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use serde::Deserialize;
use std::collections::BTreeMap;
#[derive(Debug, Clone, Deserialize)]
pub struct PackagistDist {
#[serde(rename = "type")]
pub dist_type: String,
pub url: String,
pub reference: Option<String>,
pub shasum: Option<String>,
}
#[derive(Debug, Clone, Deserialize)]
pub struct PackagistSource {
#[serde(rename = "type")]
pub source_type: String,
pub url: String,
pub reference: Option<String>,
}
#[derive(Debug, Clone, Deserialize)]
pub struct PackagistVersion {
pub version: String,
pub version_normalized: String,
#[serde(default)]
pub require: BTreeMap<String, String>,
pub dist: Option<PackagistDist>,
pub source: Option<PackagistSource>,
}
/// Parse a Packagist p2 API JSON response.
///
/// The response format is: `{"packages": {"vendor/package": [...]}}`.
pub fn parse_p2_response(json: &str, package_name: &str) -> anyhow::Result<Vec<PackagistVersion>> {
#[derive(Deserialize)]
struct P2Response {
packages: BTreeMap<String, Vec<PackagistVersion>>,
}
let response: P2Response = serde_json::from_str(json)?;
response
.packages
.into_iter()
.find(|(key, _)| key == package_name)
.map(|(_, versions)| versions)
.ok_or_else(|| anyhow::anyhow!("Package \"{package_name}\" not found in response"))
}
/// Fetch package version metadata from the Packagist p2 API.
pub fn fetch_package_versions(package_name: &str) -> anyhow::Result<Vec<PackagistVersion>> {
let url = format!("https://repo.packagist.org/p2/{package_name}.json");
let response = reqwest::blocking::get(&url)?;
if !response.status().is_success() {
anyhow::bail!(
"Failed to fetch package \"{package_name}\" from Packagist (HTTP {})",
response.status()
);
}
let body = response.text()?;
parse_p2_response(&body, package_name)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn parse_p2_response_basic() {
let json = r#"{
"packages": {
"monolog/monolog": [
{
"version": "3.8.0",
"version_normalized": "3.8.0.0",
"require": {"php": ">=8.1"},
"dist": {
"type": "zip",
"url": "https://example.com/monolog-3.8.0.zip",
"reference": "abc123",
"shasum": ""
},
"source": {
"type": "git",
"url": "https://github.com/Seldaek/monolog.git",
"reference": "abc123"
}
},
{
"version": "3.7.0",
"version_normalized": "3.7.0.0",
"require": {"php": ">=8.1"}
}
]
}
}"#;
let versions = parse_p2_response(json, "monolog/monolog").unwrap();
assert_eq!(versions.len(), 2);
assert_eq!(versions[0].version, "3.8.0");
assert_eq!(versions[0].version_normalized, "3.8.0.0");
assert_eq!(versions[0].require.get("php").unwrap(), ">=8.1");
assert!(versions[0].dist.is_some());
assert!(versions[0].source.is_some());
assert_eq!(versions[1].version, "3.7.0");
assert!(versions[1].dist.is_none());
}
#[test]
fn parse_p2_response_not_found() {
let json = r#"{"packages": {"other/pkg": []}}"#;
let result = parse_p2_response(json, "monolog/monolog");
assert!(result.is_err());
}
#[test]
fn parse_p2_response_with_dev_version() {
let json = r#"{
"packages": {
"test/pkg": [
{
"version": "dev-master",
"version_normalized": "dev-master",
"require": {}
},
{
"version": "1.0.0",
"version_normalized": "1.0.0.0",
"require": {}
}
]
}
}"#;
let versions = parse_p2_response(json, "test/pkg").unwrap();
assert_eq!(versions.len(), 2);
assert_eq!(versions[0].version, "dev-master");
assert_eq!(versions[1].version, "1.0.0");
}
}
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