<?php

namespace App\Controllers;

use App\Models\InstrumentModel;

class Instruments extends BaseController
{
    private function model(): InstrumentModel
    {
        return model(InstrumentModel::class);
    }

    public function index()
    {
        return view('instruments/index', [
            'title'       => 'Instrumenty',
            'instruments' => $this->model()->withStats(),
        ]);
    }

    public function new()
    {
        return view('instruments/form', [
            'title'      => 'Nowy instrument',
            'instrument' => null,
        ]);
    }

    public function create()
    {
        return $this->persist(null);
    }

    public function edit($id)
    {
        $instrument = $this->model()->find((int) $id);
        if (! $instrument) {
            return redirect()->to('/instruments')->with('error', 'Nie znaleziono instrumentu.');
        }

        return view('instruments/form', [
            'title'      => 'Edycja instrumentu',
            'instrument' => $instrument,
        ]);
    }

    public function update($id)
    {
        return $this->persist((int) $id);
    }

    public function delete($id)
    {
        $id = (int) $id;
        if ($this->model()->hasChildren($id)) {
            return redirect()->to('/instruments')
                ->with('error', 'Nie można usunąć instrumentu z operacjami lub wycenami. Najpierw usuń powiązane wpisy.');
        }
        $this->model()->delete($id);

        return redirect()->to('/instruments')->with('success', 'Instrument usunięty.');
    }

    private function persist(?int $id)
    {
        $data = ['name' => trim((string) $this->request->getPost('name'))];

        $model = $this->model();
        $ok    = $id !== null ? $model->update($id, $data) : $model->insert($data);

        if ($ok === false) {
            return redirect()->back()->withInput()
                ->with('error', implode(' ', $model->errors()));
        }

        return redirect()->to('/instruments')->with('success', 'Zapisano instrument.');
    }
}