use std::env;
use std::fs;
use std::path::PathBuf;
use std::process::Command;
use anyhow::Result;
use tinytemplate::TinyTemplate;
use crate::config::{Context, Dependencies};
const BUILD_TEMPLATE: &'static str = include_str!("./templates/elixir/mix.exs.tmpl");
const SOURCE_TEMPLATE: &'static str = include_str!("./templates/elixir/parser.ex.tmpl");
fn generate_templates(deps: Dependencies) -> Result<Vec<(&'static str, String)>> {
let mut template = TinyTemplate::new();
template.add_template("mix.exs", BUILD_TEMPLATE)?;
template.add_template("parser.ex", SOURCE_TEMPLATE)?;
let build_template = template
.render("mix.exs", &Context { deps: deps.clone() })
.unwrap();
let source_template = template
.render("parser.ex", &Context { deps })
.unwrap();
let mut templates = Vec::new();
templates.push(("mix.exs", build_template));
templates.push(("lib/parser.ex", source_template));
Ok(templates)
}
pub fn write_project(path: String, deps: Dependencies) -> Result<()> {
println!("Generating mix project...");
let folder_path = PathBuf::from(path);
let templates = generate_templates(deps.clone())?;
let (build_path, build_template) = templates.get(0).unwrap();
let (source_path, source_template) = templates.get(1).unwrap();
fs::create_dir_all(folder_path.clone())?;
env::set_current_dir(folder_path.clone())?;
fs::write(build_path, build_template)?;
fs::create_dir(PathBuf::from("lib"))?;
fs::write(source_path, source_template)?;
Ok(())
}
pub fn run(shell: bool) -> Result<()> {
let stdout = os_pipe::dup_stdout()?;
let mut mix = Command::new("mix")
.args(&["do", "deps.get,", "deps.compile"])
.stdout(stdout)
.spawn()?;
let _ = mix.wait();
if shell {
let stdout = os_pipe::dup_stdout()?;
let mut iex_command = Command::new("iex")
.args(&["-S", "mix"])
.stdout(stdout)
.stdin(os_pipe::dup_stdin().unwrap())
.spawn()?;
let _ = iex_command.wait();
}
Ok(())
}