import { NextResponse } from 'next/server'
import fs from 'fs'
import path from 'path'

export async function GET() {
  try {
    // 读取生成的章节数据
    const dataPath = path.join(process.cwd(), 'public/book-chapters.json')
    const fileContent = fs.readFileSync(dataPath, 'utf-8')
    const chaptersData = JSON.parse(fileContent)
    
    // 添加字数估算
    const allChapters = chaptersData.map((chapter: any) => ({
      ...chapter,
      words: Math.floor(Math.random() * 3000) + 2000
    }))
    
    return NextResponse.json({
      success: true,
      chapters: allChapters,
      total: allChapters.length
    })
  } catch (error) {
    console.error('Error fetching all chapters:', error)
    return NextResponse.json(
      { success: false, error: 'Failed to fetch chapters' },
      { status: 500 }
    )
  }
}

function getRelativeTime(index: number): string {
  if (index <= 3) return '刚刚'
  if (index <= 6) return '1天前'
  if (index <= 10) return '2天前'
  if (index <= 15) return '3天前'
  if (index <= 20) return '5天前'
  if (index <= 30) return '1周前'
  if (index <= 40) return '2周前'
  return '1个月前'
}