Use workers-rs and other fixes.

.gitignore

@@ -6,3 +6,5 @@ pkg/
 wasm-pack.log
 worker/generated/
 .DS_Store
+dist
+build

Cargo.toml

@@ -15,6 +15,7 @@ qrcode = "0.14"
 url = "2.5"
 cfg-if = "1.0"
 wasm-bindgen = "0.2"
+worker = "0.0.13"
 
 # The `console_error_panic_hook` crate provides better debugging of panics by
 # logging them with `console.error`. This is great for development, but requires

src/lib.rs

@@ -5,6 +5,7 @@ use qrcode::{render::svg::Color, EcLevel, QrCode};
 use std::{collections::HashMap, str::Split};
 use url::Url;
 use wasm_bindgen::prelude::*;
+use worker::event;
 
 cfg_if! {
     // When the `wee_alloc` feature is enabled, use `wee_alloc` as the global
@@ -16,6 +17,21 @@ cfg_if! {
     }
 }
 
+#[event(fetch)]
+pub async fn fetch(
+    req: worker::Request,
+    _env: worker::Env,
+    _ctx: worker::Context,
+) -> worker::Result<worker::Response> {
+    let svg = handle_request(req.url()?.to_string())?;
+    let response = worker::Response::from_bytes(svg.as_bytes().to_vec())?;
+
+    let mut headers = worker::Headers::new();
+    headers.append("content-type", "image/svg+xml")?;
+
+    Ok(response.with_headers(headers))
+}
+
 struct Config {
     pub min_size: Option<u32>,
     pub max_size: Option<u32>,

wrangler.toml

@@ -1,7 +1,7 @@
 name = "qr"
-type = "rust"
-zone_id = ""
-private = false
-account_id = ""
-route = ""
 workers_dev = true
+compatibility_date = "2024-03-26"
+main = "build/worker/shim.mjs"
+
+[build]
+command = "cargo install -q worker-build && worker-build --release"