use std::{collections::HashMap, fs::File, path::Path};

use serde::{Deserialize, Serialize};

use common::{error::*, string_hash::*};

#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct Args {
	pub host: Option<String>,
	pub target: Option<String>,
}

#[derive(Clone, Debug, Deserialize, Serialize)]
pub struct Provides {
	pub recipe: String,
	pub task: String,
	pub output: Vec<String>,
	pub args: Args,
}

#[derive(Clone, Debug, Deserialize, Serialize)]
#[serde(rename_all = "kebab-case")]
pub struct Pin {
	pub hash: Option<ArchiveHash>,
	#[serde(default)]
	pub provides: Vec<Provides>,
	#[serde(default)]
	pub is_rootfs: bool,
}

pub type Pins = HashMap<String, Pin>;

pub fn read_pins<P: AsRef<Path>>(path: P) -> Result<Pins> {
	let f = File::open(path)?;
	let pins: Pins = serde_yaml::from_reader(f)
		.map_err(Error::new)
		.context("YAML error")?;
	Ok(pins)
}