mirror of
https://github.com/aaronpo97/the-biergarten-app.git
synced 2026-07-16 17:47:22 +00:00
code style cleanup
This commit is contained in:
Aaron Po
@@ -4,28 +4,30 @@ using Domain.Entities;
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namespace Features.Auth.Services;
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/// <summary>
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/// Identifies the kind of token being generated or validated.
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/// Identifies the kind of token being generated or validated.
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/// </summary>
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public enum TokenType
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{
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/// <summary>A short-lived token used to authorize API requests.</summary>
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AccessToken,
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/// <summary>A long-lived token used to obtain new access tokens.</summary>
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RefreshToken,
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/// <summary>A short-lived token used to confirm a user's email/account.</summary>
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ConfirmationToken,
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ConfirmationToken
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}
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/// <summary>
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/// Represents the result of successfully validating a token.
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/// Represents the result of successfully validating a token.
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/// </summary>
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/// <param name="UserId">The unique identifier of the user the token belongs to.</param>
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/// <param name="Username">The username extracted from the token's claims.</param>
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/// <param name="Principal">The <see cref="ClaimsPrincipal"/> produced from the validated token.</param>
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/// <param name="Principal">The <see cref="ClaimsPrincipal" /> produced from the validated token.</param>
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public record ValidatedToken(Guid UserId, string Username, ClaimsPrincipal Principal);
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/// <summary>
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/// Represents the result of refreshing a user's session.
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/// Represents the result of refreshing a user's session.
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/// </summary>
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/// <param name="UserAccount">The user account associated with the refreshed session.</param>
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/// <param name="RefreshToken">The newly issued refresh token.</param>
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@@ -37,77 +39,79 @@ public record RefreshTokenResult(
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);
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/// <summary>
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/// Defines the expiration windows, in hours, for each type of token issued by <see cref="ITokenService"/>.
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/// Defines the expiration windows, in hours, for each type of token issued by <see cref="ITokenService" />.
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/// </summary>
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public static class TokenServiceExpirationHours
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{
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/// <summary>The expiration window, in hours, for access tokens.</summary>
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public const double AccessTokenHours = 1;
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/// <summary>The expiration window, in hours, for refresh tokens (21 days).</summary>
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public const double RefreshTokenHours = 504; // 21 days
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/// <summary>The expiration window, in hours, for confirmation tokens (30 minutes).</summary>
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public const double ConfirmationTokenHours = 0.5; // 30 minutes
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}
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/// <summary>
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/// Defines operations for generating and validating JWTs used for access, refresh, and account confirmation.
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/// Defines operations for generating and validating JWTs used for access, refresh, and account confirmation.
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/// </summary>
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public interface ITokenService
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{
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/// <summary>
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/// Generates a new access token for the given user.
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/// Generates a new access token for the given user.
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/// </summary>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed access token string.</returns>
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string GenerateAccessToken(UserAccount user);
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/// <summary>
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/// Generates a new refresh token for the given user.
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/// Generates a new refresh token for the given user.
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/// </summary>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed refresh token string.</returns>
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string GenerateRefreshToken(UserAccount user);
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/// <summary>
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/// Generates a new confirmation token for the given user.
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/// Generates a new confirmation token for the given user.
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/// </summary>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed confirmation token string.</returns>
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string GenerateConfirmationToken(UserAccount user);
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/// <summary>
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/// Generates a token of the type specified by <typeparamref name="T"/>, which must be <see cref="TokenType"/>.
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/// Generates a token of the type specified by <typeparamref name="T" />, which must be <see cref="TokenType" />.
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/// </summary>
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/// <typeparam name="T">The enum type identifying which kind of token to generate. Must be <see cref="TokenType"/>.</typeparam>
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/// <typeparam name="T">The enum type identifying which kind of token to generate. Must be <see cref="TokenType" />.</typeparam>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed token string corresponding to the requested token type.</returns>
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string GenerateToken<T>(UserAccount user) where T : struct, Enum;
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/// <summary>
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/// Validates an access token.
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/// Validates an access token.
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/// </summary>
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/// <param name="token">The access token string to validate.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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Task<ValidatedToken> ValidateAccessTokenAsync(string token);
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/// <summary>
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/// Validates a refresh token.
