use std::ops::Deref;

use secrecy::ExposeSecret;
use tracing::{info, warn};

use crate::server::{
    config::{BranchName, RepoDetails},
    gitforge::{BranchResetError, BranchResetResult, Force},
    types::GitRef,
};

// TODO: (#72) reimplement using `gix`
#[tracing::instrument(skip_all, fields(branch = %branch_name, to = %to_commit, force = %force))]
pub fn reset(
    repo_details: &RepoDetails,
    branch_name: BranchName,
    to_commit: GitRef,
    force: Force,
) -> BranchResetResult {
    let repository = gix::ThreadSafeRepository::open(repo_details.gitdir.deref())
        .map_err(Box::new)?
        .to_thread_local();
    let gitdir = repository.git_dir();
    let origin = repo_details.origin();
    let force = match force {
        Force::No => "".to_string(),
        Force::From(old_ref) => format!("--force-with-lease={branch_name}:{old_ref}"),
    };
    // INFO: never log the command as it contains the API token within the 'origin'
    let command: secrecy::Secret<String> = format!(
        "/usr/bin/git push {} {to_commit}:{branch_name} {force}",
        origin.expose_secret()
    )
    .into();
    let ctx = gix::diff::command::Context {
        git_dir: Some(gitdir.to_path_buf()),
        ..Default::default()
    };
    match gix::command::prepare(command.expose_secret())
        .with_context(ctx)
        .with_shell_allow_argument_splitting()
        .stdout(std::process::Stdio::null())
        .stderr(std::process::Stdio::null())
        .spawn()
    {
        Ok(mut child) => match child.wait() {
            Ok(_) => {
                info!("Branch updated");
                Ok(())
            }
            Err(err) => {
                warn!(?err, "Failed (wait)");
                Err(BranchResetError::Push)
            }
        },
        Err(err) => {
            warn!(?err, "Failed (spawn)");
            Err(BranchResetError::Push)
        }
    }
}