Updated qr code events and tls server

pkg/config/config.go

@@ -18,12 +18,30 @@ type Config struct {
 
 // ServerConfig holds server-specific configuration
 type ServerConfig struct {
-	Host               string `json:"host"`
-	Port               int    `json:"port"`
-	DefaultCountryCode string `json:"default_country_code,omitempty"`
-	Username           string `json:"username,omitempty"`
-	Password           string `json:"password,omitempty"`
-	AuthKey            string `json:"auth_key,omitempty"`
+	Host               string    `json:"host"`
+	Port               int       `json:"port"`
+	DefaultCountryCode string    `json:"default_country_code,omitempty"`
+	Username           string    `json:"username,omitempty"`
+	Password           string    `json:"password,omitempty"`
+	AuthKey            string    `json:"auth_key,omitempty"`
+	TLS                TLSConfig `json:"tls,omitempty"`
+}
+
+// TLSConfig holds TLS/HTTPS configuration
+type TLSConfig struct {
+	Enabled  bool   `json:"enabled"`           // Enable HTTPS
+	Mode     string `json:"mode"`              // "self-signed", "custom", or "autocert"
+	CertFile string `json:"cert_file,omitempty"` // Path to certificate file (for custom mode)
+	KeyFile  string `json:"key_file,omitempty"`  // Path to key file (for custom mode)
+
+	// Self-signed certificate options
+	CertDir string `json:"cert_dir,omitempty"` // Directory to store generated certificates
+
+	// Let's Encrypt / autocert options
+	Domain     string `json:"domain,omitempty"`      // Domain name for Let's Encrypt
+	Email      string `json:"email,omitempty"`       // Email for Let's Encrypt notifications
+	CacheDir   string `json:"cache_dir,omitempty"`   // Cache directory for autocert
+	Production bool   `json:"production,omitempty"`  // Use Let's Encrypt production (default: staging)
 }
 
 // WhatsAppConfig holds configuration for a WhatsApp account
@@ -139,6 +157,19 @@ func Load(path string) (*Config, error) {
 		}
 	}
 
+	// Set TLS defaults if enabled
+	if cfg.Server.TLS.Enabled {
+		if cfg.Server.TLS.Mode == "" {
+			cfg.Server.TLS.Mode = "self-signed"
+		}
+		if cfg.Server.TLS.CertDir == "" {
+			cfg.Server.TLS.CertDir = "./data/certs"
+		}
+		if cfg.Server.TLS.CacheDir == "" {
+			cfg.Server.TLS.CacheDir = "./data/autocert"
+		}
+	}
+
 	return &cfg, nil
 }
 

pkg/events/builders.go

@@ -37,10 +37,11 @@ func WhatsAppPairFailedEvent(ctx context.Context, accountID string, err error) E
 }
 
 // WhatsAppQRCodeEvent creates a WhatsApp QR code event
-func WhatsAppQRCodeEvent(ctx context.Context, accountID string, qrCode string) Event {
+func WhatsAppQRCodeEvent(ctx context.Context, accountID string, qrCode string, qrURL string) Event {
 	return NewEvent(ctx, EventWhatsAppQRCode, map[string]any{
 		"account_id": accountID,
 		"qr_code":    qrCode,
+		"qr_url":     qrURL,
 	})
 }
 

