<?php

namespace App\Http\Controllers;

use App\Models\Setting;
use App\Models\Blog;
use App\Models\BlogComment;
use App\Models\HeaderTemplate;
use App\Models\FooterTemplate;
use App\Services\TemplateService;
use App\Models\Page;
use App\Support\BlogStructuredData;
use Illuminate\Http\Request;
use Illuminate\Support\Facades\Validator;

class BlogController extends Controller
{
	public function index(Request $request)
	{
		$settings = class_exists(Setting::class) ? (Setting::query()->first()) : null;
		
		$query = class_exists(Blog::class)
			? Blog::with(['category', 'author'])
				->withCount('comments')
				->published()
			: null;

		// Author filtresi
		if ($query && $request->has('author') && $request->author) {
			$query = $query->where('author_id', $request->author);
		}

		// Category filtresi
		if ($query && $request->has('category') && $request->category) {
			$query = $query->whereHas('category', function($q) use ($request) {
				$q->where('slug', $request->category);
			});
		}

		// Tag filtresi
		if ($query && $request->has('tag') && $request->tag) {
			$query = $query->whereJsonContains('tags', $request->tag);
		}

		$posts = $query
			? $query->latest('published_at')->paginate(12)
			: collect();

        // Blog sayfa ayarlarını bul (varsa)
        $blogPage = Page::where('slug', 'blog')->first();

		// Render Header Template
		$renderedHeader = null;
        $headerTemplate = null;

        // 1. Öncelik: Blog sayfasında seçili header template
        if ($blogPage && $blogPage->header_template_id) {
            $headerTemplate = HeaderTemplate::find($blogPage->header_template_id);
        }

        // 2. Öncelik: Varsayılan aktif template (KALDIRILDI - Default static header kullanılmalı)
        /*
        if (!$headerTemplate) {
            $headerTemplate = HeaderTemplate::where('is_active', true)
                ->latest('updated_at')
                ->first();
        }
        */
		
		if ($headerTemplate) {
			$templateDefaults = $headerTemplate->default_data ?? [];
            $pageData = $blogPage ? ($blogPage->header_data ?? []) : [];
            $mergedData = array_merge($templateDefaults, $pageData);
            
			$renderedHeader = TemplateService::replacePlaceholders(
				$headerTemplate->html_content,
				$mergedData,
                $blogPage
			);
		}

		// Render Footer Template
		$renderedFooter = null;
        $footerTemplate = null;

        // 1. Öncelik: Blog sayfasında seçili footer template
        if ($blogPage && $blogPage->footer_template_id) {
            $footerTemplate = FooterTemplate::find($blogPage->footer_template_id);
        }

        // 2. Öncelik: Varsayılan aktif template
        if (!$footerTemplate) {
            $footerTemplate = FooterTemplate::where('is_active', true)
                ->latest('updated_at')
                ->first();
        }
		
		if ($footerTemplate) {
			$templateDefaults = $footerTemplate->default_data ?? [];
            $pageData = $blogPage ? ($blogPage->footer_data ?? []) : [];
            $mergedData = array_merge($templateDefaults, $pageData);

			$renderedFooter = TemplateService::replacePlaceholders(
				$footerTemplate->html_content,
				$mergedData,
                $blogPage
			);
		}

        // Kategorileri al (filtreleme için)
        $categories = class_exists(\App\Models\BlogCategory::class) ? \App\Models\BlogCategory::where('is_active', true)->orderBy('sort_order')->get() : collect();

		// Elemis Widget'ları için veri hazırlığı
		$carouselPosts = collect();
		$highlightCategories = collect();
		$popularPosts = collect();
		$sidebarCategories = collect();
		$tags = collect();

		if (!$request->ajax()) {
			if (class_exists(Blog::class)) {
				// Karusel: Öne çıkarılan ya da en güncel 5 yazı
				$carouselPosts = Blog::with(['category', 'author'])
					->published()
					->featured()
					->latest('published_at')
					->take(5)
					->get();
				if ($carouselPosts->isEmpty()) {
					$carouselPosts = Blog::with(['category', 'author'])
						->published()
						->latest('published_at')
						->take(5)
						->get();
				}

				// Popüler Yazılar: En çok okunan 3 yazı
				$popularPosts = Blog::with(['category', 'author'])
					->published()
					->orderBy('view_count', 'desc')
					->take(3)
					->get();

				// Etiket Bulutu: Tüm yayınlanan yazılardaki benzersiz etiketler
				$allTags = Blog::published()
					->whereNotNull('tags')
					->pluck('tags');
				$tagsCollected = collect();
				foreach ($allTags as $postTags) {
					if (is_array($postTags)) {
						foreach ($postTags as $tag) {
							$tagsCollected->push($tag);
						}
					}
				}
				$tags = $tagsCollected->unique()->take(15);
			}

			if (class_exists(\App\Models\BlogCategory::class)) {
				// Hoş Geldiniz bölümü altındaki 3'lü kategori vurgusu
				$highlightCategories = \App\Models\BlogCategory::where('is_active', true)
					->withCount('blogs')
					->has('blogs')
					->orderBy('sort_order')
					->take(3)
					->get();
				if ($highlightCategories->count() < 3) {
					$highlightCategories = \App\Models\BlogCategory::where('is_active', true)
						->orderBy('sort_order')
						->take(3)
						->get();
				}

				// Sidebar Kategorileri: Yazı sayısıyla birlikte
				$sidebarCategories = \App\Models\BlogCategory::where('is_active', true)
					->withCount('blogs')
					->orderBy('sort_order')
					->get();
			}
		}

		if ($request->ajax()) {
			return view('blog.partials.posts', [
				'posts' => $posts
			]);
		}

