This is a Go client library for the Slack API, providing comprehensive coverage of Slack's REST API, Real-Time Messaging (RTM) over WebSocket, Socket Mode for event-driven interactions, and the Block Kit for rich interactive messages. It enables developers to build Slack apps, bots, and integrations with full access to Slack's platform features including messaging, files, admin functions, workflows, and more. The library is organized into several packages: `slack` (main client with all API methods), `socketmode` (WebSocket client for Socket Mode), `slackevents` (Events API parsing), `slacktest` (mock server for testing), and `internal` (backoff, error handling). It uses a functional options pattern for API calls, context propagation for cancellation, and a pluggable retry system. The Block Kit is implemented with builder patterns and custom JSON serialization for type-safe block construction. Key entry points include `slack.New(token)` to create a client, `socketmode.NewClient` for WebSocket connections, and `slackevents.ParseEvent` for Events API payloads. The library handles authentication, rate limiting, pagination, and error responses. External dependencies are minimal, relying primarily on the Go standard library and a WebSocket library for real-time communication.
Botdarr is a Java-based chat bot application that integrates with Radarr, Sonarr, and Lidarr media management services, allowing users to search, add, and monitor movies, TV shows, and music via chat platforms (Discord, Slack, Telegram, Matrix). The system uses a monolithic architecture with modular packages: API clients for each media service, command processing, chat platform adapters, and a SQLite database for persistence (e.g., user request limits, callback data). The main entry point is `BotdarrApplication`, which initializes the configured chat client and starts listening for commands. Data flows: user messages are received by the chat client, parsed by `CommandProcessor`, which executes commands that call the media service APIs (via `RadarrApi`, `SonarrApi`, `LidarrApi`), and responses are formatted by platform-specific `ChatClientResponseBuilder` implementations before being sent back. External dependencies include Apache HttpClient, Jackson, JDA (Discord), Slack SDK, Telegram Bot API, Matrix client-server API, and Flyway for database migrations. The codebase demonstrates solid engineering with strategy patterns for lookup/add/downloads, a command pattern for user interactions, and a clean abstraction for chat client response formatting. However, it suffers from technical drift due to reliance on Java 8, outdated libraries (JMockit 1.40, Jackson 2.13.4.1), and manual versioning. The Matrix client support appears incomplete, and response formatting logic is duplicated across platforms, increasing maintenance burden.