require_relative "test_helper"
require "maptool/overpass_pois"

# No real network calls — to_geojson is pure (canned Overpass response ->
# GeoJSON), and that's the part worth protecting from regressions. fetch()
# itself is a thin Net::HTTP.post_form + JSON.parse wrapper, same as
# LiveTrackClient's own fetch_html, not independently tested for the same
# reason that one isn't.
class OverpassPoisTest < Minitest::Test
  def test_to_geojson_converts_matching_node_elements
    response = {
      "elements" => [
        { "type" => "node", "lat" => 48.1, "lon" => 17.2, "tags" => { "amenity" => "drinking_water" } },
        { "type" => "node", "lat" => 48.3, "lon" => 17.4, "tags" => { "amenity" => "toilets", "name" => "Rest area" } },
      ],
    }

    geojson = Maptool::OverpassPois.to_geojson(response)

    assert_equal "FeatureCollection", geojson["type"]
    assert_equal 2, geojson["features"].size
    water = geojson["features"].find { |f| f["properties"]["category"] == "Drinking water" }
    assert_equal [17.2, 48.1], water["geometry"]["coordinates"]
    assert_equal "Drinking water", water["properties"]["name"], "falls back to the category when the node has no name tag"
  end

  def test_to_geojson_uses_the_node_name_when_present
    response = { "elements" => [{ "type" => "node", "lat" => 48.3, "lon" => 17.4, "tags" => { "amenity" => "toilets", "name" => "Rest area" } }] }

    feature = Maptool::OverpassPois.to_geojson(response)["features"].first

    assert_equal "Rest area", feature["properties"]["name"]
  end

  def test_to_geojson_skips_ways_and_relations
    response = { "elements" => [{ "type" => "way", "tags" => { "amenity" => "drinking_water" } }] }

    assert_empty Maptool::OverpassPois.to_geojson(response)["features"]
  end

  def test_to_geojson_skips_nodes_matching_no_known_category
    response = { "elements" => [{ "type" => "node", "lat" => 48.1, "lon" => 17.2, "tags" => { "amenity" => "restaurant" } }] }

    assert_empty Maptool::OverpassPois.to_geojson(response)["features"]
  end

  def test_lpg_matches_either_fuel_stations_with_the_lpg_tag_or_gas_bottle_shops
    response = {
      "elements" => [
        { "type" => "node", "lat" => 1, "lon" => 1, "tags" => { "amenity" => "fuel", "fuel:lpg" => "yes" } },
        { "type" => "node", "lat" => 2, "lon" => 2, "tags" => { "shop" => "gas" } },
        { "type" => "node", "lat" => 3, "lon" => 3, "tags" => { "amenity" => "fuel" } }, # no lpg tag - not a match
      ],
    }

    categories = Maptool::OverpassPois.to_geojson(response)["features"].map { |f| f["properties"]["category"] }

    assert_equal ["LPG refill", "LPG refill"], categories
  end

  def test_build_query_includes_the_bbox_and_every_category_filter
    query = Maptool::OverpassPois.build_query([48.0, 17.0, 49.0, 18.0])

    assert_includes query, "48.0,17.0,49.0,18.0"
    assert_includes query, %(["amenity"="drinking_water"])
    assert_includes query, %(["natural"="spring"])
  end
end