Initial prototype of web UI -- attempt 2.

This reverts commit 0059e3d133.

.gitignore

@@ -12,3 +12,7 @@ bigboy
 .#*
 *.sqlite
 .tmp*
+node_modules
+dist/
+yarn-error.log
+api/dist

Cargo.toml

@@ -3,4 +3,6 @@
 members = [
     "dicebot",
     "rpc",
+    "api",
+    "web-ui/crate",
 ]

api/Cargo.toml

@@ -0,0 +1,24 @@
+[package]
+name = "tenebrous-api"
+version = "0.1.0"
+authors = ["projectmoon <projectmoon@agnos.is>"]
+edition = "2018"
+
+[dependencies]
+log = "0.4"
+tracing-subscriber = "0.2"
+tonic = { version = "0.4" }
+prost = "0.7"
+thiserror = "1.0"
+substring = "1.4"
+jsonwebtoken = "7.2"
+chrono = "0.4"
+serde = {version = "1.0", features = ["derive"] }
+serde_json = {version = "1.0" }
+tenebrous-rpc = { path = "../rpc" }
+# juniper = { git = "https://github.com/graphql-rust/juniper", branch = "master" }
+# juniper_rocket = { git = "https://github.com/graphql-rust/juniper", branch = "master" }
+juniper = "0.15.7"
+juniper_rocket = "0.8.0"
+rocket = { version = "0.5.0-rc.1", features = ["json", "secrets"] }
+rocket_cors = { git = "https://github.com/lawliet89/rocket_cors", branch = "master" }

api/Rocket.toml

@@ -0,0 +1,10 @@
+[default]
+address = "0.0.0.0"
+port = 10000
+keep_alive = 5
+read_timeout = 5
+write_timeout = 5
+log = "normal"
+limits = { forms = 32768 }
+origins = [ "http://localhost:8000" ]
+jwt_secret = "abc123"

api/src/api.rs

@@ -0,0 +1,90 @@
+use crate::auth::User;
+use crate::config::create_config;
+use crate::schema::{self, Context, Schema};
+use log::info;
+use rocket::http::Method;
+use rocket::{response::content, Rocket, State};
+use rocket_cors::AllowedOrigins;
+use std::env;
+use tracing_subscriber::filter::EnvFilter;
+
+#[rocket::get("/")]
+fn graphiql() -> content::Html<String> {
+    juniper_rocket::graphiql_source("/graphql", None)
+}
+
+#[rocket::get("/graphql?<request>")]
+async fn get_graphql_handler(
+    context: &State<Context>,
+    request: juniper_rocket::GraphQLRequest,
+    schema: &State<Schema>,
+) -> juniper_rocket::GraphQLResponse {
+    request.execute(&*schema, &*context).await
+}
+
+#[rocket::post("/graphql", data = "<request>")]
+async fn post_graphql_handler(
+    context: &State<Context>,
+    request: juniper_rocket::GraphQLRequest,
+    schema: &State<Schema>,
+    user: User,
+) -> juniper_rocket::GraphQLResponse {
+    println!("User is {:?}", user);
+    request.execute(&*schema, &*context).await
+}
+
+pub async fn run() -> Result<(), Box<dyn std::error::Error>> {
+    let filter = if env::var("RUST_LOG").is_ok() {
+        EnvFilter::from_default_env()
+    } else {
+        EnvFilter::new("tenebrous_api=info,tonic=info,rocket=info,rocket_cors=info")
+    };
+
+    tracing_subscriber::fmt().with_env_filter(filter).init();
+
+    log::info!("Setting up gRPC connection");
+    let rocket = Rocket::build();
+    let config = create_config(&rocket);
+
+    info!("Allowed CORS origins: {}", config.allowed_origins.join(","));
+
+    //TODO move to config
+    let client = tenebrous_rpc::create_client("http://localhost:9090", "abc123").await?;
+
+    let context = Context {
+        dicebot_client: client,
+    };
+
+    let schema = schema::schema();
+
+    let allowed_origins = AllowedOrigins::some_exact(&config.allowed_origins);
+
+    let cors = rocket_cors::CorsOptions {
+        allowed_origins,
+        allowed_methods: vec![Method::Get, Method::Post]
+            .into_iter()
+            .map(From::from)
+            .collect(),
+        allow_credentials: true,
+        ..Default::default()
+    }
+    .to_cors()?;
+
+    let routes: Vec<rocket::Route> = {
+        rocket::routes![graphiql, get_graphql_handler, post_graphql_handler]
+            .into_iter()
+            .chain(crate::auth::routes().into_iter())
+            .collect()
+    };
+
+    rocket
+        .mount("/", routes)
+        .attach(cors)
+        .manage(context)
+        .manage(schema)
+        .manage(config)
+        .launch()
+        .await
+        .expect("server to launch");
+    Ok(())
+}

api/src/auth.rs

@@ -0,0 +1,154 @@
+use crate::config::Config;
+use crate::errors::ApiError;
+use chrono::{Duration, Utc};
+use jsonwebtoken::{decode, encode, Algorithm, DecodingKey, EncodingKey, Header, Validation};
+use rocket::response::status::Custom;
+use rocket::{http::SameSite, request::local_cache};
+use rocket::{
+    http::Status,
+    serde::{json::Json, Deserialize, Serialize},
+};
+use rocket::{
+    http::{Cookie, CookieJar},
+    outcome::Outcome,
+};
+use rocket::{
+    outcome::IntoOutcome,
+    request::{self, FromRequest, Request},
+};
+use rocket::{routes, Route, State};
+use substring::Substring;
+
+#[derive(Clone, Debug)]
+pub(crate) struct User {
+    username: String, //TODO more state and such here.
+}
+
+fn decode_token(token: &str, config: &Config) -> Result<Claims, ApiError> {
+    let token_data = decode::<Claims>(
+        token,
+        &DecodingKey::from_secret(config.jwt_secret.as_bytes()),
+        &Validation::default(),
+    )?;
+
+    Ok(token_data.claims)
+}
+
+#[rocket::async_trait]
+impl<'r> FromRequest<'r> for User {
+    type Error = ApiError;
+
+    async fn from_request(req: &'r Request<'_>) -> request::Outcome<Self, Self::Error> {
+        let config: Option<&Config> = req.rocket().state();
+        let auth_header = req
+            .headers()
+            .get_one("Authorization")
+            .map(|auth| auth.substring("Bearer ".len(), auth.len()));
+
+        let token = auth_header
+            .zip(config)
+            .map(|(encoded_token, app_cfg)| decode_token(encoded_token, app_cfg))
+            .unwrap_or(Err(ApiError::AuthenticationDenied("username".to_string())));
+
+        match token {
+            Err(e) => Outcome::Failure((Status::Forbidden, e)),
+            Ok(token) => Outcome::Success(User {
+                username: token.sub,
+            }),
+        }
+    }
+}
+
+pub(crate) fn routes() -> Vec<Route> {
+    routes![login, refresh_token]
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+struct Claims {
+    exp: usize,
+    sub: String,
+}
+
+#[derive(Deserialize)]
+struct LoginRequest<'a> {
+    username: &'a str,
+    password: &'a str,
+}
+
+fn create_token<'a>(
+    username: &str,
+    expiration: Duration,
+    secret: &str,
+) -> Result<String, ApiError> {
+    let expiration = Utc::now()
+        .checked_add_signed(expiration)
+        .expect("clock went awry")
+        .timestamp();
+
+    let claims = Claims {
+        exp: expiration as usize,
+        sub: username.to_owned(),
+    };
+
+    let token = encode(
+        &Header::default(),
+        &claims,
+        &EncodingKey::from_secret(secret.as_bytes()),
+    )?;
+
+    Ok(token)
+}
+
+#[derive(Serialize)]
+struct LoginResponse {
+    jwt_token: String,
+}
+
+/// A strongly-typed representation of the refresh token, used with a
+/// FromRequest trait to decode it from the cookie.
+struct RefreshToken(String);
+
+#[rocket::async_trait]
+impl<'r> FromRequest<'r> for RefreshToken {
+    type Error = ();
+
+    async fn from_request(request: &'r Request<'_>) -> request::Outcome<Self, Self::Error> {
+        let token: Option<RefreshToken> = request
+            .cookies()
+            .get_private("refresh_token")
+            .and_then(|cookie| cookie.value().parse::<String>().ok())
+            .map(|t| RefreshToken(t));
+
+        token.or_forward(())
+    }
+}
+
+#[rocket::post("/login", data = "<request>")]
+async fn login(
+    request: Json<LoginRequest<'_>>,
+    config: &State<Config>,
+    cookies: &CookieJar<'_>,
+) -> Result<Json<LoginResponse>, ApiError> {
+    let token = create_token(request.username, Duration::minutes(1), &config.jwt_secret)?;
+    let refresh_token = create_token(request.username, Duration::weeks(1), &config.jwt_secret)?;
+
+    let mut cookie = Cookie::new("refresh_token", refresh_token);
+    cookie.set_same_site(SameSite::None);
+    cookies.add_private(cookie);
+
+    Ok(Json(LoginResponse { jwt_token: token }))
+}
+
+#[rocket::post("/refresh")]
+async fn refresh_token(
+    config: &State<Config>,
+    refresh_token: Option<RefreshToken>,
+) -> Result<Json<LoginResponse>, ApiError> {
+    let refresh_token = refresh_token.ok_or(ApiError::RefreshTokenMissing)?;
+    let refresh_token = decode_token(&refresh_token.0, config)?;
+
+    //TODO check if token is valid? maybe decode takes care of it.
+    let token = create_token(&refresh_token.sub, Duration::minutes(1), &config.jwt_secret)?;
+
+    Ok(Json(LoginResponse { jwt_token: token }))
+}

