Applescript a "Retry" button - macos

Question

I'm coding an application with a password field:
set password1 to text returned of (display dialog "To continue please enter your special passcode below." buttons {"Cancel", "Continue"} default button 2 default answer "" cancel button 1 with hidden answer)
if the password1 is "passwordhere" then
display dialog "You have entered the password right!
The right password was: passwordhere
The entered password was: " & password1 buttons {"Cancel", "Continue"} default button 2 cancel button 1
else
if the password1 is "" then
set password1 to "Empty Passwordfield"
end if
display dialog "You have entered the password wrong!
The right password was: ********
The entered password was: " & password1 buttons {"Cancel", "Try Again"} default button 2 cancel button 1
end if
end
Now my question is: How do I make a "Try Again" button so it will return to the first display dialog? Is this possible? If not please say that in an answer.
Also a question: Is this also possible for just 2 normal dialogs? So that in the second dialog is a "Back" button? And if you press that button you'll return to the first dialog?
Thanks for reading,
Jort

Answer 1

Consider placing the password prompt/dialog in a applescript handler:
on get_password()
-- get password and return true if good, false if bad
end get_password
This way you can 're-call' the handler from anywhere else in your script as needed.
Here is an example of your code that repeats the prompt for password as your question asked:
local goodpassword, password1, tryagain, proceed
set goodpassword to false -- initial set
set tryagain to true -- initial set
on getpassword()
return text returned of (display dialog "To continue please enter your special passcode below." buttons {"Cancel", "Continue"} default button 2 default answer "" cancel button 1 with hidden answer)
end getpassword
repeat while tryagain = true
set proceed to true
set password1 to getpassword() -- This calls the prompt for the first time
if the password1 is "passwordhere" then
set goodpassword to true
set tryagain to false
try
display dialog "You have entered the password right!
The right password was: passwordhere
The entered password was: " & password1 buttons {"Cancel", "Continue"} default button 2 cancel button 1
on error number -128
set proceed to false
end try
else
set goodpassword to false
if the password1 is "" then
set password1 to "Empty Passwordfield"
end if
try
display dialog "You have entered the password wrong!
The right password was: ********
The entered password was: " & password1 buttons {"Cancel", "Try Again"} default button 2 cancel button 1
on error number -128
set tryagain to false
end try
end if
end repeat