<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use App\Http\Requests\Admin\StoreAttributeRequest;
use App\Http\Requests\Admin\UpdateAttributeRequest;
use App\Models\Attribute;
use Illuminate\Http\RedirectResponse;
use Illuminate\Http\Request;
use Illuminate\Support\Str;
use Illuminate\View\View;

class AttributeController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index(Request $request): View
    {
        $query = Attribute::with('values')->withCount('values');

        if ($request->filled('search')) {
            $search = $request->get('search');
            $query->where('name', 'like', "%{$search}%");
        }

        if ($request->filled('status')) {
            $status = $request->get('status');
            if ($status === 'active') {
                $query->where('status', 'active');
            } elseif ($status === 'inactive') {
                $query->where('status', 'inactive');
            }
        }

        $attributes = $query
            ->orderBy('name')
            ->paginate(15)
            ->withQueryString();

        return view('admin.attributes.index', compact('attributes'));
    }

    /**
     * Show the form for creating a new resource.
     */
    public function create(): View
    {
        return view('admin.attributes.create');
    }

    /**
     * Store a newly created resource in storage.
     */
    public function store(StoreAttributeRequest $request): RedirectResponse
    {
        $data = $request->validated();
        $data['slug'] = Str::slug($data['name']);

        Attribute::create($data);

        return redirect()->route('admin.attributes.index')
            ->with('success', 'Attribute created successfully!');
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(Attribute $attribute): View
    {
        $attribute->load('values');
        return view('admin.attributes.edit', compact('attribute'));
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(UpdateAttributeRequest $request, Attribute $attribute): RedirectResponse
    {
        $data = $request->validated();

        if (isset($data['name']) && $data['name'] !== $attribute->name) {
            $data['slug'] = Str::slug($data['name']);
        }

        $attribute->update($data);

        return redirect()->route('admin.attributes.index')
            ->with('success', 'Attribute updated successfully!');
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(Attribute $attribute): RedirectResponse
    {
        // Check if attribute has values
        $valueCount = $attribute->values()->count();
        if ($valueCount > 0) {
            return redirect()->route('admin.attributes.index')
                ->with('error', "Cannot delete attribute. It has {$valueCount} value(s). Please delete or reassign values first.");
        }

        $attribute->delete();

        return redirect()->route('admin.attributes.index')
            ->with('success', 'Attribute deleted successfully!');
    }
}