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/// Validates a refresh token.
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/// </summary>
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/// <param name="token">The refresh token string to validate.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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Task<ValidatedToken> ValidateRefreshTokenAsync(string token);
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/// <summary>
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/// Validates a confirmation token.
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/// Validates a confirmation token.
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/// </summary>
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/// <param name="token">The confirmation token string to validate.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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Task<ValidatedToken> ValidateConfirmationTokenAsync(string token);
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/// <summary>
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/// Validates a refresh token and issues a new access/refresh token pair for the associated user.
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/// Validates a refresh token and issues a new access/refresh token pair for the associated user.
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/// </summary>
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/// <param name="refreshTokenString">The refresh token string to validate and exchange.</param>
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/// <returns>A <see cref="RefreshTokenResult"/> containing the user and newly issued tokens.</returns>
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/// <returns>A <see cref="RefreshTokenResult" /> containing the user and newly issued tokens.</returns>
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Task<RefreshTokenResult> RefreshTokenAsync(string refreshTokenString);
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}
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}
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@@ -1,5 +1,5 @@
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using System.Security.Claims;
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using System.IdentityModel.Tokens.Jwt;
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using System.Security.Claims;
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using Domain.Entities;
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using Domain.Exceptions;
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using Features.Auth.Repository;
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@@ -8,27 +8,26 @@ using Infrastructure.Jwt;
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namespace Features.Auth.Services;
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/// <summary>
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/// Default implementation of <see cref="ITokenService"/> that generates and validates JWTs
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/// for access, refresh, and confirmation flows using secrets read from environment variables.
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/// Default implementation of <see cref="ITokenService" /> that generates and validates JWTs
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/// for access, refresh, and confirmation flows using secrets read from environment variables.
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/// </summary>
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public class TokenService : ITokenService
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{
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private readonly ITokenInfrastructure _tokenInfrastructure;
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private readonly IAuthRepository _authRepository;
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private readonly string _accessTokenSecret;
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private readonly string _refreshTokenSecret;
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private readonly IAuthRepository _authRepository;
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private readonly string _confirmationTokenSecret;
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private readonly string _refreshTokenSecret;
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private readonly ITokenInfrastructure _tokenInfrastructure;
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/// <summary>
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/// Initializes a new instance of <see cref="TokenService"/>, loading the access, refresh, and
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/// confirmation token signing secrets from environment variables.
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/// Initializes a new instance of <see cref="TokenService" />, loading the access, refresh, and
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/// confirmation token signing secrets from environment variables.
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/// </summary>
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/// <param name="tokenInfrastructure">The infrastructure component used to generate and validate JWTs.</param>
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/// <param name="authRepository">Repository used to look up user accounts during token refresh.</param>
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/// <exception cref="InvalidOperationException">
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/// Thrown when any of the <c>ACCESS_TOKEN_SECRET</c>, <c>REFRESH_TOKEN_SECRET</c>, or
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/// <c>CONFIRMATION_TOKEN_SECRET</c> environment variables are not set.
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/// Thrown when any of the <c>ACCESS_TOKEN_SECRET</c>, <c>REFRESH_TOKEN_SECRET</c>, or
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/// <c>CONFIRMATION_TOKEN_SECRET</c> environment variables are not set.
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/// </exception>
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public TokenService(
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ITokenInfrastructure tokenInfrastructure,
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@@ -39,139 +38,170 @@ public class TokenService : ITokenService
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_authRepository = authRepository;
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_accessTokenSecret = Environment.GetEnvironmentVariable("ACCESS_TOKEN_SECRET")
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?? throw new InvalidOperationException("ACCESS_TOKEN_SECRET environment variable is not set");
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?? throw new InvalidOperationException(
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"ACCESS_TOKEN_SECRET environment variable is not set");
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_refreshTokenSecret = Environment.GetEnvironmentVariable("REFRESH_TOKEN_SECRET")
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?? throw new InvalidOperationException("REFRESH_TOKEN_SECRET environment variable is not set");
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?? throw new InvalidOperationException(
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"REFRESH_TOKEN_SECRET environment variable is not set");
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_confirmationTokenSecret = Environment.GetEnvironmentVariable("CONFIRMATION_TOKEN_SECRET")
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?? throw new InvalidOperationException("CONFIRMATION_TOKEN_SECRET environment variable is not set");
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?? throw new InvalidOperationException(
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"CONFIRMATION_TOKEN_SECRET environment variable is not set");
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}
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/// <summary>
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/// Generates an access token for the given user, signed with the access token secret and
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/// expiring after <see cref="TokenServiceExpirationHours.AccessTokenHours"/> hours.
