Conte-nos o que está acontecendo:
Your “MAIN_MENU” function should have the correct “if” condition added
I can’t figure out what’s wrong here.
Seu código até o momento
#!/bin/bash
PSQL=“psql -X --username=freecodecamp --dbname=bikes --tuples-only -c”
echo -e “\n~~~~~ Bike Rental Shop ~~~~~\n”
MAIN_MENU() {
if [[ $1 ]]
then
echo -e “\n$1”
fi
echo “How may I help you?”
echo -e “\n1. Rent a bike\n2. Return a bike\n3. Exit”
read MAIN_MENU_SELECTION
case $MAIN_MENU_SELECTION in
1) RENT_MENU ;;
2) RETURN_MENU ;;
3) EXIT ;;
*) MAIN_MENU “Please enter a valid option.” ;;
esac
}
RENT_MENU() {
get available bikes
AVAILABLE_BIKES=$($PSQL “SELECT bike_id, type, size FROM bikes WHERE available = true ORDER BY bike_id”)
if no bikes available
if [[ -z $AVAILABLE_BIKES ]]
then
# send to main menu
MAIN_MENU “Sorry, we don’t have any bikes available right now.”
else
# display available bikes
echo -e “\nHere are the bikes we have available:”
echo “$AVAILABLE_BIKES” | while read BIKE_ID BAR TYPE BAR SIZE
do
echo “$BIKE_ID) $SIZE" $TYPE Bike”
done
# ask for bike to rent
echo -e "\nWhich one would you like to rent?"
read BIKE_ID_TO_RENT
# if input is not a number
if [[ ! $BIKE_ID_TO_RENT =~ ^[0-9]+$ ]]
then
# send to main menu
MAIN_MENU "That is not a valid bike number."
else
# get bike availability
BIKE_AVAILABILITY=$($PSQL "SELECT available FROM bikes WHERE bike_id = $BIKE_ID_TO_RENT AND available = true")
echo $BIKE_AVAILABILITY
# if not available
if [[ -z $BIKE_AVAILABILITY ]]
then
# send to main menu
fi
fi
}
RETURN_MENU() {
echo “Return Menu”
}
EXIT() {
echo -e “\nThank you for stopping in.\n”
}
MAIN_MENU
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Informações do desafio:
Aprenda Bash e SQL criando uma loja de aluguel de bicicletas - Criar uma loja de aluguel de bicicletas