Restructure the code to be more readable and better organized

Moreover, the overall navigation structure is finished but database handling is still missing
Also there still needs to be proper styling for all the html files and proper organization

src/main.rs

@@ -2,12 +2,16 @@ use std::collections::HashMap;
 
 use actix_web::{error, web, App, Error, HttpRequest, HttpResponse, HttpServer, Responder, Result};
 use tera::Tera;
+use uuid::Uuid;
+
+const REDIRECT_TIMEOUT_S: i32 = 2;
 
 async fn make_ics_request(req: HttpRequest) -> impl Responder {
-    let id = req.match_info().get("id").unwrap_or("World");
+    let id = req.match_info().get("id").unwrap_or("");
 
     let body = match id {
         "1" => {
+            // TODO: load url based on id from database and make request
             let res = match reqwest::blocking::get("https://cloud.timeedit.net/uu/web/schema/ri6QX6089X8061QQ88Z4758Z08y37424838828461554904Y684XX09894Q8721784ZnX6503.ics") {
                 Ok(r) => match r.text() {
                     Ok(res) => res,
@@ -23,52 +27,143 @@ async fn make_ics_request(req: HttpRequest) -> impl Responder {
     HttpResponse::Ok().content_type("text/calendar").body(body)
 }
 
-async fn edit(
-    tmpl: web::Data<tera::Tera>,
-    query: web::Query<HashMap<String, String>>,
-) -> Result<HttpResponse, Error> {
-    let mut s = "".to_string();
-
-    if query.get("create").is_some() {
-        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);
-            s = tmpl
-                .render("edit.html", &ctx)
-                .map_err(|_| error::ErrorInternalServerError("Template error"))?;
-        }
-        // create new link
-    } else if query.get("edit").is_some() {
-        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);
-            s = tmpl
-                .render("edit.html", &ctx)
-                .map_err(|_| error::ErrorInternalServerError("Template error"))?;
-        }
-        // edit existing link
-    } else if query.get("replace").is_some() {
-        // replace link
-        s = "Replace".to_string();
-    } else {
-        s = tmpl
-            .render("error.html", &tera::Context::new())
-            .map_err(|_| error::ErrorInternalServerError("Template error"))?
-    }
+fn error_page(tmpl: web::Data<tera::Tera>, msg: String) -> Result<HttpResponse, Error> {
+    let mut ctx = tera::Context::new();
+    ctx.insert("message", &msg);
+    let s = tmpl
+        .render("error.html", &ctx)
+        .map_err(|_| error::ErrorInternalServerError("Template error"))?;
 
