// ------------------------------------------------------------
//  Imports
// ------------------------------------------------------------

import { Hono } from "hono";
import { connect } from "mongoose";

// Middlewares
import { logger } from "hono/logger";
import { endpointEventGenerator } from "$lib/middlewares/endpointEventGenerator";

// ------------------------------------------------------------
//  Database healthcheck and program initialization
// ------------------------------------------------------------

// Check if MONGO_URI environment variable is set
if (!process.env.MONGO_URI)
  throw new Error("Missing MONGO_URI environment variable");

// Check if USER_TOKEN environment variable is set
if (!process.env.USER_TOKEN)
  throw new Error("Missing USER_TOKEN environment variable");

console.log("Checking database connection...");

// Check if database connection succeeds
await connect(process.env.MONGO_URI)
  .then(() => {
    console.log("Database connection successful");
  })
  .catch((error) => {
    throw new Error(`Failed to connect to database: ${error.message}`);
  });

// Define new Hono instance and bind routes directory
const app = new Hono()
  .use(logger())
  .use(endpointEventGenerator)
  .route("/", (await import("./routes")).default);

// ------------------------------------------------------------
//  Exports
// ------------------------------------------------------------

export default {
  fetch: app.fetch,
  port: process.env.PORT || 4300,
};