use std::error::Error;

use serde::{Deserialize, Serialize};

use super::repository::{Repository, RepositoryImpl};

#[derive(Serialize, Deserialize, PartialEq, Debug, Clone, Default)]
pub struct Chart {
    // A name of the helm chart
    pub name: String,
    // A reference to repository by name
    pub repository: String,
    pub mirrors: Vec<String>,
    // Versions to be mirrored
    #[serde(default = "latest")]
    pub version: String,
}

pub(crate) fn latest() -> String {
    "latest".to_string()
}

impl Chart {
    pub fn find_repo(
        &self,
        repositories: Vec<Repository>,
    ) -> Result<Box<dyn RepositoryImpl>, Box<dyn Error>> {
        for repository in repositories {
            if repository.name == self.repository {
                if let Some(helm) = repository.helm {
                    return Ok(Box::from(helm));
                } else if let Some(git) = repository.git {
                    return Ok(Box::from(git));
                } else {
                    return Err(Box::from("unsupported kind of repository"));
                }
            }
        }
        //let err = error!("repo {} is not found in the repo list", self.repository);
        let error_msg = format!("repo {} is not found in the repo list", self.repository);
        Err(Box::from(error_msg))
    }
}

#[cfg(test)]
mod tests {
    use std::error::Error;

    use crate::helm::{
        chart::latest,
        helm_repository::HelmRepo,
        repository::{Repository, RepositoryImpl},
    };

    use super::Chart;

    #[test]
    fn test_find_repo() -> Result<(), Box<dyn Error>> {
        let chart = Chart {
            name: "test".to_string(),
            repository: "test".to_string(),
            mirrors: vec!["test".to_string()],
            version: latest(),
        };
        let repo = Repository {
            name: "test".to_string(),
            helm: Some(HelmRepo {
                url: "test.rocks".to_string(),
            }),
        };
        let res = chart.find_repo(vec![repo])?;
        assert_eq!(res.get_url(), "test.rocks".to_string());
        Ok(())
    }
}