43 lines
1.1 KiB
Go
43 lines
1.1 KiB
Go
package usecase
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import (
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"context"
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"errors"
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"github.com/emil28092005/SciMesh/users/internal/domain"
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)
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// Login verifies credentials and issues a signed token.
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type Login struct {
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users UserRepository
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hasher PasswordHasher
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tokens TokenIssuer
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}
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func NewLogin(users UserRepository, hasher PasswordHasher, tokens TokenIssuer) *Login {
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return &Login{users: users, hasher: hasher, tokens: tokens}
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}
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// Execute returns a signed token and the user on success. It returns
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// ErrInvalidCredentials for both an unknown email and a wrong password so the
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// two cases are indistinguishable to a caller probing for valid accounts.
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func (l *Login) Execute(ctx context.Context, email, password string) (string, *domain.User, error) {
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u, err := l.users.GetByEmail(ctx, domain.NormalizeEmail(email))
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if err != nil {
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if errors.Is(err, ErrUserNotFound) {
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return "", nil, ErrInvalidCredentials
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}
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return "", nil, err
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}
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if err := l.hasher.Compare(u.PasswordHash, password); err != nil {
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return "", nil, ErrInvalidCredentials
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}
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token, err := l.tokens.Issue(u.ID, u.Role)
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if err != nil {
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return "", nil, err
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}
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return token, u, nil
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}
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