first simple start of using templates

src/main.rs

@@ -1,4 +1,11 @@
-use actix_web::{web, App, HttpRequest, HttpResponse, HttpServer, Responder};
+use std::collections::HashMap;
+
+use actix_http::{body::Body, Response};
+use actix_web::dev::ServiceResponse;
+use actix_web::http::StatusCode;
+use actix_web::middleware::errhandlers::{ErrorHandlerResponse, ErrorHandlers};
+use actix_web::{error, web, App, Error, HttpRequest, HttpResponse, HttpServer, Responder, Result};
+use tera::Tera;
 
 async fn make_ics_request(req: HttpRequest) -> impl Responder {
     let id = req.match_info().get("id").unwrap_or("World");
@@ -20,10 +27,50 @@ async fn make_ics_request(req: HttpRequest) -> impl Responder {
     HttpResponse::Ok().content_type("text/calendar").body(body)
 }
 
+// store tera template in application state
+async fn index(
+    tmpl: web::Data<tera::Tera>,
+    query: web::Query<HashMap<String, String>>,
+) -> Result<HttpResponse, Error> {
+    if query.get("create").is_some() {
+        // create new link
+    } else if query.get("edit").is_some() {
+        // edit existing link
+    } else if query.get("replace").is_some() {
+        // replace link
+    }
+    let s = if let Some(link) = query.get("link") {
+        // submitted form
+        let proxy_link = &"Insert link here".to_owned();
+
+        let mut ctx = tera::Context::new();
+        ctx.insert("link", &link.to_owned());
+        ctx.insert("proxy_link", proxy_link);
+        tmpl.render("edit.html", &ctx)
+            .map_err(|_| error::ErrorInternalServerError("Template error"))?
+    } else {
+        tmpl.render("index.html", &tera::Context::new())
+            .map_err(|_| error::ErrorInternalServerError("Template error"))?
+    };
+    Ok(HttpResponse::Ok().content_type("text/html").body(s))
+}
+
 #[actix_web::main]
 async fn main() -> std::io::Result<()> {
-    HttpServer::new(|| App::new().route("/{id}/events.ics", web::get().to(make_ics_request)))
-        .bind("127.0.0.1:8080")?
-        .run()
-        .await
+    std::env::set_var("RUST_LOG", "actix_web=info");
+
+    println!("Listening on: 127.0.0.1:8080, open browser and visit have a try!");
+    HttpServer::new(|| {
+        let tera = Tera::new(concat!(env!("CARGO_MANIFEST_DIR"), "/templates/**/*")).unwrap();
+
+        App::new()
+            .data(tera)
+            .route("/{id}/events.ics", web::get().to(make_ics_request))
+            .service(web::resource("/").route(web::get().to(index)))
+    })
+    .bind("127.0.0.1:8080")?
+    .run()
+    .await
+
+    //.route("/{id}/events.ics", web::get().to(make_ics_request))
 }