consolidated pdf generation for moodle collage ppts

Step 1: Download files from Moodle (https://taxila-aws.bits-pilani.ac.in/)

you can manually download the files by clicking through each file, or do the following

1. go to course page, inspect page, go to console and run below

document.querySelectorAll("a.aalink.stretched-link")

2. find the count of id the the session materials start... and change slice_from to that number

slice_from= 12
Array.from(document.querySelectorAll("a.aalink.stretched-link")).slice(slice_from).forEach((link, i) => {
  setTimeout(() => {
    link.click();
  }, i * 1000); 
});

Step 2: organize the files

3. move all the downloaded files to a dedicated folder (i use yazi-rs to do this)

Step 3: convert to pdfs

4. use libreoffice cli to convert files to pdfs

libreoffice --convert-to pdf *.ppt*

5. move pdf files to a new folder

mkdir pdfs
mv *.pdf pdfs/
cd pdfs/

Step 4: pdfunite

6. usepdfunite to combine all pdfs

pdfunite "CS1.pdf" "CS2.pdf" "CS3.pdf" "CS4.pdf" "CS5.pdf" "CS6.pdf" "CS7.pdf" "CS9.pdf" "CS10.pdf" "CS11.pdf" "CS12.pdf" "CS13,1415.pdf" statistical-inference-and-applications-consolidated-ppts.pdf

• you can use vim to quickly create the command
  • open vim
  • type ls
  • visual select it using shift-v, type :!bash to run it and get output back to buffer
  • sort the files using vim edits (or you can use yazi's batch replace to change name of the files in an incremental order)
  • regex replace to add double quotes , :%s/^/"/ and :%s/$/"/
  • select all with ggVG, press J to make it a single line
  • add pdfunite in the start and output.pdf at the end - copy and run it in terminal

Optional operations

OCR enabled PDFs for searching text

• Use OCR enable pdf (text searchable), use ocrmypdf

ocrmypdf input.pdf --force-ocr output.pdf

Tiled PDFs for printing

• use pdfjam to create tiled pdfs

pdfjam --landscape --nup 3x3 --paper a4paper --outfile software-design-principals-consolidated-3x3-landscape.pdf ./software-design-principals-consolidated.pdf
# pdfjam --nup 3x3 --paper a4paper --angle 90 --outfile output.pdf computing-and-design-ppts-consolidated.pdf

crop and zoom in

 pdfjam --trim '5mm 15mm 5mm 15mm' --clip true --landscape --nup 3x3 --paper a4paper --outfile software-design-principals-consolidated-3x3-landscape.pdf ./software-design-principals-consolidated.pdf

Page number

pdfcpu stamp add -m text -- "%p" "pos:br, scale:0.02, rot:0" statistical-inference-and-applications-consolidated-3x3-landscape.pdf output.pdf

rough tests

pdfcpu stamp add -m text -- "Page %p of %P" "pos:br, scale:0.4, rot:0" database-design-ppts-consolidate.pdf output.pdf
pdfcpu stamp add -m text -- "%p" "pos:br, scale:0.4, rot:0" database-design-ppts-consolidate.pdf output.pdf      
pdfcpu nup -- "formsize:A4, orientation:rd" out9.pdf 9 database-design-ppts-consolidate.pdf