Search within a playlist

[Jidu]

Plan

Free/Premium

Country

Device

(iPhone 8, Samsung Galaxy 9, Macbook Pro late 2016)

Operating System

(iOS 10, Android Oreo, Windows 10,etc.)

My Question or Issue

I have a script for adding songs to a playlist but the problem is that songs are duplicated if it ready exists. Is there anyway to search the song uri within the given track id and get a boolean value? 

[rosunad]

I'm very surprised that WebApi has not this option. I'm forced to loop through all the tracks to filter