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use crate::error::TwinHError;
use hyper::{
service::{make_service_fn, service_fn},
Server,
};
use std::{env, net::IpAddr, net::Ipv4Addr, net::SocketAddr};
mod error;
mod import;
mod models;
mod repo;
mod routes;
mod templates;
#[tokio::main]
async fn main() -> Result<(), TwinHError> {
// print help if there are no arguments
let mut args = env::args().skip(1).peekable();
if args.peek().is_none() {
print_help();
return Ok(());
}
// set default bind addr
let mut bind_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 5353);
// handle arguments and options
while let Some(arg) = args.next() {
match arg.as_str() {
"--create-db" => {
// create a fresh database and quit
repo::create_new_db()?;
return Ok(());
}
"--import" => {
// import CSV data into database
let _source = args
.next()
.ok_or_else(|| TwinHError(String::from("import source not provided")))?;
todo!();
}
"--addr" => {
bind_addr.set_ip(args.next().unwrap_or_default().parse()?);
}
"--port" => {
bind_addr.set_port(args.next().unwrap_or_default().parse()?);
}
_ => {
// if not the last argument (the database) then it's unknown
if args.peek().is_some() {
print_help();
return Ok(());
}
}
};
}
// create primary listener
let make_svc =
make_service_fn(move |_conn| async { Ok::<_, TwinHError>(service_fn(routes::router)) });
// bind server
let server = Server::bind(&bind_addr).serve(make_svc);
let graceful = server.with_graceful_shutdown(shutdown_signal());
// start and run until signal
graceful.await?;
Ok(())
}
async fn shutdown_signal() {
// Wait for CTRL+C
tokio::signal::ctrl_c()
.await
.expect("failed to install CTRL+C signal handler");
}
fn print_help() {
print!(
"twinh: a home-grown classic car parts catalog\n\
\nUsage: twinh [options] <dir>\n\
<dir> your database directory (e.g. /var/db/twinh)\n\
\nOptions:\n\
--addr an ip address to bind to (e.g. 127.0.0.1)\n\
--port a port to bind to (e.g. 5353)\n\
--create-db creates a fresh empty database; <dir> cannot exist yet\n\
--import-cars imports CSV car data into the database\n\
--import-parts imports CSV parts data into the database\n\
"
);
}
|
