From 7465a6b93f1a7dd0dcc4db74d2b30a814e2053a0 Mon Sep 17 00:00:00 2001
From: Valentin Tolmer <valentin@tolmer.fr>
Date: Tue, 1 Jun 2021 17:30:57 +0200
Subject: [PATCH] Add a form to create users

---
 app/src/api.rs         |  18 ++++++
 app/src/app.rs         |  20 +++++--
 app/src/create_user.rs | 128 +++++++++++++++++++++++++++++++++++++++++
 app/src/lib.rs         |   1 +
 4 files changed, 163 insertions(+), 4 deletions(-)
 create mode 100644 app/src/create_user.rs

diff --git a/app/src/api.rs b/app/src/api.rs
index 3e95476..91d0543 100644
--- a/app/src/api.rs
+++ b/app/src/api.rs
@@ -97,4 +97,22 @@ impl HostService {
         });
         FetchService::fetch_with_options(request, get_default_options(), handler)
     }
+
+    pub fn create_user(
+        request: CreateUserRequest,
+        callback: Callback<Result<()>>,
+    ) -> Result<FetchTask> {
+        let url = "/api/users/create";
+        let request = Request::post(url)
+            .header("Content-Type", "application/json")
+            .body(Json(&request))?;
+        let handler = create_handler(callback, |status, data: String| {
+            if status.is_success() {
+                Ok(())
+            } else {
+                Err(anyhow!("Could not create a user: [{}]: {}", status, data))
+            }
+        });
+        FetchService::fetch_with_options(request, get_default_options(), handler)
+    }
 }
diff --git a/app/src/app.rs b/app/src/app.rs
index dae4839..c3f633c 100644
--- a/app/src/app.rs
+++ b/app/src/app.rs
@@ -1,11 +1,12 @@
-use crate::cookies::get_cookie;
-use crate::login::LoginForm;
-use crate::logout::LogoutButton;
-use crate::user_table::UserTable;
+use crate::{
+    cookies::get_cookie, create_user::CreateUserForm, login::LoginForm, logout::LogoutButton,
+    user_table::UserTable,
+};
 use yew::prelude::*;
 use yew::services::ConsoleService;
 use yew_router::{
     agent::{RouteAgentDispatcher, RouteRequest},
+    components::RouterAnchor,
     route::Route,
     router::Router,
     service::RouteService,
@@ -30,10 +31,14 @@ pub enum AppRoute {
     Login,
     #[to = "/users"]
     ListUsers,
+    #[to = "/create_user"]
+    CreateUser,
     #[to = "/"]
     Index,
 }
 