api/src/bin/generate_schema.rs

@@ -0,0 +1,4 @@
+use tenebrous_api::schema;
+fn main() {
+    println!("{}", schema::schema().as_schema_language());
+}

api/src/config.rs

@@ -0,0 +1,22 @@
+use rocket::{Phase, Rocket};
+
+/// Config values for the API service. Available as a rocket request
+/// guard.
+pub struct Config {
+    /// The list of origins allowed to access the service.
+    pub allowed_origins: Vec<String>,
+
+    /// The secret key for signing JWTs.
+    pub jwt_secret: String,
+}
+
+pub fn create_config<T: Phase>(rocket: &Rocket<T>) -> Config {
+    let figment = rocket.figment();
+    let allowed_origins: Vec<String> = figment.extract_inner("origins").expect("origins");
+    let jwt_secret: String = figment.extract_inner("jwt_secret").expect("jwt_secret");
+
+    Config {
+        allowed_origins,
+        jwt_secret,
+    }
+}

api/src/errors.rs

@@ -0,0 +1,48 @@
+use rocket::http::ContentType;
+use rocket::response::{self, Responder, Response};
+use rocket::{http::Status, request::Request};
+use std::io::Cursor;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum ApiError {
+    #[error("user account does not exist: {0}")]
+    UserDoesNotExist(String),
+
+    #[error("invalid password for user account: {0}")]
+    AuthenticationDenied(String),
+
+    #[error("authentication token missing from request")]
+    AuthenticationRequired,
+
+    #[error("refresh token missing from request")]
+    RefreshTokenMissing,
+
+    #[error("error decoding token: {0}")]
+    TokenDecodingError(#[from] jsonwebtoken::errors::Error),
+}
+
+#[rocket::async_trait]
+impl<'r> Responder<'r, 'static> for ApiError {
+    fn respond_to(self, _: &'r Request<'_>) -> response::Result<'static> {
+        let status = match self {
+            Self::UserDoesNotExist(_) => Status::Forbidden,
+            Self::AuthenticationRequired => Status::Forbidden,
+            Self::RefreshTokenMissing => Status::Forbidden,
+            Self::AuthenticationDenied(_) => Status::Forbidden,
+            Self::TokenDecodingError(_) => Status::InternalServerError,
+        };
+
+        //TODO certain errors might be too sensitive; need to filter them here.
+        let body = serde_json::json!({
+            "message": self.to_string()
+        })
+        .to_string();
+
+        Response::build()
+            .header(ContentType::JsonApi)
+            .status(status)
+            .sized_body(body.len(), Cursor::new(body))
+            .ok()
+    }
+}

api/src/grpc_web.rs

@@ -0,0 +1,42 @@
+// use std::net::SocketAddr;
+// use tenebrous_rpc::protos::web_api::{
+//     web_api_server::{WebApi, WebApiServer},
+//     RoomsListReply, UserIdRequest,
+// };
+// use tokio::net::TcpListener;
+// use tokio_stream::wrappers::TcpListenerStream;
+// use tonic::{transport::Server, Request, Response, Status};
+
+//grpc-web stuff
+// struct WebApiService;
+
+// #[tonic::async_trait]
+// impl WebApi for WebApiService {
+//     async fn list_room(
+//         &self,
+//         request: Request<UserIdRequest>,
+//     ) -> Result<Response<RoomsListReply>, Status> {
+//         println!("Hello hopefully from a web browser");
+//         Ok(Response::new(RoomsListReply { rooms: vec![] }))
+//     }
+// }
+
+// #[tokio::main]
+// pub async fn grpc_web() -> Result<(), Box<dyn std::error::Error>> {
+//     let addr = SocketAddr::from(([127, 0, 0, 1], 10000));
+//     let listener = TcpListener::bind(addr).await.expect("listener");
+//     let url = format!("http://{}", listener.local_addr().unwrap());
+//     println!("Listening at {}", url);
+
+//     let svc = tonic_web::config()
+//         .allow_origins(vec!["http://localhost:8000"])
+//         .enable(WebApiServer::new(WebApiService));
+
+//     let fut = Server::builder()
+//         .accept_http1(true)
+//         .add_service(svc)
+//         .serve_with_incoming(TcpListenerStream::new(listener));
+
+//     fut.await?;
+//     Ok(())
+// }

api/src/lib.rs

@@ -0,0 +1,5 @@
+pub mod api;
+pub mod auth;
+pub mod config;
+pub mod errors;
+pub mod schema;

api/src/main.rs

@@ -0,0 +1,5 @@
+#[rocket::main]
+pub async fn main() -> Result<(), Box<dyn std::error::Error>> {
+    tenebrous_api::api::run().await?;
+    Ok(())
+}

