<?php

namespace App\Http\Controllers;

use Illuminate\Http\Request;
use App\Models\Gejala;

class GejalaController extends Controller
{
    // =========================
    // TAMPIL DATA
    // =========================
    public function index(Request $request)
    {
        // jumlah data per halaman
        $perPage = $request->perPage ?? 5;

        // search
        $query = Gejala::query();

        if ($request->search) {

            $query->where('kode', 'like', '%' . $request->search . '%')
                  ->orWhere('nama', 'like', '%' . $request->search . '%');
        }

        // pagination
        $gejalas = $query->orderBy('kode', 'asc')
            ->paginate($perPage)
            ->withQueryString();

        return view(
            'admin.gejala.index',
            compact('gejalas', 'perPage')
        );
    }

    // =========================
    // FORM TAMBAH
    // =========================
    public function create()
    {
        // ambil kode terakhir
        $lastGejala = Gejala::orderBy('kode', 'desc')->first();

        // default
        $kode = 'G01';

        if ($lastGejala) {

            $lastNumber = (int) substr($lastGejala->kode, 1);

            $newNumber = $lastNumber + 1;

            $kode = 'G' . str_pad(
                $newNumber,
                2,
                '0',
                STR_PAD_LEFT
            );
        }

        return view(
            'admin.gejala.create',
            compact('kode')
        );
    }

    // =========================
    // SIMPAN DATA
    // =========================
    public function store(Request $request)
    {
        $request->validate([

            'kode' => 'required|unique:gejalas',

            'nama' => 'required',

            'mb' => 'required|numeric|min:0|max:1',

            'md' => 'required|numeric|min:0|max:1',

        ]);

        // Validasi MB dan MD
        if ($request->md > $request->mb) {

            return back()
                ->withInput()
                ->with(
                    'error',
                    'Nilai MD tidak boleh lebih besar dari MB.'
                );
        }

        Gejala::create([

            'kode' => $request->kode,

            'nama' => $request->nama,

            'mb' => $request->mb,

            'md' => $request->md,

        ]);

        return redirect()
            ->route('gejala.index')
            ->with(
                'success',
                'Data gejala berhasil ditambahkan.'
            );
    }

    // =========================
    // FORM EDIT
    // =========================
    public function edit($id)
    {
        $gejala = Gejala::findOrFail($id);

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

    // =========================
    // UPDATE DATA
    // =========================
    public function update(Request $request, $id)
    {
        $gejala = Gejala::findOrFail($id);

        $request->validate([

            'kode' => 'required|unique:gejalas,kode,' . $id,

            'nama' => 'required',

            'mb' => 'required|numeric|min:0|max:1',

            'md' => 'required|numeric|min:0|max:1',

        ]);

        // Validasi MB dan MD
        if ($request->md > $request->mb) {

            return back()
                ->withInput()
                ->with(
                    'error',
                    'Nilai MD tidak boleh lebih besar dari MB.'
                );
        }

        $gejala->update([

            'kode' => $request->kode,

            'nama' => $request->nama,

            'mb' => $request->mb,

            'md' => $request->md,

        ]);

        return redirect()
            ->route('gejala.index')
            ->with(
                'success',
                'Data gejala berhasil diperbarui.'
            );
    }

    // =========================
    // HAPUS DATA
    // =========================
    public function destroy($id)
    {
        Gejala::destroy($id);

        return redirect()
            ->route('gejala.index')
            ->with(
                'success',
                'Data gejala berhasil dihapus.'
            );
    }
}