301 lines
7.4 KiB
Go
301 lines
7.4 KiB
Go
package auth
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import (
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"bytes"
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"context"
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"crypto/rand"
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"encoding/hex"
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"encoding/json"
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"fmt"
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"io"
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"net/http"
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"strings"
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"time"
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"app_compartir/internal/config"
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"app_compartir/internal/db"
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"app_compartir/internal/models"
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"golang.org/x/oauth2"
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"golang.org/x/oauth2/google"
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)
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const (
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CookieSessionName = "compartir_session"
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)
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type AuthService struct {
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cfg *config.Config
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db *db.Database
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oauthConfig *oauth2.Config
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}
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func New(cfg *config.Config, database *db.Database) *AuthService {
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var oauthConf *oauth2.Config
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if cfg.GoogleClientID != "" && cfg.GoogleClientSecret != "" {
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oauthConf = &oauth2.Config{
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ClientID: cfg.GoogleClientID,
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ClientSecret: cfg.GoogleClientSecret,
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RedirectURL: cfg.BaseURL + "/auth/google/callback",
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Scopes: []string{
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"https://www.googleapis.com/auth/userinfo.profile",
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"https://www.googleapis.com/auth/userinfo.email",
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},
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Endpoint: google.Endpoint,
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}
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}
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return &AuthService{
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cfg: cfg,
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db: database,
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oauthConfig: oauthConf,
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}
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}
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func (a *AuthService) GenerateToken(length int) string {
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bytes := make([]byte, length)
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if _, err := rand.Read(bytes); err != nil {
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return fmt.Sprintf("%d", time.Now().UnixNano())
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}
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return hex.EncodeToString(bytes)
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}
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func (a *AuthService) GetOrCreateSession(w http.ResponseWriter, r *http.Request) *models.Session {
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cookie, err := r.Cookie(CookieSessionName)
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if err == nil && cookie.Value != "" {
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session, err := a.db.GetSession(cookie.Value)
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if err == nil && session != nil {
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return session
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}
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}
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// Crear nueva sesión de invitado (Guest)
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token := a.GenerateToken(32)
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guestID := "guest_" + a.GenerateToken(8)
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now := time.Now()
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expiresAt := now.Add(30 * 24 * time.Hour) // La cookie de sesión dura 30 días, pero los archivos del guest expiran en 24h
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session := &models.Session{
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Token: token,
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UserID: nil,
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IsGuest: true,
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GuestID: guestID,
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CreatedAt: now,
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ExpiresAt: expiresAt,
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}
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if err := a.db.CreateSession(session); err != nil {
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return session
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}
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http.SetCookie(w, &http.Cookie{
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Name: CookieSessionName,
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Value: token,
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Path: "/",
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Expires: expiresAt,
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HttpOnly: true,
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SameSite: http.SameSiteLaxMode,
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})
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return session
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}
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func (a *AuthService) AttachUserToSession(w http.ResponseWriter, r *http.Request, user *models.User) error {
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token := a.GenerateToken(32)
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now := time.Now()
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expiresAt := now.Add(30 * 24 * time.Hour)
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session := &models.Session{
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Token: token,
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UserID: &user.ID,
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IsGuest: false,
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GuestID: "",
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CreatedAt: now,
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ExpiresAt: expiresAt,
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User: user,
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}
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if err := a.db.CreateSession(session); err != nil {
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return err
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}
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http.SetCookie(w, &http.Cookie{
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Name: CookieSessionName,
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Value: token,
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Path: "/",
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Expires: expiresAt,
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HttpOnly: true,
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SameSite: http.SameSiteLaxMode,
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})
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return nil
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}
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func (a *AuthService) Logout(w http.ResponseWriter, r *http.Request) {
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if cookie, err := r.Cookie(CookieSessionName); err == nil && cookie.Value != "" {
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_ = a.db.DeleteSession(cookie.Value)
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}
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http.SetCookie(w, &http.Cookie{
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Name: CookieSessionName,
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Value: "",
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Path: "/",
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Expires: time.Unix(0, 0),
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MaxAge: -1,
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HttpOnly: true,
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})
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}
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// LoginWebControl realiza autenticación con WebControl de Telcotronics
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func (a *AuthService) LoginWebControl(email, password string) (*models.User, error) {
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baseURL := strings.TrimRight(a.cfg.WebControlURL, "/")
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// 1. Consultar empresas disponibles para el usuario
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empresasURL := baseURL + "/api/auth/empresas"
