<?php

namespace App\Http\Controllers;

use App\Models\Category;
use App\Models\Favorite;
use App\Services\CarRecommendationService;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;

class CategoryController extends Controller
{
    public function index()
    {
        Category::releaseExpiredReservations();

        $categories = Category::orderBy('created_at', 'desc')->get();

        return view('admin.kategori', compact('categories'));
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'name' => 'required|string|max:255',
            'description' => 'required|string|max:1000',
            'merk' => 'nullable|string|max:255',
            'model' => 'nullable|string|max:255',
            'kategori' => 'nullable|string|max:255',
            'price' => 'required|numeric|min:0',
            'year' => 'required|integer|min:1900|max:' . date('Y'),
            'mesin_cc' => 'nullable|integer|min:0',
            'transmisi' => 'nullable|string|max:255',
            'bahan_bakar' => 'nullable|string|max:255',
            'status' => 'required|in:available,reserved,sold',
            'image' => 'nullable|image|mimes:jpeg,png,jpg,gif|max:2048',
        ], [
            'name.required' => 'Nama kategori wajib diisi.',
            'description.required' => 'Deskripsi kategori wajib diisi.',
            'price.required' => 'Harga mobil wajib diisi.',
            'price.numeric' => 'Harga mobil harus berupa angka.',
            'price.min' => 'Harga mobil tidak boleh negatif.',
            'year.required' => 'Tahun mobil wajib diisi.',
            'year.integer' => 'Tahun mobil harus berupa angka.',
            'year.min' => 'Tahun mobil tidak valid.',
            'year.max' => 'Tahun mobil tidak valid.',
            'status.required' => 'Status mobil wajib dipilih.',
            'status.in' => 'Status mobil tidak valid.',
            'image.image' => 'File harus berupa gambar.',
            'image.mimes' => 'Format gambar harus jpeg, png, jpg, atau gif.',
            'image.max' => 'Ukuran gambar maksimal 2MB.',
        ]);

        if ($request->hasFile('image')) {
            $validated['image'] = $request->file('image')->store('categories', 'public');
        }

        Category::create($validated);

        return redirect()->route('kategori')->with('success', 'Kategori berhasil ditambahkan.');
    }

    public function edit(Category $category)
    {
        return view('admin.kategori-edit', compact('category'));
    }

    public function update(Request $request, Category $category)
    {
        $validated = $request->validate([
            'name' => 'required|string|max:255',
            'description' => 'required|string|max:1000',
            'merk' => 'nullable|string|max:255',
            'model' => 'nullable|string|max:255',
            'kategori' => 'nullable|string|max:255',
            'price' => 'required|numeric|min:0',
            'year' => 'required|integer|min:1900|max:' . date('Y'),
            'mesin_cc' => 'nullable|integer|min:0',
            'transmisi' => 'nullable|string|max:255',
            'bahan_bakar' => 'nullable|string|max:255',
            'status' => 'required|in:available,reserved,sold',
            'image' => 'nullable|image|mimes:jpeg,png,jpg,gif|max:2048',
        ], [
            'name.required' => 'Nama kategori wajib diisi.',
            'description.required' => 'Deskripsi kategori wajib diisi.',
            'price.required' => 'Harga mobil wajib diisi.',
            'price.numeric' => 'Harga mobil harus berupa angka.',
            'price.min' => 'Harga mobil tidak boleh negatif.',
            'year.required' => 'Tahun mobil wajib diisi.',
            'year.integer' => 'Tahun mobil harus berupa angka.',
            'year.min' => 'Tahun mobil tidak valid.',
            'year.max' => 'Tahun mobil tidak valid.',
            'status.required' => 'Status mobil wajib dipilih.',
            'status.in' => 'Status mobil tidak valid.',
            'image.image' => 'File harus berupa gambar.',
            'image.mimes' => 'Format gambar harus jpeg, png, jpg, atau gif.',
            'image.max' => 'Ukuran gambar maksimal 2MB.',
        ]);

        if ($request->hasFile('image')) {
            if ($category->image) {
                Storage::disk('public')->delete($category->image);
            }
            $validated['image'] = $request->file('image')->store('categories', 'public');
        }

