I'm new to shopify app development and trying to build a shopify app with node and followed this post here. Everything worked as explained, but I have things to get clarified, may be very basic things.
My question is where to specify the link that's directed when shop owner select my app from the installed apps list of the shop?
As I understood from the post above App URL
given in the App info section of the app is used for installation process and from there it's redirected to one of the Whitelisted redirection URL(s)
as defined in the app for HMAC
validation and exchanging a permanent access token to access the shops' admin API later.
Now Once my test-app is installed to a shop and when the app is selected from the installed apps list, the request again goes to the App URL
and get redirected to callback URL
generating a new access token. If this is how it is supposed to be, why it's called a permanent access token and need to be stored? If this not how it should be how to specify a url to direct when the app is selected from the installed app list?
In Short
where to define the url to direct when a shop admin select the app from is installed apps section of the shop like shown below.