pkg/handlers/qr.go

@@ -0,0 +1,57 @@
+package handlers
+
+import (
+	"net/http"
+
+	"git.warky.dev/wdevs/whatshooked/pkg/logging"
+	"git.warky.dev/wdevs/whatshooked/pkg/whatsapp/whatsmeow"
+)
+
+// ServeQRCode serves the QR code image for a WhatsApp account
+func (h *Handlers) ServeQRCode(w http.ResponseWriter, r *http.Request) {
+	// Expected path format: /api/qr/{accountID}
+	path := r.URL.Path[len("/api/qr/"):]
+	accountID := path
+
+	if accountID == "" {
+		http.Error(w, "Invalid QR code path", http.StatusBadRequest)
+		return
+	}
+
+	// Get client from manager
+	client, exists := h.whatsappMgr.GetClient(accountID)
+	if !exists {
+		http.Error(w, "Account not found", http.StatusNotFound)
+		return
+	}
+
+	// Type assert to whatsmeow client (only whatsmeow clients have QR codes)
+	whatsmeowClient, ok := client.(*whatsmeow.Client)
+	if !ok {
+		http.Error(w, "QR codes are only available for whatsmeow clients", http.StatusBadRequest)
+		logging.Warn("QR code requested for non-whatsmeow client", "account_id", accountID)
+		return
+	}
+
+	// Get QR code PNG
+	pngData, err := whatsmeowClient.GetQRCodePNG()
+	if err != nil {
+		if err.Error() == "no QR code available" {
+			http.Error(w, "No QR code available. The account may already be connected or pairing has not started yet.", http.StatusNotFound)
+		} else {
+			logging.Error("Failed to generate QR code PNG", "account_id", accountID, "error", err)
+			http.Error(w, "Failed to generate QR code", http.StatusInternalServerError)
+		}
+		return
+	}
+
+	// Set headers
+	w.Header().Set("Content-Type", "image/png")
+	w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+	w.Header().Set("Pragma", "no-cache")
+	w.Header().Set("Expires", "0")
+
+	// Write PNG data
+	writeBytes(w, pngData)
+	logging.Debug("QR code served", "account_id", accountID)
+}

pkg/logging/logging.go

@@ -1,6 +1,9 @@
 package logging
 
-import "log/slog"
+import (
+	"log/slog"
+	"os"
+)
 
 // Logger interface allows users to plug in their own logger
 type Logger interface {
@@ -33,7 +36,7 @@ func Init(level string) {
 		slogLevel = slog.LevelInfo
 	}
 
-	handler := slog.NewTextHandler(nil, &slog.HandlerOptions{
+	handler := slog.NewTextHandler(os.Stdout, &slog.HandlerOptions{
 		Level: slogLevel,
 	})
 	defaultLogger = &slogLogger{logger: slog.New(handler)}

