import http from "node:http";
import path from "node:path";
import express, { type Express } from "express";
import expressSession from "express-session";
import RedisStore from "connect-redis";
import cors from "cors";
import { Redis } from "./redis";
import APIRoutes_client from "../api/client";
import APIRoutes_admin from "../api/admin";
import { getLogger } from "./Logger";
import bodyParser from "body-parser";
import { handleMetricsEndpoint } from "./Prometheus";
const Logger = getLogger("HTTP");
export const session = expressSession({
secret: process.env.SESSION_SECRET,
resave: false,
saveUninitialized: false,
store: new RedisStore({
client: Redis.client,
prefix: process.env.REDIS_SESSION_PREFIX || "canvas_session:",
}),
cookie: {
httpOnly: false,
...(process.env.NODE_ENV === "development"
? { sameSite: "none" }
: {
secure: true,
}),
},
});
export class ExpressServer {
app: Express;
httpServer: http.Server;
constructor() {
this.app = express();
if (process.env.NODE_ENV === "production") {
this.app.set("trust proxy", 1);
}
this.httpServer = http.createServer(this.app);
if (process.env.SERVE_CLIENT) {
// client is needing to serve
Logger.info(
"Serving client UI at / using root " +
path.join(__dirname, process.env.SERVE_CLIENT)
);
const indexFile = path.join(process.env.SERVE_CLIENT, "index.html");
this.app.use(express.static(process.env.SERVE_CLIENT));
this.app.use("/chat_callback", (req, res) => {
res.sendFile(indexFile);
});
} else {
this.app.get("/", (req, res) => {
res.status(404).contentType("html").send(`
Canvas Server
Canvas Server
This instance is not serving the client
This instance might not be configured correctly
`);
});
}
if (process.env.SERVE_ADMIN) {
// client is needing to serve
Logger.info(
"Serving admin UI at /admin using root " +
path.join(process.env.SERVE_ADMIN)
);
const assetsDir = path.join(process.env.SERVE_ADMIN, "assets");
const indexFile = path.join(process.env.SERVE_ADMIN, "index.html");
this.app.use("/admin/assets", express.static(assetsDir));
this.app.use("/admin*", (req, res) => {
res.sendFile(indexFile);
});
}
if (process.env.NODE_ENV === "development") {
this.app.use(
cors({
origin: [process.env.CLIENT_ORIGIN!, process.env.ADMIN_ORIGIN!],
credentials: true,
})
);
}
this.app.use(session);
this.app.use(bodyParser.json());
this.app.use("/api", APIRoutes_client);
this.app.use("/api/admin", APIRoutes_admin);
this.app.use("/metrics", handleMetricsEndpoint);
this.httpServer.listen(parseInt(process.env.PORT), () => {
Logger.info("Listening on :" + process.env.PORT);
});
}
}