app is now using historical exchange rates for transactions

internal/handler/api.go

@@ -6,6 +6,7 @@ import (
 	"net/http"
 	"portfolio-tracker/internal/model"
 	"portfolio-tracker/internal/util"
+	"time"
 )
 
 func JsonEndpoint(w http.ResponseWriter, r *http.Request) {
@@ -110,7 +111,26 @@ func ClearCurrencyCacheHandler(w http.ResponseWriter, r *http.Request) {
 
 	response := map[string]string{
 		"status":  "success",
-		"message": "Currency cache cleared successfully",
+		"message": "Currency cache (including historical rates) cleared successfully",
+	}
+
+	w.Header().Set("Content-Type", "application/json")
+	json.NewEncoder(w).Encode(response)
+}
+
+// CleanExpiredCacheHandler removes expired cache entries
+func CleanExpiredCacheHandler(w http.ResponseWriter, r *http.Request) {
+	if r.Method != http.MethodPost {
+		http.Error(w, "Nur POST erlaubt", http.StatusMethodNotAllowed)
+		return
+	}
+
+	removedCount := util.CleanExpiredCache()
+
+	response := map[string]interface{}{
+		"status":        "success",
+		"message":       "Expired cache entries cleaned",
+		"removed_count": removedCount,
 	}
 
 	w.Header().Set("Content-Type", "application/json")
@@ -124,12 +144,34 @@ func CurrencyCacheInfoHandler(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 
-	cacheInfo := util.GetCacheInfo()
+	detailedCacheInfo := util.GetDetailedCacheInfo()
+
+	// Separate historical and current rates
+	historicalRates := make(map[string]interface{})
+	currentRates := make(map[string]interface{})
+
+	for key, cached := range detailedCacheInfo {
+		rateInfo := map[string]interface{}{
+			"rate":      cached.Rate,
+			"timestamp": cached.Timestamp,
+			"date":      cached.Date,
+			"age_hours": time.Since(cached.Timestamp).Hours(),
+		}
+
+		if cached.Date == cached.Timestamp.Format("2006-01-02") {
+			currentRates[key] = rateInfo
+		} else {
+			historicalRates[key] = rateInfo
+		}
+	}
 
 	response := map[string]interface{}{
-		"status":     "success",
-		"cache_size": len(cacheInfo),
-		"entries":    cacheInfo,
+		"status":           "success",
+		"total_entries":    len(detailedCacheInfo),
+		"historical_rates": historicalRates,
+		"current_rates":    currentRates,
+		"historical_count": len(historicalRates),
+		"current_count":    len(currentRates),
 	}
 
 	w.Header().Set("Content-Type", "application/json")