James Griffin
4989ff1061
Go backend with domain-based packages (volunteer, schedule, timeoff, checkin, notification), SQLite storage, JWT auth, and chi router. React TypeScript frontend with routing, auth context, and pages for all core features. Multi-stage Dockerfile and docker-compose included. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
83 lines
2.0 KiB
Go
83 lines
2.0 KiB
Go
package auth
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import (
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"database/sql"
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"errors"
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"fmt"
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"time"
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"github.com/golang-jwt/jwt/v5"
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"golang.org/x/crypto/bcrypt"
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)
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var ErrInvalidCredentials = errors.New("invalid credentials")
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type Claims struct {
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VolunteerID int64 `json:"volunteer_id"`
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Role string `json:"role"`
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jwt.RegisteredClaims
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}
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type Service struct {
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db *sql.DB
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jwtSecret []byte
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}
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func NewService(db *sql.DB, secret string) *Service {
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return &Service{db: db, jwtSecret: []byte(secret)}
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}
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func (s *Service) Login(email, password string) (string, error) {
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var id int64
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var hash, role string
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err := s.db.QueryRow(
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`SELECT id, password, role FROM volunteers WHERE email = ? AND active = 1`,
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email,
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).Scan(&id, &hash, &role)
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if errors.Is(err, sql.ErrNoRows) {
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return "", ErrInvalidCredentials
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}
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if err != nil {
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return "", fmt.Errorf("query volunteer: %w", err)
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}
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if err := bcrypt.CompareHashAndPassword([]byte(hash), []byte(password)); err != nil {
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return "", ErrInvalidCredentials
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}
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return s.issueToken(id, role)
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}
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func (s *Service) issueToken(volunteerID int64, role string) (string, error) {
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claims := Claims{
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VolunteerID: volunteerID,
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Role: role,
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RegisteredClaims: jwt.RegisteredClaims{
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ExpiresAt: jwt.NewNumericDate(time.Now().Add(24 * time.Hour)),
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IssuedAt: jwt.NewNumericDate(time.Now()),
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},
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}
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token := jwt.NewWithClaims(jwt.SigningMethodHS256, claims)
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return token.SignedString(s.jwtSecret)
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}
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func (s *Service) Parse(tokenStr string) (*Claims, error) {
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token, err := jwt.ParseWithClaims(tokenStr, &Claims{}, func(t *jwt.Token) (any, error) {
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if _, ok := t.Method.(*jwt.SigningMethodHMAC); !ok {
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return nil, fmt.Errorf("unexpected signing method")
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}
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return s.jwtSecret, nil
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})
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if err != nil {
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return nil, err
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}
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claims, ok := token.Claims.(*Claims)
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if !ok || !token.Valid {
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return nil, errors.New("invalid token")
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}
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return claims, nil
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}
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func HashPassword(password string) (string, error) {
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b, err := bcrypt.GenerateFromPassword([]byte(password), bcrypt.DefaultCost)
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return string(b), err
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}
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