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#[macro_use] extern crate rocket;
use std::{fs::File, io::Write};
use rocket::{http::Status, serde::json::Json, State};
use serde::{Deserialize, Serialize};
mod uid;
use tokio::sync::Mutex;
use uid::UID;
#[derive(Debug, Serialize, Deserialize, Clone, Copy)]
enum Color {
White,
Red,
Blue,
Green,
Yellow,
}
#[derive(Debug, Serialize, Deserialize, Clone)]
struct Token {
color: Color,
amount: usize,
}
impl Token {
pub fn new(color: Color, amount: usize) -> Token {
Token { color, amount }
}
}
#[derive(Debug, Serialize, Deserialize, Clone)]
struct User {
name: String,
id: UID,
tokovec: Vec<Token>
}
impl User {
pub fn new(name: String, id: UID) -> User {
let base_tokens = vec![
Token::new(Color::White, 2),
Token::new(Color::Red, 2),
Token::new(Color::Blue, 2),
Token::new(Color::Green, 2),
Token::new(Color::Yellow, 2),
];
User { name: name, id: id, tokovec: base_tokens }
}
}
const DBSAVE: &str = "db.json";
#[derive(Serialize, Deserialize)]
struct DB {
uid_generator: uid::Generator,
users: Vec<User>,
}
impl DB {
async fn save(&self) -> Result<(), String> {
let mut f = match File::create(DBSAVE) {
Ok(n) => n,
Err(n) => {
match n.kind() {
std::io::ErrorKind::PermissionDenied => panic!("{}: Permission Denied", DBSAVE),
n => return Err(n.to_string()),
}
},
};
let s = match serde_json::to_string(self) {
Ok(n) => n,
Err(n) => return Err(n.to_string()),
};
match f.write(s.as_bytes()) {
Ok(_) => return Ok(()),
Err(n) => return Err(n.to_string()),
};
}
pub fn load() -> Self {
match File::open(DBSAVE) {
Ok(n) => {
match serde_json::from_reader(n) {
Ok(n) => n,
Err(n) => panic!("{}", n),
}
},
Err(n) => match n.kind() {
std::io::ErrorKind::PermissionDenied => panic!("{}: Permission Denied", DBSAVE),
_ => DB::new(),
},
}
}
pub fn new() -> Self {
DB { uid_generator: uid::Generator::new(), users: vec![] }
}
async fn get_user(&self, name: &str) -> Result<User, String> {
for u in self.users.clone() {
if u.name == name {
return Ok(u)
}
}
Err("Not Found".into())
}
async fn new_user(&mut self, name: String, id: UID) -> Result<(), String> {
let user = User::new(name, id);
for u in self.users.clone() {
if u.name == user.name {
return Err("Name taken".to_string())
}
}
self.users.push(user);
self.save().await
}
}
#[get("/")]
async fn index() -> &'static str {
"This is a POKO server"
}
#[get("/user/<user>")]
async fn get_user(user: &str, db: &State<Mutex<DB>>) -> (Status, Result<Json<User>, Json<String>>) {
let db = db.lock().await;
match db.get_user(user).await {
Ok(n) => (Status::Ok, Ok(n.into())),
Err(n) => (Status::NotFound, Err(n.into()))
}
}
fn default_id() -> String {
"random".into()
}
#[derive(Deserialize)]
struct UserForm {
name: String,
#[serde(default = "default_id")]
id: String,
}
#[post("/user", data="<data>", format="json")]
async fn new_user(data: Json<UserForm>, db: &State<Mutex<DB>>) -> (Status, Result<(), Json<String>>) {
let mut db = db.lock().await;
let id;
if data.id == "random".to_string() {
match db.uid_generator.new_uid() {
// Gotten a new UID to make a new user with
Ok(n) => id = Some(n),
// Did not get a new UID
Err(n) => return (Status::InternalServerError, Err(n.clone().into())),
};
} else {
match UID::from(data.id.clone()) {
// Could not make UID from input
Err(n) => return (Status::BadRequest, Err(n.into())),
// Made a UID
Ok(n) => {
if db.uid_generator.is_taken(n) {
// UID is taken
return (Status::BadRequest, Err("UID is taken".to_string().into()));
} else {
// UID is not taken
match db.uid_generator.add_uid(n) {
// Could not add UID for some reason
Err(n) => return (Status::InternalServerError, Err(n.into())),
// Made
Ok(n) => id = Some(n),
};
}
},
};
}
match id {
None => return (Status::InternalServerError, Err("".to_string().into())),
Some(n) => {
match db.new_user(data.name.clone(), n).await {
// User has been created
Ok(_) => return (Status::Ok, Ok(())),
// Could not create user
Err(n) => return (Status::InternalServerError, Err(n.into())),
}
}
}
}
#[launch]
fn rocket() -> _ {
rocket::build().manage(Mutex::new(DB::load())).mount("/", routes![index, new_user, get_user])
}
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