Cloudflare Workers 实现 Resend 邮件发送接口

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[前端页面]
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   |
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   | POST /api/contact
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   |
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[Cloudflare Worker]
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   |
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   | 调用 Resend API
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   |
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[目标邮箱]

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export default {
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  async fetch(request, env) {
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    if (request.method !== 'POST') {
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      return new Response('Method Not Allowed', { status: 405 })
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    }
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    const body = await request.json()
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    const { email, name, phone, message } = body
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    // 简单校验
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    if (!email || !name || !message) {
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      return new Response(
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        JSON.stringify({ error: 'Missing required fields' }),
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        { status: 400 }
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      )
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    }
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    const res = await fetch('https://api.resend.com/emails', {
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      method: 'POST',
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      headers: {
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        'Authorization': `Bearer ${env.RESEND_API_KEY}`,
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        'Content-Type': 'application/json'
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      },
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      body: JSON.stringify({
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        from: 'Contact Form <[email protected]>',
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        to: ['[email protected]'],
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        subject: '新的用户留言',
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        html: `
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          <h3>新的用户提交</h3>
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          <p><b>姓名:</b>${name}</p>
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          <p><b>邮箱:</b>${email}</p>
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          <p><b>手机号:</b>${phone || '-'}</p>
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          <p><b>留言:</b>${message}</p>
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        `
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      })
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    })
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    if (!res.ok) {
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      const err = await res.text()
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      return new Response(err, { status: 500 })
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    }
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    return new Response(
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      JSON.stringify({ success: true }),
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      { headers: { 'Content-Type': 'application/json' } }
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    )
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  }
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}

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await fetch('https://your-worker.workers.dev/api/contact', {
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  method: 'POST',
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  headers: {
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    'Content-Type': 'application/json'
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  },
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  body: JSON.stringify({
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    email: '[email protected]',
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    name: 'Tom',
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    phone: '123456789',
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    message: '我想了解下你们的服务'
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  })
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})

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headers: {
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  'Access-Control-Allow-Origin': 'https://your-site.com'
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}