Merge pull request #12 from smolgrrr/rust-server

basic server

pow_server/.gitignore

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+# Ignore all build artifacts
+target/

pow_server/Cargo.toml

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+[package]
+name = "pow_server"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+actix-web = "4.0"
+actix-rt = "2.0"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+nostr = "0.25"

pow_server/src/main.rs

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+use actix_web::{web, App, HttpResponse, HttpServer, Responder, post};
+use serde::Deserialize;
+use std::str::FromStr;
+
+use nostr::prelude::*;
+
+#[derive(Deserialize)]
+struct EventContent {
+    // tags: Vec<Vec<String>>,
+    content: String,
+    pubkey: String,
+}
+
+#[derive(Deserialize)]
+struct PowRequest {
+    req_event: EventContent,
+    difficulty: String,
+}
+
+#[post("/powgen")]
+async fn pow_handler(pow_request: web::Json<PowRequest>) -> impl Responder {
+    let pubkey = match XOnlyPublicKey::from_str(&pow_request.req_event.pubkey) {
+        Ok(pubkey) => pubkey,
+        Err(_) => return HttpResponse::BadRequest().finish(),
+    };
+    let difficulty = match u8::from_str(&pow_request.difficulty) {
+        Ok(difficulty) => difficulty,
+        Err(_) => return HttpResponse::BadRequest().finish(),
+    };
+
+    let builder = EventBuilder::new_text_note(&pow_request.req_event.content, &[]);
+    let event = builder.to_unsigned_pow_event(pubkey, difficulty);
+
+    HttpResponse::Ok().json(event)
+}
+
+
+#[actix_web::main]
+async fn main() -> std::io::Result<()> {
+    HttpServer::new(|| {
+        App::new()
+            .service(pow_handler)
+    })
+    .bind("127.0.0.1:8080")?
+    .run()
+    .await
+}