Реформат путей к эндпоинтам.

Добавлен экстрактор пользователя с дополнительными полями.

Добавлена связь таблиц User и FCM.

Завершена реализация авторизации с помощью VK ID.

Добавлен эндпоинт fcm/update-callback/{version}.

src/routes/vk_id/oauth.rs

@@ -0,0 +1,114 @@
+use self::schema::*;
+use crate::app_state::AppState;
+use crate::routes::schema::{IntoResponseAsError, ResponseError};
+use actix_web::{post, web};
+use serde::Deserialize;
+use std::collections::HashMap;
+use uuid::Uuid;
+
+#[allow(dead_code)]
+#[derive(Deserialize)]
+struct VkIdAuthResponse {
+    refresh_token: String,
+    access_token: String,
+    id_token: String,
+    token_type: String,
+    expires_in: i32,
+    user_id: i32,
+    state: String,
+    scope: String,
+}
+
+#[utoipa::path(responses(
+    (status = OK, body = Response),
+    (
+        status = NOT_ACCEPTABLE,
+        body = ResponseError<ErrorCode>,
+        example = json!({
+            "code": "VK_ID_ERROR",
+            "message": "VK server returned an error"
+        })
+    ),
+))]
+#[post("/oauth")]
+async fn oauth(data: web::Json<Request>, app_state: web::Data<AppState>) -> ServiceResponse {
+    let data = data.into_inner();
+    let state = Uuid::new_v4().simple().to_string();
+
+    let vk_id = &app_state.vk_id;
+    let client_id = vk_id.client_id.clone().to_string();
+
+    let mut params = HashMap::new();
+    params.insert("grant_type", "authorization_code");
+    params.insert("client_id", client_id.as_str());
+    params.insert("state", state.as_str());
+    params.insert("code_verifier", data.code_verifier.as_str());
+    params.insert("code", data.code.as_str());
+    params.insert("device_id", data.device_id.as_str());
+    params.insert("redirect_uri", vk_id.redirect_url.as_str());
+
+    let client = reqwest::Client::new();
+    match client
+        .post("https://id.vk.com/oauth2/auth")
+        .form(&params)
+        .send()
+        .await
+    {
+        Ok(res) => {
+            if !res.status().is_success() {
+                return ErrorCode::VkIdError.into_response();
+            }
+
+            if let Ok(auth_data) = res.json::<VkIdAuthResponse>().await {
+                Ok(Response {
+                    access_token: auth_data.id_token,
+                })
+                .into()
+            } else {
+                ErrorCode::VkIdError.into_response()
+            }
+        }
+        Err(_) => ErrorCode::VkIdError.into_response(),
+    }
+}
+
+mod schema {
+    use actix_macros::{IntoResponseErrorNamed, StatusCode};
+    use derive_more::Display;
+    use serde::{Deserialize, Serialize};
+    use utoipa::ToSchema;
+
+    pub type ServiceResponse = crate::routes::schema::Response<Response, ErrorCode>;
+
+    #[derive(Deserialize, ToSchema)]
+    #[serde(rename_all = "camelCase")]
+    #[schema(as = VkIdOAuth::Request)]
+    pub struct Request {
+        /// Код подтверждения authorization_code
+        pub code: String,
+
+        /// Параметр для защиты передаваемых данных
+        pub code_verifier: String,
+
+        /// Идентификатор устройства
+        pub device_id: String,
+    }
+
+    #[derive(Serialize, ToSchema)]
+    #[serde(rename_all = "camelCase")]
+    #[schema(as = VkIdOAuth::Response)]
+    pub struct Response {
+        /// ID токен
+        pub access_token: String,
+    }
+
+    #[derive(Clone, Serialize, ToSchema, IntoResponseErrorNamed, StatusCode, Display)]
+    #[serde(rename_all = "SCREAMING_SNAKE_CASE")]
+    #[schema(as = VkIdOAuth::ErrorCode)]
+    #[status_code = "actix_web::http::StatusCode::NOT_ACCEPTABLE"]
+    pub enum ErrorCode {
+        /// Сервер VK вернул ошибку
+        #[display("VK server returned an error")]
+        VkIdError,
+    }
+}