		$pageUrl = url()->current();

		return view('blog.index', [
			'settings' => $settings,
			'posts' => $posts,
			'categories' => $categories,
			'carouselPosts' => $carouselPosts,
			'highlightCategories' => $highlightCategories,
			'popularPosts' => $popularPosts,
			'sidebarCategories' => $sidebarCategories,
			'tags' => $tags,
			'renderedHeader' => $renderedHeader,
			'renderedFooter' => $renderedFooter,
			'meta' => [
				'title' => __('blog.meta-index-title'),
				'description' => __('blog.meta-index-description'),
			],
			'structuredData' => $posts instanceof \Illuminate\Contracts\Pagination\LengthAwarePaginator
				? BlogStructuredData::forIndex($posts, $pageUrl)
				: null,
		]);
	}

	public function show(string $slug)
	{
		$settings = class_exists(Setting::class) ? (Setting::query()->first()) : null;
		if (!class_exists(Blog::class)) {
			abort(404);
		}
		$post = Blog::with(['category', 'author'])
			->withCount('comments')
			->published()
			->where('slug', $slug)
			->firstOrFail();

		// İlgili blog gönderilerini al (aynı kategoriden, mevcut gönderi hariç)
		$relatedPosts = Blog::with(['category', 'author'])
			->withCount('comments')
			->published()
			->where('id', '!=', $post->id)
			->when($post->category_id, function($query) use ($post) {
				return $query->where('category_id', $post->category_id);
			})
			->latest('published_at')
			->limit(4)
			->get();

		// Eğer aynı kategoriden yeterli gönderi yoksa, diğer kategorilerden ekle
		if ($relatedPosts->count() < 4) {
			$additionalPosts = Blog::with(['category', 'author'])
				->withCount('comments')
				->published()
				->where('id', '!=', $post->id)
				->whereNotIn('id', $relatedPosts->pluck('id'))
				->latest('published_at')
				->limit(4 - $relatedPosts->count())
				->get();
			
			$relatedPosts = $relatedPosts->merge($additionalPosts);
		}

		// Onaylanmış yorumları al (parent yorumlar ve reply'leri ile)
		$comments = $post->comments()
			->approved()
			->whereNull('parent_id')
			->with(['replies' => function($query) {
				$query->approved()->orderBy('created_at', 'asc');
			}])
			->orderBy('created_at', 'desc')
			->get();

		// Blog sayfa ayarlarını bul (varsa)
		$blogPage = Page::where('slug', 'blog')->first();

		// Render Header Template
		$renderedHeader = null;
		$headerTemplate = null;

		// 1. Öncelik: Blog sayfasında seçili header template
		if ($blogPage && $blogPage->header_template_id) {
			$headerTemplate = HeaderTemplate::find($blogPage->header_template_id);
		}
		
		if ($headerTemplate) {
			$templateDefaults = $headerTemplate->default_data ?? [];
            $pageData = $blogPage ? ($blogPage->header_data ?? []) : [];
            $mergedData = array_merge($templateDefaults, $pageData);

			$renderedHeader = TemplateService::replacePlaceholders(
				$headerTemplate->html_content,
				$mergedData,
				$post
			);
		}

		// Render Footer Template - En son aktif olan footer template'i kullan
		$renderedFooter = null;
		$footerTemplate = FooterTemplate::where('is_active', true)
			->latest('updated_at')
			->first();
		
		if ($footerTemplate) {
			$templateDefaults = $footerTemplate->default_data ?? [];
			$renderedFooter = TemplateService::replacePlaceholders(
				$footerTemplate->html_content,
				$templateDefaults,
				$post
			);
		}

		$pageUrl = route('blog.show', $post->slug);

		return view('blog.show', [
			'settings' => $settings,
			'post' => $post,
			'relatedPosts' => $relatedPosts,
			'comments' => $comments,
			'renderedHeader' => $renderedHeader,
			'renderedFooter' => $renderedFooter,
			'meta' => [
				'title' => method_exists($post, 'translate') ? ($post->translate('meta_title') ?: $post->translate('title')) : ($post->meta_title ?? $post->title),
				'description' => method_exists($post, 'translate') ? ($post->translate('meta_description') ?: $post->translate('excerpt')) : ($post->meta_description ?? $post->excerpt),
				'image' => $post->featured_image ? asset('storage/' . $post->featured_image) : null,
				'og_type' => 'article',
			],
			'structuredData' => BlogStructuredData::forShow($post, $pageUrl),
		]);
	}

	public function storeComment(Request $request, string $slug)
	{
		if (!class_exists(Blog::class) || !class_exists(BlogComment::class)) {
			abort(404);
		}

		$post = Blog::published()
			->where('slug', $slug)
			->firstOrFail();

		if (!$post->allow_comments) {
			return redirect()->route('blog.show', $slug)
				->with('error', __('blog.comments_disabled'));
		}

		$validator = Validator::make($request->all(), [
			'name' => 'required|string|max:255',
			'email' => 'required|email|max:255',
			'content' => 'required|string|min:10',
			'parent_id' => 'nullable|exists:blog_comments,id',
		]);

		if ($validator->fails()) {
			return redirect()->route('blog.show', $slug)
				->withErrors($validator)
				->withInput();
		}

		$comment = BlogComment::create([
			'blog_id' => $post->id,
			'name' => $request->name,
			'email' => $request->email,
			'content' => $request->content,
			'parent_id' => $request->parent_id,
			'status' => 'pending', // Yorumlar onay bekliyor olarak kaydedilir
			'ip_address' => $request->ip(),
			'user_agent' => $request->userAgent(),
		]);

		return redirect()->route('blog.show', $slug)
			->with('success', __('blog.comment_submitted'));
	}
}