import { createRequestHandler } from "@react-router/express";
import { drizzle } from "drizzle-orm/postgres-js";
import express from "express";
import postgres from "postgres";
import type { ServerBuild } from "react-router";
import { RouterContextProvider } from "react-router";

import { DatabaseContext } from "~/database/context";
import * as schema from "~/database/schema";
import { expressValueContext } from "~/contexts/express";

export const app = express();

if (!process.env.DATABASE_URL) throw new Error("DATABASE_URL is required");

const client = postgres(process.env.DATABASE_URL);
const db = drizzle(client, { schema });
app.use((_, __, next) => DatabaseContext.run(db, next));

app.use(
  createRequestHandler({
    build: () => import("virtual:react-router/server-build") as unknown as Promise<ServerBuild>,
    // @ts-ignore -- RouterContextProvider is the correct runtime type but tsconfig.server.json can't resolve the conditional type statically
    getLoadContext() {
      const provider = new RouterContextProvider();
      provider.set(expressValueContext, "Hello from Express");
      return provider as unknown as RouterContextProvider;
    },
  }),
);