package widgetpreview

import "testing"

func validWidget() map[string]any {
	return map[string]any{
		"id":            "00000000-0000-0000-0000-000000000001",
		"type":          "timeseries",
		"title":         "CPU",
		"data":          map[string]any{"sourceType": "semantic-metric", "metric": "host.cpu.utilization", "range": "1h", "aggregation": "avg", "limit": float64(100)},
		"visualization": map[string]any{"decimals": float64(1), "min": float64(0), "max": float64(100), "thresholds": []any{}},
		"behavior":      map[string]any{"liveIntervalSeconds": float64(5)},
	}
}

func TestValidateRejectsUnboundedOrRawConfiguration(t *testing.T) {
	widget := validWidget()
	widget["data"].(map[string]any)["metric"] = "promql:up"
	if fields := Validate(widget); fields["data.metric"] == "" {
		t.Fatal("expected raw query rejection")
	}
	widget["data"].(map[string]any)["limit"] = float64(1001)
	if fields := Validate(widget); fields["data.limit"] == "" {
		t.Fatal("expected limit rejection")
	}
}

func TestValidateRejectsInvertedThresholdRange(t *testing.T) {
	widget := validWidget()
	widget["visualization"].(map[string]any)["min"] = float64(90)
	widget["visualization"].(map[string]any)["max"] = float64(10)
	if fields := Validate(widget); fields["visualization.max"] == "" {
		t.Fatal("expected min/max rejection")
	}
}

func TestPreviewReturnsExplicitStatesAndLimits(t *testing.T) {
	widget := validWidget()
	widget["data"].(map[string]any)["limit"] = float64(1000)
	for _, state := range []string{"loading", "empty", "error", "stale"} {
		result, err := Preview(widget, state)
		if err != nil {
			t.Fatalf("state %s: %v", state, err)
		}
		if result.State != state || result.Limits.AppliedRows != 1000 || result.Limits.MaxPoints != MaxPoints {
			t.Fatalf("unexpected %s result: %+v", state, result)
		}
	}
}