package openweather

import "testing"

func TestBuildObservationTextDescriptionAndPressurePrecedence(t *testing.T) {
	seaLevel := 1018.0

	parsed := owmResponse{}
	parsed.Dt = 1710000000
	parsed.Main.Temp = 20.0
	parsed.Main.Humidity = 45.0
	parsed.Main.Pressure = 1000.0
	parsed.Main.SeaLevel = &seaLevel
	parsed.Wind.Speed = 3.0
	parsed.Weather = []owmWeather{
		{ID: 801, Main: "Clouds", Description: "few clouds", Icon: "02d"},
	}

	obs, _, err := buildObservation(parsed)
	if err != nil {
		t.Fatalf("buildObservation() error = %v", err)
	}

	if obs.TextDescription != "few clouds" {
		t.Fatalf("TextDescription = %q, want %q", obs.TextDescription, "few clouds")
	}

	if obs.BarometricPressurePa == nil {
		t.Fatalf("BarometricPressurePa = nil, want non-nil")
	}
	if got, want := *obs.BarometricPressurePa, 101800.0; got != want {
		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
	}
}

func TestBuildObservationPressureFallbackToSurface(t *testing.T) {
	parsed := owmResponse{}
	parsed.Dt = 1710000000
	parsed.Main.Temp = 20.0
	parsed.Main.Humidity = 45.0
	parsed.Main.Pressure = 1001.0
	parsed.Wind.Speed = 3.0
	parsed.Weather = []owmWeather{
		{ID: 800, Description: "clear sky", Icon: "01d"},
	}

	obs, _, err := buildObservation(parsed)
	if err != nil {
		t.Fatalf("buildObservation() error = %v", err)
	}

	if obs.BarometricPressurePa == nil {
		t.Fatalf("BarometricPressurePa = nil, want non-nil")
	}
	if got, want := *obs.BarometricPressurePa, 100100.0; got != want {
		t.Fatalf("BarometricPressurePa = %v, want %v", got, want)
	}
}