use reqwest;
use serde::Deserialize;
use url::Url;

pub struct Registry<'a> {
  pub url: &'a str,
}

#[allow(dead_code)]
#[derive(Debug, Deserialize)]
pub struct RepositoryList {
  pub repositories: Vec<String>,
}

#[allow(dead_code)]
#[derive(Debug, Deserialize)]
pub struct RepositoryTags {
  name: String,
  tags: Option<Vec<String>>,
}

impl<'a> Registry<'a> {
  pub async fn get_repositories(&self) -> Result<RepositoryList, Box<dyn std::error::Error>> {
    let registry_url = Url::parse(self.url).unwrap();
    let api_url = registry_url.join("/v2/_catalog").unwrap();

    let resp = reqwest::get(api_url)
      .await?
      .json::<RepositoryList>()
      .await?;

    Ok(resp)
  }

  pub async fn get_repository_tags(
    &self,
    repo: &str,
  ) -> Result<RepositoryTags, Box<dyn std::error::Error>> {
    let registry_url = Url::parse(self.url).unwrap();
    let api_url = registry_url
      .join(format!("/v2/{}/tags/list", repo).as_str())
      .unwrap();

    let resp = reqwest::get(api_url).await?;

    println!("{:?}", resp.headers());

    let data = resp.json::<RepositoryTags>().await?;
    Ok(data)
  }
}