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use std::{cell::RefCell, collections::HashMap, fmt, fs::File, io, path::Path, result};
use serde::{Deserialize, Deserializer};
use walkdir::WalkDir;
use crate::{
task::{RecipeMeta, TaskDef},
types::TaskID,
};
thread_local! {
pub static CURRENT_RECIPE: RefCell<Option<String>> = RefCell::new(None);
}
fn current_recipe() -> String {
CURRENT_RECIPE.with(|current| {
current
.borrow()
.as_ref()
.expect("No current recipe")
.clone()
})
}
pub fn deserialize_task_id<'de, D>(deserializer: D) -> result::Result<TaskID, D::Error>
where
D: Deserializer<'de>,
{
#[derive(Deserialize)]
struct RecipeTaskID {
recipe: Option<String>,
task: String,
}
let RecipeTaskID { recipe, task } = RecipeTaskID::deserialize(deserializer)?;
Ok(TaskID {
recipe: recipe.unwrap_or_else(current_recipe),
task,
})
}
#[derive(Debug, Deserialize)]
struct Recipe {
#[serde(default)]
pub meta: RecipeMeta,
pub tasks: HashMap<String, TaskDef>,
}
#[derive(Debug)]
pub enum Error {
IOError(io::Error),
YAMLError(serde_yaml::Error),
}
impl From<io::Error> for Error {
fn from(err: io::Error) -> Self {
Error::IOError(err)
}
}
impl From<serde_yaml::Error> for Error {
fn from(err: serde_yaml::Error) -> Self {
Error::YAMLError(err)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match self {
Error::IOError(err) => write!(f, "IO error: {}", err),
Error::YAMLError(err) => write!(f, "YAML error: {}", err),
}
}
}
impl std::error::Error for Error {}
pub type Result<T> = std::result::Result<T, Error>;
fn read_recipe(path: &Path) -> Result<Recipe> {
let f = File::open(path)?;
let recipe: Recipe = serde_yaml::from_reader(f)?;
Ok(recipe)
}
fn is_yml(path: &Path) -> bool {
path.extension() == Some("yml".as_ref())
}
pub fn read_recipes<P: AsRef<Path>>(path: P) -> Result<HashMap<TaskID, TaskDef>> {
let mut tasks = HashMap::new();
for entry in WalkDir::new(path).into_iter().filter_map(|e| e.ok()) {
let path = entry.path();
if !path.is_file() || !is_yml(path) {
continue;
}
let basename = match path.file_stem().map(|n| n.to_str()) {
Some(Some(v)) => v,
_ => continue,
};
CURRENT_RECIPE.with(|current| {
*current.borrow_mut() = Some(basename.to_string());
});
let recipe = read_recipe(path)?;
CURRENT_RECIPE.with(|current| {
*current.borrow_mut() = None;
});
let mut meta = recipe.meta;
if meta.name.is_empty() {
meta.name = basename.to_string();
}
for (label, mut task) in recipe.tasks {
let task_id = TaskID {
recipe: basename.to_string(),
task: label,
};
task.meta = meta.clone();
tasks.insert(task_id, task);
}
}
Ok(tasks)
}
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