Eye TV AppleScript help

Question

Good morning all.
I recently purchased Eye TV to record digital Freeview television while I am out of the house (UK TV). I have been toying around with AppleScript to shut down my mac after a recording has exported to iTunes for either Apple TV or my iPhone.
I have a few issues and would really appreciate some help.
1 - I am using the following AppleScript to shut down my MacBook Pro following an automatic export. The script is designed to check if Eye TV is still recording and if so ignore the shut down process, if there is no recording then a warning message will appear and if the user doesn't stop the process, the MacBook Pro will shut down after a given time period.
Here is the script :
on ExportDone(recordingID)
set isCurrentlyRecording to checkeyetv_isrecording()
if isCurrentlyRecording is false then
with timeout of 300 seconds
tell me to activate
display dialog "Warning: Export to iTunes complete. Your system will automatically shut down in 2 minutes unless you click Stop" with icon 0 buttons {"Stop"} giving up after 120 default button "Stop"
set theresults to the result
if gave up of theresults is true then
tell application "System Events" to shut down
end if
end timeout
else
quit
end if
end ExportDone
to checkeyetv_isrecording()
delay 10
tell application "EyeTV"
if is_recording then
return true
else
return false
end if
end tell
end checkeyetv_isrecording
The first issue is this, if two programs are scheduled, (with both set to export) if the second program finishes before the first export is complete then the second will stay 'pending' until the first is finished. However the problem is, when the first program has exported this will start the AppleScript and the MacBook Pro will shut down unless manually stopped, causing the second export to crash.
Obviously the script is designed to check for a current recording, is there an additional line that could be added to check for a second export also ? Maybe a simple delay on the original export would give enough time for the second to start ? At the moment I am having no luck getting this to work.
2 - Over night I had a program scheduled to record and export followed by a shut down (no clash over a second scheduled program). When I woke in the morning the process had completed, however all three of my external HD's were active and awake, and had been all night. It seemed that these had not unmounted automatically on shutdown. Therefore I found the following script which will unmount my drives :
tell application "Finder"
set bootDisk to name of startup disk
set otherDisks to every disk whose (name is not bootDisk) and (name is not "Media")
repeat with myDisk in otherDisks
try
eject myDisk
end try
end repeat
end tell
This script ejects my drives and on shutdown they sleep until the Mac is started again. I would like to integrate this into the previous script, so the drives unmount just before the shut down is initiated. I'm just not sure where it should sit in the process, so if someone could help me with that, that would be great.
I'm very new to AppleScript and cannot confess to writing these myself, I have been lucky enough to find them online, I just need some help getting them finalised.
Any help would be greatly appreciated.
- Neil

Answer 1

This will do what you want. I've tried to use variable names that are explanatory, but if you have questions please ask.
Make sure you have a backup of your iTunes library and storage before proceeding. This does, after all, delete files (but they can still be found in the trash until you empty it).
Note that there is no error checking here so, for example, if no tracks qualify for deletion the script will throw an error.
<pre style="
font-family: Monaco, 'Courier New', Courier, monospace;
font-size: 10px;
margin: 0px;
padding: 5px;
border: 1px solid #000000;
width: 720px;
color: #000000;
background-color: #FFDDFF;
overflow: auto;">
tell application "iTunes"
set filesToDelete to location of (file tracks whose (video kind is TV show) and (unplayed is false))
delete (tracks whose (video kind is TV show) and (unplayed is false))
end tell
tell application "Finder"
repeat with theFile in filesToDelete
delete theFile
end repeat
end tell </pre>