114 lines
3.2 KiB
Rust
114 lines
3.2 KiB
Rust
use std::str::FromStr;
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use std::sync::Arc;
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use std::thread;
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use crate::domain;
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use crate::domain::ingredient::types::Lang;
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use crate::repo::ingredient::StaticIngredientRepo;
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pub fn start() {
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use tiny_http::{Header, Response, Server};
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let server = Arc::new(Server::http("0.0.0.0:33333").unwrap());
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println!("Server listening on http://localhost:33333");
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let mut handles = Vec::with_capacity(4);
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for _ in 0..4 {
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let server = server.clone();
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handles.push(thread::spawn(move || {
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for rq in server.incoming_requests() {
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let url = Url::parse(rq.url());
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let _ = match url.path_segments()[..] {
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["ingredients"] => {
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use domain::ingredient::fetch_list;
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let opts = FetchIngredientsOpts::from(url.query_params());
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let repo = StaticIngredientRepo;
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let ingredients = fetch_list::execute(&repo, opts.into());
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let data = serde_json::to_string(&ingredients).unwrap();
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let response = Response::from_string(data).with_header(
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Header::from_str("content-type: application/json").unwrap(),
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);
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rq.respond(response)
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}
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_ => rq.respond(Response::from_string("Not found")),
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};
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}
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}));
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}
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for h in handles {
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h.join().unwrap();
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}
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}
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#[derive(Default, Debug)]
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struct FetchIngredientsOpts<'a> {
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lang: Option<&'a str>,
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}
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impl<'a> From<QueryParams<'a>> for FetchIngredientsOpts<'a> {
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fn from(params: QueryParams<'a>) -> Self {
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params
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.into_iter()
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.fold(FetchIngredientsOpts::default(), |mut opts, p| {
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match p {
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("lang", val) => opts.lang = Some(val),
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_ => {}
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};
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opts
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})
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}
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}
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impl From<FetchIngredientsOpts<'_>> for domain::ingredient::fetch_list::RequestOpts {
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fn from(rest: FetchIngredientsOpts) -> Self {
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let lang = rest.lang.and_then(|l| Lang::from_str(l).ok());
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Self { lang }
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}
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}
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#[derive(Debug)]
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struct Url<'a> {
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path: &'a str,
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query: Option<&'a str>,
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}
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type QueryParam<'a> = (&'a str, &'a str);
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type QueryParams<'a> = Vec<QueryParam<'a>>;
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impl Url<'_> {
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pub fn parse(url: &str) -> Url {
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let mut parts = url.splitn(2, '?');
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let path = parts.next().unwrap_or_default();
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let query = parts.next();
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Url { path, query }
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}
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pub fn path_segments(&self) -> Vec<&str> {
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self.path.split('/').skip(1).collect()
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}
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pub fn query_params(&self) -> Vec<QueryParam> {
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self.query
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.map(|q| {
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q.split('&')
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.filter_map(|part| {
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if let [key, val] = part.splitn(2, '=').collect::<Vec<&str>>()[..] {
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Some((key, val))
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} else {
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None
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}
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})
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.collect()
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})
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.unwrap_or_default()
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}
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}
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