        $category->update($validated);

        return redirect()->route('kategori')->with('success', 'Kategori berhasil diperbarui.');
    }

    public function destroy(Category $category)
    {
        if ($category->image) {
            Storage::disk('public')->delete($category->image);
        }

        $category->delete();

        return redirect()->route('kategori')->with('success', 'Kategori berhasil dihapus.');
    }

    public function userIndex(Request $request, CarRecommendationService $recommendationService)
    {
        Category::releaseExpiredReservations();

        $budget = $request->query('budget');
        $budgetValue = is_numeric($budget) ? (float) $budget : null;
        $year = $request->query('year');
        $yearValue = is_numeric($year) ? (int) $year : null;
        $mesinCc = $request->query('mesin_cc');
        $mesinCcValue = is_numeric($mesinCc) ? (int) $mesinCc : null;

        $categories = Category::where('status', 'available')->orderBy('created_at', 'desc')->get();
        $hasExactBudgetMatch = false;
        $recommendationSource = null;
        $recommendationMeta = null;

        if ($budgetValue) {
            $recommendation = $recommendationService->recommendForBudget($budgetValue, 50, [
                'year' => $yearValue,
                'mesin_cc' => $mesinCcValue,
            ]);
            $recommended = $recommendation['cars'];
            $hasExactBudgetMatch = $recommendation['has_exact_budget_match'];
            $recommendationSource = $recommendation['source'];
            $recommendationMeta = $recommendation['meta'];
        } else {
            $recommended = Category::where('status', 'available')
                ->orderBy('created_at', 'desc')
                ->get();
        }

        return view('user.cars', compact(
            'categories',
            'recommended',
            'budget',
            'year',
            'mesinCc',
            'hasExactBudgetMatch',
            'recommendationSource',
            'recommendationMeta'
        ));
    }

    public function allCars()
    {
        Category::releaseExpiredReservations();

        $categories = Category::where('status', 'available')
            ->orderBy('created_at', 'desc')
            ->paginate(12);

        return view('user.all-cars', compact('categories'));
    }

    public function budgetCars(Request $request, CarRecommendationService $recommendationService)
    {
        Category::releaseExpiredReservations();

        $budget = $request->query('budget');
        $budgetValue = is_numeric($budget) ? (float) $budget : null;
        $year = $request->query('year');
        $yearValue = is_numeric($year) ? (int) $year : null;
        $mesinCc = $request->query('mesin_cc');
        $mesinCcValue = is_numeric($mesinCc) ? (int) $mesinCc : null;
        $availableCount = Category::where('status', 'available')->count();
        $hasExactBudgetMatch = false;
        $recommendationSource = null;
        $recommendationMeta = null;
        $recommended = collect();

        if ($budgetValue) {
            $recommendation = $recommendationService->recommendForBudget($budgetValue, 50, [
                'year' => $yearValue,
                'mesin_cc' => $mesinCcValue,
            ]);
            $recommended = $recommendation['cars'];
            $hasExactBudgetMatch = $recommendation['has_exact_budget_match'];
            $recommendationSource = $recommendation['source'];
            $recommendationMeta = $recommendation['meta'];
        }

        return view('user.budget-cars', compact(
            'budget',
            'year',
            'mesinCc',
            'availableCount',
            'recommended',
            'hasExactBudgetMatch',
            'recommendationSource',
            'recommendationMeta'
        ));
    }

    public function show(Category $category)
    {
        Category::releaseExpiredReservations();
        $category->refresh();

        return view('user.car-detail', compact('category'));
    }

    public function addToFavorites(Category $category)
    {
        Category::releaseExpiredReservations();
        $category->refresh();

        $username = auth()->user()->username;

        if ($category->status !== 'available') {
            return response()->json(['message' => 'Mobil ini sedang tidak tersedia.'], 422);
        }

        // Check if already favorited
        if (Favorite::where('username', $username)->where('category_id', $category->id)->exists()) {
            return response()->json(['message' => 'Already in favorites'], 409);
        }

        Favorite::create([
            'username' => $username,
            'category_id' => $category->id,
        ]);

        return response()->json(['message' => 'Added to favorites']);
    }

    public function removeFromFavorites(Category $category)
    {
        $username = auth()->user()->username;

        Favorite::where('username', $username)
                ->where('category_id', $category->id)
                ->delete();

        return response()->json(['message' => 'Removed from favorites']);
    }

}