     Ok(HttpResponse::Ok().content_type("text/html").body(s))
 }
 
+// This is the new edit page:
+async fn edit_page(
+    tmpl: web::Data<tera::Tera>,
+    query: web::Query<HashMap<String, String>>,
+) -> Result<HttpResponse, Error> {
+    // one uuid: 9228c1a4-8956-4f1c-8b5f-53cc575bd78
+    if let Some(uuid_str) = query.get("uuid") {
+        // TODO: based on uuid get link from database
+        let link = "this is the link from the db".to_string();
+        match Uuid::parse_str(uuid_str) {
+            Ok(uuid) => {
+                let mut ctx = tera::Context::new();
+                ctx.insert("link", &link);
+                ctx.insert("uuid", &uuid.to_string());
+                let s = tmpl
+                    .render("edit.html", &ctx)
+                    .map_err(|_| error::ErrorInternalServerError("Template error"))?;
+
+                Ok(HttpResponse::Ok().content_type("text/html").body(s))
+            }
+            Err(err) => error_page(tmpl, format!("uuid parsing error: {}", err.to_string())),
+        }
+    } else {
+        error_page(tmpl, "uuid parameter missing".to_string())
+    }
+}
+
+fn redirect_to_page(
+    tmpl: web::Data<tera::Tera>,
+    message: String,
+    link: String,
+    time_s: i32,
+) -> Result<HttpResponse, Error> {
+    let mut ctx = tera::Context::new();
+    ctx.insert("message", &message);
+    ctx.insert("link", &link);
+    ctx.insert("time", &time_s);
+    let s = tmpl
+        .render("redirect.html", &ctx)
+        .map_err(|_| error::ErrorInternalServerError("Template error"))?;
+
+    Ok(HttpResponse::Ok().content_type("text/html").body(s))
+}
+
+fn redirect_to_edit_page(
+    tmpl: web::Data<tera::Tera>,
+    message: String,
+    uuid: Uuid,
+    time_s: i32,
+) -> Result<HttpResponse, Error> {
+    let mut ctx = tera::Context::new();
+    ctx.insert("message", &message);
+    let link = format!("/edit?uuid={}", uuid.to_string());
+    ctx.insert("time", &time_s);
+    redirect_to_page(tmpl, message, link, time_s)
+}
+
+/*
+fn redirect_to_index_page(
+    tmpl: web::Data<tera::Tera>,
+    query: web::Query<HashMap<String, String>>,
+    message: String,
+    uuid: Uuid,
+    time_s: i32,
+) -> Result<HttpResponse, Error> {
+    // TODO: add option to prefill link
+}
+*/
+
+async fn edit_process(
+    tmpl: web::Data<tera::Tera>,
+    query: web::Query<HashMap<String, String>>,
+) -> Result<HttpResponse, Error> {
+    // TODO: implement handling
+    if let Some(uuid_str) = query.get("uuid") {
+        if let Some(link) = query.get("link") {
+            match Uuid::parse_str(uuid_str) {
+                Ok(uuid) => {
+                    // TODO: actually save entry in database
+                    redirect_to_edit_page(
+                        tmpl,
+                        "Edit successful!".to_string(),
+                        uuid,
+                        REDIRECT_TIMEOUT_S,
+                    )
+                }
+                Err(err) => error_page(tmpl, format!("uuid parsing error: {}", err.to_string())),
+            }
+        } else {
+            error_page(tmpl, "link parameter missing".to_string())
+        }
+    } else {
+        error_page(tmpl, "uuid parameter missing".to_string())
+    }
+}
+
+async fn index_process(
+    tmpl: web::Data<tera::Tera>,
+    query: web::Query<HashMap<String, String>>,
+) -> Result<HttpResponse, Error> {
+    if query.get("create").is_some() {
+        let uuid = Uuid::nil();
+        // TODO: add actuall logic and use proper uuid
+        redirect_to_edit_page(
+            tmpl,
+            "Create was successful".to_string(),
+            uuid,
+            REDIRECT_TIMEOUT_S,
+        )
+    } else if query.get("edit").is_some() {
+        let uuid = Uuid::nil();
+        // TODO: add actuall logic and use proper uuid
+        redirect_to_edit_page(
+            tmpl,
+            "Entry found in database!".to_string(),
+            uuid,
+            REDIRECT_TIMEOUT_S,
+        )
+    } else {
+        error_page(tmpl, "missing create or edit form submission!".to_string())
+    }
+}
+
 // store tera template in application state
 async fn index(tmpl: web::Data<tera::Tera>) -> Result<HttpResponse, Error> {
+    // TODO: add option to prefill link with parameter
+
     let s = tmpl
         .render("index.html", &tera::Context::new())
         .map_err(|_| error::ErrorInternalServerError("Template error"))?;
@@ -87,7 +182,9 @@ async fn main() -> std::io::Result<()> {
             .data(tera)
             .route("/{id}/events.ics", web::get().to(make_ics_request))
             .service(web::resource("/").route(web::get().to(index)))
-            .service(web::resource("/edit").route(web::get().to(edit)))
+            .service(web::resource("/edit").route(web::get().to(edit_page)))
+            .service(web::resource("/index_process").route(web::get().to(index_process)))
+            .service(web::resource("/edit_process").route(web::get().to(edit_process)))
     })
     .bind("127.0.0.1:8080")?
     .run()