<?php

declare(strict_types=1);

namespace App\Controllers\Admin;

use CodeIgniter\HTTP\ResponseInterface;

/** Tools CRUD: list, create (with generated SEO content), edit, delete. */
final class ToolsAdmin extends AdminBase
{
    public function index(): string
    {
        $q = trim((string) $this->request->getGet('q'));

        $query = $this->toolsModel()->orderBy('name', 'ASC')->limit(300);
        if ($q !== '') {
            $query->like('name', $q)->orLike('slug', $q);
        }

        return $this->render('tools_index', [
            'tools'      => $query->findAll(),
            'categories' => $this->categories(),
            'q'          => $q,
        ]);
    }

    public function create(): string
    {
        return $this->render('tools_form', [
            'tool'       => null,
            'categories' => $this->categories(),
        ]);
    }

    public function store(): ResponseInterface
    {
        return $this->save(null);
    }

    public function edit(int $id): string
    {
        $tool = $this->toolsModel()->find($id) ?? throw new \CodeIgniter\Exceptions\PageNotFoundException();

        return $this->render('tools_form', [
            'tool'       => $tool,
            'categories' => $this->categories(),
        ]);
    }

    public function update(int $id): ResponseInterface
    {
        return $this->save($id);
    }

    private function save(?int $id): ResponseInterface
    {
        $post   = $this->request->getPost();
        $catId  = (int) ($post['category_id'] ?? 0);

        try {
            $row = $this->toolFromInput((array) $post, $catId);
        } catch (\Throwable $e) {
            session()->setFlashdata('error', 'Could not build the tool: ' . $e->getMessage());

            return redirect()->back()->withInput();
        }

        // pre-publish SEO validation (critical checks only)
        $problems = [];
        if (trim((string) $row['seo_title']) === '') {
            $problems[] = 'SEO title missing';
        }
        if (mb_strlen((string) $row['seo_description']) < 50) {
            $problems[] = 'SEO description too short (<50 chars)';
        }
        if (trim((string) $row['h1']) === '') {
            $problems[] = 'H1 missing';
        }
        if ($problems !== [] && ($row['status'] ?? '') === 'active') {
            session()->setFlashdata('error', 'Blocked from publishing: ' . implode('; ', $problems));
            session()->setFlashdata('form_data', $post);

            return redirect()->to($id ? '/admin/tools/' . $id . '/edit' : '/admin/tools/new')->withInput();
        }

        if ($id !== null) {
            $this->toolsModel()->update($id, $row);
            session()->setFlashdata('success', 'Tool updated.');
        } else {
            $this->toolsModel()->insert($row);
            session()->setFlashdata('success', 'Tool created.');
        }

        return redirect()->to('/admin/tools');
    }

    public function delete(int $id): ResponseInterface
    {
        $this->toolsModel()->delete($id);
        service('cache')->clear();

        return redirect()->to('/admin/tools');
    }
}