pkg/utils/tls.go

@@ -0,0 +1,207 @@
+package utils
+
+import (
+	"crypto/ecdsa"
+	"crypto/elliptic"
+	"crypto/rand"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"fmt"
+	"math/big"
+	"net"
+	"os"
+	"path/filepath"
+	"time"
+)
+
+const (
+	certFileName = "cert.pem"
+	keyFileName  = "key.pem"
+)
+
+// GenerateSelfSignedCert generates a self-signed TLS certificate
+func GenerateSelfSignedCert(certDir, host string) (certPath, keyPath string, err error) {
+	// Create cert directory if it doesn't exist
+	if err := os.MkdirAll(certDir, 0755); err != nil {
+		return "", "", fmt.Errorf("failed to create cert directory: %w", err)
+	}
+
+	certPath = filepath.Join(certDir, certFileName)
+	keyPath = filepath.Join(certDir, keyFileName)
+
+	// Check if certificate already exists and is valid
+	if certExists(certPath, keyPath) {
+		if isCertValid(certPath) {
+			return certPath, keyPath, nil
+		}
+		// Certificate exists but is invalid/expired, regenerate
+	}
+
+	// Generate private key using ECDSA P-256
+	privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to generate private key: %w", err)
+	}
+
+	// Generate serial number
+	serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
+	serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to generate serial number: %w", err)
+	}
+
+	// Create certificate template
+	notBefore := time.Now()
+	notAfter := notBefore.Add(365 * 24 * time.Hour) // Valid for 1 year
+
+	template := x509.Certificate{
+		SerialNumber: serialNumber,
+		Subject: pkix.Name{
+			Organization: []string{"WhatsHooked Self-Signed"},
+			CommonName:   host,
+		},
+		NotBefore:             notBefore,
+		NotAfter:              notAfter,
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+	}
+
+	// Add host as SAN (Subject Alternative Name)
+	if ip := net.ParseIP(host); ip != nil {
+		template.IPAddresses = append(template.IPAddresses, ip)
+	} else {
+		template.DNSNames = append(template.DNSNames, host)
+	}
+
+	// Add localhost and common IPs as SANs
+	template.DNSNames = append(template.DNSNames, "localhost")
+	template.IPAddresses = append(template.IPAddresses,
+		net.ParseIP("127.0.0.1"),
+		net.ParseIP("::1"),
+	)
+
+	// Create self-signed certificate
+	derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &privateKey.PublicKey, privateKey)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to create certificate: %w", err)
+	}
+
+	// Write certificate to file
+	certFile, err := os.Create(certPath)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to create cert file: %w", err)
+	}
+	defer certFile.Close()
+
+	if err := pem.Encode(certFile, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes}); err != nil {
+		return "", "", fmt.Errorf("failed to write cert file: %w", err)
+	}
+
+	// Write private key to file
+	keyFile, err := os.Create(keyPath)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to create key file: %w", err)
+	}
+	defer keyFile.Close()
+
+	privBytes, err := x509.MarshalECPrivateKey(privateKey)
+	if err != nil {
+		return "", "", fmt.Errorf("failed to marshal private key: %w", err)
+	}
+
+	if err := pem.Encode(keyFile, &pem.Block{Type: "EC PRIVATE KEY", Bytes: privBytes}); err != nil {
+		return "", "", fmt.Errorf("failed to write key file: %w", err)
+	}
+
+	return certPath, keyPath, nil
+}
+
+// certExists checks if both certificate and key files exist
+func certExists(certPath, keyPath string) bool {
+	_, certErr := os.Stat(certPath)
+	_, keyErr := os.Stat(keyPath)
+	return certErr == nil && keyErr == nil
+}
+
+// isCertValid checks if a certificate file is valid and not expired
+func isCertValid(certPath string) bool {
+	certPEM, err := os.ReadFile(certPath)
+	if err != nil {
+		return false
+	}
+
+	block, _ := pem.Decode(certPEM)
+	if block == nil {
+		return false
+	}
+
+	cert, err := x509.ParseCertificate(block.Bytes)
+	if err != nil {
+		return false
+	}
+
+	// Check if certificate is expired or will expire in the next 30 days
+	now := time.Now()
+	if now.Before(cert.NotBefore) || now.After(cert.NotAfter) {
+		return false
+	}
+
+	// Regenerate if expiring within 30 days
+	if cert.NotAfter.Sub(now) < 30*24*time.Hour {
+		return false
+	}
+
+	return true
+}
+
+// ValidateCertificateFiles checks if custom certificate files exist and are valid
+func ValidateCertificateFiles(certPath, keyPath string) error {
+	// Check if files exist
+	if _, err := os.Stat(certPath); err != nil {
+		return fmt.Errorf("certificate file not found: %w", err)
+	}
+	if _, err := os.Stat(keyPath); err != nil {
+		return fmt.Errorf("key file not found: %w", err)
+	}
+
+	// Try to load the certificate to validate it
+	certPEM, err := os.ReadFile(certPath)
+	if err != nil {
+		return fmt.Errorf("failed to read certificate: %w", err)
+	}
+
+	keyPEM, err := os.ReadFile(keyPath)
+	if err != nil {
+		return fmt.Errorf("failed to read key: %w", err)
+	}
+
+	// Decode certificate
+	certBlock, _ := pem.Decode(certPEM)
+	if certBlock == nil {
+		return fmt.Errorf("failed to decode certificate PEM")
+	}
+
+	_, err = x509.ParseCertificate(certBlock.Bytes)
+	if err != nil {
+		return fmt.Errorf("failed to parse certificate: %w", err)
+	}
+
+	// Decode key
+	keyBlock, _ := pem.Decode(keyPEM)
+	if keyBlock == nil {
+		return fmt.Errorf("failed to decode key PEM")
+	}
+
+	// Try parsing as different key types
+	if _, err := x509.ParseECPrivateKey(keyBlock.Bytes); err != nil {
+		if _, err := x509.ParsePKCS1PrivateKey(keyBlock.Bytes); err != nil {
+			if _, err := x509.ParsePKCS8PrivateKey(keyBlock.Bytes); err != nil {
+				return fmt.Errorf("failed to parse private key (tried EC, PKCS1, PKCS8): %w", err)
+			}
+		}
+	}
+
+	return nil
+}

