313 lines
8.0 KiB
Go
313 lines
8.0 KiB
Go
package handlers
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import (
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"context"
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"encoding/json"
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"fmt"
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"log"
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"net/http"
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"tailly_back_v2/internal/domain"
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"tailly_back_v2/internal/service"
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"tailly_back_v2/internal/ws"
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"tailly_back_v2/pkg/auth"
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"time"
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"github.com/gorilla/websocket"
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)
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var upgrader = websocket.Upgrader{
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ReadBufferSize: 1024,
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WriteBufferSize: 1024,
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CheckOrigin: func(r *http.Request) bool {
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return true
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},
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Subprotocols: []string{"graphql-transport-ws"},
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}
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type ChatHandler struct {
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chatService service.ChatService
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hub *ws.Hub
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tokenAuth *auth.TokenAuth
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}
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func NewChatHandler(chatService service.ChatService, hub *ws.Hub, tokenAuth *auth.TokenAuth) *ChatHandler {
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return &ChatHandler{
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chatService: chatService,
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hub: hub,
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tokenAuth: tokenAuth,
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}
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}
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func (h *ChatHandler) HandleWebSocket(w http.ResponseWriter, r *http.Request) {
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log.Printf("Incoming WebSocket headers: %+v", r.Header)
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log.Printf("Cookies: %+v", r.Cookies())
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conn, err := upgrader.Upgrade(w, r, nil)
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if err != nil {
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log.Printf("WebSocket upgrade error: %v", err)
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return
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}
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// Создаем клиента без userID (он будет установлен при аутентификации)
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client := &ws.Client{
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Send: make(chan *domain.Message, 256),
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LastSeen: time.Now(),
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CloseChan: make(chan bool, 1),
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}
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h.hub.RegisterClient(client)
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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// Горутина для чтения (теперь включает аутентификацию)
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go h.readPump(ctx, conn, client)
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// Горутина для записи с обработкой закрытия
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go func() {
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defer conn.Close()
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defer h.hub.UnregisterClient(client)
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for {
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select {
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case <-ctx.Done():
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return
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case <-client.CloseChan:
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return
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case message, ok := <-client.Send:
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if !ok {
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return
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}
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// Добавляем таймаут на запись
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conn.SetWriteDeadline(time.Now().Add(10 * time.Second))
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if err := conn.WriteJSON(message); err != nil {
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log.Printf("WebSocket write error: %v", err)
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return
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}
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conn.SetWriteDeadline(time.Time{}) // Сбрасываем таймаут
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}
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}
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}()
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}
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func (h *ChatHandler) readPump(ctx context.Context, conn *websocket.Conn, client *ws.Client) {
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ticker := time.NewTicker(30 * time.Second)
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defer ticker.Stop()
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defer conn.Close()
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// 1. Аутентификация
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if err := h.authenticateConnection(conn, client); err != nil {
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log.Printf("Authentication failed: %v", err)
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return
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}
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// 2. Основной цикл обработки сообщений
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for {
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select {
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case <-ticker.C:
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if err := h.sendPing(conn); err != nil {
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return
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}
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case <-ctx.Done():
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return
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default:
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if err := h.handleMessage(ctx, conn, client); err != nil {
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if websocket.IsUnexpectedCloseError(err, websocket.CloseGoingAway, websocket.CloseAbnormalClosure) {
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log.Printf("WebSocket error: %v", err)
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}
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return
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}
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}
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}
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}
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func (h *ChatHandler) authenticateConnection(conn *websocket.Conn, client *ws.Client) error {
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var authMsg struct {
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Type string `json:"type"`
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Token string `json:"token"`
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}
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// Устанавливаем таймаут для аутентификации
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conn.SetReadDeadline(time.Now().Add(10 * time.Second))
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defer conn.SetReadDeadline(time.Time{})
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if err := conn.ReadJSON(&authMsg); err != nil {
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conn.WriteJSON(map[string]string{"type": "error", "message": "Auth required"})
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return fmt.Errorf("failed to read auth message: %v", err)
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}
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if authMsg.Type != "auth" || authMsg.Token == "" {
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conn.WriteJSON(map[string]string{"type": "error", "message": "Invalid auth message"})
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return fmt.Errorf("first message must be auth with token")
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}
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userID, err := h.tokenAuth.ValidateAccessToken(authMsg.Token)
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if err != nil {
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conn.WriteJSON(map[string]string{"type": "error", "message": "Invalid token"})
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return fmt.Errorf("token validation error: %v", err)
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}
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client.UserID = userID
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log.Printf("WebSocket authenticated, userID=%d", userID)
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// Отправляем подтверждение аутентификации
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if err := conn.WriteJSON(map[string]interface{}{
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"type": "auth_success",
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"user": map[string]interface{}{
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"id": userID,
