app: Add a way for users to edit their info

app/queries/update_user.graphql

@@ -0,0 +1,5 @@
+mutation UpdateUser($user: UpdateUserInput!) {
+  updateUser(user: $user) {
+    ok
+  }
+}

app/src/user_details.rs

@@ -15,16 +15,36 @@ pub struct GetUserDetails;
 
 type User = get_user_details::GetUserDetailsUser;
 
+#[derive(GraphQLQuery)]
+#[graphql(
+    schema_path = "../schema.graphql",
+    query_path = "queries/update_user.graphql",
+    response_derives = "Debug",
+    variables_derives = "Clone",
+    custom_scalars_module = "crate::graphql"
+)]
+pub struct UpdateUser;
+
 pub struct UserDetails {
     link: ComponentLink<Self>,
     username: String,
-    user: Option<Result<User>>,
+    user: Option<User>,
+    // Needed for the form.
+    node_ref: NodeRef,
+    // Error message displayed to the user.
+    error: Option<anyhow::Error>,
+    // The request, while we're waiting for the server to reply.
+    update_request: Option<update_user::UpdateUserInput>,
+    // True iff we just finished updating the user, to display a successful message.
+    update_successful: bool,
     // Used to keep the request alive long enough.
     _task: Option<FetchTask>,
 }
 
 pub enum Msg {
     UserDetailsResponse(Result<get_user_details::ResponseData>),
+    SubmitForm,
+    UpdateFinished(Result<update_user::ResponseData>),
 }
 
 #[derive(yew::Properties, Clone, PartialEq)]
@@ -32,6 +52,11 @@ pub struct Props {
     pub username: String,
 }
 
+#[allow(clippy::ptr_arg)]
+fn not_empty(s: &String) -> bool {
+    !s.is_empty()
+}
+
 impl UserDetails {
     fn get_user_details(&mut self) {
         self._task = HostService::graphql_query::<GetUserDetails>(
@@ -47,6 +72,99 @@ impl UserDetails {
         })
         .ok();
     }
+    fn handle_msg(&mut self, msg: <Self as Component>::Message) -> Result<bool> {
+        self.update_successful = false;
+        match msg {
+            Msg::UserDetailsResponse(Ok(user)) => {
+                self.user = Some(user.user);
+            }
+            Msg::UserDetailsResponse(Err(e)) => {
+                self.error = Some(anyhow!("Error getting user details: {}", e));
+                self.user = None;
+            }
+            Msg::SubmitForm => {
+                let base_user = self.user.as_ref().unwrap();
+                let mut user_input = update_user::UpdateUserInput {
+                    id: self.username.clone(),
+                    email: None,
+                    displayName: None,
+                    firstName: None,
+                    lastName: None,
+                };
+                let mut should_send_form = false;
+                let email = get_element("email")
+                    .filter(not_empty)
+                    .ok_or_else(|| anyhow!("Missing email"))?;
+                if base_user.email != email {
+                    should_send_form = true;
+                    user_input.email = Some(email);
+                }
+                if base_user.display_name != get_element_or_empty("display_name") {
+                    should_send_form = true;
+                    user_input.displayName = Some(get_element_or_empty("display_name"));
+                }
+                if base_user.first_name != get_element_or_empty("first_name") {
+                    should_send_form = true;
+                    user_input.firstName = Some(get_element_or_empty("first_name"));
+                }
+                if base_user.last_name != get_element_or_empty("last_name") {
+                    should_send_form = true;
+                    user_input.lastName = Some(get_element_or_empty("last_name"));
+                }
+                if !should_send_form {
+                    return Ok(false);
+                }
+                self.update_request = Some(user_input.clone());
+                let req = update_user::Variables { user: user_input };
+                self._task = Some(HostService::graphql_query::<UpdateUser>(
+                    req,
+                    self.link.callback(Msg::UpdateFinished),
+                    "Error trying to update user",
+                )?);
+                return Ok(false);
+            }
+            Msg::UpdateFinished(r) => {
+                match r {
+                    Err(e) => return Err(e),
+                    Ok(_) => {
+                        ConsoleService::log("Successfully updated user");
+                        self.update_successful = true;
+                        let user = self.user.as_ref().unwrap();
+                        let new_user = self.update_request.take().unwrap();
+                        self.user = Some(User {
+                            id: user.id.clone(),
+                            email: new_user.email.unwrap_or_else(|| user.email.clone()),
+                            display_name: new_user
+                                .displayName
+                                .unwrap_or_else(|| user.display_name.clone()),
+                            first_name: new_user
+                                .firstName
+                                .unwrap_or_else(|| user.first_name.clone()),
+                            last_name: new_user.lastName.unwrap_or_else(|| user.last_name.clone()),
+                            creation_date: user.creation_date,
+                        });
+                    }
+                };
+            }
+        }
+        Ok(true)
+    }
+}
+
+fn get_element(name: &str) -> Option<String> {
+    use wasm_bindgen::JsCast;
+    Some(
+        web_sys::window()?
+            .document()?
+            .get_element_by_id(name)?
+            .dyn_into::<web_sys::HtmlInputElement>()
+            .ok()?
+            .value(),
+    )
+}
+
+fn get_element_or_empty(name: &str) -> String {
+    get_element(name).unwrap_or_default()
 }
 
