<?php

namespace App\Http\Controllers\Admin;

use App\Http\Controllers\Controller;
use Illuminate\Http\Request;
use App\Models\FlashSale;
use App\Models\FlashSaleItem;
use App\Models\Barang;
use Illuminate\Support\Facades\Storage;

class FlashSaleController extends Controller
{
    /**
     * Display a listing of the resource.
     */
    public function index()
    {
        $flashSales = FlashSale::orderBy('waktu_mulai', 'desc')->get();
        return view('admin.flash-sales.index', compact('flashSales'));
    }

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

    /**
     * Store a newly created resource in storage.
     */
    public function store(Request $request)
    {
        $request->validate([
            'nama' => 'required|string|max:255',
            'deskripsi' => 'nullable|string',
            'banner' => 'nullable|image|max:2048',
            'waktu_mulai' => 'required|date',
            'waktu_selesai' => 'required|date|after:waktu_mulai',
            'aktif' => 'required|boolean',
        ]);

        $data = $request->all();
        
        if ($request->hasFile('banner')) {
            $data['banner'] = $request->file('banner')->store('flash-sales', 'public');
        }
        
        $flashSale = FlashSale::create($data);
        
        return redirect()->route('admin.flash-sales.index')->with('success', 'Flash sale berhasil ditambahkan');
    }

    /**
     * Display the specified resource.
     */
    public function show(FlashSale $flashSale)
    {
        return view('admin.flash-sales.show', compact('flashSale'));
    }

    /**
     * Show the form for editing the specified resource.
     */
    public function edit(FlashSale $flashSale)
    {
        return view('admin.flash-sales.edit', compact('flashSale'));
    }

    /**
     * Update the specified resource in storage.
     */
    public function update(Request $request, FlashSale $flashSale)
    {
        $request->validate([
            'nama' => 'required|string|max:255',
            'deskripsi' => 'nullable|string',
            'banner' => 'nullable|image|max:2048',
            'waktu_mulai' => 'required|date',
            'waktu_selesai' => 'required|date|after:waktu_mulai',
            'aktif' => 'required|boolean',
        ]);

        $data = $request->all();
        
        if ($request->hasFile('banner')) {
            // Hapus banner lama jika ada
            if ($flashSale->banner) {
                Storage::disk('public')->delete($flashSale->banner);
            }
            
            $data['banner'] = $request->file('banner')->store('flash-sales', 'public');
        }
        
        $flashSale->update($data);
        
        return redirect()->route('admin.flash-sales.index')->with('success', 'Flash sale berhasil diperbarui');
    }

    /**
     * Remove the specified resource from storage.
     */
    public function destroy(FlashSale $flashSale)
    {
        // Hapus banner jika ada
        if ($flashSale->banner) {
            Storage::disk('public')->delete($flashSale->banner);
        }
        
        // Hapus semua item flash sale terkait
        $flashSale->items()->delete();
        
        $flashSale->delete();
        
        return redirect()->route('admin.flash-sales.index')->with('success', 'Flash sale berhasil dihapus');
    }
    
    /**
     * Toggle status flash sale
     */
    public function toggleStatus(FlashSale $flashSale)
    {
        $flashSale->aktif = !$flashSale->aktif;
        $flashSale->save();
        
        return redirect()->route('admin.flash-sales.index')->with('success', 'Status flash sale berhasil diubah');
    }
    
    /**
     * Menampilkan halaman daftar item flash sale
     */
    public function showItems(FlashSale $flashSale)
    {
        $barangs = Barang::whereDoesntHave('flashSaleItems', function($query) use ($flashSale) {
            $query->where('flash_sale_id', $flashSale->id);
        })->get();
        
        return view('admin.flash-sales.items', compact('flashSale', 'barangs'));
    }
    
    /**
     * Menambahkan item ke flash sale
     */
    public function storeItem(Request $request, FlashSale $flashSale)
    {
        $request->validate([
            'barang_id' => 'required|exists:barangs,id',
            'harga_flash_sale' => 'required|numeric|min:0',
            'persentase_diskon' => 'nullable|numeric|min:0|max:100',
            'stok_flash_sale' => 'required|integer|min:1',
            'aktif' => 'required|boolean',
        ]);
        
        $data = $request->all();
        $data['flash_sale_id'] = $flashSale->id;
        $data['stok_terjual'] = 0;
        
        // Hitung persentase diskon jika tidak diisi
        if (empty($data['persentase_diskon'])) {
            $barang = Barang::find($data['barang_id']);
            $data['persentase_diskon'] = round((($barang->harga - $data['harga_flash_sale']) / $barang->harga) * 100);
        }
        
        FlashSaleItem::create($data);
        
        return redirect()->route('admin.flash-sales.items', $flashSale)->with('success', 'Item berhasil ditambahkan ke flash sale');
    }
    
    /**
     * Update item flash sale
     */
    public function updateItem(Request $request, FlashSaleItem $flashSaleItem)
    {
        $request->validate([
            'harga_flash_sale' => 'required|numeric|min:0',
            'persentase_diskon' => 'required|numeric|min:0|max:100',
            'stok_flash_sale' => 'required|integer|min:' . $flashSaleItem->stok_terjual,
            'aktif' => 'required|boolean',
        ]);
        
        $flashSaleItem->update($request->all());
        
        return redirect()->route('admin.flash-sales.items', $flashSaleItem->flash_sale_id)->with('success', 'Item flash sale berhasil diperbarui');
    }
    
    public function destroyItem(FlashSaleItem $flashSaleItem)
    {
        $flashSaleId = $flashSaleItem->flash_sale_id;
        $flashSaleItem->delete();
        return redirect()->route('admin.flash-sales.items', $flashSaleId)->with('success', 'Item flash sale berhasil dihapus');
    }
    
    public function getItemData(FlashSaleItem $flashSaleItem)
    {
        return response()->json([
            'id' => $flashSaleItem->id,
            'harga_flash_sale' => $flashSaleItem->harga_flash_sale,
            'persentase_diskon' => $flashSaleItem->persentase_diskon,
            'stok_flash_sale' => $flashSaleItem->stok_flash_sale,
            'aktif' => $flashSaleItem->aktif
        ]);
    }
}