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empReqBody, _ := json.Marshal(map[string]string{
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"email": email,
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"paswd": password,
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})
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client := &http.Client{Timeout: 8 * time.Second}
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resp, err := client.Post(empresasURL, "application/json", bytes.NewBuffer(empReqBody))
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dba := ""
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if err == nil && resp.StatusCode == http.StatusOK {
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var empData struct {
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Empresas []struct {
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DBA string `json:"dba"`
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Nombre string `json:"nombre"`
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} `json:"empresas"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&empData); err == nil && len(empData.Empresas) > 0 {
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dba = empData.Empresas[0].DBA
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}
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resp.Body.Close()
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}
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// 2. Realizar login final
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loginURL := baseURL + "/api/auth/login"
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loginPayload := map[string]string{
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"email": email,
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"paswd": password,
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}
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if dba != "" {
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loginPayload["dba"] = dba
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}
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loginBody, _ := json.Marshal(loginPayload)
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loginResp, err := client.Post(loginURL, "application/json", bytes.NewBuffer(loginBody))
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if err != nil {
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return nil, fmt.Errorf("error conectando con WebControl: %w", err)
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}
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defer loginResp.Body.Close()
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if loginResp.StatusCode != http.StatusOK {
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bodyBytes, _ := io.ReadAll(loginResp.Body)
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return nil, fmt.Errorf("credenciales inválidas en WebControl (status %d): %s", loginResp.StatusCode, string(bodyBytes))
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}
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var res struct {
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Token string `json:"token"`
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APIKey string `json:"apiKey"`
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Usuario struct {
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ID interface{} `json:"id"`
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Nombre string `json:"nombre"`
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Email string `json:"email"`
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} `json:"usuario"`
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}
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if err := json.NewDecoder(loginResp.Body).Decode(&res); err != nil {
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return nil, fmt.Errorf("error interpretando respuesta de WebControl: %w", err)
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}
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userIDStr := fmt.Sprintf("wc_%v", res.Usuario.ID)
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if res.Usuario.ID == nil || userIDStr == "wc_<nil>" {
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userIDStr = "wc_" + a.GenerateToken(8)
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}
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userName := res.Usuario.Nombre
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if userName == "" {
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userName = strings.Split(email, "@")[0]
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}
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userEmail := res.Usuario.Email
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if userEmail == "" {
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userEmail = email
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}
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user := &models.User{
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ID: userIDStr,
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Provider: "webcontrol",
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ProviderID: fmt.Sprintf("%v", res.Usuario.ID),
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Email: userEmail,
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Name: userName,
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AvatarURL: "",
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CreatedAt: time.Now(),
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}
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if err := a.db.UpsertUser(user); err != nil {
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return nil, fmt.Errorf("error guardando usuario en base de datos: %w", err)
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}
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return user, nil
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}
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// Google OAuth
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func (a *AuthService) GetGoogleAuthURL(state string) (string, error) {
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if a.oauthConfig == nil {
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return "", fmt.Errorf("Google OAuth no está configurado (faltan GOOGLE_CLIENT_ID / GOOGLE_CLIENT_SECRET)")
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}
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return a.oauthConfig.AuthCodeURL(state, oauth2.AccessTypeOffline), nil
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}
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func (a *AuthService) HandleGoogleCallback(ctx context.Context, code string) (*models.User, error) {
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if a.oauthConfig == nil {
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return nil, fmt.Errorf("Google OAuth no está configurado")
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}
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token, err := a.oauthConfig.Exchange(ctx, code)
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if err != nil {
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return nil, fmt.Errorf("error intercambiando código OAuth: %w", err)
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}
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client := a.oauthConfig.Client(ctx, token)
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resp, err := client.Get("https://www.googleapis.com/oauth2/v2/userinfo")
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if err != nil {
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return nil, fmt.Errorf("error obteniendo perfil de Google: %w", err)
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}
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defer resp.Body.Close()
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var gUser struct {
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ID string `json:"id"`
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Email string `json:"email"`
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Name string `json:"name"`
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Picture string `json:"picture"`
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}
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if err := json.NewDecoder(resp.Body).Decode(&gUser); err != nil {
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return nil, fmt.Errorf("error leyendo perfil de Google: %w", err)
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}
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userID := "google_" + gUser.ID
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user := &models.User{
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ID: userID,
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Provider: "google",
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ProviderID: gUser.ID,
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Email: gUser.Email,
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Name: gUser.Name,
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AvatarURL: gUser.Picture,
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CreatedAt: time.Now(),
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}
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if err := a.db.UpsertUser(user); err != nil {
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return nil, fmt.Errorf("error guardando usuario de Google: %w", err)
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}
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return user, nil
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}
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func (a *AuthService) HasGoogleConfigured() bool {
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return a.oauthConfig != nil
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}
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