+type Link = RouterAnchor<AppRoute>;
+
 impl Component for App {
     type Message = Msg;
     type Properties = ();
@@ -91,10 +96,17 @@ impl Component for App {
                           AppRoute::Login => html! {
                               <LoginForm on_logged_in=link.callback(Msg::Login)/>
                           },
+                          AppRoute::CreateUser => html! {
+                              <div>
+                                <LogoutButton on_logged_out=link.callback(|_| Msg::Logout) />
+                                <CreateUserForm/>
+                              </div>
+                          },
                           AppRoute::Index | AppRoute::ListUsers => html! {
                               <div>
                                 <LogoutButton on_logged_out=link.callback(|_| Msg::Logout) />
                                 <UserTable />
+                                <Link route=AppRoute::CreateUser>{"Create a user"}</Link>
                               </div>
                           }
                       }
diff --git a/app/src/create_user.rs b/app/src/create_user.rs
new file mode 100644
index 0000000..32ead31
--- /dev/null
+++ b/app/src/create_user.rs
@@ -0,0 +1,128 @@
+use crate::api::HostService;
+use anyhow::Result;
+use lldap_model::*;
+use yew::prelude::*;
+use yew::services::{fetch::FetchTask, ConsoleService};
+use yew_router::{
+    agent::{RouteAgentDispatcher, RouteRequest},
+    route::Route,
+};
+
+pub struct CreateUserForm {
+    link: ComponentLink<Self>,
+    route_dispatcher: RouteAgentDispatcher,
+    node_ref: NodeRef,
+    error: Option<anyhow::Error>,
+    // Used to keep the request alive long enough.
+    _task: Option<FetchTask>,
+}
+
+pub enum Msg {
+    CreateUserResponse(Result<()>),
+    SubmitForm,
+}
+
+impl CreateUserForm {
+    fn create_user(&mut self, req: CreateUserRequest) {
+        match HostService::create_user(req, self.link.callback(Msg::CreateUserResponse)) {
+            Ok(task) => self._task = Some(task),
+            Err(e) => {
+                self._task = None;
+                ConsoleService::log(format!("Error trying to create user: {}", e).as_str())
+            }
+        };
+    }
+}
+
+impl Component for CreateUserForm {
+    type Message = Msg;
+    type Properties = ();
+
+    fn create(_: Self::Properties, link: ComponentLink<Self>) -> Self {
+        Self {
+            link,
+            route_dispatcher: RouteAgentDispatcher::new(),
+            node_ref: NodeRef::default(),
+            error: None,
+            _task: None,
+        }
+    }
+
+    fn update(&mut self, msg: Self::Message) -> ShouldRender {
+        match msg {
+            Msg::SubmitForm => {
+                use wasm_bindgen::JsCast;
+                let document = web_sys::window().unwrap().document().unwrap();
+                let get_element = |name: &str| {
+                    document
+                        .get_element_by_id(name)
+                        .unwrap()
+                        .dyn_into::<web_sys::HtmlInputElement>()
+                        .unwrap()
+                        .value()
+                };
+                let req = CreateUserRequest {
+                    user_id: get_element("username"),
+                    email: get_element("email"),
+                    display_name: Some(get_element("displayname")),
+                    first_name: Some(get_element("firstname")),
+                    last_name: Some(get_element("lastname")),
+                    password: get_element("password"),
+                };
+                self.create_user(req);
+            }
+            Msg::CreateUserResponse(Ok(())) => {
+                self.route_dispatcher
+                    .send(RouteRequest::ChangeRoute(Route::new_no_state(
+                        "/list_users",
+                    )));
+            }
+            Msg::CreateUserResponse(Err(e)) => {
+                ConsoleService::warn(&format!("Error listing users: {}", e));
+            }
+        }
+        true
+    }
+
+    fn change(&mut self, _: Self::Properties) -> ShouldRender {
+        false
+    }
+
+    fn view(&self) -> Html {
+        html! {
+            <form ref=self.node_ref.clone() onsubmit=self.link.callback(|e: FocusEvent| { e.prevent_default(); Msg::SubmitForm })>
+                <div>
+                    <label for="username">{"User name:"}</label>
+                    <input type="text" id="username" />
+                </div>
+                <div>
+                    <label for="email">{"Email:"}</label>
+                    <input type="text" id="email" />
+                </div>
+                <div>
+                    <label for="displayname">{"Display name:"}</label>
+                    <input type="text" id="displayname" />
+                </div>
+                <div>
+                    <label for="firstname">{"First name:"}</label>
+                    <input type="text" id="firstname" />
+                </div>
+                <div>
+                    <label for="lastname">{"Last name:"}</label>
+                    <input type="text" id="lastname" />
+                </div>
+                <div>
+                    <label for="password">{"Password:"}</label>
+                    <input type="password" id="password" />
+                </div>
+                <button type="submit">{"Login"}</button>
+                <div>
+                { if let Some(e) = &self.error {
+                    html! { e.to_string() }
+                  } else { html! {} }
+                }
+                </div>
+            </form>
+        }
+    }
+}
diff --git a/app/src/lib.rs b/app/src/lib.rs
index a3d8d5f..12fe7d0 100644
--- a/app/src/lib.rs
+++ b/app/src/lib.rs
@@ -2,6 +2,7 @@
 mod api;
 mod app;
 mod cookies;
+mod create_user;
 mod login;
 mod logout;
 mod user_table;