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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,4 +1,6 @@ | ||
| github.com/lib/pq v1.10.9 h1:YXG7RB+JIjhP29X+OtkiDnYaXQwpS4JEWq7dtCCRUEw= | ||
| github.com/lib/pq v1.10.9/go.mod h1:AlVN5x4E4T544tWzH6hKfbfQvm3HdbOxrmggDNAPY9o= | ||
| golang.org/x/crypto v0.18.0 h1:PGVlW0xEltQnzFZ55hkuX5+KLyrMYhHld1YHO4AKcdc= | ||
| golang.org/x/crypto v0.18.0/go.mod h1:R0j02AL6hcrfOiy9T4ZYp/rcWeMxM3L6QYxlOuEG1mg= | ||
| golang.org/x/time v0.5.0 h1:o7cqy6amK/52YcAKIPlM3a+Fpj35zvRj2TP+e1xFSfk= | ||
| golang.org/x/time v0.5.0/go.mod h1:3BpzKBy/shNhVucY/MWOyx10tF3SFh9QdLuxbVysPQM= |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| package greenlight | ||
|
|
||
| import ( | ||
| "context" | ||
| "errors" | ||
| "fmt" | ||
| "net/mail" | ||
| "unicode/utf8" | ||
|
|
||
| "golang.org/x/crypto/bcrypt" | ||
| ) | ||
|
|
||
| // User represents a user. | ||
| type User struct { | ||
| ID int64 `json:"id"` | ||
| Name string `json:"name"` | ||
| Email string `json:"email"` | ||
| Password Password `json:"-"` | ||
| Activated bool `json:"activated"` | ||
| Version int `json:"-"` | ||
| } | ||
|
|
||
| // Valid returns an error if the validation fails, otherwise nil. | ||
| func (u *User) Valid() error { | ||
| err := NewInvalidError("User is invalid.") | ||
|
|
||
| if u.ID < 0 { | ||
| err.AddViolationMsg("ID", "Must be greater or equal to 0.") | ||
| } | ||
|
|
||
| if u.Name == "" { | ||
| err.AddViolationMsg("Name", "Must be provided.") | ||
| } | ||
| if utf8.RuneCount([]byte(u.Name)) > 500 { | ||
| err.AddViolationMsg("Name", "Must not be more than 500 characters long.") | ||
| } | ||
|
|
||
| if u.Email == "" { | ||
| err.AddViolationMsg("Email", "Must be provided.") | ||
| } | ||
| if _, e := mail.ParseAddress(u.Email); e != nil { | ||
| err.AddViolationMsg("Email", "Is invalid.") | ||
| } | ||
|
|
||
| if len(u.Password) == 0 { | ||
| err.AddViolationMsg("Password", "Must be provided.") | ||
| } | ||
|
|
||
| if len(err.violations) != 0 { | ||
| return err | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| // Password represents a hash of the user password. | ||
| type Password []byte | ||
|
|
||
| // NewPasswords generates a hashed password from the plaintext password. | ||
| func NewPassword(plaintext string) (Password, error) { | ||
| op := "greenlight.NewPassword" | ||
|
|
||
| hash, err := bcrypt.GenerateFromPassword([]byte(plaintext), 12) | ||
| if err != nil { | ||
| return nil, fmt.Errorf("%s: %w", op, err) | ||
| } | ||
| return hash, nil | ||
| } | ||
|
|
||
| // Matches tests whether the provided plaintext password matches the hashed password. | ||
| func (p *Password) Matches(plaintext string) (bool, error) { | ||
| op := "greenlight.password.Matches" | ||
|
|
||
| if err := bcrypt.CompareHashAndPassword(*p, []byte(plaintext)); err != nil { | ||
| switch { | ||
| case errors.Is(err, bcrypt.ErrMismatchedHashAndPassword): | ||
| return false, nil | ||
| default: | ||
| return false, fmt.Errorf("%s: %w", op, err) | ||
| } | ||
| } | ||
| return true, nil | ||
| } | ||
|
|
||
| // UserService is a service for managing users. | ||
| type UserService interface { | ||
| Get(ctx context.Context, email string) (*User, error) | ||
| Create(ctx context.Context, u *User) error | ||
| Update(ctx context.Context, u *User) error | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,77 @@ | ||
| package http | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "net/http" | ||
|
|
||
| "github.com/denpeshkov/greenlight/internal/greenlight" | ||
| ) | ||
|
|
||
| func (s *Server) registerUserHandlers() { | ||
| s.router.HandleFunc("POST /v1/users", s.handleUserCreate) | ||
| } | ||
|
|
||
| // handleUserCreate handles requests to create (register) a user. | ||
| func (s *Server) handleUserCreate(w http.ResponseWriter, r *http.Request) { | ||
| op := "http.Server.handleUserCreate" | ||
|
|
||
| var req struct { | ||
| Name string `json:"name"` | ||
| Email string `json:"email"` | ||
| Password string `json:"password"` | ||
| } | ||
| if err := s.readRequest(w, r, &req); err != nil { | ||
| s.Error(w, r, fmt.Errorf("%s: %w", op, err)) | ||
| return | ||
| } | ||
|
|
||
| err := greenlight.NewInvalidError("User is invalid.") | ||
| if req.Password == "" { | ||
| err.AddViolationMsg("Password", "Must be provided.") | ||
| } | ||
| if len(req.Password) < 8 { | ||
| err.AddViolationMsg("Password", "Must be at least 8 characters long.") | ||
| } | ||
| if len(req.Password) > 72 { | ||
| err.AddViolationMsg("Password", "Must not be more than 72 bytes long.") | ||
| } | ||
| if len(err.Violations()) != 0 { | ||
| s.Error(w, r, err) | ||
| return | ||
| } | ||
|
|
||
| u := &greenlight.User{ | ||
| Name: req.Name, | ||
| Email: req.Email, | ||
| Activated: false, | ||
| } | ||
| pass, errPas := greenlight.NewPassword(req.Password) | ||
| if errPas != nil { | ||
| s.Error(w, r, fmt.Errorf("%s: %w", op, err)) | ||
| } | ||
| u.Password = pass | ||
|
|
||
| if err := u.Valid(); err != nil { | ||
| s.Error(w, r, err) | ||
| return | ||
| } | ||
| if err := s.UserService.Create(r.Context(), u); err != nil { | ||
| s.Error(w, r, fmt.Errorf("%s: %w", op, err)) | ||
| return | ||
| } | ||
|
|
||
| resp := struct { | ||
| ID int64 `json:"id"` | ||
| Name string `json:"name"` | ||
| Email string `json:"email"` | ||
| }{ | ||
| ID: u.ID, | ||
| Name: u.Name, | ||
| Email: u.Email, | ||
| } | ||
|
|
||
| if err := s.sendResponse(w, r, http.StatusCreated, resp, nil); err != nil { | ||
| s.Error(w, r, fmt.Errorf("%s: %w", op, err)) | ||
| return | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| DROP TABLE IF EXISTS users; |
10 changes: 10 additions & 0 deletions
10
internal/postgres/migrations/005_create_users_table.up.sql
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,10 @@ | ||
| CREATE EXTENSION IF NOT EXISTS citext; | ||
|
|
||
| CREATE TABLE IF NOT EXISTS users ( | ||
| id bigserial PRIMARY KEY, | ||
| name text NOT NULL, | ||
| email citext UNIQUE NOT NULL, | ||
| password_hash bytea NOT NULL, | ||
| activated bool NOT NULL, | ||
| version integer NOT NULL DEFAULT 1 | ||
| ); |
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