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Artemy
54 lines
1.8 KiB
Markdown
54 lines
1.8 KiB
Markdown
---
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description: SignalR hub for managing user online presence and notifications.
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icon: wifi
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---
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# PresenceHub
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### Controller Description
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* **Route**: `hubs/presence`
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* **Authorize**: Requires authenticated user with roles "Admin" or "User" (`[Authorize(Roles = "Admin, User")]`).
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### Hub Methods
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#### <mark style="color:$info;">OnConnectedAsync</mark>
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* **Description**: Invoked when a client connects, updates online status and notifies friends.
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* **Behavior**:
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* Retrieves user ID from context.
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* Aborts connection if user ID is `Guid.Empty` or user does not exist.
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* Adds user to online store and their personal group.
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* Notifies friends of user going online via `UserOnline` event.
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* **Client-Side Events**:
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* **UserOnline**: Triggered for friends with payload `userId` (Guid).
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* **Responses**: None (connection aborted on invalid user ID).
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#### <mark style="color:$info;">OnDisconnectedAsync</mark>
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* **Description**: Invoked when a client disconnects, updates offline status and notifies friends.
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* **Behavior**:
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* Retrieves user ID from context, suppressing exceptions.
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* Removes user from personal group if ID is valid.
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* Updates user's `WasOnline` timestamp.
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* Sets user as offline in store.
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* Notifies friends of user going offline via `UserOffline` event.
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* **Client-Side Events**:
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* **UserOffline**: Triggered for friends with payload `userId` (Guid).
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* **Responses**: None.
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### Data Models
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* **N/A**: No specific data models defined for hub methods.
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### Error Handling
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* **Invalid User ID**: Aborts connection with logged warning if `Guid.Empty` or user not found.
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* **Unexpected Errors**: Logged, but no specific response (handled by base method).
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### Logging
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* Logs warnings for invalid user ID on connection.
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* Logs information for disconnections with user ID and connection ID.
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* Logs errors for unexpected exceptions during disconnection.
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