import { NextRequest, NextResponse } from 'next/server';
import { writeFile } from 'fs/promises';
import { join } from 'path';

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

        // Extrair campos do FormData
        const personType = formData.get('person_type') as string;
        const email = formData.get('email') as string;
        const phone = formData.get('phone') as string;
        const cpf = formData.get('cpf') as string || '';
        const fullName = formData.get('full_name') as string || '';
        const cnpj = formData.get('cnpj') as string || '';
        const companyName = formData.get('company_name') as string || '';
        const tradeName = formData.get('trade_name') as string || '';
        const postalCode = formData.get('postal_code') as string || '';
        const street = formData.get('street') as string || '';
        const number = formData.get('number') as string || '';
        const complement = formData.get('complement') as string || '';
        const neighborhood = formData.get('neighborhood') as string || '';
        const city = formData.get('city') as string || '';
        const state = formData.get('state') as string || '';
        const message = formData.get('message') as string || '';
        const logoFile = formData.get('logo') as File | null;

        // Validar campos obrigatórios
        if (!email || !phone) {
            return NextResponse.json(
                { error: 'E-mail e telefone são obrigatórios' },
                { status: 400 }
            );
        }

        // Validar campos específicos por tipo
        if (personType === 'pf') {
            if (!cpf || !fullName) {
                return NextResponse.json(
                    { error: 'CPF e Nome Completo são obrigatórios para Pessoa Física' },
                    { status: 400 }
                );
            }
        } else if (personType === 'pj') {
            if (!cnpj || !companyName) {
                return NextResponse.json(
                    { error: 'CNPJ e Razão Social são obrigatórios para Pessoa Jurídica' },
                    { status: 400 }
                );
            }
        }

        // Processar upload de logo
        let logoPath = '';
        if (logoFile && logoFile.size > 0) {
            try {
                const bytes = await logoFile.arrayBuffer();
                const buffer = Buffer.from(bytes);

                // Criar nome único para o arquivo
                const timestamp = Date.now();
                const fileExt = logoFile.name.split('.').pop();
                const fileName = `logo-${timestamp}.${fileExt}`;
                const uploadDir = join(process.cwd(), 'public', 'uploads', 'logos');
                logoPath = `/uploads/logos/${fileName}`;

                // Salvar arquivo (em produção, use S3, Cloudinary, etc.)
                await writeFile(join(uploadDir, fileName), buffer);
            } catch (uploadError) {
                console.error('Error uploading logo:', uploadError);
                // Continuar sem logo em caso de erro
            }
        }

        // Buscar tenant_id do subdomínio (por enquanto hardcoded como 1)
        const tenantId = 1;

        // Preparar nome baseado no tipo
        const customerName = personType === 'pf' ? fullName : (tradeName || companyName);

        // Preparar endereço completo
        const addressParts = [street, number, complement, neighborhood, city, state, postalCode].filter(Boolean);
        const fullAddress = addressParts.join(', ');

        // Criar o cliente no backend
        const response = await fetch('http://aggios-backend:8080/api/crm/customers', {
            method: 'POST',
            headers: { 'Content-Type': 'application/json' },
            body: JSON.stringify({
                tenant_id: tenantId,
                name: customerName,
                email: email,
                phone: phone,
                company: personType === 'pj' ? companyName : '',
                address: fullAddress,
                notes: JSON.stringify({
                    person_type: personType,
                    cpf, cnpj, full_name: fullName, company_name: companyName, trade_name: tradeName,
                    postal_code: postalCode, street, number, complement, neighborhood, city, state,
                    message, logo_path: logoPath,
                }),
                status: 'lead',
                source: 'cadastro_publico',
            }),
        });

        if (!response.ok) {
            const errorData = await response.json();
            throw new Error(errorData.error || 'Erro ao criar cadastro');
        }

        const data = await response.json();

        return NextResponse.json({
            message: 'Cadastro realizado com sucesso! Você receberá um e-mail com as credenciais.',
            customer_id: data.customer?.id,
        });
    } catch (error: any) {
        console.error('Register error:', error);
        return NextResponse.json(
            { error: error.message || 'Erro ao processar cadastro' },
            { status: 500 }
        );
    }
}