// SPDX-FileCopyrightText: 2025 The Project Pterodactyl Developers
//
// SPDX-License-Identifier: MPL-2.0

import Foundation
import JSONRPC
import LanguageServer
import LanguageServerProtocol
import Logging

final class Server {
	private let connection: JSONRPCClientConnection
	private let eventHandler: EventHandler

	init() {
		let channel = DataChannel.stdio()
		connection = JSONRPCClientConnection(channel)
		eventHandler = EventHandler(connection: connection)
	}

	func start() async throws {
		do {
			Logger.shared.debug("Starting")
			try await startEventLoop()
		} catch {
			Logger.shared.error("Server error: \(error)")
			throw error
		}
	}

	func startEventLoop() async throws {
		for await event in await connection.eventSequence {
			try await handle(event: event)
		}
	}

	func handle(event: ClientEvent) async throws {
		switch event {
		case .request(let id, let request):
			await eventHandler.handleRequest(id: id, request: request)
		case .notification(let notification):
			await eventHandler.handleNotification(notification)
		case .error(_): ()
		}
	}
}

@main
struct PterodactylLanguageServer {
	static func main() async throws {
		let server = Server()
		try await server.start()
	}
}