AppleScript Get data from log - applescript

Question

I need my AppleScript to find some data from a log (text) and set as a value
e.g Serial ID : XXXXXX , devices : XXXXX
Also the app is generating a lot of log files, so I need to take the data from the most recent logs.
Is that even possible
set listOfShows to {}
set Shows to paragraphs of (read POSIX file "Users/username/Library/Logs/app/Applicationc1454545.log.log")
repeat with nextLine in Shows
if length of nextLine is greater than 0 then
copy nextLine to the end of listOfShows
end if
end repeat
choose from list listOfShows/
Maybe I can get the file with this :
set sourceFolder to POSIX file "/Users/Users/Library/Logs/"
tell application "Finder"
sort (get files of folder sourceFolder) by creation date
-- This raises an error if the folder doesn't contain any files
set theFile to (item 1 of result) as alias
end tell

Answer 1

Actually when you sort by creation date in Finder the most recent file is the last rather than the first file.
The error occurs if there are no files and therefore no item 1.
Try this:
path to library folder from user domain is the relative path to the library folder of the current user.
set logFolder to (path to library folder from user domain as text) & "Logs:"
tell application "Finder" to set sortedFiles to sort (get files of folder logFolder whose name contains "Applicationc1454545") by creation date
if sortedFiles is not {} then
set mostRecentLogFile to last item of sortedFiles as alias
set listOfShows to {}
set Shows to paragraphs of (read mostRecentLogFile as «class utf8»)
repeat with nextLine in Shows
if length of nextLine is greater than 0 then
copy nextLine to the end of listOfShows
end if
end repeat
set chosen to choose from list listOfShows
if chose is false then return
set chosen to item 1 of chosen
end if