import { NextRequest, NextResponse } from 'next/server'
import { getDb } from '@/lib/db'
import { initDatabase } from '@/lib/db-schema'
import { getCurrentUser } from '@/lib/auth'
import { hasPermission } from '@/lib/permissions'
import { generateMonthlyReport } from '@/lib/monthly-report'
import { generateWeeklyReport } from '@/lib/weekly-report'

export async function POST(
  _request: NextRequest,
  { params }: { params: Promise<{ id: string }> }
) {
  try {
    initDatabase()
    const user = await getCurrentUser()
    if (!user) return NextResponse.json({ error: '未登录' }, { status: 401 })
    if (!hasPermission(user, 'reports:create')) {
      return NextResponse.json({ error: '权限不足' }, { status: 403 })
    }

    const { id } = await params
    const db = getDb()
    const report = db.prepare('SELECT * FROM reports WHERE id = ?').get(id) as any

    if (!report) {
      return NextResponse.json({ error: '报告不存在' }, { status: 404 })
    }

    if (report.status !== 'ready' && report.status !== 'failed') {
      return NextResponse.json(
        { error: `当前状态 "${report.status}" 不允许生成文档` },
        { status: 409 }
      )
    }

    db.prepare("UPDATE reports SET status = 'generating', error_message = NULL WHERE id = ?")
      .run(id)

    if (report.report_type === 'weekly') {
      generateWeeklyReport(Number(id)).catch(err => {
        console.error(`Weekly report generation failed for report ${id}:`, err)
      })
    } else {
      generateMonthlyReport(Number(id)).catch(err => {
        console.error(`Report generation failed for report ${id}:`, err)
      })
    }

    const updated = db.prepare('SELECT * FROM reports WHERE id = ?').get(id)
    return NextResponse.json({ report: updated })
  } catch (e) {
    const msg = e instanceof Error ? e.message : '生成失败'
    return NextResponse.json({ error: msg }, { status: 500 })
  }
}