game-ideas/src/GameIdeas/Client/GameIdeas.BlazorApp/Helpers/GameHelper.cs

using GameIdeas.Shared.Dto;
using Microsoft.AspNetCore.Components.Authorization;
using System.Security.Claims;

namespace GameIdeas.BlazorApp.Helpers;

public static class GameHelper
{
    public static void WriteTrackingDto(GameDetailDto game, AuthenticationState authState)
    {
        if (authState == null)
        {
            throw new ArgumentNullException(nameof(authState), "Authentication state missing");
        }

        var userId = authState.User.FindFirstValue(ClaimTypes.Sid);

        if (userId == null)
        {
            throw new ArgumentNullException(nameof(authState), "user state missing");
        }

        game.CreationUserId = userId;
        game.CreationDate = DateTime.Now;
    }

    public static string GetInterestColor(int interest, int maxInterest)
    {
        int firstTier = (int)Math.Floor(0.33 * maxInterest);
        int secondTier = (int)Math.Ceiling(0.66 * maxInterest);

        return interest switch
        {
            int x when x <= firstTier => "--red",
            int x when x >= secondTier => "--green",
            _ => "--yellow",
        };
    }

    public static string GetFormatedStorageSpace(double? storageValue)
    {
        if (storageValue == null)
        {
            return string.Empty;
        }

        return storageValue switch
        {
            >= 1000000 => $"{storageValue / 1000000:f1} To",
            >= 1000 => $"{storageValue / 1000:f1} Go",
            _ => $"{storageValue:f1} Mo"
        };
    }
}