import { NextRequest, NextResponse } from "next/server"
import { WebhookClient, RequestMachineFormWebhookData } from "@/lib/webhook-client"

interface RequestMachineFormData extends RequestMachineFormWebhookData {}

export async function POST(request: NextRequest) {
  try {
    const body = await request.json()
    const formData: RequestMachineFormData = body

    // Validate required fields
    const requiredFields = ['firstName', 'lastName', 'email', 'phone', 'company', 'employeeCount', 'machineType', 'machineCount']
    const missingFields = requiredFields.filter(field => !formData[field])

    if (missingFields.length > 0) {
      return NextResponse.json(
        { error: `Missing required fields: ${missingFields.join(', ')}` },
        { status: 400 }
      )
    }

    // Basic email validation
    const emailRegex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/
    if (!emailRegex.test(formData.email)) {
      return NextResponse.json(
        { error: 'Invalid email address' },
        { status: 400 }
      )
    }

    // Basic phone validation (remove all non-digit characters)
    const phoneDigits = formData.phone.replace(/\D/g, '')
    if (phoneDigits.length < 10) {
      return NextResponse.json(
        { error: 'Invalid phone number' },
        { status: 400 }
      )
    }

    // Validate employee count
    const employeeCount = parseInt(formData.employeeCount)
    if (isNaN(employeeCount) || employeeCount < 1 || employeeCount > 10000) {
      return NextResponse.json(
        { error: 'Invalid number of employees/people' },
        { status: 400 }
      )
    }

    // Validate machine count
    const machineCount = parseInt(formData.machineCount)
    if (isNaN(machineCount) || machineCount < 1 || machineCount > 100) {
      return NextResponse.json(
        { error: 'Invalid number of machines' },
        { status: 400 }
      )
    }

    // Validate consent and agreement
    if (!formData.marketingConsent) {
      return NextResponse.json(
        { error: 'Marketing consent is required' },
        { status: 400 }
      )
    }

    if (!formData.termsAgreement) {
      return NextResponse.json(
        { error: 'Terms agreement is required' },
        { status: 400 }
      )
    }

    // Submit to webhook
    const webhookResult = await WebhookClient.submitRequestMachineForm(formData)

    if (!webhookResult.success) {
      console.error('Machine request webhook submission failed:', webhookResult.error)
      return NextResponse.json(
        { error: webhookResult.message },
        { status: 500 }
      )
    }

    console.log('Successfully submitted machine request form to GHL:', formData)

    // Return success response
    return NextResponse.json({
      success: true,
      message: webhookResult.message
    })

  } catch (error) {
    console.error('Machine request form submission error:', error)
    
    return NextResponse.json(
      { error: 'Internal server error' },
      { status: 500 }
    )
  }
}