FileValidator

The goal of this project was to create a simple solution to enable validation of log file.

Project consists of two parts:

• Blazor Server app written using MVVM pattern to keep markup and logic neatly separeted
• Core Library containig logic and predefined rules for line validator

The assumed file structure consists of N rows (However the total size must be under 3MiB):
Event-Name; Event-Description; Start-Date-Time; End-Date-Time;
With constraints:

• Event-Name is not null or empty and under 32 characters long
• Event-Description is not null or empty and under 255 characters long
• Start-Date matches format yyyy-MM-ddTHH:mm:sszzz
• End-Date matches format yyyy-MM-ddTHH:mm:sszzz

To create your own validation rule make use of:

new CsvLineParserBuilder()
  .WithSeparator(';')
  .WithProperty(propName, errorMsg, params validationPredicates[])
  .Build();

There is some settings made by default (Including max file size, allowed extensions of file and path to temporarily stored file). You may easily change them via modifying appsettings.json file.

Resources I made use of:

• Best way to implement MVVM in Blazor
• Best way to handle downloading files using JSInterop