package location

import (
	"testing"

	"github.com/AFASystems/presence/internal/pkg/common/utils"
	"github.com/AFASystems/presence/internal/pkg/model"
)

// Test location algorithm scoring formula: seenW + (rssiW * (1.0 - (rssi / -100.0)))
func TestLocationScoringFormula(t *testing.T) {
	seenW := 1.5
	rssiW := 0.75

	tests := []struct {
		rssi    int64
		wantMin float64
		wantMax float64
	}{
		{-50, 1.85, 1.9},   // 1.5 + 0.75*0.5 = 1.875
		{-100, 1.45, 1.55}, // 1.5 + 0.75*0 = 1.5
		{-80, 1.6, 1.7},    // 1.5 + 0.75*0.2 = 1.65
	}
	for _, tt := range tests {
		score := seenW + (rssiW * (1.0 - (float64(tt.rssi) / -100.0)))
		if score < tt.wantMin || score > tt.wantMax {
			t.Errorf("RSSI %d: score %f outside expected [%f, %f]", tt.rssi, score, tt.wantMin, tt.wantMax)
		}
	}
}

func TestCalculateDistance_ForLocation(t *testing.T) {
	adv := model.BeaconAdvertisement{
		RSSI:    -65,
		TXPower: "C5",
	}
	d := utils.CalculateDistance(adv)
	if d < 0 {
		t.Errorf("Distance should be non-negative, got %f", d)
	}
}