import express from "express";
import cors from "cors";
import helmet from "helmet";
import morgan from "morgan";
import rateLimit from "express-rate-limit";
import { createServer } from "http";
import { Server } from "socket.io";
import dotenv from "dotenv";
import fs from "fs";
import path from "path";

const envPath =
	["../.env", "../../.env", ".env"]
		.map((p) => path.resolve(process.cwd(), p))
		.find((p) => fs.existsSync(p)) || ".env";

dotenv.config({ path: envPath });

import { prisma } from "./utils/prisma";
import { errorHandler } from "./middleware/errorHandler";
import { authRouter } from "./routes/auth";
import { userRouter } from "./routes/users";
import { walletRouter } from "./routes/wallet";
import { transactionsRouter } from "./routes/transactions";
import { adminRouter } from "./routes/admin";
import { tautulliRouter } from "./routes/tautulli";
import { overseerRouter } from "./routes/overseer";
import { webhookRouter } from "./routes/webhooks";
import { setupSocketHandlers } from "./services/socket";

const app = express();
const httpServer = createServer(app);
const allowedOrigins = [
	process.env.FRONTEND_URL,
	"https://coop.hobokenchicken.com",
	"http://172.20.1.238:3000",
].filter(Boolean) as string[];

const io = new Server(httpServer, {
	cors: {
		origin: allowedOrigins,
		credentials: true,
	},
});

// Security middleware
app.use(
	helmet({
		crossOriginResourcePolicy: { policy: "cross-origin" },
	}),
);
app.use(
	cors({
		origin: allowedOrigins,
		credentials: true,
	}),
);

// Rate limiting
const limiter = rateLimit({
	windowMs: 15 * 60 * 1000, // 15 minutes
	max: 100, // limit each IP to 100 requests per windowMs
});
app.use(limiter);

// Body parsing
app.use(express.json({ limit: "10mb" }));
app.use(express.urlencoded({ extended: true }));

// Logging
app.use(morgan("combined"));

// Health check
app.get("/health", (_req, res) => {
	res.json({ status: "ok", timestamp: new Date().toISOString() });
});

// API routes
app.use("/api/auth", authRouter);
app.use("/api/users", userRouter);
app.use("/api/wallet", walletRouter);
app.use("/api/transactions", transactionsRouter);
app.use("/api/admin", adminRouter);
app.use("/api/tautulli", tautulliRouter);
app.use("/api/overseer", overseerRouter);
app.use("/webhooks", webhookRouter);

// Error handling
app.use(errorHandler);

// Setup WebSocket handlers
setupSocketHandlers(io);

// Start server
const PORT = process.env.PORT || 3001;

async function startServer() {
	try {
		// Connect to database
		await prisma.$connect();
		console.log("✅ Connected to database");

		// Ensure default settings exist
		const settings = await prisma.systemSettings.findFirst();
		if (!settings) {
			await prisma.systemSettings.create({
				data: {
					id: "default",
				},
			});
			console.log("✅ Created default system settings");
		}

		httpServer.listen(PORT, () => {
			console.log(`🚀 Server running on port ${PORT}`);
			console.log(
				`📊 API URL: ${process.env.API_URL || `http://localhost:${PORT}`}`,
			);
		});
	} catch (error) {
		console.error("Failed to start server:", error);
		process.exit(1);
	}
}

// Graceful shutdown
process.on("SIGTERM", async () => {
	console.log("SIGTERM received, shutting down gracefully");
	await prisma.$disconnect();
	httpServer.close(() => {
		console.log("Server closed");
		process.exit(0);
	});
});

process.on("SIGINT", async () => {
	console.log("SIGINT received, shutting down gracefully");
	await prisma.$disconnect();
	httpServer.close(() => {
		console.log("Server closed");
		process.exit(0);
	});
});

startServer();

export { io };