62 lines
1.9 KiB
C#
62 lines
1.9 KiB
C#
using System.Security.Cryptography;
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using DysonNetwork.Shared.Models;
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using Microsoft.EntityFrameworkCore;
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namespace DysonNetwork.Pass.Affiliation;
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public class AffiliationSpellService(AppDatabase db)
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{
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public async Task<SnAffiliationSpell> CreateAffiliationSpell(Guid accountId, string? spellWord)
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{
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spellWord ??= _GenerateRandomString(8);
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if (await CheckAffiliationSpellHasTaken(spellWord))
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throw new InvalidOperationException("The spell has been taken.");
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var spell = new SnAffiliationSpell
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{
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AccountId = accountId,
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Spell = spellWord
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};
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db.AffiliationSpells.Add(spell);
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await db.SaveChangesAsync();
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return spell;
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}
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public async Task<SnAffiliationResult> CreateAffiliationResult(string spellWord, string resourceId)
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{
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var spell =
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await db.AffiliationSpells.FirstOrDefaultAsync(a => a.Spell == spellWord);
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if (spell is null) throw new InvalidOperationException("The spell was not found.");
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var result = new SnAffiliationResult
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{
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Spell = spell,
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ResourceIdentifier = resourceId
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};
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db.AffiliationResults.Add(result);
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await db.SaveChangesAsync();
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return result;
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}
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public async Task<bool> CheckAffiliationSpellHasTaken(string spellWord)
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{
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return await db.AffiliationSpells.AnyAsync(s => s.Spell == spellWord);
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}
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private static string _GenerateRandomString(int length)
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{
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const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
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var result = new char[length];
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using var rng = RandomNumberGenerator.Create();
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for (var i = 0; i < length; i++)
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{
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var bytes = new byte[1];
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rng.GetBytes(bytes);
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result[i] = chars[bytes[0] % chars.Length];
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}
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return new string(result);
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}
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} |