cards2pack-core

cards2pack-core is a pure-Rust library that converts Adaptive Card JSON sequences into YGTc 2.0 flow YAML for use in Greentic bundles.

It is deliberately free of async runtimes, filesystem I/O, and subprocess calls so that it can be compiled to wasm32-wasip2 without modifications.

Features

• Parses card sequences (AdaptiveCard + HTTP node entries) from JSON
• Builds a routing graph that respects data.nextCardId (preferred) or data.routeToCardId (legacy fallback) and preserves back-edges
• Emits deterministic YGTc 2.0 YAML with when: conditional routes
• Fixes four bugs present in the legacy greentic-cards2pack v0.4 converter:
  • Alphabetical-ordering instead of route-key-driven routing
  • demo_wrapup incorrectly chosen as flow start
  • Route-key field silently ignored in some card shapes
  • Schema bloat duplicating flat fields outside card.call.payload

Usage

use cards2pack_core::{parse_cards, convert, ConvertOptions};

let cards = parse_cards(json_str)?;
let result = convert(&cards, &ConvertOptions {
    flow_name: "my-flow".into(),
    strict: false,
})?;
println!("{}", result.flow_yaml);