This is a Go-based video parsing tool that removes watermarks from videos across 20+ Chinese social media platforms (Douyin, Kuaishou, Bilibili, Weibo, etc.). It provides three interfaces: a CLI tool (using Cobra subcommands `serve`, `parse`, `id`, `version`), an HTTP API (Gin-based with v1 RESTful endpoints and legacy backward-compatible routes), and a reusable Go library. The architecture is a monolith with a clean separation: `parser/` package contains platform-specific parsers implementing strategy pattern interfaces, `cmd/` package handles CLI and HTTP server logic with a middleware stack (recovery, CORS, rate limiting, basic auth, logging), and `utils/` provides URL extraction. The system is stateless, uses no database, and relies on HTTP scraping and API calls to extract video metadata. Notable engineering craftsmanship includes a custom anti-crawling a_bogus signature generation for Douyin's native detail API (SM3 hash, RC4 encryption), a concurrent-safe proxy injection via atomic.Value, and a well-tested middleware stack with IP-based rate limiting using sync.Map and periodic cleanup. The codebase has comprehensive unit and integration tests, CI/CD pipelines, and Docker support.
LiveAutoRecord is a multi-platform live stream recording application built on a TypeScript monorepo architecture. It supports three distinct deployment modes: a desktop client (Electron), a headless HTTP server (Express), and a CLI tool. The core functionality revolves around automatically detecting live streams from platforms like Bilibili, Douyu, Huya, and Douyin, resolving stream URLs, and capturing video via FFmpeg while simultaneously collecting metadata such as danmu and gift messages. The system uses a provider pattern to allow extensibility for new platforms. The architecture relies heavily on Node.js 22+ and Electron 40, indicating a commitment to bleeding-edge runtime versions. Data persistence is handled via LowDB with JSON file adapters, which serves the application's needs but introduces scalability limitations for large datasets. The codebase demonstrates solid engineering practices in its separation of concerns, with distinct packages for core logic, platform-specific adapters, and shared utilities. However, the reliance on platform-specific anti-crawl logic (e.g., VM execution for Huya, signature generation for Douyu) creates inherent fragility. A critical technical debt issue is the use of the `vm2` library in the Douyu recorder, which carries known critical security vulnerabilities (CVE-2023-37466). While a replacement plan exists in the documentation, the current state poses a significant security risk. Additionally, the high number of open issues (89) relative to the star count suggests accumulating technical debt and feature requests that may impact long-term stability.