pkg/whatsapp/whatsmeow/client.go

@@ -1,13 +1,17 @@
 package whatsmeow
 
 import (
+	"bytes"
 	"context"
 	"crypto/sha256"
 	"encoding/base64"
 	"encoding/hex"
 	"fmt"
+	"image"
+	"image/png"
 	"os"
 	"path/filepath"
+	"sync"
 	"time"
 
 	"git.warky.dev/wdevs/whatshooked/pkg/config"
@@ -22,6 +26,7 @@ import (
 	waEvents "go.mau.fi/whatsmeow/types/events"
 	waLog "go.mau.fi/whatsmeow/util/log"
 	"google.golang.org/protobuf/proto"
+	"rsc.io/qr"
 
 	_ "github.com/mattn/go-sqlite3"
 )
@@ -37,6 +42,8 @@ type Client struct {
 	mediaConfig     config.MediaConfig
 	showQR          bool
 	keepAliveCancel context.CancelFunc
+	qrCode          string
+	qrCodeMutex     sync.RWMutex
 }
 
 // NewClient creates a new whatsmeow client
@@ -111,17 +118,28 @@ func (c *Client) Connect(ctx context.Context) error {
 			case "code":
 				logging.Info("QR code received for pairing", "account_id", c.id)
 
+				// Store QR code
+				c.qrCodeMutex.Lock()
+				c.qrCode = evt.Code
+				c.qrCodeMutex.Unlock()
+
+				// Generate QR code URL
+				qrURL := c.generateQRCodeURL()
+
 				// Display QR code in terminal
 				fmt.Println("\n========================================")
 				fmt.Printf("WhatsApp QR Code for account: %s\n", c.id)
 				fmt.Printf("Phone: %s\n", c.phoneNumber)
 				fmt.Println("========================================")
 				fmt.Println("Scan this QR code with WhatsApp on your phone:")
+				fmt.Println()
 				qrterminal.GenerateHalfBlock(evt.Code, qrterminal.L, os.Stdout)
+				fmt.Println()
+				fmt.Printf("Or open in browser: %s\n", qrURL)
 				fmt.Println("========================================")
 
-				// Publish QR code event
-				c.eventBus.Publish(events.WhatsAppQRCodeEvent(ctx, c.id, evt.Code))
+				// Publish QR code event with URL
+				c.eventBus.Publish(events.WhatsAppQRCodeEvent(ctx, c.id, evt.Code, qrURL))
 
