<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Models\Banner;
use Illuminate\Support\Facades\Storage;

class BannerController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index()
    {
        $banners = Banner::orderBy('urutan')->get();
        return view('admin.banners.index', compact('banners'));
    }

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

    /**
     * Store a newly created resource in storage.
     */
    public function store(Request $request)
    {
        $request->validate([
            'judul' => 'required|string|max:255',
            'deskripsi' => 'nullable|string',
            'gambar' => 'required|image|max:2048',
            'url' => 'nullable|string|max:255',
            'aktif' => 'required|boolean',
            'tanggal_mulai' => 'nullable|date',
            'tanggal_selesai' => 'nullable|date|after_or_equal:tanggal_mulai',
        ]);

        $data = $request->all();
        
        // Otomatisasi urutan
        $lastBanner = Banner::orderBy('urutan', 'desc')->first();
        $data['urutan'] = $lastBanner ? $lastBanner->urutan + 1 : 1;
        
        // Menangani tanggal kosong
        if (empty($data['tanggal_mulai'])) {
            $data['tanggal_mulai'] = null;
        }
        
        if (empty($data['tanggal_selesai'])) {
            $data['tanggal_selesai'] = null;
        }
        
        if ($request->hasFile('gambar')) {
            $data['gambar'] = $request->file('gambar')->store('banners', 'public');
        }
        
        Banner::create($data);
        
        return redirect()->route('admin.banners.index')->with('success', 'Banner berhasil ditambahkan');
    }

    /**
     * Display the specified resource.
     */
    public function show(Banner $banner)
    {
        return view('admin.banners.show', compact('banner'));
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(Banner $banner)
    {
        return view('admin.banners.edit', compact('banner'));
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(Request $request, Banner $banner)
    {
        $request->validate([
            'judul' => 'required|string|max:255',
            'deskripsi' => 'nullable|string',
            'gambar' => 'nullable|image|max:2048',
            'url' => 'nullable|string|max:255',
            'urutan' => 'nullable|integer|min:1',
            'tanggal_mulai' => 'nullable|date',
            'tanggal_selesai' => 'nullable|date|after_or_equal:tanggal_mulai',
            'aktif' => 'required|boolean',
        ]);

        $data = $request->all();
        
        // Menangani tanggal kosong
        if (empty($data['tanggal_mulai'])) {
            $data['tanggal_mulai'] = null;
        }
        
        if (empty($data['tanggal_selesai'])) {
            $data['tanggal_selesai'] = null;
        }
        
        if ($request->hasFile('gambar')) {
            // Hapus gambar lama jika ada
            if ($banner->gambar) {
                Storage::disk('public')->delete($banner->gambar);
            }
            
            $data['gambar'] = $request->file('gambar')->store('banners', 'public');
        }
        
        $banner->update($data);
        
        return redirect()->route('admin.banners.index')->with('success', 'Banner berhasil diperbarui');
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(Banner $banner)
    {
        // Hapus gambar jika ada
        if ($banner->gambar) {
            Storage::disk('public')->delete($banner->gambar);
        }
        
        $banner->delete();
        
        return redirect()->route('admin.banners.index')->with('success', 'Banner berhasil dihapus');
    }
    
    /**
     * Toggle status banner
     */
    public function toggleStatus(Banner $banner)
    {
        $banner->aktif = !$banner->aktif;
        $banner->save();
        
        return redirect()->route('admin.banners.index')->with('success', 'Status banner berhasil diubah');
    }
    
    /**
     * Move banner up in order
     */
    public function moveUp(Banner $banner)
    {
        $prevBanner = Banner::where('urutan', '<', $banner->urutan)
                            ->orderBy('urutan', 'desc')
                            ->first();
        
        if ($prevBanner) {
            // Swap positions
            $tempUrutan = $prevBanner->urutan;
            $prevBanner->urutan = $banner->urutan;
            $banner->urutan = $tempUrutan;
            
            $prevBanner->save();
            $banner->save();
            
            return redirect()->route('admin.banners.index')->with('success', 'Urutan banner berhasil diubah');
        }
        
        return redirect()->route('admin.banners.index')->with('info', 'Banner sudah berada di urutan teratas');
    }
    
    /**
     * Move banner down in order
     */
    public function moveDown(Banner $banner)
    {
        $nextBanner = Banner::where('urutan', '>', $banner->urutan)
                            ->orderBy('urutan', 'asc')
                            ->first();
        
        if ($nextBanner) {
            // Swap positions
            $tempUrutan = $nextBanner->urutan;
            $nextBanner->urutan = $banner->urutan;
            $banner->urutan = $tempUrutan;
            
            $nextBanner->save();
            $banner->save();
            
            return redirect()->route('admin.banners.index')->with('success', 'Urutan banner berhasil diubah');
        }
        
        return redirect()->route('admin.banners.index')->with('info', 'Banner sudah berada di urutan terbawah');
    }
}