api/src/schema.rs

@@ -0,0 +1,117 @@
+use juniper::{
+    graphql_object, EmptyMutation, EmptySubscription, FieldResult, GraphQLObject, RootNode,
+};
+use tenebrous_rpc::protos::dicebot::GetVariableRequest;
+use tenebrous_rpc::protos::dicebot::{dicebot_client::DicebotClient, UserIdRequest};
+use tonic::{transport::Channel as TonicChannel, Request as TonicRequest};
+
+/// Hide generic type behind alias.
+pub type DicebotGrpcClient = DicebotClient<TonicChannel>;
+
+/// Single room for a user.
+#[derive(GraphQLObject)]
+#[graphql(description = "A matrix room.")]
+struct Room {
+    room_id: String,
+    display_name: String,
+}
+
+/// List of rooms a user is in.
+#[derive(GraphQLObject)]
+#[graphql(description = "List of rooms a user is in.")]
+struct UserRoomList {
+    user_id: String,
+    rooms: Vec<Room>,
+}
+
+/// A single user variable in a room.
+#[derive(GraphQLObject)]
+#[graphql(description = "User variable in a room.")]
+struct UserVariable {
+    room_id: String,
+    user_id: String,
+    variable_name: String,
+    value: i32,
+}
+
+/// Context passed to every GraphQL function that holds stuff we need
+/// (GRPC client).
+#[derive(Clone)]
+pub struct Context {
+    pub dicebot_client: DicebotGrpcClient,
+}
+
+/// Marker trait to make the context object usable in GraphQL.
+impl juniper::Context for Context {}
+
+#[derive(Clone, Copy, Debug)]
+pub struct Query;
+
+#[graphql_object(
+   context = Context,
+)]
+impl Query {
+    fn api_version() -> &str {
+        "1.0"
+    }
+
+    async fn variable(
+        context: &Context,
+        room_id: String,
+        user_id: String,
+        variable: String,
+    ) -> FieldResult<UserVariable> {
+        let request = TonicRequest::new(GetVariableRequest {
+            room_id,
+            user_id,
+            variable_name: variable,
+        });
+
+        let response = context
+            .dicebot_client
+            .clone()
+            .get_variable(request)
+            .await?
+            .into_inner();
+
+        Ok(UserVariable {
+            user_id: response.user_id,
+            room_id: response.room_id,
+            variable_name: response.variable_name,
+            value: response.value,
+        })
+    }
+
+    async fn user_rooms(context: &Context, user_id: String) -> FieldResult<UserRoomList> {
+        let request = TonicRequest::new(UserIdRequest { user_id });
+
+        let response = context
+            .dicebot_client
+            .clone()
+            .rooms_for_user(request)
+            .await?
+            .into_inner();
+
+        Ok(UserRoomList {
+            user_id: response.user_id,
+            rooms: response
+                .rooms
+                .into_iter()
+                .map(|grpc_room| Room {
+                    room_id: grpc_room.room_id,
+                    display_name: grpc_room.display_name,
+                })
+                .collect(),
+        })
+    }
+}
+
+pub type Schema = RootNode<'static, Query, EmptyMutation<Context>, EmptySubscription<Context>>;
+
+pub fn schema() -> Schema {
+    Schema::new(
+        Query,
+        EmptyMutation::<Context>::new(),
+        EmptySubscription::<Context>::new(),
+    )
+}

dicebot/Cargo.toml

@@ -36,7 +36,7 @@ barrel = { version = "0.6", features = ["sqlite3"] }
 tempfile = "3"
 substring = "1.4"
 fuse-rust = "0.2"
-tonic = "0.4"
+tonic = { version = "0.4" }
 prost = "0.7"
 tenebrous-rpc = { path = "../rpc" }
 

dicebot/src/bin/tonic_client.rs

@@ -10,7 +10,6 @@ async fn create_client(
         .await?;
 
     let bearer = MetadataValue::from_str(&format!("Bearer {}", shared_secret))?;
-
     let client = DicebotClient::with_interceptor(channel, move |mut req: Request<()>| {
         req.metadata_mut().insert("authorization", bearer.clone());
         Ok(req)

dicebot/src/rpc/service.rs

@@ -63,7 +63,12 @@ impl Dicebot for DicebotRpcService {
             .get_user_variable(&request.user_id, &request.room_id, &request.variable_name)
             .await?;
 
-        Ok(Response::new(GetVariableReply { value }))
+        Ok(Response::new(GetVariableReply {
+            user_id: request.user_id.clone(),
+            room_id: request.room_id.clone(),
+            variable_name: request.variable_name.clone(),
+            value,
+        }))
     }
 
     async fn get_all_variables(
@@ -76,7 +81,11 @@ impl Dicebot for DicebotRpcService {
             .get_user_variables(&request.user_id, &request.room_id)
             .await?;
 
-        Ok(Response::new(GetAllVariablesReply { variables }))
+        Ok(Response::new(GetAllVariablesReply {
+            user_id: request.user_id.clone(),
+            room_id: request.user_id.clone(),
+            variables,
+        }))
     }
 
     async fn rooms_for_user(
@@ -111,6 +120,9 @@ impl Dicebot for DicebotRpcService {
 
         rooms.sort_by(sort);
 
-        Ok(Response::new(RoomsListReply { rooms }))
+        Ok(Response::new(RoomsListReply {
+            user_id: user_id.into_string(),
+            rooms,
+        }))
     }
 }

rpc/Cargo.toml

@@ -4,11 +4,17 @@ version = "0.1.0"
 authors = ["projectmoon <projectmoon@agnos.is>"]
 edition = "2018"
 
-# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+# Default is to build tonic and tonic-build as they normally are. The
+# wasm feature is for WebAssmebly, and disables Tonic's transport
+# feature. There is a separate grpc-web-client that can use tonic's
+# requests to make grpc-web requests.
+[features]
+default = ["tonic/default", "tonic-build/default"]
+wasm = [ "tonic/codegen", "tonic/prost", "tonic-build/prost"]
 
 [build-dependencies]
-tonic-build = "0.4"
+tonic-build = { version = "0.4", default_features = false }
 
 [dependencies]
-tonic = "0.4"
+tonic = { version = "0.4", default_features = false }
 prost = "0.7"

rpc/build.rs

@@ -1,4 +1,16 @@
 fn main() -> Result<(), Box<dyn std::error::Error>> {
-    tonic_build::compile_protos("protos/dicebot.proto")?;
-    Ok(())
+    if cfg!(feature = "only-client") {
+        tonic_build::configure().build_server(false).compile(
+            &["protos/dicebot.proto", "protos/web-api.proto"],
+            &["protos/"],
+        )?;
+
+        Ok(())
+    } else {
+        tonic_build::configure().compile(
+            &["protos/dicebot.proto", "protos/web-api.proto"],
+            &["protos/"],
+        )?;
+        Ok(())
+    }
 }

rpc/protos/dicebot.proto

@@ -15,7 +15,10 @@ message GetVariableRequest {
 }
 
 message GetVariableReply {
-  int32 value = 1;
+  string user_id = 1;
+  string room_id = 2;
+  string variable_name = 3;
+  int32 value = 4;
 }
 
 message GetAllVariablesRequest {
@@ -24,7 +27,9 @@ message GetAllVariablesRequest {
 }
 
 message GetAllVariablesReply {
-  map<string, int32> variables = 1;
+  string user_id = 1;
+  string room_id = 2;
+  map<string, int32> variables = 3;
 }
 
 message SetVariableRequest {
@@ -48,5 +53,6 @@ message RoomsListReply {
     string display_name = 2;
   }
 