 			case "success":
 				logging.Info("Pairing successful", "account_id", c.id, "phone", c.phoneNumber)
@@ -675,3 +693,59 @@ func getExtensionFromMimeType(mimeType string) string {
 	}
 	return ""
 }
+
+// generateQRCodeURL generates a URL for accessing the QR code
+func (c *Client) generateQRCodeURL() string {
+	baseURL := c.mediaConfig.BaseURL
+	if baseURL == "" {
+		baseURL = "http://localhost:8080"
+	}
+	return fmt.Sprintf("%s/api/qr/%s", baseURL, c.id)
+}
+
+// GetQRCodePNG generates a PNG image of the current QR code
+func (c *Client) GetQRCodePNG() ([]byte, error) {
+	c.qrCodeMutex.RLock()
+	qrCodeData := c.qrCode
+	c.qrCodeMutex.RUnlock()
+
+	if qrCodeData == "" {
+		return nil, fmt.Errorf("no QR code available")
+	}
+
+	// Generate QR code using rsc.io/qr
+	code, err := qr.Encode(qrCodeData, qr.L)
+	if err != nil {
+		return nil, fmt.Errorf("failed to encode QR code: %w", err)
+	}
+
+	// Scale the QR code for better visibility (8x scale)
+	img := code.Image()
+	scale := 8
+	bounds := img.Bounds()
+	scaledWidth := bounds.Dx() * scale
+	scaledHeight := bounds.Dy() * scale
+
+	// Create a new image with scaled dimensions
+	scaledImg := image.NewRGBA(image.Rect(0, 0, scaledWidth, scaledHeight))
+
+	// Scale the image
+	for y := 0; y < bounds.Dy(); y++ {
+		for x := 0; x < bounds.Dx(); x++ {
+			pixel := img.At(x, y)
+			for sy := 0; sy < scale; sy++ {
+				for sx := 0; sx < scale; sx++ {
+					scaledImg.Set(x*scale+sx, y*scale+sy, pixel)
+				}
+			}
+		}
+	}
+
+	// Encode to PNG
+	var buf bytes.Buffer
+	if err := png.Encode(&buf, scaledImg); err != nil {
+		return nil, fmt.Errorf("failed to encode PNG: %w", err)
+	}
+
+	return buf.Bytes(), nil
+}

pkg/whatshooked/options.go

@@ -131,3 +131,48 @@ func WithSQLiteDatabase(sqlitePath string) Option {
 		c.Database.SQLitePath = sqlitePath
 	}
 }
+
+// WithTLS configures TLS settings
+func WithTLS(enabled bool, mode string) Option {
+	return func(c *config.Config) {
+		c.Server.TLS.Enabled = enabled
+		c.Server.TLS.Mode = mode
+	}
+}
+
+// WithTLSConfig configures TLS with full config
+func WithTLSConfig(cfg config.TLSConfig) Option {
+	return func(c *config.Config) {
+		c.Server.TLS = cfg
+	}
+}
+
+// WithSelfSignedTLS enables HTTPS with self-signed certificates
+func WithSelfSignedTLS(certDir string) Option {
+	return func(c *config.Config) {
+		c.Server.TLS.Enabled = true
+		c.Server.TLS.Mode = "self-signed"
+		c.Server.TLS.CertDir = certDir
+	}
+}
+
+// WithCustomTLS enables HTTPS with custom certificate files
+func WithCustomTLS(certFile, keyFile string) Option {
+	return func(c *config.Config) {
+		c.Server.TLS.Enabled = true
+		c.Server.TLS.Mode = "custom"
+		c.Server.TLS.CertFile = certFile
+		c.Server.TLS.KeyFile = keyFile
+	}
+}
+
+// WithAutocertTLS enables HTTPS with Let's Encrypt autocert
+func WithAutocertTLS(domain, email string, production bool) Option {
+	return func(c *config.Config) {
+		c.Server.TLS.Enabled = true
+		c.Server.TLS.Mode = "autocert"
+		c.Server.TLS.Domain = domain
+		c.Server.TLS.Email = email
+		c.Server.TLS.Production = production
+	}
+}

pkg/whatshooked/server.go

@@ -2,15 +2,18 @@ package whatshooked
 
 import (
 	"context"
+	"crypto/tls"
 	"fmt"
 	"net/http"
 	"time"
 
+	"git.warky.dev/wdevs/whatshooked/pkg/config"
 	"git.warky.dev/wdevs/whatshooked/pkg/events"
 	"git.warky.dev/wdevs/whatshooked/pkg/hooks"
 	"git.warky.dev/wdevs/whatshooked/pkg/logging"
 	"git.warky.dev/wdevs/whatshooked/pkg/utils"
 	"go.mau.fi/whatsmeow/types"
+	"golang.org/x/crypto/acme/autocert"
 )
 
