cooklang-reports 0.4.0

A Rust library for generating reports from Cooklang recipes using Jinja2-style templates
Documentation 
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use minijinja::{Error as MiniError, ErrorKind, State, Value as MiniValue};
use serde::Deserialize;
use yaml_datastore::Datastore;

fn non_key_error(message: &str) -> MiniError {
    MiniError::new(ErrorKind::NonKey, message.to_owned())
}

pub fn get_from_datastore(state: &State, keypath: &str) -> Result<MiniValue, MiniError> {
    // Lookup datastore. If it exists, convert it from Value to Datastore. Then get the key.
    // This is kinda terse, but the expanded version isn't really any better IMO.
    let datastore = state
        .lookup("datastore")
        .ok_or(non_key_error("bad datastore"))
        .and_then(|x| Option::<Datastore>::deserialize(x)?.ok_or(non_key_error("no datastore")))?;

    if let Ok(value) = datastore.get(keypath) {
        Ok(value)
    } else {
        eprintln!("Warning: key '{keypath}' not found in datastore, using empty value");
        Ok(MiniValue::from(""))
    }
}