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},
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}); err != nil {
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return fmt.Errorf("failed to send auth confirmation: %v", err)
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}
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return nil
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}
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func (h *ChatHandler) sendPing(conn *websocket.Conn) error {
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if err := conn.WriteJSON(map[string]string{"type": "ping"}); err != nil {
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log.Printf("Ping error: %v", err)
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return err
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}
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return nil
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}
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func (h *ChatHandler) handleMessage(ctx context.Context, conn *websocket.Conn, client *ws.Client) error {
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var msg struct {
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Type string `json:"type"`
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Payload json.RawMessage `json:"payload"` // Используем RawMessage для гибкости
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}
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if err := conn.ReadJSON(&msg); err != nil {
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return err
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}
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switch msg.Type {
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case "pong":
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return nil
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case "ping":
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return conn.WriteJSON(map[string]string{"type": "pong"})
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case "message":
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return h.handleChatMessage(ctx, conn, client, msg.Payload)
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default:
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log.Printf("Unknown message type: %s", msg.Type)
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return conn.WriteJSON(map[string]string{
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"type": "error",
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"message": "Unknown message type: " + msg.Type,
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})
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}
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}
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func (h *ChatHandler) handleChatMessage(ctx context.Context, conn *websocket.Conn, client *ws.Client, payload json.RawMessage) error {
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if client.UserID == 0 {
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return conn.WriteJSON(map[string]string{
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"type": "error",
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"message": "Not authenticated",
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})
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}
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var messageData struct {
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ReceiverID int `json:"receiverId"`
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ChatID int `json:"chatId"`
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Content string `json:"content"`
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}
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if err := json.Unmarshal(payload, &messageData); err != nil {
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return conn.WriteJSON(map[string]interface{}{
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"type": "error",
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"message": "Invalid message format",
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"details": err.Error(),
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})
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}
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// Валидация данных сообщения
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if messageData.ReceiverID == 0 && messageData.ChatID == 0 {
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return conn.WriteJSON(map[string]interface{}{
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"type": "error",
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"message": "Either receiverId or chatId must be provided",
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})
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}
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if messageData.Content == "" {
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return conn.WriteJSON(map[string]interface{}{
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"type": "error",
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"message": "Message content cannot be empty",
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})
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}
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// Определяем chatId если не указан
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chatID := messageData.ChatID
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if chatID == 0 {
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chat, err := h.chatService.GetOrCreateChat(ctx, client.UserID, messageData.ReceiverID)
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if err != nil {
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log.Printf("Chat error: %v", err)
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return conn.WriteJSON(map[string]interface{}{
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"type": "error",
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"message": "Failed to get or create chat",
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"details": err.Error(),
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})
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}
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chatID = chat.ID
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}
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// Отправляем сообщение
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message, err := h.chatService.SendMessage(
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ctx,
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client.UserID,
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chatID,
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messageData.Content,
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)
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if err != nil {
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log.Printf("Message send error: %v", err)
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return conn.WriteJSON(map[string]interface{}{
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"type": "error",
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"message": "Failed to send message",
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"details": err.Error(),
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})
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}
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// Убедимся, что в сообщении есть получатель
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if message.ReceiverID == 0 {
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if messageData.ReceiverID != 0 {
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message.ReceiverID = messageData.ReceiverID
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} else {
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// Если receiver не указан, определяем его через чат
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chat, err := h.chatService.GetChatByID(ctx, chatID)
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if err == nil {
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if chat.User1ID == client.UserID {
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message.ReceiverID = chat.User2ID
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} else {
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message.ReceiverID = chat.User1ID
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}
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}
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}
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}
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// Рассылаем сообщение всем подписчикам
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h.hub.Broadcast(message)
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return nil
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}
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func (h *ChatHandler) writePump(ctx context.Context, conn *websocket.Conn, client *ws.Client) {
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defer conn.Close()
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for {
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select {
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case <-ctx.Done():
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return
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case message, ok := <-client.Send:
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if !ok {
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// Канал закрыт
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conn.WriteMessage(websocket.CloseMessage, []byte{})
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return
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}
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if err := conn.WriteJSON(message); err != nil {
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log.Printf("WebSocket write error: %v", err)
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return
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}
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}
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}
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}
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