 // Server is the optional built-in HTTP server
@@ -26,7 +29,7 @@ func NewServer(wh *WhatsHooked) *Server {
 	}
 }
 
-// Start starts the HTTP server
+// Start starts the HTTP/HTTPS server
 func (s *Server) Start() error {
 	// Subscribe to hook success events for two-way communication
 	s.wh.EventBus().Subscribe(events.EventHookSuccess, s.handleHookResponse)
@@ -40,20 +43,25 @@ func (s *Server) Start() error {
 		Handler: mux,
 	}
 
-	logging.Info("Starting HTTP server",
-		"host", s.wh.config.Server.Host,
-		"port", s.wh.config.Server.Port,
-		"address", addr)
-
-	// Connect to WhatsApp accounts
+	// Connect to WhatsApp accounts after server starts
 	go func() {
-		time.Sleep(100 * time.Millisecond) // Give HTTP server a moment to start
-		logging.Info("HTTP server ready, connecting to WhatsApp accounts")
+		time.Sleep(100 * time.Millisecond) // Give server a moment to start
+		logging.Info("Server ready, connecting to WhatsApp accounts")
 		if err := s.wh.ConnectAll(context.Background()); err != nil {
 			logging.Error("Failed to connect to WhatsApp accounts", "error", err)
 		}
 	}()
 
+	// Start server with or without TLS
+	if s.wh.config.Server.TLS.Enabled {
+		return s.startTLS()
+	}
+
+	logging.Info("Starting HTTP server",
+		"host", s.wh.config.Server.Host,
+		"port", s.wh.config.Server.Port,
+		"address", addr)
+
 	// Start server (blocking)
 	if err := s.httpServer.ListenAndServe(); err != nil && err != http.ErrServerClosed {
 		return err
@@ -62,6 +70,127 @@ func (s *Server) Start() error {
 	return nil
 }
 
