/*
 * git-init-autosave:
 * - generate local repo UUID
 * - add repo to autosave configuration (optionally)
 *
 * git-autosave:
 * - convert workdir to tree
 * - note hostname
 * - commit workdir to `refs/autosave/{UUID}-{branch}`
 * - push autosave ref to branch upstream
 *
 * git-autosave-daemon:
 * - watch configuration directory
 * - watch configured repositories
 * - run autosave on change
 *
 * git-restore-autosave:
 * - fetch upstream's autosaves
 * - filter to autosaves from the local user and branch
 * - display available autosaves if there is more than one
 * - check for conflicts between workdir and autosave
 * - save workdir to `refs/autosave/undo`
 * - copy autosave to `refs/autosave/restored` with new commit
 * - apply tree to workdir
 * - allow `git restore-autosave --force`
 * - allow a device to be specified by name or UUID
 *
 * git-merge-autosave:
 * - error is workdir is dirty
 * - check default merge strategy
 * - merge autosave using default strategy
 * - allow a different merge strategy to be specified
 * - display available autosaves if there is more than one
 *
 * git undo-restore-autosave:
 * - check for differences between workdir and restored save
 * - error if there are unsaved changes
 * - apply `refs/autosave/undo` to tree
 * - allow force
 */

use std::path::PathBuf;

use confy::ConfyError;
use git2::{Error, Repository};
use serde::{Deserialize, Serialize};
use uuid::Uuid;

#[derive(Default, Serialize, Deserialize)]
pub struct Config {
	repositories: Vec<PathBuf>,
}

pub fn load_config() -> Result<Config, ConfyError> {
	confy::load("git-autosave", "git-autosaved")
}

pub fn save_config(config: &Config) -> Result<(), ConfyError> {
	confy::store("git-autosave", "git-autosaved", config)
}

pub fn init(repository: &Repository, config: Option<&mut Config>) -> Result<(), Error> {
	let id = Uuid::new_v4();
	let workdir = repository.workdir();
	repository.config()?.set_str("autosave.id", &id.to_string())?;

	if let Some(config) = config && let Some(workdir) = workdir {
		config.repositories.push(workdir.into());
	}
	
	Ok(())
}