 impl Component for UserDetails {
@@ -58,23 +176,26 @@ impl Component for UserDetails {
         let mut table = UserDetails {
             link,
             username: props.username,
+            node_ref: NodeRef::default(),
             _task: None,
             user: None,
+            error: None,
+            update_request: None,
+            update_successful: false,
         };
         table.get_user_details();
         table
     }
 
     fn update(&mut self, msg: Self::Message) -> ShouldRender {
-        match msg {
-            Msg::UserDetailsResponse(Ok(user)) => {
-                self.user = Some(Ok(user.user));
-                true
-            }
-            Msg::UserDetailsResponse(Err(e)) => {
-                self.user = Some(Err(anyhow!("Error getting user details: {}", e)));
+        self.error = None;
+        match self.handle_msg(msg) {
+            Err(e) => {
+                ConsoleService::error(&e.to_string());
+                self.error = Some(e);
                 true
             }
+            Ok(b) => b,
         }
     }
 
@@ -83,20 +204,52 @@ impl Component for UserDetails {
     }
 
     fn view(&self) -> Html {
-        match &self.user {
-            None => html! {{"Loading..."}},
-            Some(Err(e)) => html! {<div>{"Error: "}{e.to_string()}</div>},
-            Some(Ok(u)) => {
+        match (&self.user, &self.error) {
+            (None, None) => html! {{"Loading..."}},
+            (None, Some(e)) => html! {<div>{"Error: "}{e.to_string()}</div>},
+            (Some(u), error) => {
+                html! {
+                    <form ref=self.node_ref.clone() onsubmit=self.link.callback(|e: FocusEvent| { e.prevent_default(); Msg::SubmitForm })>
+                      <div>
+                        <span>{"User ID: "}</span>
+                          <span>{&u.id}</span>
+                      </div>
+                      <div>
+                        <label for="email">{"Email: "}</label>
+                        <input type="text" id="email" value={u.email.clone()} />
+                      </div>
+                      <div>
+                        <label for="display_name">{"Display name: "}</label>
+                        <input type="text" id="display_name" value={u.display_name.clone()} />
+                      </div>
+                      <div>
+                        <label for="first_name">{"First name: "}</label>
+                        <input type="text" id="first_name" value={u.first_name.clone()} />
+                      </div>
+                      <div>
+                        <label for="last_name">{"Last name: "}</label>
+                        <input type="text" id="last_name" value={u.last_name.clone()} />
+                      </div>
+                      <div>
+                        <span>{"Creation date: "}</span>
+                        <span>{&u.creation_date.with_timezone(&chrono::Local)}</span>
+                      </div>
+                      <div>
+                        <button type="submit">{"Update"}</button>
+                      </div>
+                      { if self.update_successful {
+                        html! {
+                          <span>{"Update successful!"}</span>
+                        }
+                      } else if let Some(e) = error {
                         html! {
                           <div>
-                        <div>{"User ID: "} {&u.id}</div>
-                        <div>{"Email: "}{&u.email}</div>
-                        <div>{"Display name: "}{&u.display_name}</div>
-                        <div>{"First name: "}{&u.first_name}</div>
-                        <div>{"Last name: "}{&u.last_name}</div>
-                        <div>{"Creation date: "}{&u.creation_date.with_timezone(&chrono::Local)}</div>
+                            <span>{"Error: "}{e.to_string()}</span>
                           </div>
                         }
+                      } else { html! {} }}
+                    </form>
+                }
             }
         }
     }