// Cloudflare Pages Function for waitlist
// This will run on Cloudflare's edge network

interface Env {
  WAITLIST: KVNamespace
}

export async function onRequestPost(context: { request: Request; env: Env }) {
  try {
    const { email } = await context.request.json()

    if (!email || !email.includes('@')) {
      return new Response(
        JSON.stringify({ error: 'Valid email required' }),
        { status: 400, headers: { 'Content-Type': 'application/json' } }
      )
    }

    // Check if email already exists using Cloudflare KV
    const existing = await context.env.WAITLIST?.get(email)
    
    if (existing) {
      return new Response(
        JSON.stringify({ error: 'Already in the network' }),
        { status: 400, headers: { 'Content-Type': 'application/json' } }
      )
    }

    // Store email with timestamp in KV
    await context.env.WAITLIST?.put(email, JSON.stringify({
      email,
      timestamp: new Date().toISOString(),
    }))

    return new Response(
      JSON.stringify({
        success: true,
        message: 'Welcome to the underground',
      }),
      { status: 200, headers: { 'Content-Type': 'application/json' } }
    )
  } catch (error) {
    return new Response(
      JSON.stringify({ error: 'Network error occurred' }),
      { status: 500, headers: { 'Content-Type': 'application/json' } }
    )
  }
}

// Optional: GET endpoint to check waitlist count
export async function onRequestGet(context: { env: Env }) {
  try {
    const list = await context.env.WAITLIST?.list()
    return new Response(
      JSON.stringify({ count: list?.keys.length || 0 }),
      { status: 200, headers: { 'Content-Type': 'application/json' } }
    )
  } catch (error) {
    return new Response(
      JSON.stringify({ error: 'Network error' }),
      { status: 500, headers: { 'Content-Type': 'application/json' } }
    )
  }
}