-  repeated Room rooms = 1;
+  string user_id = 1;
+  repeated Room rooms = 2;
 }

rpc/protos/web-api.proto

@@ -0,0 +1,19 @@
+syntax = "proto3";
+package web_api;
+
+service WebApi {
+  rpc ListRoom(UserIdRequest) returns (RoomsListReply);
+}
+
+message UserIdRequest {
+  string user_id = 1;
+}
+
+message RoomsListReply {
+  message Room {
+    string room_id = 1;
+    string display_name = 2;
+  }
+
+  repeated Room rooms = 1;
+}

rpc/src/lib.rs

@@ -1,5 +1,28 @@
 pub mod protos {
+    pub mod web_api {
+        tonic::include_proto!("web_api");
+    }
+
     pub mod dicebot {
         tonic::include_proto!("dicebot");
     }
 }
+
+use protos::dicebot::dicebot_client::DicebotClient;
+use tonic::{metadata::MetadataValue, transport::Channel as TonicChannel, Request as TonicRequest};
+
+#[cfg(feature = "default")]
+pub async fn create_client(
+    address: &'static str,
+    shared_secret: &str,
+) -> Result<DicebotClient<TonicChannel>, Box<dyn std::error::Error>> {
+    let channel = TonicChannel::from_shared(address)?.connect().await?;
+
+    let bearer = MetadataValue::from_str(&format!("Bearer {}", shared_secret))?;
+    let client = DicebotClient::with_interceptor(channel, move |mut req: TonicRequest<()>| {
+        req.metadata_mut().insert("authorization", bearer.clone());
+        Ok(req)
+    });
+
+    Ok(client)
+}

web-ui/crate/Cargo.lock

@@ -0,0 +1,691 @@
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+ "gloo",
+ "http",
+ "indexmap",
+ "js-sys",
+ "log",
+ "proc-macro-hack",
+ "proc-macro-nested",
+ "ryu",
+ "serde",
+ "serde_json",
+ "slab",
+ "thiserror",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "web-sys",
+ "yew-macro",
+]
+
+[[package]]
+name = "yew-app"
+version = "0.1.0"
+dependencies = [
+ "wasm-bindgen",
+ "yew",
+ "yew-router",
+ "yewdux",
+ "yewtil",
+]
+
+[[package]]
+name = "yew-macro"
+version = "0.17.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "61a9a452e63b6222b28b426dafbc6b207192e0127cdb93324cc7407b8c7e1768"
+dependencies = [
+ "boolinator",
+ "lazy_static",
+ "proc-macro-hack",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
+[[package]]
+name = "yew-router"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "20f46279cd28a50e0e9271352ce6d7be7f10e6ba449c76544985e64222f5e999"
+dependencies = [
+ "cfg-if 0.1.10",
+ "cfg-match",
+ "gloo",
+ "js-sys",
+ "log",
+ "nom",
+ "serde",
+ "serde_json",
+ "wasm-bindgen",
+ "web-sys",
+ "yew",
+ "yew-router-macro",
+ "yew-router-route-parser",
+]
+
+[[package]]
+name = "yew-router-macro"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "768693f16c930d8a8742c2e5f62f258d5a6f0392e8c9265a45c550fac4cbe5a7"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+ "yew-router-route-parser",
+]
+
+[[package]]
+name = "yew-router-route-parser"
+version = "0.14.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "49bf2f66f0e61d65d1637523fa1faedd5aa291cf9cb8d8fb200678472279b672"
+dependencies = [
+ "nom",
+]
+
+[[package]]
+name = "yewdux"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "223ffe9ac0d8ef83429ed639fc2cd159d747080eacbc1d8bc4955d37757509d1"
+dependencies = [
+ "serde",
+ "yew",
+]
+
+[[package]]
+name = "yewtil"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "003f4f533ee696c1f69d753db2c66096dec5700a93bd0bc801ab5891fec041c6"
+dependencies = [
+ "futures",
+ "log",
+ "wasm-bindgen",
+ "wasm-bindgen-futures",
+ "yew",
+]

web-ui/crate/Cargo.toml

@@ -0,0 +1,48 @@
+[package]
+name = "tenebrous-web-ui"
+version = "0.1.0"
+authors = ["projectmoon <projectmoon@agnos.is>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[build-dependencies]
+tenebrous-api = { path = "../../api" }
+
+[dependencies]
+yew = { version = "0.18" }
+yewtil = {version = "0.4" }
+yew-router = {version = "0.15" }
+yewdux = { git = "https://github.com/intendednull/yewdux", rev = "v0.6.2"}
+wasm-bindgen = { version = "0.2" }
+wasm-bindgen-futures = "0.4"
+js-sys = "0.3"
+#graphql_client = { git = "https://github.com/graphql-rust/graphql-client", branch = "master" }
+#graphql_client_web = { git = "https://github.com/graphql-rust/graphql-client", branch = "master" }
+graphql_client = "0.10.0"
+serde = { version = "1.0.67", features = ["derive"] }
+serde_json = {version = "1.0" }
+thiserror = "1.0"
+jsonwebtoken = "7.2"
+
+[dependencies.web-sys]
+version = "0.3"
+features = [
+  'Headers',
+  'Request',
+  'RequestInit',
+  'RequestMode',
+  'Response',
+  'Window',
+]
+
+# hopefully we can add grpc-web later instead of graphql.
+# prost = { version = "0.7.0", default-features = false }
+# tonic = { git = "https://github.com/hyperium/tonic", branch = "master", default-features = false, features = ["codegen", "prost"] }
+# tenebrous-rpc = { path = "../../rpc", default_features = false, features = ["wasm"] }
+
+# [build-dependencies]
+# tonic-build = { version = "0.4", default-features = false, features = ["prost"] }

web-ui/crate/build.rs

@@ -0,0 +1,7 @@
+use std::fs;
+use tenebrous_api::schema;
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    let schema_doc = schema::schema().as_schema_language();
+    fs::write("schema.graphql", schema_doc)?;
+    Ok(())
+}

web-ui/crate/graphql/queries/get_user_variable.graphql

@@ -0,0 +1,8 @@
+query GetUserVariable($roomId: String!, $userId: String!, $variable: String!) {
+  variable(roomId: $roomId, userId: $userId, variable: $variable) {
+    roomId
+    userId
+    value
+    variableName
+  }
+}

web-ui/crate/graphql/queries/rooms_for_user.graphql

@@ -0,0 +1,9 @@
+query RoomsForUser($userId: String!) {
+  userRooms(userId: $userId) {
+    userId
+    rooms {
+      roomId
+      displayName
+    }
+  }
+}

web-ui/crate/graphql/schema.graphql

@@ -0,0 +1,29 @@
+"User variable in a room."
+type UserVariable {
+  roomId: String!
+  userId: String!
+  variableName: String!
+  value: Int!
+}
+
+type Query {
+  apiVersion: String!
+  variable(roomId: String!, userId: String!, variable: String!): UserVariable!
+  userRooms(userId: String!): UserRoomList!
+}
+
+"List of rooms a user is in."
+type UserRoomList {
+  userId: String!
+  rooms: [Room!]!
+}
+
+"A matrix room."
+type Room {
+  roomId: String!
+  displayName: String!
+}
+
+schema {
+  query: Query
+}

web-ui/crate/schema.graphql

@@ -0,0 +1,29 @@
+"User variable in a room."
+type UserVariable {
+  roomId: String!
+  userId: String!
+  variableName: String!
+  value: Int!
+}
+
+type Query {
+  apiVersion: String!
+  variable(roomId: String!, userId: String!, variable: String!): UserVariable!
+  userRooms(userId: String!): UserRoomList!
+}
+
+"List of rooms a user is in."
+type UserRoomList {
+  userId: String!
+  rooms: [Room!]!
+}
+
+"A matrix room."
+type Room {
+  roomId: String!
+  displayName: String!
+}
+
+schema {
+  query: Query
+}

