98 lines
No EOL
2.8 KiB
C#
98 lines
No EOL
2.8 KiB
C#
using Isopoh.Cryptography.Argon2;
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using Microsoft.EntityFrameworkCore;
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using Mizuki.Database;
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using Mizuki.Database.Models;
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namespace Mizuki.Services;
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/// <summary>
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/// The user service.
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/// </summary>
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/// <param name="dbContext">The Mizuki database context.</param>
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public class UserService(
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MizukiDbContext dbContext)
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{
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/// <summary>
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/// Check if a user with the given username exists.
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/// </summary>
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/// <param name="username">The username.</param>
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/// <returns>Whether they exist.</returns>
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public async Task<bool> UsernameTaken(
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string username)
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{
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return await dbContext.Users
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.AnyAsync(u => u.Username == username);
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}
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/// <summary>
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/// Gets a user with the given username.
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/// </summary>
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/// <param name="username">The username.</param>
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/// <returns>The user model.</returns>
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public async Task<User> GetUserForUsername(
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string username)
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{
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return await dbContext.Users
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.FirstAsync(u => u.Username == username);
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}
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/// <summary>
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/// Check if the password is valid for the given user.
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/// </summary>
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/// <param name="username">The user's name.</param>
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/// <param name="password">The password.</param>
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/// <returns>Whether it's valid.</returns>
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public async Task<bool> CheckPasswordForUser(
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string username,
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string password)
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{
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var user = await dbContext.Users
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.FirstOrDefaultAsync(u => u.Username == username);
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if (user is null)
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return false;
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return Argon2.Verify(user.PasswordHash, password);
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}
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/// <summary>
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/// Creates a user with the given username and password.
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/// </summary>
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/// <param name="username">The username.</param>
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/// <param name="password">The password.</param>
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/// <returns>Whether the user was created.</returns>
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public async Task<User?> CreateUser(
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string username,
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string password)
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{
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if (await UsernameTaken(username))
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return null;
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var hash = Argon2.Hash(password);
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var userModel = new User
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{
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Id = Guid.NewGuid(),
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Username = username,
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PasswordHash = hash
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};
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await dbContext.Users.AddAsync(userModel);
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await dbContext.SaveChangesAsync();
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return userModel;
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}
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/// <summary>
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/// Updates the password for a given user.
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/// </summary>
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/// <param name="user">The user.</param>
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/// <param name="newPassword">The new password.</param>
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public async Task UpdatePasswordFor(
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User user,
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string newPassword)
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{
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user.PasswordHash = Argon2.Hash(newPassword);
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dbContext.Users.Update(user);
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await dbContext.SaveChangesAsync();
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}
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} |