<?php

namespace App\Controllers\Api;

use CodeIgniter\HTTP\ResponseInterface;

class EventController extends BaseApiController
{
    /**
     * Get event list
     */
    public function index()
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        $params = $this->getPaginationParams();
        $builder = $this->getDB()->table('events');

        // Search
        $searchType = $this->request->getGet('search_type');
        $searchKeyword = $this->request->getGet('search_keyword');

        if ($searchType && $searchKeyword) {
            if ($searchType === 'title') {
                $builder->like('title', $searchKeyword);
            } elseif ($searchType === 'name') {
                $builder->like('name', $searchKeyword);
            } elseif ($searchType === 'content') {
                $builder->like('content', $searchKeyword);
            }
        }

        $builder->orderBy('is_notice', 'DESC');
        $builder->orderBy('id', 'DESC');
        $result = $this->paginatedResponse($builder, $params);

        return $this->respondSuccess($result);
    }

    /**
     * Get single event
     */
    public function show($id = null)
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        $builder = $this->getDB()->table('events');
        $event = $builder->where('id', $id)->get()->getRow();

        if (!$event) {
            return $this->respondError('이벤트를 찾을 수 없습니다.', ResponseInterface::HTTP_NOT_FOUND);
        }

        // Parse file_urls JSON
        $event->file_urls = $this->normalizeFileUrls($event->file_urls ?? '[]');

        // Fix image paths in content: /event/image.jpg -> /uploads/bbs/event/image.jpg
        if (!empty($event->content)) {
            // src="/event/ 형태를 src="/uploads/bbs/event/ 로 변경
            $event->content = str_replace('src="/event/', 'src="/uploads/bbs/event/', $event->content);
            // src='/event/ 형태도 처리
            $event->content = str_replace("src='/event/", "src='/uploads/bbs/event/", $event->content);

            // YouTube iframe 경로 수정: /embed/ID -> https://www.youtube.com/embed/ID
            $event->content = str_replace('src="/embed/', 'src="https://www.youtube.com/embed/', $event->content);
            $event->content = str_replace("src='/embed/", "src='https://www.youtube.com/embed/", $event->content);

            // 도메인 추가: src="/uploads -> src="http://도메인/uploads
            // 단, 이미 http:// 또는 https://로 시작하는 URL은 제외
            $protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https://' : 'http://';
            $currentDomain = $protocol . ($_SERVER['HTTP_HOST'] ?? 'localhost');

            // 정규표현식으로 /uploads로 시작하고 앞에 http(s)://가 없는 경우만 도메인 추가
            $event->content = preg_replace(
                '/src="(?!https?:\/\/)\/uploads\//',
                'src="' . $currentDomain . '/uploads/',
                $event->content
            );
            $event->content = preg_replace(
                "/src='(?!https?:\/\/)\/uploads\//",
                "src='" . $currentDomain . "/uploads/",
                $event->content
            );
        }

        // Increment view count
        $builder->where('id', $id)->set('views', 'views + 1', false)->update();

        return $this->respondSuccess($event);
    }

    /**
     * Create event
     */
    public function create()
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        $json = $this->request->getJSON();

        $data = [
            'site' => $json->site ?? 'common',
            'category' => $json->category ?? '',
            'allow_comment' => isset($json->allow_comment) ? (int)$json->allow_comment : 0,
            'is_notice' => isset($json->is_notice) ? (int)$json->is_notice : 0,
            'name' => $json->name ?? '',
            'email' => $json->email ?? '',
            'start_date' => $json->start_date ?? '',
            'end_date' => $json->end_date ?? '',
            'title' => $json->title ?? '',
            'content' => $json->content ?? '',
            'file_urls' => json_encode($json->file_urls ?? []),
            'views' => 0,
            'created_at' => date('Y-m-d H:i:s')
        ];

        $builder = $this->getDB()->table('events');
        $builder->insert($data);

        return $this->respondSuccess(['id' => $this->getDB()->insertID()], '이벤트가 등록되었습니다.');
    }

    /**
     * Update event
     */
    public function update($id = null)
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        $json = $this->request->getJSON();

        $data = [
            'site' => $json->site ?? 'common',
            'category' => $json->category ?? '',
            'allow_comment' => isset($json->allow_comment) ? (int)$json->allow_comment : 0,
            'is_notice' => isset($json->is_notice) ? (int)$json->is_notice : 0,
            'name' => $json->name ?? '',
            'email' => $json->email ?? '',
            'start_date' => $json->start_date ?? '',
            'end_date' => $json->end_date ?? '',
            'title' => $json->title ?? '',
            'content' => $json->content ?? '',
            'file_urls' => json_encode($json->file_urls ?? []),
            'updated_at' => date('Y-m-d H:i:s')
        ];

