using Events.EF.Data.Postgres;
using Events.EF.Models;
using Microsoft.EntityFrameworkCore;

namespace GraphQLServer.SetupGraphQL;

public class Queries
{
  [UsePaging]
  [UseProjection]
  [UseFiltering]
  [UseSorting]
  public IQueryable<Country> GetCountries([Service] EventsContext ctx) => ctx.Countries.AsNoTracking();

  [UsePaging]
  [UseProjection]
  [UseFiltering]
  [UseSorting]
  public IQueryable<Sport> GetSports([Service] EventsContext ctx) => ctx.Sports.AsNoTracking();

  [UsePaging]
  [UseProjection]
  [UseFiltering]
  [UseSorting]
  public IQueryable<Person> GetPeople([Service] EventsContext ctx) => ctx.People.AsNoTracking();

  public async Task<PeoplePage> GetPeoplePage(
    [Service] EventsContext ctx,
    int pageNumber = 1,
    int pageSize = 10)
  {
    pageNumber = Math.Max(1, pageNumber);
    pageSize = Math.Clamp(pageSize, 1, 100);

    var baseQuery = ctx.People
      .AsNoTracking()
      .OrderBy(p => p.Id);

    var totalCount = await baseQuery.CountAsync();

    var items = await baseQuery
      .Skip((pageNumber - 1) * pageSize)
      .Take(pageSize)
      .ToListAsync();

    return new PeoplePage
    {
      TotalCount = totalCount,
      PageNumber = pageNumber,
      PageSize = pageSize,
      Items = items
    };
  }

  [UsePaging]
  [UseProjection]
  [UseFiltering]
  [UseSorting]
  public IQueryable<Event> GetEvents([Service] EventsContext ctx) => ctx.Events.AsNoTracking();

  [UsePaging]
  [UseProjection]
  [UseFiltering]
  [UseSorting]
  public IQueryable<Event> GetEventsForDate([Service] EventsContext ctx, DateOnly date) =>
    ctx.Events.AsNoTracking()
      .Where(e => e.EventDate == date);

  [UsePaging]
  [UseProjection]
  [UseFiltering]
  [UseSorting]
  public IQueryable<Registration> GetRegistrations([Service] EventsContext ctx) => ctx.Registrations.AsNoTracking();
}