added empty days in /team view

Backend/helper/system.go

@@ -2,11 +2,13 @@ package helper
 
 import (
 	"os"
+	"time"
 )
 
 // Returns env with default fallback value.
 //
 // Params:
+//
 //	key - enviroment var name
 //	fallback - default value
 func GetEnv(key, fallback string) string {
@@ -15,3 +17,37 @@ func GetEnv(key, fallback string) string {
 	}
 	return fallback
 }
+
+type CacheItem struct {
+	value      any
+	expiration time.Time
+}
+
+type Cache struct {
+	data  map[string]CacheItem
+	ttl   time.Duration
+	fetch func(key string) (any, error)
+}
+
+func NewCache(ttl time.Duration, fetchFunc func(key string) (any, error)) *Cache {
+	return &Cache{
+		data:  make(map[string]CacheItem),
+		ttl:   ttl,
+		fetch: fetchFunc,
+	}
+}
+
+func (c *Cache) Get(key string) (any, error) {
+	if item, found := c.data[key]; found {
+		if time.Now().Before(item.expiration) {
+			return item.value, nil
+		}
+	}
+
+	value, err := c.fetch(key)
+	if err != nil {
+		return nil, err
+	}
+	c.data[key] = CacheItem{value: value, expiration: time.Now().Add(c.ttl)}
+	return value, nil
+}