//
use crate::{
    git::{self, repository::open::OpenRepositoryLike},
    RemoteUrl,
};

use tracing::info;

#[tracing::instrument(skip_all)]
pub fn validate_default_remotes(
    open_repository: &dyn OpenRepositoryLike,
    repo_details: &git::RepoDetails,
) -> Result<()> {
    let push_remote = open_repository
        .find_default_remote(git::repository::Direction::Push)
        .ok_or_else(|| Error::NoDefaultPushRemote)?;
    let fetch_remote = open_repository
        .find_default_remote(git::repository::Direction::Fetch)
        .ok_or_else(|| Error::NoDefaultFetchRemote)?;
    let Some(remote_url) = repo_details.remote_url() else {
        return Err(git::validation::remotes::Error::UnableToOpenRepo(
            "Unable to build forge url".to_string(),
        ));
    };
    info!(config = %remote_url, push = %push_remote, fetch = %fetch_remote, "Check remotes match");
    if !remote_url.matches(&push_remote) {
        return Err(Error::MismatchDefaultPushRemote {
            found: push_remote,
            expected: remote_url,
        });
    }
    if !remote_url.matches(&fetch_remote) {
        return Err(Error::MismatchDefaultFetchRemote {
            found: fetch_remote,
            expected: remote_url,
        });
    }
    Ok(())
}

type Result<T> = core::result::Result<T, Error>;
#[derive(Debug, thiserror::Error)]
pub enum Error {
    #[error("no default push remote")]
    NoDefaultPushRemote,

    #[error("no default fetch remote")]
    NoDefaultFetchRemote,

    #[error("no url for default push remote")]
    NoUrlForDefaultPushRemote,

    #[error("no hostname for default push remote")]
    NoHostnameForDefaultPushRemote,

    #[error("unable to open repo: {0}")]
    UnableToOpenRepo(String),

    #[error("io")]
    Io(#[from] std::io::Error),

    #[error("MismatchDefaultPushRemote(found: {found}, expected: {expected})")]
    MismatchDefaultPushRemote {
        found: RemoteUrl,
        expected: RemoteUrl,
    },

    #[error("MismatchDefaultFetchRemote(found: {found}, expected: {expected})")]
    MismatchDefaultFetchRemote {
        found: RemoteUrl,
        expected: RemoteUrl,
    },

    #[error("Unable to open repo")]
    GixOpen(#[from] gix::open::Error),
}