains(search) ||
                c.Creator.Name.ToLower().Contains(search));
        }

        var courses = await query.OrderByDescending(c => c.CreatedAt).ToListAsync(ct);
        await SendOkAsync(mapper.Map<List<GetCourseDto>>(courses), ct);
    }
}