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/// Generates an access token for the given user, signed with the access token secret and
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/// expiring after <see cref="TokenServiceExpirationHours.AccessTokenHours" /> hours.
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/// </summary>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed access token string.</returns>
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public string GenerateAccessToken(UserAccount user)
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{
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var expiresAt = DateTime.UtcNow.AddHours(TokenServiceExpirationHours.AccessTokenHours);
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DateTime expiresAt = DateTime.UtcNow.AddHours(TokenServiceExpirationHours.AccessTokenHours);
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return _tokenInfrastructure.GenerateJwt(user.UserAccountId, user.Username, expiresAt, _accessTokenSecret);
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}
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/// <summary>
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/// Generates a refresh token for the given user, signed with the refresh token secret and
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/// expiring after <see cref="TokenServiceExpirationHours.RefreshTokenHours"/> hours.
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/// Generates a refresh token for the given user, signed with the refresh token secret and
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/// expiring after <see cref="TokenServiceExpirationHours.RefreshTokenHours" /> hours.
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/// </summary>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed refresh token string.</returns>
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public string GenerateRefreshToken(UserAccount user)
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{
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var expiresAt = DateTime.UtcNow.AddHours(TokenServiceExpirationHours.RefreshTokenHours);
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DateTime expiresAt = DateTime.UtcNow.AddHours(TokenServiceExpirationHours.RefreshTokenHours);
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return _tokenInfrastructure.GenerateJwt(user.UserAccountId, user.Username, expiresAt, _refreshTokenSecret);
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}
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/// <summary>
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/// Generates a confirmation token for the given user, signed with the confirmation token secret and
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/// expiring after <see cref="TokenServiceExpirationHours.ConfirmationTokenHours"/> hours.
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/// Generates a confirmation token for the given user, signed with the confirmation token secret and
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/// expiring after <see cref="TokenServiceExpirationHours.ConfirmationTokenHours" /> hours.
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/// </summary>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed confirmation token string.</returns>
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public string GenerateConfirmationToken(UserAccount user)
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{
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var expiresAt = DateTime.UtcNow.AddHours(TokenServiceExpirationHours.ConfirmationTokenHours);
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DateTime expiresAt = DateTime.UtcNow.AddHours(TokenServiceExpirationHours.ConfirmationTokenHours);
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return _tokenInfrastructure.GenerateJwt(user.UserAccountId, user.Username, expiresAt, _confirmationTokenSecret);
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}
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/// <summary>
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/// Generates a token of the kind specified by <typeparamref name="T"/>, dispatching to
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/// <see cref="GenerateAccessToken"/>, <see cref="GenerateRefreshToken"/>, or
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/// <see cref="GenerateConfirmationToken"/> based on the corresponding <see cref="TokenType"/> value.
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/// Generates a token of the kind specified by <typeparamref name="T" />, dispatching to
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/// <see cref="GenerateAccessToken" />, <see cref="GenerateRefreshToken" />, or
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/// <see cref="GenerateConfirmationToken" /> based on the corresponding <see cref="TokenType" /> value.
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/// </summary>
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/// <typeparam name="T">The enum type identifying which kind of token to generate. Must be <see cref="TokenType"/>.</typeparam>
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/// <typeparam name="T">The enum type identifying which kind of token to generate. Must be <see cref="TokenType" />.</typeparam>
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/// <param name="user">The user account to generate the token for.</param>
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/// <returns>The signed token string corresponding to the requested token type.</returns>
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/// <exception cref="InvalidOperationException">
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/// Thrown when <typeparamref name="T"/> is not <see cref="TokenType"/> or does not resolve to a known token type.
