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use std::str::FromStr;
use bincode::{Decode, Encode};
use semver::VersionReq;
use crate::{Error, Result};
/// Represents the network version and protocol version used in Karyons p2p.
///
/// # Example
///
/// ```
/// use karyons_p2p::Version;
///
/// let version: Version = "0.2.0, >0.1.0".parse().unwrap();
///
/// let version: Version = "0.2.0".parse().unwrap();
///
/// ```
#[derive(Debug, Clone)]
pub struct Version {
pub v: VersionInt,
pub req: VersionReq,
}
impl Version {
/// Creates a new Version
pub fn new(v: VersionInt, req: VersionReq) -> Self {
Self { v, req }
}
}
#[derive(Debug, Decode, Encode, Clone)]
pub struct VersionInt {
major: u64,
minor: u64,
patch: u64,
}
impl FromStr for Version {
type Err = Error;
fn from_str(s: &str) -> Result<Self> {
let v: Vec<&str> = s.split(", ").collect();
if v.is_empty() || v.len() > 2 {
return Err(Error::ParseError(format!("Invalid version{s}")));
}
let version: VersionInt = v[0].parse()?;
let req: VersionReq = if v.len() > 1 { v[1] } else { v[0] }.parse()?;
Ok(Self { v: version, req })
}
}
impl FromStr for VersionInt {
type Err = Error;
fn from_str(s: &str) -> Result<Self> {
let v: Vec<&str> = s.split('.').collect();
if v.len() < 2 || v.len() > 3 {
return Err(Error::ParseError(format!("Invalid version{s}")));
}
let major = v[0].parse::<u64>()?;
let minor = v[1].parse::<u64>()?;
let patch = v.get(2).unwrap_or(&"0").parse::<u64>()?;
Ok(Self {
major,
minor,
patch,
})
}
}
impl std::fmt::Display for VersionInt {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
write!(f, "{}.{}.{}", self.major, self.minor, self.patch)
}
}
impl From<VersionInt> for semver::Version {
fn from(v: VersionInt) -> Self {
semver::Version::new(v.major, v.minor, v.patch)
}
}
/// Check if a version satisfies a version request.
pub fn version_match(version_req: &VersionReq, version: &VersionInt) -> bool {
let version: semver::Version = version.clone().into();
version_req.matches(&version)
}
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