<?php

namespace App\Http\Controllers;

use App\Models\Buku;
use App\Models\Kategori;
use Illuminate\Http\Request;

class AdminBukuController extends Controller
{
    public function create()
    {
        $kategori = Kategori::all();
        return view('admin.buku.create', compact('kategori'));
    }

    public function store(Request $request)
    {
        $validated = $request->validate([
            'bibid' => 'required|string|max:30|unique:buku,bibid',
            'judul' => 'required|string',
            'pengarang' => 'required|string|max:100',
            'penerbit' => 'required|string',
            'tahun_terbit' => 'required|digits:4',
            'edisi' => 'required|digits:4',
            'deskripsi_fisik' => 'required|string|max:100',
            'nomor_panggil' => 'required|string|max:50|unique:buku,nomor_panggil',
            'eksemplar' => 'required|integer|min:1',
            'id_kategori' => 'required|exists:kategori,id_kategori',
            'cover' => 'image|mimes:jpeg,png,jpg,webp|max:2048',
        ]);

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

        $koordinat = $this->tentukanKoordinatRak($validated['nomor_panggil']);
        $validated['lokasi_x'] = $koordinat['x'];
        $validated['lokasi_y'] = $koordinat['y'];

        $validated['konten_digital'] = 0;
        Buku::create($validated);

        return back()->with('success', 'Aset buku baru berhasil ditambahkan.');
    }

    public function index(Request $request)
    {
        $search = $request->input('search');
        $buku = Buku::with('kategori')
            ->when($search, function ($query, $search) {
                return $query->where('judul', 'like', "%{$search}%")
                    ->orWhere('bibid', 'like', "%{$search}%");
            })
            ->paginate(15);

        $kategori = Kategori::all();

        return view('admin.buku.index', compact('buku', 'search', 'kategori'));
    }

    public function edit($id)
    {
        $buku = Buku::findOrFail($id);
        $kategori = Kategori::all();

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

    public function update(Request $request, $id)
    {
        $buku = Buku::findOrFail($id);

        $validated = $request->validate([
            'bibid' => 'required|string|max:30|unique:buku,bibid,' . $id . ',id_buku',
            'judul' => 'required|string',
            'pengarang' => 'required|string|max:100',
            'penerbit' => 'required|string',
            'tahun_terbit' => 'required|digits:4',
            'edisi' => 'required|digits:4',
            'deskripsi_fisik' => 'required|string|max:100',
            'nomor_panggil' => 'required|string|max:50|unique:buku,nomor_panggil,' . $id . ',id_buku',
            'eksemplar' => 'required|integer|min:1',
            'id_kategori' => 'required|exists:kategori,id_kategori',
            'cover' => 'image|mimes:jpeg,png,jpg,webp|max:2048'
        ]);

        if ($request->hasFile('cover')) {
            if ($buku->cover && \Illuminate\Support\Facades\Storage::disk('public')->exists($buku->cover)) {
                \Illuminate\Support\Facades\Storage::disk('public')->delete($buku->cover);
            }
            $validated['cover'] = $request->file('cover')->store('covers', 'public');
        }

        $koordinat = $this->tentukanKoordinatRak($validated['nomor_panggil']);
        $validated['lokasi_x'] = $koordinat['x'];
        $validated['lokasi_y'] = $koordinat['y'];

        $buku->update($validated);

        return redirect()->route('admin.buku.index')->with('success', 'Aset buku berhasil diperbarui.');
    }

    public function destroy($id)
    {
        $buku = Buku::findOrFail($id);
        $buku->delete();

        return redirect()->route('admin.buku.index')->with('success', 'Aset buku berhasil dihapus dari sistem.');
    }

    private function tentukanKoordinatRak($nomor_panggil)
    {
        if (empty($nomor_panggil)) return ['x' => null, 'y' => null];

        $kode_utama = (int) substr(trim(preg_replace('/[^0-9]/', '', $nomor_panggil)), 0, 3);

        return match (true) {
            $kode_utama >= 0 && $kode_utama <= 99 => match (true) {
                $kode_utama <= 19 => ['x' => 13.00, 'y' => 22.00], // Rak 01
                $kode_utama <= 50 => ['x' => 18.00, 'y' => 22.00], // Rak 02
                default => ['x' => 25.00, 'y' => 22.00], // Rak 03-05
            },
            $kode_utama >= 100 && $kode_utama <= 199 => match (true) {
                $kode_utama <= 150 => ['x' => 43.00, 'y' => 20.00], // Rak 06-10
                default => ['x' => 57.00, 'y' => 20.00], // Rak 11-14
            },
            $kode_utama >= 200 && $kode_utama <= 299 => match (true) {
                $kode_utama == 297 => ['x' => 25.00, 'y' => 38.00], // Rak 25-32 (Islam)
                default => ['x' => 13.00, 'y' => 38.00], // Rak 15-24
            },
            $kode_utama >= 300 && $kode_utama <= 399 => match (true) {
                $kode_utama <= 330 => ['x' => 43.00, 'y' => 30.00], // Rak 33-36
                $kode_utama <= 360 => ['x' => 50.00, 'y' => 30.00], // Rak 37-40
                default => ['x' => 57.00, 'y' => 30.00], // Rak 41-44
            },
            $kode_utama >= 400 && $kode_utama <= 499 => ['x' => 18.00, 'y' => 62.00], // Rak 45
            $kode_utama >= 500 && $kode_utama <= 599 => ['x' => 50.00, 'y' => 74.00], // Rak 46-48
            $kode_utama >= 600 && $kode_utama <= 699 => match (true) {
                $kode_utama <= 610 => ['x' => 35.00, 'y' => 85.00], // Rak 49-53
                $kode_utama <= 630 => ['x' => 45.00, 'y' => 85.00], // Rak 54-58
                $kode_utama <= 650 => ['x' => 55.00, 'y' => 85.00], // Rak 59-63
                default => ['x' => 65.00, 'y' => 85.00], // Rak 64-68
            },
            $kode_utama >= 700 && $kode_utama <= 799 => match (true) {
                $kode_utama <= 739 => ['x' => 77.00, 'y' => 22.00], // Rak 71
                $kode_utama <= 769 => ['x' => 82.00, 'y' => 22.00], // Rak 72
                $kode_utama <= 789 => ['x' => 87.00, 'y' => 22.00], // Rak 73
                default => ['x' => 82.00, 'y' => 22.00], // Rak 74
            },
            $kode_utama >= 800 && $kode_utama <= 899 => ['x' => 82.00, 'y' => 32.00], // Rak 77-79
            $kode_utama >= 900 && $kode_utama <= 999 => match (true) {
                $kode_utama <= 919 => ['x' => 77.00, 'y' => 42.00], // Rak 69-70
                default => ['x' => 87.00, 'y' => 42.00], // Rak 80-84
            },
            default => ['x' => null, 'y' => null],
        };
    }
}