gamenight/backend/src/api.rs

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use crate::schema;
use crate::schema::DbConn;
use crate::AppConfig;
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use chrono::Utc;
use jsonwebtoken::decode;
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use jsonwebtoken::encode;
use jsonwebtoken::DecodingKey;
use jsonwebtoken::Validation;
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use jsonwebtoken::{EncodingKey, Header};
use rocket::http::Status;
use rocket::request::Outcome;
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use rocket::request::{FromRequest, Request};
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use rocket::serde::json::{json, Json, Value};
use rocket::State;
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use serde::{Deserialize, Serialize};
use std::borrow::Cow;
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use validator::ValidateArgs;
#[derive(Debug, Responder)]
pub enum ApiResponseVariant {
Status(Status),
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// Redirect(Redirect),
Value(Value),
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// Flash(Flash<Redirect>)
}
#[derive(Serialize, Deserialize, Debug)]
struct ApiResponse {
result: Cow<'static, str>,
#[serde(skip_serializing_if = "Option::is_none")]
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message: Option<Cow<'static, str>>,
#[serde(skip_serializing_if = "Option::is_none")]
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jwt: Option<Cow<'static, str>>,
}
impl ApiResponse {
const SUCCES_RESULT: Cow<'static, str> = Cow::Borrowed("Ok");
const FAILURE_RESULT: Cow<'static, str> = Cow::Borrowed("Failure");
const SUCCES: Self = Self {
result: Self::SUCCES_RESULT,
message: None,
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jwt: None,
};
fn error(message: String) -> Self {
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Self {
result: Self::FAILURE_RESULT,
message: Some(Cow::Owned(message)),
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jwt: None,
}
}
fn login_response(jwt: String) -> Self {
Self {
result: Self::SUCCES_RESULT,
message: None,
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jwt: Some(Cow::Owned(jwt)),
}
}
}
#[derive(Debug)]
pub enum ApiError {
RequestError(String),
}
const AUTH_HEADER: &str = "Authorization";
const BEARER: &str = "Bearer ";
#[rocket::async_trait]
impl<'r> FromRequest<'r> for schema::User {
type Error = ApiError;
async fn from_request(req: &'r Request<'_>) -> Outcome<Self, Self::Error> {
let header = match req.headers().get_one(AUTH_HEADER) {
Some(header) => header,
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None => {
return Outcome::Forward(())
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}
};
if !header.starts_with(BEARER) {
return Outcome::Forward(());
};
let app_config = req.guard::<&State<AppConfig>>().await.unwrap().inner();
let jwt = header.trim_start_matches(BEARER).to_owned();
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let token = match decode::<Claims>(
&jwt,
&DecodingKey::from_secret(app_config.jwt_secret.as_bytes()),
&Validation::default(),
) {
Ok(token) => token,
Err(_) => {
return Outcome::Forward(())
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}
};
let id = token.claims.uid;
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let conn = req.guard::<DbConn>().await.unwrap();
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return Outcome::Success(schema::get_user(conn, id).await);
}
}
#[get("/gamenights")]
pub async fn gamenights(conn: DbConn, _user: schema::User) -> ApiResponseVariant {
let gamenights = schema::get_all_gamenights(conn).await;
ApiResponseVariant::Value(json!(gamenights))
}
#[get("/gamenights", rank = 2)]
pub async fn gamenights_unauthorized() -> ApiResponseVariant {
ApiResponseVariant::Status(Status::Unauthorized)
}
#[post("/gamenight", format = "application/json", data = "<gamenight_json>")]
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pub async fn gamenight_post_json(
conn: DbConn,
user: Option<schema::User>,
gamenight_json: Json<schema::GameNightNoId>,
) -> ApiResponseVariant {
if user.is_some() {
schema::insert_gamenight(conn, gamenight_json.into_inner()).await;
ApiResponseVariant::Value(json!(ApiResponse::SUCCES))
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} else {
ApiResponseVariant::Status(Status::Unauthorized)
}
}
#[post("/register", format = "application/json", data = "<register_json>")]
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pub async fn register_post_json(
conn: DbConn,
register_json: Json<schema::Register>,
) -> ApiResponseVariant {
let register = register_json.into_inner();
let register_clone = register.clone();
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match conn
.run(move |c| register_clone.validate_args((c, c)))
.await
{
Ok(()) => (),
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Err(error) => {
return ApiResponseVariant::Value(json!(ApiResponse::error(error.to_string())))
}
}
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match schema::insert_user(conn, register).await {
Ok(_) => ApiResponseVariant::Value(json!(ApiResponse::SUCCES)),
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Err(err) => ApiResponseVariant::Value(json!(ApiResponse::error(err.to_string()))),
}
}
#[derive(Debug, Serialize, Deserialize)]
struct Claims {
exp: i64,
uid: i32,
role: schema::Role,
}
#[post("/login", format = "application/json", data = "<login_json>")]
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pub async fn login_post_json(
conn: DbConn,
config: &State<AppConfig>,
login_json: Json<schema::Login>,
) -> ApiResponseVariant {
match schema::login(conn, login_json.into_inner()).await {
Err(err) => ApiResponseVariant::Value(json!(ApiResponse::error(err.to_string()))),
Ok(login_result) => {
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if !login_result.result {
return ApiResponseVariant::Value(json!(ApiResponse::error(String::from(
"username and password didn't match"
))));
}
let my_claims = Claims {
exp: Utc::now().timestamp() + chrono::Duration::days(7).num_seconds(),
uid: login_result.id.unwrap(),
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role: login_result.role.unwrap(),
};
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let secret = &config.inner().jwt_secret;
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match encode(
&Header::default(),
&my_claims,
&EncodingKey::from_secret(secret.as_bytes()),
) {
Ok(token) => ApiResponseVariant::Value(json!(ApiResponse::login_response(token))),
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Err(error) => {
ApiResponseVariant::Value(json!(ApiResponse::error(error.to_string())))
}
}
}
}
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}