add: implement shortlink

config/config.go

@@ -33,6 +33,12 @@ type Config struct {
 		EnableDatabaseAuth bool   `mapstructure:"enable_database_auth"`
 	} `mapstructure:"auth"`
 
+	Shortlink struct {
+		BaseURL            string `mapstructure:"base_url"`             // Base URL for shortlinks (e.g., https://example.com)
+		DefaultExpiryHours int    `mapstructure:"default_expiry_hours"` // Default expiry time in hours
+		MaxAttempts        int    `mapstructure:"max_attempts"`         // Maximum failed attempts allowed
+	} `mapstructure:"shortlink"`
+
 	Database struct {
 		Host     string `mapstructure:"host"`
 		Port     int    `mapstructure:"port"`