web-ui/crate/src/api/auth.rs

@@ -0,0 +1,88 @@
+use crate::error::UiError;
+use serde::{Deserialize, Serialize};
+use wasm_bindgen::prelude::*;
+use wasm_bindgen::JsCast;
+use wasm_bindgen_futures::JsFuture;
+use web_sys::{console, Request, RequestCredentials, RequestInit, RequestMode, Response};
+
+/// A struct representing an error coming back from the REST API
+/// endpoint. The API server encodes any errors as JSON objects with a
+/// "message" property containing the error, and a bad status code.
+#[derive(Debug, Serialize, Deserialize)]
+struct ApiError {
+    message: Option<String>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+struct LoginResponse {
+    jwt_token: String,
+}
+
+async fn make_request<T>(request: Request) -> Result<T, UiError>
+where
+    T: for<'a> Deserialize<'a>,
+{
+    let window = web_sys::window().unwrap();
+
+    let resp_value = JsFuture::from(window.fetch_with_request(&request)).await?;
+    let resp: Response = resp_value.dyn_into().unwrap();
+    let ok = resp.ok();
+
+    let json = JsFuture::from(resp.json()?).await?;
+    console::log_1(&json);
+    //if ok, attempt to deserialize into T.
+    //if not ok, attempt to deserialize into struct with message, and fall back
+    //if that fails.
+    if ok {
+        let data: T = json.into_serde()?;
+        Ok(data)
+    } else {
+        let data: ApiError = json.into_serde()?;
+        Err(UiError::ApiError(data.message.unwrap_or_else(|| {
+            let status_text = resp.status_text();
+            let status = resp.status();
+            format!("[{}] - {} - unknown api error", status, status_text)
+        })))
+    }
+}
+
+pub async fn login(username: &str, password: &str) -> Result<String, UiError> {
+    let mut opts = RequestInit::new();
+    opts.method("POST");
+    opts.mode(RequestMode::Cors);
+    opts.credentials(RequestCredentials::Include);
+
+    let body = JsValue::from_str(
+        &serde_json::json!({
+            "username": username,
+            "password": password
+        })
+        .to_string(),
+    );
+
+    opts.body(Some(&body));
+    let url = format!("http://localhost:10000/login");
+
+    let request = Request::new_with_str_and_init(&url, &opts)?;
+    request.headers().set("Content-Type", "application/json")?;
+    request.headers().set("Accept", "application/json")?;
+
+    let response: LoginResponse = make_request(request).await?;
+    Ok(response.jwt_token)
+}
+
+pub async fn refresh_jwt() -> Result<String, UiError> {
+    let mut opts = RequestInit::new();
+    opts.method("POST");
+    opts.mode(RequestMode::Cors);
+    opts.credentials(RequestCredentials::Include);
+
+    let url = format!("http://localhost:10000/refresh");
+
+    let request = Request::new_with_str_and_init(&url, &opts)?;
+    request.headers().set("Content-Type", "application/json")?;
+    request.headers().set("Accept", "application/json")?;
+
+    let response: LoginResponse = make_request(request).await?;
+    Ok(response.jwt_token)
+}

web-ui/crate/src/api/dicebot.rs

@@ -0,0 +1,58 @@
+use graphql_client::Client;
+use graphql_client::GraphQLQuery;
+use graphql_client::Response;
+
+use super::ResponseExt;
+use crate::error::UiError;
+
+#[derive(GraphQLQuery)]
+#[graphql(
+    schema_path = "graphql/schema.graphql",
+    query_path = "graphql/queries/get_user_variable.graphql",
+    response_derives = "Debug"
+)]
+struct GetUserVariable;
+
+#[derive(GraphQLQuery)]
+#[graphql(
+    schema_path = "graphql/schema.graphql",
+    query_path = "graphql/queries/rooms_for_user.graphql",
+    response_derives = "Debug"
+)]
+struct RoomsForUser;
+
+pub async fn get_user_variable(
+    jwt_token: &str,
+    room_id: &str,
+    user_id: &str,
+    variable_name: &str,
+) -> Result<i64, UiError> {
+    let mut client = Client::new("http://localhost:10000/graphql");
+    client.add_header("Authorization", &format!("Bearer {}", jwt_token));
+
+    let variables = get_user_variable::Variables {
+        room_id: room_id.to_owned(),
+        user_id: user_id.to_owned(),
+        variable: variable_name.to_owned(),
+    };
+
+    let response = client.call(GetUserVariable, variables).await?;
+    let response: graphql_client::Response<get_user_variable::ResponseData> = response;
+    Ok(response.data()?.variable.value)
+}
+
+pub async fn rooms_for_user(
+    jwt_token: &str,
+    user_id: &str,
+) -> Result<Vec<rooms_for_user::RoomsForUserUserRoomsRooms>, UiError> {
+    let mut client = Client::new("http://localhost:10000/graphql");
+    client.add_header("Authorization", &format!("Bearer {}", jwt_token));
+
+    let variables = rooms_for_user::Variables {
+        user_id: user_id.to_owned(),
+    };
+
+    let response = client.call(RoomsForUser, variables).await?;
+    let response: Response<rooms_for_user::ResponseData> = response;
+    Ok(response.data()?.user_rooms.rooms)
+}

web-ui/crate/src/api/mod.rs

@@ -0,0 +1,37 @@
+use graphql_client_web::Response;
+
+use crate::error::UiError;
+
+pub mod auth;
+pub mod dicebot;
+
+/// Extensions to the GraphQL web response type to add convenience,
+/// particularly when working with errors.
+trait ResponseExt<T> {
+    /// Get the data from the response, or gather all server-side
+    /// errors into a UiError variant.
+    fn data(self) -> Result<T, UiError>;
+}
+
+impl<T> ResponseExt<T> for Response<T> {
+    fn data(self) -> Result<T, UiError> {
+        let data = self.data;
+        let errors = self.errors;
+
+        let data = data.ok_or_else(|| {
+            UiError::ApiError(
+                errors
+                    .map(|errors| {
+                        errors
+                            .into_iter()
+                            .map(|e| e.to_string())
+                            .collect::<Vec<_>>()
+                            .join(",")
+                    })
+                    .unwrap_or("unknown error".into()),
+            )
+        })?;
+
+        Ok(data)
+    }
+}

web-ui/crate/src/components/error_message.rs

@@ -0,0 +1,62 @@
+use crate::api;
+use crate::error::UiError;
+use crate::state::{Action, WebUiDispatcher};
+use std::rc::Rc;
+use wasm_bindgen::{prelude::Closure, JsCast};
+use wasm_bindgen_futures::spawn_local;
+use web_sys::FocusEvent;
+use yew::prelude::*;
+use yewdux::dispatch::Dispatcher;
+use yewdux::prelude::*;
+use yewtil::NeqAssign;
+
+#[doc(hidden)]
+pub(crate) struct YewduxErrorMessage {
+    dispatch: WebUiDispatcher,
+    link: ComponentLink<YewduxErrorMessage>,
+}
+
+pub(crate) type ErrorMessage = WithDispatch<YewduxErrorMessage>;
+
+impl YewduxErrorMessage {
+    fn view_error(&self, error: &str) -> Html {
+        html! {
+            <div class="alert alert-danger" role="alert">
+                { error }
+            </div>
+        }
+    }
+}
+
+impl Component for YewduxErrorMessage {
+    type Message = ();
+    type Properties = WebUiDispatcher;
+
+    fn create(dispatch: Self::Properties, link: ComponentLink<Self>) -> Self {
+        Self { dispatch, link }
+    }
+
+    fn update(&mut self, action: Self::Message) -> ShouldRender {
+        false
+    }
+
+    fn change(&mut self, dispatch: Self::Properties) -> ShouldRender {
+        self.dispatch.neq_assign(dispatch)
+    }
+
+    fn rendered(&mut self, _first_render: bool) {}
+
+    fn view(&self) -> Html {
+        html! {
+            <div>
+            {
+                for self.dispatch.state().error_messages.iter().map(|error| {
+                    self.view_error(error)
+                })
+            }
+            </div>
+        }
+    }
+
+    fn destroy(&mut self) {}
+}

