particle-os-cli/src/lib.rs
2023-12-17 22:04:27 -05:00

114 lines
3.8 KiB
Rust

//! The root library for ublue-rs.
//!
//! This module consists of the args for the cli as well as the
//! initial entrypoint for setting up tera to properly template
//! the Containerfile. There is support for legacy starting point
//! recipes using the feature flag 'legacy' and support for the newest
//! starting point setup using the 'modules' feature flag. You will not want
//! to use both features at the same time. For now the 'legacy' feature
//! is the default feature until modules works 1-1 with ublue starting point.
#[cfg(feature = "init")]
pub mod init;
#[cfg(feature = "build")]
pub mod build;
pub mod module_recipe;
use std::{
collections::HashMap,
fs::{self, read_to_string},
path::{Path, PathBuf},
};
use anyhow::Result;
use module_recipe::Recipe;
use tera::{Context, Tera};
pub const DEFAULT_CONTAINERFILE: &str = include_str!("../templates/Containerfile.tera");
fn setup_tera(recipe: &Path, containerfile: Option<&PathBuf>) -> Result<(Tera, Context)> {
let recipe_de = serde_yaml::from_str::<Recipe>(fs::read_to_string(recipe)?.as_str())?;
let mut context = Context::from_serialize(recipe_de)?;
context.insert("recipe", &recipe);
let mut tera = Tera::default();
match containerfile {
Some(containerfile) => {
tera.add_raw_template("Containerfile", &read_to_string(containerfile)?)?
}
None => tera.add_raw_template("Containerfile", DEFAULT_CONTAINERFILE)?,
}
tera.register_function(
"print_containerfile",
|args: &HashMap<String, tera::Value>| -> tera::Result<tera::Value> {
match args.get("containerfile") {
Some(v) => match v.as_str() {
Some(containerfile) => Ok(read_to_string(format!(
"config/containerfiles/{containerfile}/Containerfile"
))?
.into()),
None => Err("Arg containerfile wasn't a string".into()),
},
None => Err("Needs the argument 'containerfile'".into()),
}
},
);
tera.register_function(
"print_module_context",
|args: &HashMap<String, tera::Value>| -> tera::Result<tera::Value> {
match args.get("module") {
Some(v) => Ok(match serde_json::to_string(v) {
Ok(s) => s,
Err(_) => "Unable to serialize".into(),
}
.into()),
None => Err("Needs the argument 'module'".into()),
}
},
);
tera.register_function(
"get_module_from_file",
|args: &HashMap<String, tera::Value>| -> tera::Result<tera::Value> {
match args.get("file") {
Some(v) => {
let file = match v.as_str() {
Some(s) => s,
None => return Err("Property 'from-file' must be a string".into()),
};
match serde_yaml::from_str::<tera::Value>(
read_to_string(format!("config/{file}"))?.as_str(),
) {
Ok(context) => Ok(context),
Err(_) => Err(format!("Unable to deserialize file {file}").into()),
}
}
None => Err("Needs the argument 'file'".into()),
}
},
);
Ok((tera, context))
}
pub fn template_file(
recipe: &Path,
containerfile: Option<&PathBuf>,
output: Option<&PathBuf>,
) -> Result<()> {
let (tera, context) = setup_tera(recipe, containerfile)?;
let output_str = tera.render("Containerfile", &context)?;
if let Some(output) = output {
std::fs::write(output, output_str)?;
} else {
println!("{output_str}");
}
Ok(())
}