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#![doc(html_root_url = "https://docs.rs/bc-ur/0.1.7")]
#![warn(rust_2018_idioms)]

//! # Blockchain Commons Uniform Resources ("UR") for Rust
//!
//! [Uniform Resources
//! (URs)](https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-005-ur.md)
//! are URI-encoded [CBOR](https://cbor.io) structures developed by [Blockchain
//! Commons](https://blockchaincommons.com). This crate is an opinionated
//! wrapper around the [ur](https://crates.io/crates/ur) crate by [Dominik
//! Spicher](https://github.com/dspicher), and is intended primarily for use in
//! higher-level Blockchain Commmons projects like [Gordian
//! Envelope](https://crates.io/crates/bc-envelope).
//!
//! It is a requirement of the UR specification that the CBOR encoded as URs
//! conform to Gordian dCBOR, which is a deterministic profile of CBOR currently
//! specified in [this IETF Internet
//! Draft](https://datatracker.ietf.org/doc/draft-mcnally-deterministic-cbor/).
//! The dependency `dcbor` crate can be used directly for that purpose. This
//! crate provides the traits `UREncodable`, `URDecodable`, and `URCodable` that
//! are built on traits from the `dcbor` crate such as `CBORTaggedEncodable` and
//! `CBORTaggedDecodable`. It is strongly recommended that adopters of URs
//! implement these traits for their types.
//!
//! This crate does not currenly provide opinionated affordances for multi-part
//! URs using fountain codes, but the dependency `ur` crate can be used directly
//! for that purpose.
//!
//! # Getting Started
//!
//! Add the following to your `Cargo.toml`:
//!
//! ```toml
//! [dependencies]
//! bc-ur = "0.1.7"
//! ```
//!
//! # Specification
//!
//! The primary specification for URs is [BCR-2020-005:
//! Uniform Resources](https://github.com/BlockchainCommons/Research/blob/master/papers/bcr-2020-005-ur.md)
//! and the Swift implementation [URKit](https://github.com/BlockchainCommons/URKit).
//!
//! # Usage
//!
//! Encode a CBOR structure as a UR.
//!
//! ```
//! # fn main() {
//! # {
//! use dcbor::*;
//! use bc_ur::*;
//! let cbor = vec![1, 2, 3].cbor();
//! let ur = UR::new("test", &cbor).unwrap();
//! let ur_string = ur.string();
//! assert_eq!(ur_string, "ur:test/lsadaoaxjygonesw");
//! # }
//! # }
//! ```
//!
//! Decode a UR back to a CBOR structure.
//!
//! ```
//! # fn main() {
//! # {
//! use dcbor::*;
//! use bc_ur::*;
//! let ur_string = "ur:test/lsadaoaxjygonesw";
//! let ur = UR::from_ur_string(ur_string).unwrap();
//! assert_eq!(ur.ur_type, "test");
//! assert_eq!(&ur.cbor, &vec![1, 2, 3].cbor());
//! # }
//! # }
//! ```

mod ur;
pub use crate::ur::UR;

mod error;
mod utils;

mod ur_encodable;
pub use ur_encodable::UREncodable;

mod ur_decodable;
pub use ur_decodable::URDecodable;

mod ur_codable;
pub use ur_codable::URCodable;

#[cfg(test)]
mod tests {
    #[test]
    fn test_readme_deps() {
        version_sync::assert_markdown_deps_updated!("README.md");
    }

    #[test]
    fn test_html_root_url() {
        version_sync::assert_html_root_url_updated!("src/lib.rs");
    }
}

#[cfg(test)]
mod example_tests {
    use dcbor::*;
    use crate::*;

    #[test]
    fn encode() {
        let cbor = vec![1, 2, 3].cbor();
        let ur = UR::new("test", &cbor).unwrap();
        let ur_string = ur.string();
        assert_eq!(ur_string, "ur:test/lsadaoaxjygonesw");
    }

    #[test]
    fn decode() {
        let ur_string = "ur:test/lsadaoaxjygonesw";
        let ur = UR::from_ur_string(ur_string).unwrap();
        assert_eq!(ur.ur_type, "test");
        assert_eq!(&ur.cbor, &vec![1, 2, 3].cbor());
    }
}