Add registration dialog

src/backend/client/register.rs

@@ -0,0 +1,49 @@
+use super::Backend;
+use anyhow::{anyhow, Result};
+use isahc::http::StatusCode;
+use isahc::prelude::*;
+use serde::{Deserialize, Serialize};
+use std::time::Duration;
+
+/// Response body data for captcha requests.
+#[derive(Clone, Debug, Deserialize)]
+#[serde(rename_all = "camelCase")]
+pub struct Captcha {
+    pub id: String,
+    pub question: String,
+}
+
+/// Request body data for user registration.
+#[derive(Serialize, Debug, Clone)]
+#[serde(rename_all = "camelCase")]
+pub struct UserRegistration {
+    pub username: String,
+    pub password: String,
+    pub email: Option<String>,
+    pub captcha_id: String,
+    pub answer: String,
+}
+
+impl Backend {
+    /// Request a new captcha for registration.
+    pub async fn get_captcha(&self) -> Result<Captcha> {
+        let body = self.get("captcha").await?;
+        let captcha = serde_json::from_str(&body)?;
+        Ok(captcha)
+    }
+
+    /// Register a new user and return whether the process suceeded. This will
+    /// not store the new login credentials.
+    pub async fn register(&self, data: UserRegistration) -> Result<bool> {
+        let server_url = self.get_server_url().ok_or(anyhow!("No server URL set!"))?;
+
+        let mut response = Request::post(format!("{}/users", server_url))
+            .timeout(Duration::from_secs(10))
+            .header("Content-Type", "application/json")
+            .body(serde_json::to_string(&data)?)?
+            .send_async()
+            .await?;
+
+        Ok(response.status() == StatusCode::OK)
+    }
+}