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/// Thrown when <typeparamref name="T" /> is not <see cref="TokenType" /> or does not resolve to a known token type.
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/// </exception>
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public string GenerateToken<T>(UserAccount user) where T : struct, Enum
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{
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if (typeof(T) != typeof(TokenType))
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throw new InvalidOperationException("Invalid token type");
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var tokenTypeName = typeof(T).Name;
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if (!Enum.TryParse(typeof(TokenType), tokenTypeName, out var parsed))
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string tokenTypeName = typeof(T).Name;
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if (!Enum.TryParse(typeof(TokenType), tokenTypeName, out object? parsed))
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throw new InvalidOperationException("Invalid token type");
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var tokenType = (TokenType)parsed;
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TokenType tokenType = (TokenType)parsed;
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return tokenType switch
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{
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TokenType.AccessToken => GenerateAccessToken(user),
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TokenType.RefreshToken => GenerateRefreshToken(user),
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TokenType.ConfirmationToken => GenerateConfirmationToken(user),
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_ => throw new InvalidOperationException("Invalid token type"),
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_ => throw new InvalidOperationException("Invalid token type")
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};
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}
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/// <summary>
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/// Validates an access token against the access token secret.
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/// Validates an access token against the access token secret.
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/// </summary>
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/// <param name="token">The access token string to validate.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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/// <exception cref="Domain.Exceptions.UnauthorizedException">
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/// Thrown when the token is missing required claims, has a malformed user ID, or otherwise fails validation.
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/// Thrown when the token is missing required claims, has a malformed user ID, or otherwise fails validation.
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/// </exception>
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public async Task<ValidatedToken> ValidateAccessTokenAsync(string token)
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=> await ValidateTokenInternalAsync(token, _accessTokenSecret, "access");
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{
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return await ValidateTokenInternalAsync(token, _accessTokenSecret, "access");
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}
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/// <summary>
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/// Validates a refresh token against the refresh token secret.
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/// Validates a refresh token against the refresh token secret.
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/// </summary>
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/// <param name="token">The refresh token string to validate.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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/// <exception cref="Domain.Exceptions.UnauthorizedException">
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/// Thrown when the token is missing required claims, has a malformed user ID, or otherwise fails validation.
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/// Thrown when the token is missing required claims, has a malformed user ID, or otherwise fails validation.
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/// </exception>
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public async Task<ValidatedToken> ValidateRefreshTokenAsync(string token)
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=> await ValidateTokenInternalAsync(token, _refreshTokenSecret, "refresh");
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{
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return await ValidateTokenInternalAsync(token, _refreshTokenSecret, "refresh");
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}
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/// <summary>
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/// Validates a confirmation token against the confirmation token secret.
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/// Validates a confirmation token against the confirmation token secret.
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/// </summary>
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/// <param name="token">The confirmation token string to validate.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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/// <exception cref="Domain.Exceptions.UnauthorizedException">
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/// Thrown when the token is missing required claims, has a malformed user ID, or otherwise fails validation.
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/// Thrown when the token is missing required claims, has a malformed user ID, or otherwise fails validation.
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/// </exception>
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public async Task<ValidatedToken> ValidateConfirmationTokenAsync(string token)
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=> await ValidateTokenInternalAsync(token, _confirmationTokenSecret, "confirmation");
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{
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return await ValidateTokenInternalAsync(token, _confirmationTokenSecret, "confirmation");
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}
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/// <summary>
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/// Performs the shared validation logic for access, refresh, and confirmation tokens:
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/// validates the JWT signature/expiration, then extracts and parses the user ID and username claims.
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/// Validates the given refresh token, looks up the associated user, and issues a fresh
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/// access/refresh token pair.
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/// </summary>
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/// <param name="refreshTokenString">The refresh token string to validate and exchange.</param>
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/// <returns>A <see cref="RefreshTokenResult" /> containing the user and newly issued tokens.</returns>
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/// <exception cref="Domain.Exceptions.UnauthorizedException">
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/// Thrown when the refresh token is invalid, or when the user account it refers to no longer exists.
