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use crate::error::UserError;
use crate::fs_handler;
use std::collections::HashMap;
use std::error::Error;
use yaml_rust::{Yaml, YamlLoader};
pub fn get_puzzles(path: &str) -> Result<HashMap<String, String>, Box<dyn Error>> {
let puzzles_paths = fs_handler::collect_files(path, "Puzzles.yml")?;
let mut puzzles: HashMap<String, String> = HashMap::new();
for puzzles_path in &puzzles_paths {
let puzzles_content = fs_handler::read_file(puzzles_path)?;
let parsed_puzzles = parse_puzzles(puzzles_content.as_str())?;
puzzles.extend(parsed_puzzles);
}
Ok(puzzles)
}
fn parse_puzzles(contents: &str) -> Result<HashMap<String, String>, Box<dyn Error>> {
let mut docs = YamlLoader::load_from_str(&contents)?;
let doc = docs.pop().unwrap();
let entries = match doc {
Yaml::Hash(doc) => doc,
_ => return Err(UserError::boxed("Unsupported Puzzles.yml structure")),
};
let mut puzzles: HashMap<String, String> = HashMap::new();
for (key, value) in &entries {
let key = match key {
Yaml::String(key) => key.to_string(),
_ => return Err(UserError::boxed("Unsupported Puzzles.yml key")),
};
let value = match value {
Yaml::String(value) => value.replace("\\", "\\\n "),
_ => return Err(UserError::boxed("Unsupported Puzzles.yml value")),
};
puzzles.insert(key, value);
}
Ok(puzzles)
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn it_gets_puzzles() {
let puzzles = get_puzzles("./assets").unwrap();
let key = String::from("echos");
let value = String::from("RUN echo \'a\' \\\n && echo \'b\'");
assert_eq!(
[(key, value)]
.iter()
.cloned()
.collect::<HashMap<String, String>>(),
puzzles
);
}
}