web-ui/crate/src/components/login.rs

@@ -0,0 +1,108 @@
+use crate::api;
+use crate::error::UiError;
+use crate::state::{Action, WebUiDispatcher};
+use std::rc::Rc;
+use wasm_bindgen_futures::spawn_local;
+use web_sys::FocusEvent;
+use yew::prelude::*;
+use yewdux::dispatch::Dispatcher;
+use yewdux::prelude::*;
+use yewtil::NeqAssign;
+
+#[doc(hidden)]
+pub(crate) struct YewduxLogin {
+    dispatch: Rc<WebUiDispatcher>,
+    link: ComponentLink<YewduxLogin>,
+    username: String,
+    password: String,
+}
+
+pub enum LoginAction {
+    UpdateUsername(String),
+    UpdatePassword(String),
+    Login,
+    Noop,
+}
+
+pub(crate) type Login = WithDispatch<YewduxLogin>;
+
+async fn do_login(
+    dispatch: &WebUiDispatcher,
+    username: &str,
+    password: &str,
+) -> Result<(), UiError> {
+    let jwt = api::auth::login(username, password).await?;
+    dispatch.send(Action::Login(jwt));
+    Ok(())
+}
+
+impl Component for YewduxLogin {
+    type Message = LoginAction;
+    type Properties = WebUiDispatcher;
+
+    fn create(dispatch: Self::Properties, link: ComponentLink<Self>) -> Self {
+        Self {
+            dispatch: Rc::new(dispatch),
+            link,
+            username: "".to_string(),
+            password: "".to_string(),
+        }
+    }
+
+    fn update(&mut self, action: Self::Message) -> ShouldRender {
+        match action {
+            LoginAction::UpdateUsername(username) => self.username = username,
+            LoginAction::UpdatePassword(password) => self.password = password,
+            LoginAction::Login => {
+                let dispatch = self.dispatch.clone();
+                let username = self.username.clone();
+                let password = self.password.clone();
+
+                spawn_local(async move {
+                    do_login(&*dispatch, &username, &password).await;
+                });
+            }
+            _ => (),
+        };
+
+        false
+    }
+
+    fn change(&mut self, dispatch: Self::Properties) -> ShouldRender {
+        self.dispatch.neq_assign(Rc::new(dispatch))
+    }
+
+    fn view(&self) -> Html {
+        let do_the_login = self.link.callback(move |e: FocusEvent| {
+            e.prevent_default();
+            LoginAction::Login
+        });
+
+        let update_username = self
+            .link
+            .callback(|e: InputData| LoginAction::UpdateUsername(e.value));
+
+        let update_password = self
+            .link
+            .callback(|e: InputData| LoginAction::UpdatePassword(e.value));
+
+        html! {
+            <div>
+                <form onsubmit=do_the_login>
+                <label for="username">{"Username:"}</label>
+                <input oninput=update_username id="username" name="username" type="text" placeholder="Username" />
+                <label for="password">{"Password:"}</label>
+                <input oninput=update_password id="password" name="password" type="password" placeholder="Password" />
+                <input type="submit" value="Log In" />
+                </form>
+                //<button onclick=refresh_jwt>{ "Refresh JWT" }</button>
+                <div>
+            { "Current JWT: " }
+            { self.dispatch.state().jwt_token.as_ref().unwrap_or(&"[not set]".to_string()) }
+            </div>
+                </div>
+        }
+    }
+
+    fn destroy(&mut self) {}
+}

web-ui/crate/src/components/mod.rs

@@ -0,0 +1,2 @@
+pub mod error_message;
+pub mod login;

web-ui/crate/src/error.rs

@@ -0,0 +1,34 @@
+use graphql_client_web::ClientError;
+use thiserror::Error;
+
+#[derive(Error, Debug)]
+pub enum UiError {
+    #[error("api client error: {0}")]
+    ApiClientError(#[from] ClientError),
+
+    /// General API error, collecting errors from graphql server.
+    #[error("error: {0}")]
+    ApiError(String),
+
+    #[error("login token invalid or expired")]
+    NotLoggedIn,
+
+    #[error("error: {0}")]
+    JsError(String),
+
+    #[error("(de)serialization error: {0}")]
+    SerdeError(#[from] serde_json::Error),
+
+    #[error("JWT validation error: {0}")]
+    JwtError(#[from] jsonwebtoken::errors::Error),
+}
+
+impl From<wasm_bindgen::JsValue> for UiError {
+    fn from(js_error: wasm_bindgen::JsValue) -> UiError {
+        UiError::JsError(
+            js_error
+                .as_string()
+                .unwrap_or("unknown JS error".to_string()),
+        )
+    }
+}

web-ui/crate/src/grpc.rs

@@ -0,0 +1,15 @@
+// async fn test_grpc_web() {
+//     use grpc_web_client::Client as GrpcWebClient;
+//     use tenebrous_rpc::protos::web_api::web_api_client::WebApiClient as TheCloud;
+//     use tenebrous_rpc::protos::web_api::{RoomsListReply, UserIdRequest};
+
+//     let client = GrpcWebClient::new("http://localhost:10000".to_string());
+//     let mut client = TheCloud::new(client);
+
+//     let request = tonic::Request::new(UserIdRequest {
+//         user_id: "WebTonic".into(),
+//     });
+
+//     let response = client.list_room(request).await.unwrap().into_inner();
+//     println!("Room reply: {:?}", response);
+// }

web-ui/crate/src/lib.rs

@@ -0,0 +1,140 @@
+use crate::components::error_message::ErrorMessage;
+use crate::components::login::Login;
+use error::UiError;
+use rooms::RoomList;
+use rooms::YewduxRoomList;
+use state::{Action, AuthState, WebUiDispatcher};
+use wasm_bindgen::prelude::*;
+use wasm_bindgen_futures::spawn_local;
+use yew::prelude::*;
+use yew_router::prelude::*;
+use yew_router::{components::RouterAnchor, prelude::*, switch::Permissive};
+use yewdux::prelude::*;
+use yewtil::NeqAssign;
+
+pub mod api;
+pub mod components;
+pub mod error;
+pub mod grpc;
+pub mod logic;
+pub mod rooms;
+pub mod state;
+
+#[derive(Clone, Debug, Switch)]
+pub enum AppRoute {
+    #[to = "/rooms"]
+    Rooms,
+    #[to = "/rooms/{room_id}"]
+    Room { room_id: String },
+    #[to = "/"]
+    Index,
+}
+
+type AppRouter = Router<AppRoute>;
+type AppAnchor = RouterAnchor<AppRoute>; //For rendering clickable links.
+
+fn render_route(routes: AppRoute) -> Html {
+    match routes {
+        AppRoute::Rooms => {
+            html! {
+                <RoomList />
+            }
+        }
+        AppRoute::Room { room_id } => {
+            html! {
+                <div>{"This is the specific room page."}</div>
+            }
+        }
+        AppRoute::Index => {
+            html! {
+                <div>
+                    <ErrorMessage />
+                    <RoomList />
+                </div>
+            }
+        }
+    }
+}
+
+struct YewduxApp {
+    link: ComponentLink<YewduxApp>,
+    dispatch: WebUiDispatcher,
+}
+
+type App = WithDispatch<YewduxApp>;
+
+async fn refresh_jwt(dispatch: &WebUiDispatcher) {
+    match api::auth::refresh_jwt().await {
+        Ok(jwt) => {
+            dispatch.send(Action::Login(jwt));
+        }
+        Err(e) => {
+            web_sys::console::log_1(&e.to_string().into());
+            dispatch.send(Action::ChangeAuthState(AuthState::NotLoggedIn));
+        }
+    }
+}
+
+impl Component for YewduxApp {
+    type Message = ();
+    type Properties = WebUiDispatcher;
+
+    fn create(dispatch: Self::Properties, link: ComponentLink<Self>) -> Self {
+        Self { dispatch, link }
+    }
+
+    fn update(&mut self, _: Self::Message) -> ShouldRender {
+        false
+    }
+
+    fn change(&mut self, dispatch: Self::Properties) -> ShouldRender {
+        self.dispatch.neq_assign(dispatch)
+    }
+
+    fn rendered(&mut self, first_render: bool) {
+        if first_render {
+            let auth_state = self.dispatch.state().auth_state;
+
+            if auth_state == AuthState::RefreshNeeded {
+                let dispatch = self.dispatch.clone();
+                spawn_local(async move {
+                    refresh_jwt(&dispatch).await;
+                });
+            }
+        }
+    }
+
+    fn view(&self) -> Html {
+        let auth_state = self.dispatch.state().auth_state;
+
+        match auth_state {
+            AuthState::RefreshNeeded => {
+                html! {
+                    <div>{"Loading..."}</div>
+                }
+            }
+            AuthState::NotLoggedIn => {
+                html! {
+                    <Login />
+                }
+            }
+            AuthState::LoggedIn => {
+                html! {
+                    <div>
+                        <div class="alert alert-primary" role="alert">
+                            {"Hello World"}
+                        </div>
+                        <div>
+                            <AppRouter render=AppRouter::render(render_route) />
+                        </div>
+                    </div>
+                }
+            }
+        }
+    }
+}
+
+#[wasm_bindgen(start)]
+pub fn run_app() {
+    yew::start_app::<App>();
+}

