$ show JunkFood02/Seal
Seal is an Android application that serves as a graphical frontend for yt-dlp, enabling users to download videos and audio from a wide range of websites. Built with Kotlin and Jetpack Compose, it features a Material Design 3 interface with dynamic color theming. The app manages download tasks through a state machine, supports playlists, custom command templates, cookies, SponsorBlock integration, and extensive format selection. It relies on yt-dlp (via youtubedl-android), FFmpeg, and aria2c as external engines, and uses Room for local database storage, MMKV for preferences, and Koin for dependency injection. The architecture is a single-activity Compose Navigation app with a foreground download service. While the codebase is well-organized and actively maintained, it exhibits some technical drift (e.g., deprecated Accompanist WebView, minimal test coverage) and contains a few monolithic modules. Notable reusable components include a standalone color science library implementing CAM16/HCT, a backup/restore utility for database objects, and a custom motion system for Material Shared Axis transitions.
The LLM identified 3 files worth highlighting for reuse:
Implements the CAM16 color appearance model (CAM16-UCS) from the Material Design color system. This is a non-trivial, self-contained library that computes perceptually accurate color distances and can be extracted for use in any application requiring advanced color manipulation. It demonstrates deep understanding of color science and is isolated in its own module with no internal dependencies.
Provides a generic backup and restore mechanism for Room database entities using kotlinx.serialization. It serializes lists of database objects (DownloadedVideoInfo, CommandTemplate, OptionShortcut) to JSON and can deserialize them back. The utility is self-contained, parameterized by entity type, and could be reused in any Android project needing database export/import with minimal adaptation.
Implements Material Design Shared Axis transitions (X, Y, Z) for Jetpack Compose, providing smooth and consistent page transitions. The implementation is self-contained, uses custom easing curves, and can be extracted as a reusable animation library for any Compose-based app. It demonstrates advanced Compose animation skills and follows Material Motion guidelines.