feat: add api functions and actix webserver

src/handlers/hello.rs

@@ -0,0 +1,15 @@
+use actix_web::{get, post, HttpResponse, Responder};
+
+#[get("/")]
+pub async fn say_hello() -> impl Responder {
+    HttpResponse::Ok().body("Hello world!")
+}
+
+#[post("/echo")]
+pub async fn echo(req_body: String) -> impl Responder {
+    HttpResponse::Ok().body(req_body)
+}
+
+pub async fn manual_hello() -> impl Responder {
+    HttpResponse::Ok().body("Hey there!")
+}

src/handlers/mod.rs

@@ -0,0 +1,2 @@
+pub mod hello;
+pub mod search;

src/handlers/search.rs

@@ -0,0 +1,20 @@
+use actix_web::{web, HttpResponse, Responder};
+use serde::Deserialize;
+
+use crate::types::app_state::AppStateWithSearchEngine;
+
+#[derive(Deserialize)]
+pub struct AddDocumentRequest {
+    url: String,
+    content: String,
+}
+
+pub async fn add_document_to_index(data: web::Data<AppStateWithSearchEngine>, req: web::Json<AddDocumentRequest>) -> impl Responder {
+    data.search_engine.lock().unwrap().index(&req.url, &req.content);
+    HttpResponse::Created().body("Document added to index!")
+}
+
+pub async fn get_number_of_documents(data: web::Data<AppStateWithSearchEngine>) -> impl Responder {
+    let number_of_documents = data.search_engine.lock().unwrap().number_of_documents();
+    HttpResponse::Ok().body(format!("Number of documents: {}", number_of_documents))
+}