<?php

namespace App\Controllers\Admin;

use App\Controllers\BaseController;
use App\Models\NewsModel;
use App\Models\AuditLogModel;

class News extends BaseController
{
    protected $newsModel;
    protected $auditLogModel;

    public function __construct()
    {
        $this->newsModel = new NewsModel();
        $this->auditLogModel = new AuditLogModel();
    }

    /**
     * Display list of news
     */
    public function index()
    {
        $perPage = 10;
        $page = $this->request->getGet('page') ?? 1;
        $status = $this->request->getGet('status');
        $search = $this->request->getGet('search');

        // Build query with filters
        $this->newsModel->select('news.*, users.username as creator_name')
            ->join('users', 'users.id = news.created_by', 'left');

        // Filter by status
        if ($status && in_array($status, ['draft', 'published'])) {
            $this->newsModel->where('news.status', $status);
        }

        // Search
        if ($search) {
            $this->newsModel->groupStart()
                ->like('news.title', $search)
                ->orLike('news.content', $search)
                ->groupEnd();
        }

        // Get paginated results
        $news = $this->newsModel->orderBy('news.created_at', 'DESC')
            ->paginate($perPage, 'default', $page);

        $pager = $this->newsModel->pager;

        $data = [
            'title' => 'Berita',
            'news' => $news,
            'pager' => $pager,
            'currentStatus' => $status,
            'currentSearch' => $search,
            'stats' => [
                'total' => $this->newsModel->countByStatus(),
                'published' => $this->newsModel->countByStatus('published'),
                'draft' => $this->newsModel->countByStatus('draft'),
            ],
        ];

        return view('admin/news/index', $data);
    }

    /**
     * Show form to create new news
     */
    public function create()
    {
        $data = [
            'title' => 'Tambah Berita',
            'news' => null,
        ];

        return view('admin/news/form', $data);
    }

    /**
     * Store new news
     */
    public function store()
    {
        $validation = \Config\Services::validation();

        $rules = [
            'title' => 'required|min_length[3]|max_length[255]',
            'content' => 'required',
            'status' => 'required|in_list[draft,published]',
        ];

        if (!$this->validate($rules)) {
            return redirect()->back()
                ->withInput()
                ->with('validation', $validation);
        }

        $title = $this->request->getPost('title');
        $slug = $this->newsModel->generateSlug($title);
        $content = $this->request->getPost('content');
        $contentHtml = $this->request->getPost('content_html');
        $contentJson = $this->request->getPost('content_json');
        $excerpt = $this->request->getPost('excerpt');
        $status = $this->request->getPost('status');
        $userId = session()->get('user_id');

        // Use content_html if available, otherwise use content
        $finalContent = !empty($contentHtml) ? $contentHtml : $content;

        $data = [
            'title' => $title,
            'slug' => $slug,
            'content' => $finalContent,
            'content_html' => $contentHtml,
            'content_json' => $contentJson,
            'excerpt' => $excerpt,
            'status' => $status,
            'created_by' => $userId,
        ];

        // Set published_at if status is published
        if ($status === 'published') {
            $data['published_at'] = date('Y-m-d H:i:s');
        }

        if ($this->newsModel->insert($data)) {
            // Log action
            $this->auditLogModel->logAction('news_created', $userId);

            return redirect()->to('/admin/news')
                ->with('success', 'Berita berhasil ditambahkan.');
        }

        return redirect()->back()
            ->withInput()
            ->with('error', 'Gagal menambahkan berita.');
    }

    /**
     * Show form to edit news
     */
    public function edit($id)
    {
        $news = $this->newsModel->find($id);

        if (!$news) {
            return redirect()->to('/admin/news')
                ->with('error', 'Berita tidak ditemukan.');
        }

        $data = [
            'title' => 'Edit Berita',
            'news' => $news,
        ];

        return view('admin/news/form', $data);
    }

    /**
     * Update news
     */
    public function update($id)
    {
        $news = $this->newsModel->find($id);

        if (!$news) {
            return redirect()->to('/admin/news')
                ->with('error', 'Berita tidak ditemukan.');
        }

        $validation = \Config\Services::validation();

        $rules = [
            'title' => 'required|min_length[3]|max_length[255]',
            'content' => 'required',
            'status' => 'required|in_list[draft,published]',
        ];

        if (!$this->validate($rules)) {
            return redirect()->back()
                ->withInput()
                ->with('validation', $validation);
        }

        $title = $this->request->getPost('title');
        $oldTitle = $news['title'];
        $content = $this->request->getPost('content');
        $contentHtml = $this->request->getPost('content_html');
        $contentJson = $this->request->getPost('content_json');
        $excerpt = $this->request->getPost('excerpt');
        $status = $this->request->getPost('status');
        $userId = session()->get('user_id');

        // Use content_html if available, otherwise use content
        $finalContent = !empty($contentHtml) ? $contentHtml : $content;

        // Generate new slug if title changed
        $slug = ($title !== $oldTitle) 
            ? $this->newsModel->generateSlug($title, $id)
            : $news['slug'];

        $data = [
            'title' => $title,
            'slug' => $slug,
            'content' => $finalContent,
            'content_html' => $contentHtml,
            'content_json' => $contentJson,
            'excerpt' => $excerpt,
            'status' => $status,
        ];

        // Set published_at if status changed to published and wasn't published before
        if ($status === 'published' && empty($news['published_at'])) {
            $data['published_at'] = date('Y-m-d H:i:s');
        }

        try {
            // Skip model validation karena sudah divalidasi di controller
            $this->newsModel->skipValidation(true);
            
            $result = $this->newsModel->update($id, $data);
            
            if ($result === false) {
                // Get validation errors if any
                $errors = $this->newsModel->errors();
                $errorMessage = !empty($errors) 
                    ? implode(', ', $errors) 
                    : 'Gagal memperbarui berita.';
                
                log_message('error', 'News update failed - ID: ' . $id . ', Errors: ' . json_encode($errors));
                
                return redirect()->back()
                    ->withInput()
                    ->with('error', $errorMessage);
            }
            
            // Log action
            $this->auditLogModel->logAction('news_updated', $userId);

            return redirect()->to('/admin/news')
                ->with('success', 'Berita berhasil diperbarui.');
                
        } catch (\Exception $e) {
            log_message('error', 'News update exception - ID: ' . $id . ', Error: ' . $e->getMessage() . ' | Trace: ' . $e->getTraceAsString());
            
            return redirect()->back()
                ->withInput()
                ->with('error', 'Terjadi kesalahan saat memperbarui berita: ' . $e->getMessage());
        }
    }

    /**
     * Delete news
     */
    public function delete($id)
    {
        $news = $this->newsModel->find($id);

        if (!$news) {
            return redirect()->to('/admin/news')
                ->with('error', 'Berita tidak ditemukan.');
        }

        $userId = session()->get('user_id');

        if ($this->newsModel->delete($id)) {
            // Log action
            $this->auditLogModel->logAction('news_deleted', $userId);

            return redirect()->to('/admin/news')
                ->with('success', 'Berita berhasil dihapus.');
        }

        return redirect()->to('/admin/news')
            ->with('error', 'Gagal menghapus berita.');
    }
}