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42 lines
1.4 KiB
Markdown
42 lines
1.4 KiB
Markdown
# Architecture
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## Overview
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EchoHub follows a decentralized model where each server is fully independent. There is no central authority or account federation. Users create one account per server.
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## Components
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### EchoHub.Core
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Shared library containing:
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- **Models**: `User`, `Channel`, `Message`, `RefreshToken`
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- **DTOs**: Record types for API requests/responses
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- **Contracts**: `IEchoHubClient` -- the strongly-typed SignalR client interface
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- **Constants**: `ValidationConstants` (shared regex patterns), `HubConstants`
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### EchoHub.Server
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ASP.NET Core web application:
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- **Controllers**: REST API endpoints for auth, channels, users, files, server info
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- **Hubs**: SignalR `ChatHub` for real-time messaging
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- **Auth**: JWT token service (15-min access tokens, 30-day refresh tokens)
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- **Data**: EF Core with SQLite
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- **Services**: Presence tracking, file storage, image-to-ASCII conversion
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### EchoHub.Client
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Terminal.Gui v2 TUI application:
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- **UI**: Main window, dialogs, chat renderer with ANSI color support
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- **Services**: API client with automatic token refresh, SignalR connection wrapper
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- **Themes**: 6 built-in color themes
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- **Config**: Client configuration management
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## Communication
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- REST API for authentication, profile management, channel CRUD, file uploads
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- SignalR WebSocket for real-time messaging and presence updates
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- JWT tokens passed via query string for SignalR authentication
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