        $builder = $this->getDB()->table('events');
        $builder->where('id', $id)->update($data);

        return $this->respondSuccess(null, '이벤트가 수정되었습니다.');
    }

    /**
     * Delete event
     */
    public function delete($id = null)
    {
        $auth = $this->requireAuth();
        if ($auth instanceof ResponseInterface) {
            return $auth;
        }

        $builder = $this->getDB()->table('events');
        $builder->where('id', $id)->delete();

        return $this->respondSuccess(null, '이벤트가 삭제되었습니다.');
    }

    /**
     * Normalize file_urls to always return object array
     * Handles both old format (string array) and new format (object array)
     */
    private function normalizeFileUrls($fileUrlsJson)
    {
        $fileUrls = json_decode($fileUrlsJson ?? '[]');

        if (empty($fileUrls) || !is_array($fileUrls)) {
            return [];
        }

        $normalized = [];
        foreach ($fileUrls as $item) {
            // If already an object with url property, keep it
            if (is_object($item) && isset($item->url)) {
                $normalized[] = $item;
            }
            // If it's a string (old format), convert to object
            elseif (is_string($item)) {
                $filename = basename($item);
                $normalized[] = (object)[
                    'name' => $filename,
                    'url' => $item,
                    'size' => 0  // Size unknown for migrated data
                ];
            }
        }

        return $normalized;
    }

    /**
     * Get public event list (no auth required)
     */
    public function publicList()
    {
        $params = $this->getPaginationParams();
        $builder = $this->getDB()->table('events');

        // Filter by site (ford or lincoln) + common
        $site = $this->request->getGet('site');
        if ($site && in_array($site, ['ford', 'lincoln'])) {
            $builder->where("(site = '{$site}' OR site = 'common')");
        }

        // Show all events (including notices)
        $builder->orderBy('id', 'DESC');

        $result = $this->paginatedResponse($builder, $params);

        // Parse file_urls for each item
        if (!empty($result['items'])) {
            foreach ($result['items'] as &$item) {
                $item->file_urls = $this->normalizeFileUrls($item->file_urls ?? '[]');
            }
        }

        return $this->respondSuccess($result);
    }

    /**
     * Get public single event (no auth required)
     */
    public function publicShow($id = null)
    {
        $builder = $this->getDB()->table('events');
        $event = $builder->where('id', $id)->get()->getRow();

        if (!$event) {
            return $this->respondError('이벤트를 찾을 수 없습니다.', ResponseInterface::HTTP_NOT_FOUND);
        }

        // Parse file_urls JSON
        $event->file_urls = $this->normalizeFileUrls($event->file_urls ?? '[]');

        // Fix image paths in content: /event/image.jpg -> /uploads/bbs/event/image.jpg
        if (!empty($event->content)) {
            // src="/event/ 형태를 src="/uploads/bbs/event/ 로 변경
            $event->content = str_replace('src="/event/', 'src="/uploads/bbs/event/', $event->content);
            // src='/event/ 형태도 처리
            $event->content = str_replace("src='/event/", "src='/uploads/bbs/event/", $event->content);

            // YouTube iframe 경로 수정: /embed/ID -> https://www.youtube.com/embed/ID
            $event->content = str_replace('src="/embed/', 'src="https://www.youtube.com/embed/', $event->content);
            $event->content = str_replace("src='/embed/", "src='https://www.youtube.com/embed/", $event->content);

            // 도메인 추가: src="/uploads -> src="http://도메인/uploads
            // 단, 이미 http:// 또는 https://로 시작하는 URL은 제외
            $protocol = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on' ? 'https://' : 'http://';
            $currentDomain = $protocol . ($_SERVER['HTTP_HOST'] ?? 'localhost');

            // 정규표현식으로 /uploads로 시작하고 앞에 http(s)://가 없는 경우만 도메인 추가
            $event->content = preg_replace(
                '/src="(?!https?:\/\/)\/uploads\//',
                'src="' . $currentDomain . '/uploads/',
                $event->content
            );
            $event->content = preg_replace(
                "/src='(?!https?:\/\/)\/uploads\//",
                "src='" . $currentDomain . "/uploads/",
                $event->content
            );
        }

        // Increment view count
        $builder->where('id', $id)->set('views', 'views + 1', false)->update();

        return $this->respondSuccess($event);
    }
}