A node program that moniters your keystrokes and blocks you from typing black listed words

Genenral Development Notes

General Archetecture

This is an electron app the has the main.js, index.js, index.html for UI, as for the
blocking functinality main entry point (no UI) it is initCapture.js.

InitCapture listens to the user keyboard input and forwords the reading to processKey.js and if a user types a black listed keyword it executes a python script which backspaces "deletes" what the user typed. It does that by using a python library called pyautogui to automate backspace event

Why switched away from robotJS to node-key-sender library then switched to running a python shell in the node program

Migrated from the robotJS node-key-sender, because robotJS was very slow to execute keyboard events, like pressing backspace. The speed could not be altered as the function setKeyboardDelay() did not work.

note about robotJS: it requires nodeJS native add-ons which can be obtained with this command sudo npm install -g node-gyp The robotJS requires the make command so make sure you have that installed

Then again had to switch, because the node-key-sender was too slow to execute key commands, and it wasn't accurate, may the order of execution did not match the order of the code or maybe its a timing thing for example: // ks.sendCombination(['@17', '@65']); // ks.sendKey("@8"); // ks.sendKey("@8"); The send combinatin would press ctrl + A (@17 is ctrl and @65 is a), then @8 (backspace) would follow, this did not always erase the whole text, it was a hit or miss. Therefor I switched to a python script that the node program runs, it worked perfectly, in fact the response time was a lot faster. It uses the library pyautogui, and the script the node calls is handle_response.py

Note about keyboard event capture library

Maybe switch keyboard events to use the npm module keypress it is probably cross platform, but it can't process numbers and symbols

String matching

Uses fuzzball package which depends on the edit distance principle for figuring out how similar strings are for more info about it go to https://en.wikipedia.org/wiki/Edit_distance and https://en.wikipedia.org/wiki/Levenshtein_distance.

Code examples

    //simple ratio of single words
    let simpleRatio = fuzz.ratio("man", buffer);

    // very good with longer sentences
    let tokenSetRatio = fuzz.token_set_ratio("man", buffer);

    //sort ratio is good for order of words
    // let token_sort_ratio

    //partial ratio doesnt work good for us here as say for example man is blacklisted
    //then a would score 100, a 'a' is a substring of man. it would trigger so many false positives

extra features

instead of removing the text, press ctrl f4 to close the whole thing or to switch off the computer cool down time after when seetings take place if the user sets hard mode ON aka persistnt make it presistanct, that it opens it self again if user cloeses it from the system moniter clipboard moniter ie copy+ paster check account for pressing ctrl z for getting back the deleted words create seperate strings file where u keep all strings, to support multi langauges

things to fix

it keeps opening a new a new tab whenever I block a keyword in the browser URL space... it is on and off When user types too fast, the ctrl +a can become ctrl + something else, maybe use a batch type... account for the left and right keys