import { drizzle } from 'drizzle-orm/d1'
import { emails, messages } from '../app/lib/schema'
import { nanoid } from 'nanoid'

const TEST_USER_ID = '4e4c1d5d-a3c9-407a-8808-2a2424b38c62'

interface Env {
  DB: D1Database
}

const MAX_EMAIL_COUNT = 5
const MAX_MESSAGE_COUNT = 50
const BATCH_SIZE = 10 // SQLite 变量限制

async function generateTestData(env: Env) {
  const db = drizzle(env.DB)
  const now = new Date()

  try {
    // 生成测试邮箱
    const testEmails = Array.from({ length: MAX_EMAIL_COUNT }).map(() => ({
      id: crypto.randomUUID(),
      address: `${nanoid(6)}@moemail.app`,
      userId: TEST_USER_ID,
      createdAt: now,
      expiresAt: new Date(now.getTime() + 24 * 60 * 60 * 1000),
    }))

    // 插入测试邮箱
    const emailResults = await db.insert(emails).values(testEmails).returning()
    console.log('Created test emails:', emailResults)

    // 为每个邮箱生成测试消息
    for (const email of emailResults) {
      const allMessages = Array.from({ length: MAX_MESSAGE_COUNT }).map((_, index) => ({
        id: crypto.randomUUID(),
        emailId: email.id,
        fromAddress: `sender${index + 1}@example.com`,
        subject: `Test Message ${index + 1} - ${nanoid(6)}`,
        content: `This is test message ${index + 1} content.\n\nBest regards,\nSender ${index + 1}`,
        html: `<div>
          <h1>Test Message ${index + 1}</h1>
          <p>This is test message ${index + 1} content.</p>
          <p>With some <strong>HTML</strong> formatting.</p>
          <br>
          <p>Best regards,<br>Sender ${index + 1}</p>
        </div>`,
        receivedAt: new Date(now.getTime() - index * 60 * 60 * 1000),
      }))

      // 分批插入消息
      for (let i = 0; i < allMessages.length; i += BATCH_SIZE) {
        const batch = allMessages.slice(i, i + BATCH_SIZE)
        await db.insert(messages).values(batch)
        console.log(`Created batch of ${batch.length} messages for email ${email.address}`)
      }
    }

    console.log('Test data generation completed successfully!')
  } catch (error) {
    console.error('Failed to generate test data:', error)
  }
}

// eslint-disable-next-line import/no-anonymous-default-export
export default {
  async fetch(request: Request, env: Env) {
    if (request.method === 'GET') {
      await generateTestData(env)
      return new Response('Test data generated successfully', { status: 200 })
    }
    return new Response('Method not allowed', { status: 405 })
  }
}