web-ui/crate/src/logic.rs

@@ -0,0 +1,68 @@
+use crate::{
+    api,
+    state::{Action, Claims, Room, WebUiDispatcher},
+};
+use jsonwebtoken::dangerous_insecure_decode;
+
+pub(crate) type LogicResult = Result<Vec<Action>, Action>;
+
+pub(crate) trait LogicResultExt {
+    /// Consumes self into the vec of Actions to apply to state,
+    /// either the list of successful actions, or a list containing
+    /// the error action.
+    fn actions(self) -> Vec<Action>;
+}
+
+impl LogicResultExt for LogicResult {
+    fn actions(self) -> Vec<Action> {
+        self.unwrap_or_else(|err_action| vec![err_action])
+    }
+}
+
+fn map_to_vec(action: Option<Action>) -> Vec<Action> {
+    action.map(|a| vec![a]).unwrap_or_default()
+}
+
+async fn refresh_ensured_jwt() -> Result<(String, Option<Action>), Action> {
+    api::auth::refresh_jwt()
+        .await
+        .map(|new_jwt| (new_jwt.clone(), Some(Action::UpdateJwt(new_jwt))))
+        .map_err(|_| Action::Logout)
+}
+
+async fn ensure_jwt(dispatch: &WebUiDispatcher) -> Result<(String, Option<Action>), Action> {
+    //TODO lots of clones here. can we avoid?
+    use jsonwebtoken::errors::ErrorKind;
+    let token = dispatch.state().jwt_token.as_deref().unwrap_or_default();
+    let validation: Result<Claims, _> = dangerous_insecure_decode(token).map(|data| data.claims);
+
+    //If valid, simply return token. If expired, attempt to refresh.
+    //Otherwise, bubble error.
+    let token_and_action = match validation {
+        Ok(_) => (token.to_owned(), None),
+        Err(e) if matches!(e.kind(), ErrorKind::ExpiredSignature) => refresh_ensured_jwt().await?,
+        Err(_) => return Err(Action::Logout), //TODO carry error inside Logout?
+    };
+
+    Ok(token_and_action)
+}
+
+pub(crate) async fn fetch_rooms(dispatch: &WebUiDispatcher) -> LogicResult {
+    let (jwt, jwt_update) = ensure_jwt(dispatch)
+        .await
+        .map(|(token, update)| (token, map_to_vec(update)))?;
+
+    let rooms: Vec<Action> = api::dicebot::rooms_for_user(&jwt, &dispatch.state().username)
+        .await
+        .map_err(|e| Action::ErrorMessage(e))?
+        .into_iter()
+        .map(|room| {
+            Action::AddRoom(Room {
+                room_id: room.room_id,
+                display_name: room.display_name,
+            })
+        })
+        .collect();
+
+    Ok(rooms.into_iter().chain(jwt_update).collect())
+}

web-ui/crate/src/rooms.rs

@@ -0,0 +1,121 @@
+use crate::api;
+use crate::error::UiError;
+use crate::logic::{self, LogicResultExt};
+use crate::state::{Action, DispatchExt, Room, WebUiDispatcher};
+use std::sync::Arc;
+use wasm_bindgen_futures::spawn_local;
+use web_sys::console;
+use yew::prelude::*;
+use yewdux::dispatch::Dispatcher;
+use yewdux::prelude::*;
+use yewtil::NeqAssign;
+
+#[doc(hidden)]
+pub(crate) struct YewduxRoomList {
+    dispatch: WebUiDispatcher,
+    link: ComponentLink<YewduxRoomList>,
+}
+
+pub(crate) type RoomList = WithDispatch<YewduxRoomList>;
+
+fn view_room(room: &Room) -> Html {
+    html! {
+       <li>
+           {&room.display_name} {" ("}{&room.room_id}{")"}
+       </li>
+    }
+}
+
+async fn load_rooms(dispatch: &WebUiDispatcher) -> Result<(), UiError> {
+    let result = logic::fetch_rooms(dispatch).await;
+    let actions = result.actions();
+
+    for action in actions {
+        dispatch.send(action);
+    }
+
+    Ok(())
+}
+
+async fn do_refresh_jwt(dispatch: &WebUiDispatcher) {
+    let refresh = api::auth::refresh_jwt().await;
+
+    match refresh {
+        Ok(jwt) => dispatch.send(Action::UpdateJwt(jwt)),
+        Err(e) => dispatch.dispatch_error(e),
+    }
+}
+
+impl Component for YewduxRoomList {
+    type Message = ();
+    type Properties = WebUiDispatcher;
+
+    fn create(dispatch: Self::Properties, link: ComponentLink<Self>) -> Self {
+        Self { dispatch, link }
+    }
+
+    fn update(&mut self, _msg: Self::Message) -> ShouldRender {
+        false
+    }
+
+    fn change(&mut self, dispatch: Self::Properties) -> ShouldRender {
+        self.dispatch.neq_assign(dispatch)
+    }
+
+    fn rendered(&mut self, first_render: bool) {
+        if first_render {
+            let dispatch = Arc::new(self.dispatch.clone());
+
+            spawn_local(async move {
+                //TODO make macro to report errors in some common way:
+                //handle_errors!(do_things(&*dispatch).await)
+                match load_rooms(&*dispatch).await {
+                    Err(e) => console::log_1(&format!("Error: {:?}", e).into()),
+                    _ => (),
+                }
+            });
+        }
+    }
+
+    fn view(&self) -> Html {
+        let dispatch = Arc::new(self.dispatch.clone());
+        let dispatch2 = dispatch.clone();
+        let dispatch3 = dispatch.clone();
+
+        let the_future = self.link.callback(move |_| {
+            let dispatch = dispatch.clone();
+
+            spawn_local(async move {
+                //TODO make macro to report errors in some common way:
+                //handle_errors!(do_things(&*dispatch).await)
+                match load_rooms(&*dispatch).await {
+                    Err(e) => console::log_1(&format!("Error: {:?}", e).into()),
+                    _ => (),
+                }
+            });
+        });
+
+        let refresh_jwt = self.link.callback(move |_| {
+            let dispatch = dispatch3.clone();
+            spawn_local(async move { do_refresh_jwt(&*dispatch).await });
+        });
+
+        html! {
+            <div>
+                <button onclick=the_future>{ "Fetch Rooms" }</button>
+                <button onclick=refresh_jwt>{ "Refresh JWT" }</button>
+             <ul>
+                {
+                    for self.dispatch.state().rooms.iter().map(|room| {
+                        view_room(room)
+                    })
+                }
+            </ul>
+                </div>
+        }
+    }
+}
+
+//New oath form
+
+//Edit oath

