feat: list mode 50/page, card mode left-image rows, AI cover generation command

- blog_paginate: 纯列表模式每页 50 条（list_per_page 可调），其余模式仍走 per_page - 图文(card)模式：卡片网格改为左图右文横排，小屏回退竖排；摘要放宽到 100 字 - 新增 covers:generate：复用 AI 设置的 LLM 配置调 /image_generation（默认 image-01），为无封面文章批量生成封面存入 media cover 集合；支持 --all/--limit/--post/--style/--dry-run - AI 设置页新增图片模型、封面风格两项配置 - 修正 HomeViewModeTest：列表模式为纯标题（不再显示摘要），并断言每页 50 条与图文布局
2026-10-13 23:58:15 +00:00
parent 16dac8b568
commit 57b6221d90
7 changed files with 202 additions and 44 deletions
@@ -0,0 +1,148 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Console\Commands;
+
+use App\Blog\Services\LlmClient;
+use App\Models\Post;
+use Illuminate\Console\Command;
+use Illuminate\Support\Facades\Http;
+use Illuminate\Support\Facades\Log;
+use Illuminate\Support\Str;
+
+/**
+ * 用 AI 图像接口（OpenAI 兼容 /image_generation，如 MiniMax image-01）批量生成文章封面。
+ * 复用「AI 设置」里的 llm_base_url / llm_api_key，模型取 llm_image_model（默认 image-01）。
+ */
+class GenerateCovers extends Command
+{
+    protected $signature = 'covers:generate
+        {--all : 全部重新生成（默认只处理没有任何封面图的文章）}
+        {--limit= : 最多处理多少篇}
+        {--post= : 只处理指定文章 ID，逗号分隔}
+        {--model= : 图片模型，覆盖 llm_image_model 设置}
+        {--style= : 附加到提示词的风格描述}
+        {--dry-run : 只列出将处理的文章，不调用接口}';
+
+    protected $description = '用 AI 为文章批量生成封面图（存入 media cover 集合）';
+
+    public function handle(LlmClient $llm): int
+    {
+        if (! $llm->isConfigured()) {
+            $this->error('LLM 未配置：请先在后台「AI 设置」或 .env 配置 LLM_BASE_URL / LLM_API_KEY');
+
+            return self::FAILURE;
+        }
+
+        $model = (string) ($this->option('model') ?: blog_setting('llm_image_model', 'image-01'));
+
+        $query = Post::query()->published()->orderedForList();
+
+        if ($ids = trim((string) $this->option('post'))) {
+            $query->whereIn('id', array_filter(array_map('intval', explode(',', $ids))));
+        }
+
+        $todo = $query->get()
+            ->filter(fn (Post $post) => $this->option('all') || $post->coverOrFirstImageUrl() === null)
+            ->values();
+
+        if ($limit = (int) $this->option('limit')) {
+            $todo = $todo->take($limit)->values();
+        }
+
+        if ($todo->isEmpty()) {
+            $this->info('没有需要生成封面的文章。');
+
+            return self::SUCCESS;
+        }
+
+        $this->info("待处理 {$todo->count()} 篇，模型 {$model}");
+
+        if ($this->option('dry-run')) {
+            foreach ($todo as $post) {
+                $this->line("[{$post->id}] {$post->title}");
+            }
+
+            return self::SUCCESS;
+        }
+
+        $ok = 0;
+        $fail = 0;
+
+        foreach ($todo as $post) {
+            try {
+                $this->generateFor($post, $llm, $model);
+                $ok++;
+                $this->info("✔ [{$post->id}] {$post->title}");
+            } catch (\Throwable $e) {
+                $fail++;
+                $this->warn("✘ [{$post->id}] {$post->title}：{$e->getMessage()}");
+                Log::warning('covers:generate 失败', ['post_id' => $post->id, 'error' => $e->getMessage()]);
+            }
+        }
+
+        $this->info("完成：成功 {$ok}，失败 {$fail}");
+
+        return $ok === 0 && $fail > 0 ? self::FAILURE : self::SUCCESS;
+    }
+
+    private function generateFor(Post $post, LlmClient $llm, string $model): void
+    {
+        $response = Http::timeout(120)
+            ->withToken($llm->apiKey())
+            ->post($llm->baseUrl().'/image_generation', [
+                'model' => $model,
+                'prompt' => $this->buildPrompt($post),
+                'aspect_ratio' => '16:9',
+                'response_format' => 'url',
+                'n' => 1,
+                'prompt_optimizer' => true,
+            ]);
+
+        if ($response->failed()) {
+            throw new \RuntimeException('HTTP '.$response->status().'：'.Str::limit($response->body(), 200));
+        }
+
+        $url = $response->json('data.image_urls.0');
+        if (! is_string($url) || $url === '') {
+            $reason = $response->json('base_resp.status_msg') ?: $response->body();
+
+            throw new \RuntimeException('接口未返回图片：'.Str::limit((string) $reason, 200));
+        }
+
+        $image = Http::timeout(60)->get($url)->throw();
+        $ext = match (strtolower(explode(';', (string) $image->header('Content-Type'))[0])) {
+            'image/png' => 'png',
+            'image/webp' => 'webp',
+            default => 'jpg',
+        };
+
+        $tmp = tempnam(sys_get_temp_dir(), 'cover_');
+        file_put_contents($tmp, $image->body());
+
+        try {
+            $post->addMedia($tmp)
+                ->usingFileName('cover-'.$post->id.'.'.$ext)
+                ->toMediaCollection('cover');
+        } finally {
+            @unlink($tmp);
+        }
+    }
+
+    private function buildPrompt(Post $post): string
+    {
+        $style = trim((string) ($this->option('style')
+            ?: blog_setting('cover_prompt_style', '扁平插画风格，色调柔和，构图简洁')));
+        $excerpt = Str::limit(trim(strip_tags((string) $post->excerpt)), 60, '');
+
+        $parts = ["为博客文章《{$post->title}》生成一张封面配图"];
+        if ($excerpt !== '') {
+            $parts[] = "内容大意：{$excerpt}";
+        }
+        $parts[] = $style;
+        $parts[] = '画面中不要出现任何文字';
+
+        return implode('。', $parts);
+    }
+}