import path from "path";
import { Server, ServerCredentials, loadPackageDefinition } from "@grpc/grpc-js";
import { loadSync } from "@grpc/proto-loader";
import { ProtoGrpcType } from "./proto/random";
import { RandomHandlers } from "./proto/randomPackage/Random";

interface MainFunction {
(): void;
}

const main: MainFunction = () => {
const server: Server = getServer();
server.bindAsync(
"0.0.0.0:9000",
ServerCredentials.createInsecure(),
(err) => {
if (err) {
console.error(err);
return;
}
console.log("Your server started on port 9000");
server.start();
}
);
};

interface GetServerFunction {
(): Server;
}

const getServer: GetServerFunction = () => {
const server: Server = new Server();
const packageDef: any = loadSync(
path.resolve(__dirname, "./proto/random.proto")
);
const grpcObj = loadPackageDefinition(packageDef) as unknown as ProtoGrpcType;
const randomPackage = grpcObj.randomPackage;

server.addService(randomPackage.Random.service, {
PingPong: (call, callback) => {
console.log(call.request);
callback(null, { message: "Pong" });
},
} as RandomHandlers);

return server;
};

main();