web-ui/crate/src/state.rs

@@ -0,0 +1,123 @@
+use crate::error::UiError;
+use jsonwebtoken::dangerous_insecure_decode;
+use serde::{Deserialize, Serialize};
+use wasm_bindgen::{prelude::Closure, JsCast};
+use yewdux::prelude::*;
+
+#[derive(Debug, Serialize, Deserialize)]
+pub(crate) struct Claims {
+    exp: usize,
+    sub: String,
+}
+
+#[derive(Clone)]
+pub(crate) struct Room {
+    pub room_id: String,
+    pub display_name: String,
+}
+
+#[derive(Clone, Copy, Eq, PartialEq)]
+pub(crate) enum AuthState {
+    NotLoggedIn,
+    LoggedIn,
+    RefreshNeeded,
+}
+
+impl Default for AuthState {
+    fn default() -> Self {
+        AuthState::RefreshNeeded
+    }
+}
+
+#[derive(Default, Clone)]
+pub(crate) struct WebUiState {
+    pub auth_state: AuthState,
+    pub jwt_token: Option<String>,
+    pub rooms: Vec<Room>,
+    pub error_messages: Vec<String>,
+    pub username: String,
+}
+
+pub(crate) enum Action {
+    UpdateJwt(String),
+    AddRoom(Room),
+    ErrorMessage(UiError),
+    ClearErrorMessage,
+    ChangeAuthState(AuthState),
+    Login(String),
+    Logout,
+}
+
+impl WebUiState {
+    fn login(&mut self, jwt_token: String) {
+        //TODO this will not work because we cannot ignore the key to decode the JWT.
+        let jwt_decoding: Result<Claims, _> =
+            dangerous_insecure_decode(&jwt_token).map(|data| data.claims);
+
+        match jwt_decoding {
+            Ok(claims) => {
+                self.jwt_token = Some(jwt_token);
+                self.auth_state = AuthState::LoggedIn;
+                self.username = claims.sub;
+            }
+            Err(e) => self.error_messages.push(e.to_string()),
+        }
+    }
+}
+impl Reducer for WebUiState {
+    type Action = Action;
+
+    fn new() -> Self {
+        Self::default()
+    }
+
+    fn reduce(&mut self, action: Self::Action) -> bool {
+        match action {
+            Action::UpdateJwt(jwt_token) => self.jwt_token = Some(jwt_token),
+            Action::Login(jwt_token) => self.login(jwt_token),
+            Action::Logout => (),
+            Action::AddRoom(room) => self.rooms.push(room.clone()),
+            Action::ChangeAuthState(auth_state) => self.auth_state = auth_state,
+            Action::ErrorMessage(error) => self.error_messages.push(error.to_string()),
+            Action::ClearErrorMessage => {
+                if self.error_messages.len() > 0 {
+                    self.error_messages.remove(0);
+                }
+            }
+        };
+
+        true
+    }
+}
+
+pub(crate) type WebUiDispatcher = DispatchProps<ReducerStore<WebUiState>>;
+
+pub(crate) trait DispatchExt {
+    /// Dispatch an error message and then clear it from the state
+    /// after a few seconds.
+    fn dispatch_error(&self, error: UiError);
+}
+
+impl DispatchExt for WebUiDispatcher {
+    fn dispatch_error(&self, error: UiError) {
+        self.send(Action::ErrorMessage(error));
+
+        // This is a very hacky way to do this. At the very least, we
+        // should not leak memory, and preferably there's a cleaner
+        // way to actually dispatch the clear action.
+        let window = web_sys::window().unwrap();
+        let dispatch = self.clone();
+        let clear_it = Closure::wrap(
+            Box::new(move || dispatch.send(Action::ClearErrorMessage)) as Box<dyn Fn()>
+        );
+
+        window
+            .set_timeout_with_callback_and_timeout_and_arguments_0(
+                clear_it.as_ref().unchecked_ref(),
+                4000,
+            )
+            .expect("could not add clear error handler.");
+
+        clear_it.forget();
+    }
+}

web-ui/index.js

@@ -0,0 +1,6 @@
+//The wasm application is compiled as javascript into the /pkg
+//directory. Webpack then replaces this import with what is actually
+//needed. To import the web assembly, the import FUNCTION must be
+//used. The import STATEMENT does not work.
+import './webui.scss';
+import('./pkg');

web-ui/package.json

@@ -0,0 +1,24 @@
+{
+  "devDependencies": {
+    "@wasm-tool/wasm-pack-plugin": "^1.4.0",
+    "clean-webpack-plugin": "^4.0.0-alpha.0",
+    "css-loader": "^5.2.6",
+    "html-webpack-plugin": "^5.3.1",
+    "postcss": "^8.3.0",
+    "postcss-loader": "^5.3.0",
+    "sass": "^1.34.1",
+    "sass-loader": "^12.0.0",
+    "style-loader": "^2.0.0",
+    "webpack": "^5.37.0",
+    "webpack-cli": "^4.7.0"
+  },
+  "name": "runic",
+  "version": "1.0.0",
+  "description": "Stuff",
+  "main": "index.js",
+  "author": "projectmoon <projectmoon@agnos.is>",
+  "license": "MIT",
+  "dependencies": {
+    "bootstrap": "^5.0.1"
+  }
+}

web-ui/webpack.config.js

@@ -0,0 +1,62 @@
+const path = require("path");
+const { CleanWebpackPlugin } = require('clean-webpack-plugin');
+const WasmPackPlugin = require("@wasm-tool/wasm-pack-plugin");
+const HtmlWebpackPlugin = require('html-webpack-plugin');
+
+console.log('path:', path.resolve(__dirname, 'crate'));
+module.exports = {
+    experiments: {
+        asyncWebAssembly: true
+    },
+    entry: './index.js',
+    mode: "development",
+    output: {
+        path: path.resolve(__dirname, './dist'),
+        filename: 'index_bundle.js',
+    },
+
+    plugins: [
+        new CleanWebpackPlugin(),
+        new HtmlWebpackPlugin({
+            title: 'Tenebrous'
+        }),
+        new WasmPackPlugin({
+            crateDirectory: path.resolve(__dirname, "crate"),
+            outDir: path.resolve(__dirname, "pkg"),
+            args: "--log-level warn",
+            extraArgs: "--no-typescript",
+        })
+    ],
+    module: {
+        rules: [
+            {
+                test: /\.(scss)$/,
+                use: [{
+                    // inject CSS to page
+                    loader: 'style-loader'
+                }, {
+                    // translates CSS into CommonJS modules
+                    loader: 'css-loader'
+                }, {
+                    // Run postcss actions
+                    loader: 'postcss-loader',
+                    options: {
+                        // `postcssOptions` is needed for postcss 8.x;
+                        // if you use postcss 7.x skip the key
+                        postcssOptions: {
+                            // postcss plugins, can be exported to postcss.config.js
+                            plugins: function () {
+                                return [
+                                    require('autoprefixer')
+                                ];
+                            }
+                        }
+                    }
+                }, {
+                    // compiles Sass to CSS
+                    loader: 'sass-loader'
+                }]
+            }
+        ]
+    }
+};

web-ui/webui.scss

@@ -0,0 +1,2 @@
+@import "custom";
+@import "~bootstrap/scss/bootstrap";