import { NextRequest, NextResponse } from 'next/server';
import { getStaticArticleBySlug, getStaticArticles } from '../../../../lib/static-data';

// 为静态导出生成参数
export async function generateStaticParams() {
    const locales = ['zh-CN', 'zh-TW', 'en'];
    const allSlugs = new Set<string>();
    
    // 收集所有语言的文章slug
    for (const locale of locales) {
        try {
            const articles = getStaticArticles(locale as 'zh-CN' | 'zh-TW' | 'en');
            articles.forEach(article => allSlugs.add(article.slug));
        } catch (error) {
            console.warn(`Failed to get articles for locale ${locale}:`, error);
        }
    }
    
    return Array.from(allSlugs).map((slug) => ({
        slug,
    }));
}

export async function GET(
    request: NextRequest,
    { params }: { params: { slug: string } }
) {
    try {
        const { searchParams } = new URL(request.url);
        const locale = searchParams.get('locale') || 'zh-CN';
        const slug = params.slug;

        // 映射locale格式
        const mappedLocale = locale === 'zh' ? 'zh-CN' : locale as 'zh-CN' | 'zh-TW' | 'en';
        
        // 获取指定文章
        const article = getStaticArticleBySlug(slug, mappedLocale);
        
        if (!article) {
            return NextResponse.json(
                { error: 'Article not found' },
                { status: 404 }
            );
        }

        // 获取相关文章
        const allArticles = getStaticArticles(mappedLocale);
        const relatedArticles = allArticles
            .filter(a => a.slug !== slug && a.metadata.category === article.metadata.category)
            .slice(0, 3);

        return NextResponse.json({
            article,
            relatedArticles
        });
    } catch (error) {
        console.error('Error fetching article:', error);
        return NextResponse.json(
            { error: 'Failed to fetch article' },
            { status: 500 }
        );
    }
}