+// startTLS starts the server with TLS based on the configured mode
+func (s *Server) startTLS() error {
+	tlsConfig := &s.wh.config.Server.TLS
+	addr := fmt.Sprintf("%s:%d", s.wh.config.Server.Host, s.wh.config.Server.Port)
+
+	switch tlsConfig.Mode {
+	case "self-signed":
+		return s.startSelfSignedTLS(tlsConfig, addr)
+	case "custom":
+		return s.startCustomTLS(tlsConfig, addr)
+	case "autocert":
+		return s.startAutocertTLS(tlsConfig, addr)
+	default:
+		return fmt.Errorf("invalid TLS mode: %s (must be 'self-signed', 'custom', or 'autocert')", tlsConfig.Mode)
+	}
+}
+
+// startSelfSignedTLS starts the server with a self-signed certificate
+func (s *Server) startSelfSignedTLS(tlsConfig *config.TLSConfig, addr string) error {
+	logging.Info("Generating/loading self-signed certificate",
+		"cert_dir", tlsConfig.CertDir,
+		"host", s.wh.config.Server.Host)
+
+	certPath, keyPath, err := utils.GenerateSelfSignedCert(tlsConfig.CertDir, s.wh.config.Server.Host)
+	if err != nil {
+		return fmt.Errorf("failed to generate self-signed certificate: %w", err)
+	}
+
+	logging.Info("Starting HTTPS server with self-signed certificate",
+		"host", s.wh.config.Server.Host,
+		"port", s.wh.config.Server.Port,
+		"address", addr,
+		"cert", certPath,
+		"key", keyPath)
+
+	if err := s.httpServer.ListenAndServeTLS(certPath, keyPath); err != nil && err != http.ErrServerClosed {
+		return err
+	}
+
+	return nil
+}
+
+// startCustomTLS starts the server with custom certificate files
+func (s *Server) startCustomTLS(tlsConfig *config.TLSConfig, addr string) error {
+	if tlsConfig.CertFile == "" || tlsConfig.KeyFile == "" {
+		return fmt.Errorf("custom TLS mode requires cert_file and key_file to be specified")
+	}
+
+	logging.Info("Validating custom TLS certificates",
+		"cert", tlsConfig.CertFile,
+		"key", tlsConfig.KeyFile)
+
+	// Validate certificate files
+	if err := utils.ValidateCertificateFiles(tlsConfig.CertFile, tlsConfig.KeyFile); err != nil {
+		return fmt.Errorf("invalid certificate files: %w", err)
+	}
+
+	logging.Info("Starting HTTPS server with custom certificate",
+		"host", s.wh.config.Server.Host,
+		"port", s.wh.config.Server.Port,
+		"address", addr,
+		"cert", tlsConfig.CertFile,
+		"key", tlsConfig.KeyFile)
+
+	if err := s.httpServer.ListenAndServeTLS(tlsConfig.CertFile, tlsConfig.KeyFile); err != nil && err != http.ErrServerClosed {
+		return err
+	}
+
+	return nil
+}
+
+// startAutocertTLS starts the server with Let's Encrypt autocert
+func (s *Server) startAutocertTLS(tlsConfig *config.TLSConfig, addr string) error {
+	if tlsConfig.Domain == "" {
+		return fmt.Errorf("autocert mode requires domain to be specified")
+	}
+
+	logging.Info("Setting up Let's Encrypt autocert",
+		"domain", tlsConfig.Domain,
+		"email", tlsConfig.Email,
+		"cache_dir", tlsConfig.CacheDir,
+		"production", tlsConfig.Production)
+
+	// Create autocert manager
+	certManager := &autocert.Manager{
+		Prompt:      autocert.AcceptTOS,
+		HostPolicy:  autocert.HostWhitelist(tlsConfig.Domain),
+		Cache:       autocert.DirCache(tlsConfig.CacheDir),
+		Email:       tlsConfig.Email,
+	}
+
+	// Configure TLS
+	s.httpServer.TLSConfig = &tls.Config{
+		GetCertificate: certManager.GetCertificate,
+		MinVersion:     tls.VersionTLS12,
+	}
+
+	// Start HTTP-01 challenge server on port 80 if we're listening on 443
+	if s.wh.config.Server.Port == 443 {
+		go func() {
+			httpAddr := fmt.Sprintf("%s:80", s.wh.config.Server.Host)
+			logging.Info("Starting HTTP server for ACME challenges", "address", httpAddr)
+			if err := http.ListenAndServe(httpAddr, certManager.HTTPHandler(nil)); err != nil {
+				logging.Error("Failed to start HTTP challenge server", "error", err)
+			}
+		}()
+	}
+
+	logging.Info("Starting HTTPS server with Let's Encrypt",
+		"host", s.wh.config.Server.Host,
+		"port", s.wh.config.Server.Port,
+		"address", addr,
+		"domain", tlsConfig.Domain)
+
+	if err := s.httpServer.ListenAndServeTLS("", ""); err != nil && err != http.ErrServerClosed {
+		return err
+	}
+
+	return nil
+}
+
 // Stop stops the HTTP server gracefully
 func (s *Server) Stop(ctx context.Context) error {
 	if s.httpServer != nil {
@@ -96,6 +225,9 @@ func (s *Server) setupRoutes() *http.ServeMux {
 	// Serve media files (with auth)
 	mux.HandleFunc("/api/media/", h.ServeMedia)
 
+	// Serve QR codes (no auth - needed during pairing)
+	mux.HandleFunc("/api/qr/", h.ServeQRCode)
+
 	// Business API webhooks (no auth - Meta validates via verify_token)
 	mux.HandleFunc("/webhooks/whatsapp/", h.BusinessAPIWebhook)
 
@@ -103,7 +235,8 @@ func (s *Server) setupRoutes() *http.ServeMux {
 		"health", "/health",
 		"hooks", "/api/hooks",
 		"accounts", "/api/accounts",
-		"send", "/api/send")
+		"send", "/api/send",
+		"qr", "/api/qr")
 
 	return mux
 }