Change “add to cart” button according the quantity of the products

[smarg]

Hello everyone,

I need your help in a issue I have. If anyone know about this issue, that would be great to discuss about.

 

I want the text “add to cart” of the add to cart button to change according the quantity of the products. I need to have the following options: 
Option 1: "add to cart" if the product is in my store and ready to send the same day(this is the normal that already have) 
Option 2: "Available in 2-3 days" if the product will be in my store the next day and the customer will receive it the day after. 
Option 3: "Presale" if I don't know the exact day that I will have the product in my store(5,7,10 or 20 days), but I will have it for sure until next month. 

Now, if you are wondering how can I distinct the quantity of the products in order to show the specific option for each product, then the following options could work for me: 
Option 1: If the product is "Presale", then the quantity can be minus two "-2". 
Option 2: If the product is "Available 2-3 days" then the quantity can be minus one "-1". 
Option 3: If the product is "add to cart" then the quantity can be between 1 and 10000(for example), this number could be anyone until 10000(this is the maximum that I can have in my store). 
Option 4: If the product is "out of stock", then the quantity should be zero "0". 

 Any ideas are very welcome!
Thank you

Edited September 27, 2017 by smarg (see edit history)