Jan Rajnoha

Cloud cash

Cloud Cash is information system consisting of cash system app called Cloud Cash and Management app (Desktop apps), web pages cloudcash.cz (presentation) and CRM (main place for customers to "communicate" with premise), API and database.

System has been built for Para Bellum Lounge, but will be in new future available for all.

Desktop apps are written in new Windows App SDK and distributed through Microsoft Store for better update experience and security.

Web pages are written in Blazor with usage of MudBlazor for components, API is classic REST API created in .NET and database is running on Azure MS SQL Server.

System is running on Azure cloud, where is using another services, for example WebApps, Functions, Analytics, SinglaR and many others.

This project has been used as material for my master thesis.

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Para Bellum Lounge

Para Bellum Lounge is shisha bar located in Brno, Czech Republic, where I'm co-owner and manager of web page, which has been created by myself.

Web page has been built on HTML, CSS and JS only.

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ISUF

Bachelor thesis

ISUF is concept of framework for creating information systems for applications built for Windows 10 on Universal Windows Platform. Main advantage of this framework is simplified craetion of modules for application using code frst approach. Framewrk after analyzing model create database table, module page in application and side panes for working with each records.

ISUF has three main parts - Base, Storage and UI. Each part has different usage and manage different part of application logic.

• Base - Manage all modules registered in applications. Base part also include support classes, attributes, enums and messages for Messenger design pattern and basic services, like LogService for logging message from application
• Storage - Manage all accesses into database and working with records. This part also include improved manager for modules.
• UI - Creating application, module pages, side panes, view models, controls and other behavior of application is main reason of UI part. Like others parts, UI has improved module manager for working with UI modules.

ISUF is currently only concept and demonstrate possibilities of creating modular app on UWP. Modules in concept are only pseudo modules, because they can't be loaded dynamically during app run, but could be really simply created and enabled by settings included in app.

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The Daily Notes

One of my the biggest projects for Windows 10 and formerly Windows 10 Mobile. The Daily Notes developed from The Daily Tasks, which was app for tracking your daily activities with showing results in calendar in app and with colorful background for each task. App was really bad and in developer eyes breaks many principles of programming. So I started almost from scratch and take only core to new app. The Daily Notes is application focused for organizing your time with activities, to-dos, notes and many other things which was not developed yet. I tried here many functions, like sharing data from app with friends, creating bigger generic library, programming modular-based app or managing user groups for developing beta versions. TDN was primarily focused for mobiles and platform Windows 10 Mobile, which lacked app of this type. End of mobile Windows means for TDN new start with additions of functions and benefits from desktop Windows. The biggest benefit was Fluent Design system, that could give application modern design and made it different.

All of this things above was transformed and generalized into framework and my bachelor thesis, ISUF.

The Daily Notes was created on UWP technology with XML local storage, beta version distributing and modular system.

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Chatter

School project

School project for basic communication app with organizations (groups) support, roles (admin, user) with focus on simple design and bunch of features for better managing whole application.

App is created on WPF platform and is only for Windows. Design is based on Microsoft Teams and for database was used MS Azure with SQL server.

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IVS Calculator

School project

School project for experience work with teammates. For some members of our team it was first time, when they work with group of people on same problem. First time to use version control system for other reasons than storing code. I tried prepare for them the most things, they could see in real company, like build pipelines, continues integration, notification via MS Teams or canban style of work. Calculator itself is basic application with basic functions.

App is created with UWP technology for Windows 10 devices. App was divided into 2 parts - app and library for better understanding principles of libraries. Required features were e.g. update system, help and intuitive UI.

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DVData

Simple application for managing database of movies with mining information from Czechoslovakia movie database. This application is very similar to DVDatabaze, which was created few years before this, but comes with some new features. One of it was completely changed design and much easier working with records. For movie and people cards was added gallery and app was overall faster. For database was used same technology - SQLite.

Application was created with WPF technology and is available only for Windows. Database was stored locally using SQLite technology and for mining information was used XPath.

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DVDatabaze

Basic application for managing database of movies with mining information from Czechoslovakia movie database. This was one of my the first projects. We have many DVD movies and sometimes you need to know, what you have, so I decided to create something simple, what makes importing movies easier. You could insert movie by yourself of try online database for any match. But this was not enough for me, so i added thumbnails, which shows after hovering record in database, online rating and checking, if I saw that movie and if I had it. However, this is only for short term problems. With more and more movies there was more and more information about movie to remember, like summary or actors, so I add function for movie and people cards.

I created this app on elementary school with WinForms technology, so code is not any special, but helped me understand many basics principles of programming. For Database was used SQLite and for data mining parsing web pages using XPath.

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