<?php

namespace app\common\command;

use app\api\logic\ArticleLogic;
use app\common\enum\YesNoEnum;
use app\common\model\article\Article;
use think\console\Command;
use think\console\Input;
use think\console\Output;

class WorldcupArticleTranslate extends Command
{
    protected function configure()
    {
        $this->setName('worldcup_article_translate')
            ->setDescription('预热世界杯英文资讯翻译缓存');
    }

    protected function execute(Input $input, Output $output)
    {
        $articles = Article::field('id,cid,title,desc,content,ext,is_show,delete_time')
            ->where('cid', 22)
            ->where('is_show', YesNoEnum::YES)
            // 与前台世界杯资讯列表保持一致，只预热用户最先看到的 50 条。
            ->order('published_at', 'desc')
            ->order('id', 'desc')
            ->limit(50)
            ->select()
            ->toArray();

        if (empty($articles)) {
            $output->writeln('<comment>[WorldcupTranslate] 没有找到可处理的世界杯文章</comment>');
            return 0;
        }

        $translated = 0;
        $skippedExist = 0;
        $skippedNonEnglish = 0;
        $failed = 0;

        foreach ($articles as $article) {
            $ext = $this->decodeExt($article['ext'] ?? []);
            if (!empty($ext['translated_content'])) {
                $skippedExist++;
                continue;
            }

            if (!$this->isProbablyEnglish($article)) {
                $skippedNonEnglish++;
                continue;
            }

            try {
                $result = ArticleLogic::autoTranslateArticle($article);
                if ($result !== '') {
                    $translated++;
                    $output->writeln(sprintf('[WorldcupTranslate] 已翻译文章 #%d %s', $article['id'], $article['title'] ?? ''));
                } else {
                    $failed++;
                    $output->writeln(sprintf('<comment>[WorldcupTranslate] 翻译失败或无结果 #%d %s</comment>', $article['id'], $article['title'] ?? ''));
                }
            } catch (\Throwable $e) {
                $failed++;
                $output->writeln(sprintf('<error>[WorldcupTranslate] 异常 #%d %s - %s</error>', $article['id'], $article['title'] ?? '', $e->getMessage()));
            }
        }

        $output->writeln(sprintf(
            '[WorldcupTranslate] 完成，翻译 %d 条，已存在 %d 条，跳过非英文 %d 条，失败 %d 条',
            $translated,
            $skippedExist,
            $skippedNonEnglish,
            $failed
        ));

        return 0;
    }

    private function isProbablyEnglish(array $article): bool
    {
        $text = trim(implode(' ', [
            (string) ($article['title'] ?? ''),
            (string) ($article['desc'] ?? ''),
            $this->normalizeText((string) ($article['content'] ?? '')),
        ]));

        if ($text === '') {
            return false;
        }

        if (preg_match('/[\x{4e00}-\x{9fff}]/u', $text)) {
            return false;
        }

        $letterCount = preg_match_all('/[A-Za-z]/', $text);
        $wordCount = preg_match_all('/\b[A-Za-z]{2,}\b/', $text);

        // 世界杯资讯里不少正文并不长，阈值过高会误杀正常英文稿件。
        return $letterCount >= 30 && $wordCount >= 5;
    }

    private function normalizeText(string $content): string
    {
        if ($content === '') {
            return '';
        }

        $content = strip_tags($content);
        $content = html_entity_decode($content, ENT_QUOTES | ENT_HTML5, 'UTF-8');
        $content = preg_replace('/\s+/u', ' ', $content);

        return trim($content);
    }

    private function decodeExt($ext): array
    {
        if (is_array($ext)) {
            return $ext;
        }

        if (is_string($ext) && $ext !== '') {
            $data = json_decode($ext, true);
            return is_array($data) ? $data : [];
        }

        return [];
    }
}