use std::io;

use std::path::Path;

use std::process;

use radicle::git;

use radicle::storage;

/// Abstraction for Git subprocess calls.

pub trait GitService {

    /// Run `git fetch-pack`.

    fn fetch_pack(

        &self,

        working: Option<&Path>,

        stored: &storage::git::Repository,

        oids: Vec<git::Oid>,

        verbosity: git::Verbosity,

    ) -> io::Result<process::Output>;

    /// Run `git send-pack` (via `radicle::git::run`).

    fn send_pack(

        &self,

        working: Option<&Path>,

        args: &[String],

    ) -> io::Result<process::Output>;

}

/// Production implementation using real Git subprocesses.

pub struct RealGitService;

impl GitService for RealGitService {

    fn fetch_pack(

        &self,

        working: Option<&Path>,

        stored: &storage::git::Repository,

        oids: Vec<git::Oid>,

        verbosity: git::Verbosity,

    ) -> io::Result<process::Output> {

        git::process::fetch_pack(working, stored, oids, verbosity)

    }

    fn send_pack(

        &self,

        working: Option<&Path>,

        args: &[String],

    ) -> io::Result<process::Output> {

        git::run(working, args)

    }

}