<?php

declare(strict_types=1);

namespace App\Controllers;

use App\Core\Controller;
use App\Core\Http\Request;
use App\Core\Http\Response;
use App\Core\Auth;
use App\Models\EmployeeOrder;
use App\Models\DailySession;

class EmployeeOrderController extends Controller
{
    public function store(Request $request, Response $response): Response
    {
        if (!Auth::check()) {
            return $this->redirect('/login');
        }

        $sessionId = (int)$request->post('session_id');
        $userId = (int)Auth::id();
        $generalNotes = trim((string)$request->post('notes', ''));
        $rawItems = $request->post('items', []);

        $session = DailySession::find($sessionId);
        if (!$session) {
            return $this->redirect('/', null, 'Session not found.');
        }

        if ($session['status'] === 'closed' || $session['status'] === 'completed') {
            return $this->redirect("/sessions/{$sessionId}", null, 'Order placement is currently closed for this session.');
        }

        if (empty($rawItems) || !is_array($rawItems)) {
            return $this->redirect("/sessions/{$sessionId}", null, 'Please select at least one menu item.');
        }

        // If user already had an order in this session, remove old order first to update
        $existingOrder = EmployeeOrder::findUserOrderBySession($sessionId, $userId);
        if ($existingOrder) {
            EmployeeOrder::delete((int)$existingOrder['id']);
        }

        $itemsToSave = [];
        foreach ($rawItems as $item) {
            $name = trim((string)($item['item_name'] ?? ''));
            $qty = max(1, (int)($item['quantity'] ?? 1));
            $notes = trim((string)($item['notes'] ?? ''));
            $menuId = !empty($item['session_menu_id']) ? (int)$item['session_menu_id'] : null;

            if (empty($name)) {
                continue;
            }

            $unitPrice = 0.0;
            if ($menuId && !empty($session['menus'])) {
                foreach ($session['menus'] as $m) {
                    if ((int)$m['id'] === $menuId) {
                        $unitPrice = (float)$m['final_price'];
                        break;
                    }
                }
            }

            $itemsToSave[] = [
                'session_menu_id' => $menuId,
                'item_name' => $name,
                'quantity' => $qty,
                'unit_price' => $unitPrice,
                'notes' => $notes,
            ];
        }

        if (empty($itemsToSave)) {
            return $this->redirect("/sessions/{$sessionId}", null, 'No valid menu items selected.');
        }

        try {
            EmployeeOrder::createOrder($sessionId, $userId, $generalNotes, $itemsToSave);
            return $this->redirect("/sessions/{$sessionId}", 'Your lunch order has been submitted successfully!');
        } catch (\Throwable $e) {
            return $this->redirect("/sessions/{$sessionId}", null, 'Failed to submit order: ' . $e->getMessage());
        }
    }

    public function togglePaid(Request $request, Response $response, array $params): Response
    {
        if (!Auth::check()) {
            return $this->redirect('/login');
        }

        $orderId = (int)($params['id'] ?? 0);
        $sessionId = (int)$request->post('session_id');

        EmployeeOrder::togglePaid($orderId);
        return $this->redirect("/sessions/{$sessionId}", 'Payment status updated.');
    }

    public function delete(Request $request, Response $response, array $params): Response
    {
        if (!Auth::check()) {
            return $this->redirect('/login');
        }

        $orderId = (int)($params['id'] ?? 0);
        $sessionId = (int)$request->post('session_id');

        EmployeeOrder::delete($orderId);
        return $this->redirect("/sessions/{$sessionId}", 'Order cancelled.');
    }
}