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/// </exception>
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public async Task<RefreshTokenResult> RefreshTokenAsync(string refreshTokenString)
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{
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ValidatedToken validated = await ValidateRefreshTokenAsync(refreshTokenString);
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UserAccount? user = await _authRepository.GetUserByIdAsync(validated.UserId);
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if (user == null)
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throw new UnauthorizedException("User account not found");
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string newAccess = GenerateAccessToken(user);
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string newRefresh = GenerateRefreshToken(user);
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return new RefreshTokenResult(user, newRefresh, newAccess);
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}
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/// <summary>
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/// Performs the shared validation logic for access, refresh, and confirmation tokens:
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/// validates the JWT signature/expiration, then extracts and parses the user ID and username claims.
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/// </summary>
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/// <param name="token">The token string to validate.</param>
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/// <param name="secret">The secret key to validate the token's signature against.</param>
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/// <param name="tokenType">A human-readable label (e.g. "access", "refresh", "confirmation") used in error messages.</param>
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/// <returns>A <see cref="ValidatedToken"/> describing the token's claims.</returns>
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/// <returns>A <see cref="ValidatedToken" /> describing the token's claims.</returns>
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/// <exception cref="Domain.Exceptions.UnauthorizedException">
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/// Thrown when required claims are missing, the user ID claim is not a valid <see cref="Guid"/>,
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/// or the underlying token validation fails for any other reason (e.g. expired or invalid signature).
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/// Thrown when required claims are missing, the user ID claim is not a valid <see cref="Guid" />,
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/// or the underlying token validation fails for any other reason (e.g. expired or invalid signature).
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/// </exception>
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private async Task<ValidatedToken> ValidateTokenInternalAsync(string token, string secret, string tokenType)
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{
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try
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{
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var principal = await _tokenInfrastructure.ValidateJwtAsync(token, secret);
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ClaimsPrincipal principal = await _tokenInfrastructure.ValidateJwtAsync(token, secret);
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var userIdClaim = principal.FindFirst(JwtRegisteredClaimNames.Sub)?.Value;
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var usernameClaim = principal.FindFirst(JwtRegisteredClaimNames.UniqueName)?.Value;
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string? userIdClaim = principal.FindFirst(JwtRegisteredClaimNames.Sub)?.Value;
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string? usernameClaim = principal.FindFirst(JwtRegisteredClaimNames.UniqueName)?.Value;
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if (string.IsNullOrEmpty(userIdClaim) || string.IsNullOrEmpty(usernameClaim))
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throw new UnauthorizedException($"Invalid {tokenType} token: missing required claims");
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if (!Guid.TryParse(userIdClaim, out var userId))
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if (!Guid.TryParse(userIdClaim, out Guid userId))
|
||||
throw new UnauthorizedException($"Invalid {tokenType} token: malformed user ID");
|
||||
|
||||
return new ValidatedToken(userId, usernameClaim, principal);
|
||||
@@ -185,26 +215,4 @@ public class TokenService : ITokenService
|
||||
throw new UnauthorizedException($"Failed to validate {tokenType} token: {e.Message}");
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Validates the given refresh token, looks up the associated user, and issues a fresh
|
||||
/// access/refresh token pair.
|
||||
/// </summary>
|
||||
/// <param name="refreshTokenString">The refresh token string to validate and exchange.</param>
|
||||
/// <returns>A <see cref="RefreshTokenResult"/> containing the user and newly issued tokens.</returns>
|
||||
/// <exception cref="Domain.Exceptions.UnauthorizedException">
|
||||
/// Thrown when the refresh token is invalid, or when the user account it refers to no longer exists.
|
||||
/// </exception>
|
||||
public async Task<RefreshTokenResult> RefreshTokenAsync(string refreshTokenString)
|
||||
{
|
||||
var validated = await ValidateRefreshTokenAsync(refreshTokenString);
|
||||
var user = await _authRepository.GetUserByIdAsync(validated.UserId);
|
||||
if (user == null)
|
||||
throw new UnauthorizedException("User account not found");
|
||||
|
||||
var newAccess = GenerateAccessToken(user);
|
||||
var newRefresh = GenerateRefreshToken(user);
|
||||
|
||||
return new RefreshTokenResult(user, newRefresh, newAccess);
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user