Create NSIS installer

You must have experience with the nsis installer language and nsis installers. I need someone to create an nsis installer that actually doesn't contain any files to install but instead moves files from one folder to another, renames most of the file names, and changes the contents of some of the files. Which files to copy will have a rule like "files that contain the word dog and AA or BB". The renaming of files will be simple like "change AA in the filename to HH". And the editing of the files will be a combination of "change all instances of XX to YY" and "insert these 3 lines into the file after this line in the file". About 100 files are involved. All of them quite small. A complete description of the project is uploaded as part of this project description.