Script to insert text and image in table

Hi, I am asking for your help to create a script that reads two txt files, distinta.txt contains a code for each line, maintenance.txt contains a code, a letter, a whole number, divided by a comma.
I would like to find the common codes between the two files, read the letter and the number from the file maintenance.txt and insert them in a table in indesign, as attached, so that the code is inserted in the first column, and based on the letter insert an image in the cell corresponding to the number (equals the hours of maintenance)