Wanted: indexing script to enable editing of Topics

Question

I started a post in the InDesign forums:
http://forums.adobe.com/message/2120412#2120412
to see if I could overcome a limitation of Indexing, but it appears that the limitation cannot be overcome within InDesign, and judging from a private response by Peter Kahrel, an easy solution may not be possible with scripting either:
The other approach you suggest (selecting a topic and having a script act on that) isn't possible because a script can't see which topic you select in the interface.
There may be other ways to implement what I want, so I thought I would try here. This is what I would like to be able to do:
1. I go to Index > Reference and click on the topic I want to modify. It turns blue. Assume I click on Burrows, Bert.
According to Peter, a script cannot access a selection, so this method of selecting a topic is not possible. So, in that case, the script asks me for the Topic I want to modify. It would do so like this in a four-pass loop, or a single dialog box if that is easier to script (my responses are shown bold):
Enter the Topic you want changed (Level 1): Burrows, Bert
Enter the Topic you want changed (Level 2):
Enter the Topic you want changed (Level 3):
Enter the Topic you want changed (Level 4):
2.  The script then asks me to enter the new Topic levels, again as a four-pass loop (my responses are shown bold):
New Level 1: Burrows
New Level 2: Bert
New Level 3:
New Level 4:
3. The script grabs all the page references from Burrows, Bert and dumps them into the new topic as shown in (2). If the topic I originally selected has sub topics, all those sub topics must remain as sub topics. e.g. if Burrows, Bert has this structure:
Level 1: Burrows, Bert
Level 2: girlfriends
Level 3:
Level 4:
After I run the script, the result should be:
Level 1: Burrows
Level 2: Bert
Level 3: girlfriends
Level 4:
Of course, when the index is in final form, I could quite easily manually edit it by inserting paragraph returns (and applying new indented paragraph formats) to achieve the same result as the script -- but I'd have to be certain the index was in final form.
Any comments most appreciated.
Why do I want to do this?
To illustrate why I want to do the above, I have uploaded the first 2 pages of the draft index (no where near complete as yet) to:
http://www.mediafire.com/download.php?vikoiymzmmn
In there you'll see that the two Akiloff girls have already been sub-topiced (I did that as a test to see what it looks like), and I would like to do the same to Burrows, Byrne and others. As they are now, I could do it without a script because there are very few entries, but when the index is finished, I expect all topics to have more entries than shown.
On the other hand, I do not want the Burns entries (and certain others) sub-topiced. To do so would complicate the look of the index (I think).

Answer 1

I remade a little Peter's script, that he posted in InDesign forum, so now it asks for Yes/No confirmation .
#target indesign
if (parseInt (app.version) > 4 && app.documents.length > 0 && app.documents[0].indexes.length > 0) {
    myIndex = app.documents[0].indexes[0];
    myTopics = myIndex.topics.everyItem().getElements();
    for (i = myTopics.length-1; i > -1; i--) {
        temp = myTopics[i].name.match (/^([A-Z][-a-z]+), ([A-Z][-a-z]+)$/);
        if (temp != null) {
            for (j = myTopics[i].pageReferences.length-1; j > -1; j--) {
                if (confirm(temp[1] + ", " + temp[2])) {
                    new_topic = myIndex.topics.add (temp[1]).topics.add (temp[2]);
                    new_topic.pageReferences.add (myTopics[i].pageReferences[j].sourceText, PageReferenceType.currentPage);
                    myTopics[i].name += "@@@@"
    myTopics = myIndex.topics.everyItem().getElements();
    for (i = myTopics.length-1; i > -1; i--)
      if (myTopics[i].name.search ("@@@@") > -1)
         myTopics[i].remove ();