add documentation lines

internal/handlers/server/balancecheck.go

@@ -9,6 +9,9 @@ import (
 	"git.grassecon.net/urdt/ussd/internal/models"
 )
 
+// CheckBalance retrieves the balance for a given public key from the custodial balance API endpoint.
+// Parameters:
+//   - publicKey: The public key associated with the account whose balance needs to be checked.
 func CheckBalance(publicKey string) (string, error) {
 
 	resp, err := http.Get(config.BalanceURL + publicKey)

internal/handlers/server/createaccount.go

@@ -9,7 +9,12 @@ import (
 	"git.grassecon.net/urdt/ussd/internal/models"
 )
 
-
+//CreateAccount creates a new account in the custodial system.
+// Returns:
+//   - *models.AccountResponse: A pointer to an AccountResponse struct containing the details of the created account.
+//     If there is an error during the request or processing, this will be nil.
+//   - error: An error if any occurred during the HTTP request, reading the response, or unmarshalling the JSON data.
+//     If no error occurs, this will be nil.
 func CreateAccount() (*models.AccountResponse, error) {
 	resp, err := http.Post(config.CreateAccountURL, "application/json", nil)
 	if err != nil {

internal/utils/age.go

@@ -2,7 +2,8 @@ package utils
 
 import "time"
 
-
+// CalculateAge calculates the age based on a given birthdate and the current date in the format dd/mm/yy
+// It adjusts for cases where the current date is before the birthday in the current year.
 func CalculateAge(birthdate, today time.Time) int {
 	today = today.In(birthdate.Location())
 	ty, tm, td := today.Date()