package controlplane

import (
	"context"
	"testing"
)

func TestGetTenantPreferencesWithoutTenantUsesConfiguredDefault(t *testing.T) {
	defaults := BillingPreferenceDefaults{LowBalanceThresholdMicros: 12_500_000, SpendAnomalyMultiplier: 7, SpendAnomalyMinMicros: 8_500_000}
	result, err := (&Store{}).GetTenantPreferences(context.Background(), "", defaults)
	if err != nil {
		t.Fatal(err)
	}
	if !result.LowBalanceEnabled || result.LowBalanceThresholdMicros != 12_500_000 || !result.SpendAnomalyEnabled ||
		result.SpendAnomalyMultiplier != 7 || result.SpendAnomalyMinMicros != 8_500_000 {
		t.Fatalf("unexpected defaults: %+v", result)
	}
}

func TestPreferenceValidationRejectsUnsafeValuesBeforeDatabaseAccess(t *testing.T) {
	store := &Store{}
	if _, err := store.SetDeveloperPreferences(context.Background(), SetDeveloperPreferencesInput{
		TenantID: "tenant", DefaultModel: "same", FallbackModel: "same",
	}, BillingPreferenceDefaults{}); err == nil {
		t.Fatal("expected identical default and fallback models to fail")
	}
	threshold := maxAlertThresholdMicros + 1
	if _, err := store.SetBillingPreferences(context.Background(), SetBillingPreferencesInput{
		TenantID: "tenant", LowBalanceThresholdMicros: &threshold,
	}, BillingPreferenceDefaults{}); err == nil {
		t.Fatal("expected excessive low balance threshold to fail")
	}
	multiplier := int64(1)
	if _, err := store.SetBillingPreferences(context.Background(), SetBillingPreferencesInput{
		TenantID: "tenant", SpendAnomalyMultiplier: &multiplier,
	}, BillingPreferenceDefaults{}); err == nil {
		t.Fatal("expected invalid spend anomaly multiplier to fail")
	}
}