fix(cache): remove duplicate function for combining into key

src/cache/actions_currencies.go

@@ -5,6 +5,7 @@ import (
 
 	"github.com/hearchco/agent/src/exchange/currency"
 	"github.com/hearchco/agent/src/exchange/engines"
+	"github.com/hearchco/agent/src/utils/morestrings"
 )
 
 func (db DB) SetCurrencies(base currency.Currency, engs []engines.Name, currencies currency.Currencies, ttl ...time.Duration) error {
@@ -31,5 +32,5 @@ func combineBaseWithExchangeEnginesNames(base currency.Currency, engs []engines.
 	}
 
 	baseWithEnginesNamesStrings := append(enginesNamesStrings, base.String())
-	return combineIntoKey(baseWithEnginesNamesStrings...)
+	return morestrings.JoinNonEmpty("", "_", baseWithEnginesNamesStrings...)
 }

src/cache/actions_results.go

@@ -7,6 +7,7 @@ import (
 	"github.com/hearchco/agent/src/search/category"
 	"github.com/hearchco/agent/src/search/engines/options"
 	"github.com/hearchco/agent/src/search/result"
+	"github.com/hearchco/agent/src/utils/morestrings"
 )
 
 func (db DB) SetResults(q string, cat category.Name, opts options.Options, results []result.Result, ttl ...time.Duration) error {
@@ -44,7 +45,7 @@ func (db DB) GetResultsTTL(q string, cat category.Name, opts options.Options) (t
 }
 
 func combineQueryWithOptions(q string, cat category.Name, opts options.Options) string {
-	return combineIntoKey(
+	return morestrings.JoinNonEmpty("", "_",
 		q, cat.String(),
 		strconv.Itoa(opts.Pages.Start), strconv.Itoa(opts.Pages.Max),
 		opts.Locale.String(), strconv.FormatBool(opts.SafeSearch),