Telecom Billing System (TBSys)

Simple CLI project was written as part of my technical interview assessment.

Video Demo: https://asciinema.org/a/AgRCZs0bk6eDptj9kPOe81Cwb

Telecom billing system is a software application used by telecommunication companies to manage and automate their billing and revenue management processes.

Quick run using docker

Just one command:

# https://hub.docker.com/r/smalinux/tbsys
docker run -it --rm smalinux/tbsys

Build the source code:

Install dependencies:

# cmake gcc sqlite3 sqlite3.h criterion
apt-get install cmake build-essential sqlite3 libsqlite3-dev libcriterion-dev

build:

git clone https://github.com/smalinux/TBSys
cd TBSys
make

run:

./tbsys

# or

./tbsys 2> /dev/null # skip logs

run unit tests:

make test

automate formatting the code:

astyle -r -xb -s3 -p -xg -c -k1 -W1 -H \*.c \*.h

Generate docs

doxygen

TODO

• Sqlite DB support
• Use library to create formatted ASCII tables for console applications
• Dockerizing TBSys
• Doxygen support
• astyle support
• Input Validation (Almost done. skip it for now.)
• Check scanf return value: https://stackoverflow.com/q/7271939/5688267
• Unit testing using criterion unit test framework
• logging support using rxi/log
• Add rxi/log as git subtree (trivial. skip it for now.)
• Add fort.ch as git subtree (trivial. skip it for now.)
• Add unit test to check if rxi/log is working (trivial. skip it for now.)
• Split tbsys.[ch] to more logical modules. (Leave it for now!) db.ch, message.ch, etc
• Support argc & argv to invoke tbsys operations as a script (trivial. skip it)
• Use IWYU (Leave it for now!)
• Add GitHub actions for CI/CD
• Use OOP framework like Maloc