Implement User Authentication Mutations

[0xdevcollins]

Description

Create mutation hooks for user authentication operations including password management, session handling, and sign-out functionality using Better Auth.

Context

This issue covers the core authentication mutations that allow users to manage their authentication state and credentials.

Reference:

• https://www.better-auth.com/docs/basic-usage#signout
• https://www.better-auth.com/docs/concepts/session-management#revoke-session
• https://www.better-auth.com/docs/concepts/users-accounts#change-password

Files to create

• change-password-mutation.ts
• sign-out-mutation.ts
• revoke-session-mutation.ts

Mutations to Implement

1. Change Password Mutation

File: user/change-password-mutation.ts

• Create useChangePassword mutation hook

    const { mutate: changePassword, isPending, isError } = useChangePassword();
  
    changePassword({
      currentPassword: string;
      newPassword: string;
      confirmPassword: string;
      revokeOtherSessions?: boolean;
    });

• Validate current password before change

• Enforce password strength requirements

• Handle Better Auth password change API

• Show success/error notifications

• Invalidate user session if needed

Acceptance Criteria:

• Validates current password is correct
• New password meets security requirements (min 8 chars, uppercase, lowercase, number, special char)
• Passwords match validation
• Error handling for weak passwords
• Success toast notification
• Auto sign-out after password change (optional)

2. Sign Out Mutation

File: user/sign-out-mutation.ts

• Create useSignOut mutation hook

const { mutate: signOut, isPending } = useSignOut();

signOut(); // Signs out current user

• Clear Better Auth session
• Clear local storage/cookies
• Redirect to login page
• Clear React Query cache
• Handle sign-out errors gracefully

Acceptance Criteria:

• Clears all authentication tokens
• Removes user data from state
• Redirects to /login or home page
• Clears cached queries
• Shows confirmation toast
• Handles network errors

3. Revoke Session Mutation

File: user/revoke-session-mutation.ts

• Create useRevokeSession mutation hook

const { mutate: revokeSession } = useRevokeSession();

revokeSession({ sessionId: string });

• Revoke specific user session by ID
• Support revoking all sessions except current
• Integrate with Better Auth session management
• Update active sessions list
• Show revocation confirmation

Acceptance Criteria:

• Can revoke individual sessions
• Option to revoke all other sessions
• Updates session list immediately
• Shows success confirmation
• Handles already-revoked sessions gracefully

Technical Requirements

React Query Setup

• Use useMutation from @tanstack/react-query
• Proper error handling with Better Auth error types
• Optimistic updates where applicable
• Query invalidation after successful mutations
  Type Safety

interface ChangePasswordInput {
  currentPassword: string;
  newPassword: string;
  confirmPassword: string;
}

interface RevokeSessionInput {
  sessionId: string;
  revokeAll?: boolean;
}

Error Handling

• Handle Better Auth specific errors
• Network error handling
• Form validation errors
• User-friendly error messages

[linear]

BOU-57

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⚠️ Possible Duplicate Issue

• https://github.com/boundlessfi/bounties/issues/35

🔗 Related PRs

#16 - Add GitHub Authentication via Better Auth [closed]
#30 - feat: Implement React Query hooks for managing bounties [closed]

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[Dprof-in-tech]

@Dprof-in-tech has applied to work on this issue as part of the Stellar Wave Program's 1st wave.

Hello, please i would love to work on this issue

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[Dprof-in-tech]

Hello @0xdevcollins , thank you for assigning this issue. I have linked a PR to close it