<?php

namespace App\Http\Controllers\admin;

use App\Http\Controllers\Controller;
use App\Http\Requests\MenuRequest;
use App\Repositories\Menu\MenuRepositoryInterface;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\DB;

class MenuController extends Controller
{
    public function __construct(
        public MenuRepositoryInterface $menuRepository
    )
    {
    }

    public function buildMenuOptions($menus, $prefix = '')
    {
        $result = [];

        foreach ($menus as $menu) {
            $result[] = [
                'id' => $menu->id,
                'title' => $prefix . ' ' . $menu->title,
                'route_name' => $menu->route_name,
                'is_active' => $menu->is_active,
                'created_at' => $menu->created_at,
            ];

            if ($menu->children && $menu->children->count() > 0) {
                $result = array_merge($result, $this->buildMenuOptions($menu->children, $prefix . '--'));
            }
        }

        return $result;
    }

    public function index(Request $request)
    {
        $menuOptions = $this->buildMenuOptions(
            $this->menuRepository->getTree()
        );
        $title = 'List Menu';

        return view('admin.menu.index', compact('menuOptions', 'title'));
    }

    public function create()
    {
        $title = 'Add new Menu';
        $menus = $this->menuRepository->getTree();

        $parentMenuOptions = $this->buildMenuOptions($menus);
        return view('admin.menu.add', compact('title', 'parentMenuOptions'));
    }

    public function store(MenuRequest $request)
    {
        $data = $request->validated();

        DB::beginTransaction();
        try {
            $this->menuRepository->store($data);

            DB::commit();
        } catch (\Exception $exception) {
            DB::rollBack();
            return back()->withErrors($exception->getMessage());
        }

        return redirect()->route('menu.index')->with('success', 'Added successfully');
    }

    public function edit($id)
    {
        $menu = $this->menuRepository->find($id);

        if (!$menu) {
            return back()->withErrors('Invalid request');
        }

        $menus = $this->menuRepository->getTree();

        $parentMenuOptions = $this->buildMenuOptions($menus);

        $title = 'Edit Menu';

        return view('admin.menu.edit', compact('title', 'menu', 'parentMenuOptions'));
    }

    public function update(int $id = 0, MenuRequest $request)
    {
        $menu = $this->menuRepository->find($id);

        if (!$menu) {
            return back()->withErrors('Invalid request');
        }
        $request->validated();


        DB::beginTransaction();
        try {
            $this->menuRepository->update($id, $request->all());
            DB::commit();
        } catch (\Exception $exception) {
            DB::rollBack();
            return back()->withErrors($exception->getMessage());
        }
        return redirect()->route('menu.index')->with('success', 'Updated successfully');
    }

    public function destroy(int $id = 0)
    {
        $menu = $this->menuRepository->find($id);

        if (!$menu) {
            return back()->withErrors('Invalid request');
        }

        DB::beginTransaction();
        try {
            $this->menuRepository->delete($id);
            DB::commit();
        } catch (\Exception $exception) {
            DB::rollBack();
            return back()->withErrors($exception->getMessage());
        }
        return redirect()->route('menu.index')->with('success', 'Deleted successfully');
    }
}