using Microsoft.AspNetCore.Mvc;

namespace SatelliteProvider.Api.DTOs;

// AZ-811: query-string record for GET /api/satellite/tiles/latlon.
// Bound via `[AsParameters]` so each property maps to one query parameter.
// `[FromQuery(Name = "...")]` pins the wire name explicitly — case-sensitive
// match against `?lat=&lon=&zoom=`, matching the OSM convention shared with
// the rest of the satellite-provider API (`{z, x, y}` for inventory,
// `{lat, lon}` for region and route DTOs).
//
// **Why nullable types**: minimal-API parameter binding throws
// BadHttpRequestException for missing-required non-nullable query params
// BEFORE endpoint filters run. That short-circuit produces a plain
// ProblemDetails via GlobalExceptionHandler — no `errors{}` envelope, no
// per-field key. Per AZ-811 ACs 1 & 4 every missing/unknown param must
// surface as `errors.<paramName>` in ValidationProblemDetails. Nullable
// types let binding always succeed, so:
//   1. RejectUnknownQueryParamsEndpointFilter handles unknown keys
//      (e.g. legacy `?Latitude=`, hostile `?debug=1`).
//   2. GetTileByLatLonQueryValidator handles `null` (missing) plus range.
// Validator guarantees non-null by the time the handler dereferences.
public sealed record GetTileByLatLonQuery(
    [property: FromQuery(Name = "lat")] double? Lat,
    [property: FromQuery(Name = "lon")] double? Lon,
    [property: FromQuery(Name = "zoom")] int? Zoom);