import express from 'express';

const app = express();
app.use(express.json());

const TWENTY_CRM_URL = process.env.TWENTY_CRM_URL || 'https://crm.ai-impress.com';
const TWENTY_CRM_API_KEY = process.env.TWENTY_CRM_API_KEY || '';

async function createLeadInCRM({ fullName, workEmail, companyName, jobTitle, phoneNumber, need, source }) {
  if (!TWENTY_CRM_API_KEY || !workEmail) return;
  const headers = { Authorization: `Bearer ${TWENTY_CRM_API_KEY}`, 'Content-Type': 'application/json' };
  try {
    // Split name
    const parts = fullName.trim().split(/\s+/);
    const firstName = parts[0] || '';
    const lastName = parts.slice(1).join(' ') || '';

    // Create or find company
    let companyId = null;
    if (companyName) {
      const compRes = await fetch(`${TWENTY_CRM_URL}/rest/companies`, { headers, method: 'GET' });
      // Search not reliable, just create
      const createComp = await fetch(`${TWENTY_CRM_URL}/rest/companies`, {
        method: 'POST', headers, body: JSON.stringify({ name: companyName }),
      });
      if (createComp.status === 201) {
        const cd = await createComp.json();
        companyId = cd.data?.createCompany?.id;
      }
    }

    // Create person
    const personBody = {
      name: { firstName, lastName },
      emails: { primaryEmail: workEmail, additionalEmails: [] },
    };
    if (companyId) personBody.companyId = companyId;
    if (jobTitle) personBody.jobTitle = jobTitle;
    if (phoneNumber) personBody.phones = {
      primaryPhoneNumber: phoneNumber, primaryPhoneCountryCode: '', primaryPhoneCallingCode: '', additionalPhones: [],
    };

    const personRes = await fetch(`${TWENTY_CRM_URL}/rest/people`, {
      method: 'POST', headers, body: JSON.stringify(personBody),
    });
    if (personRes.status === 201) {
      const pd = await personRes.json();
      const personId = pd.data?.createPerson?.id;
      // Create note
      if (personId && need) {
        const noteRes = await fetch(`${TWENTY_CRM_URL}/rest/notes`, {
          method: 'POST', headers, body: JSON.stringify({ title: `${source}: ${need}` }),
        });
        if (noteRes.status === 201) {
          const nd = await noteRes.json();
          const noteId = nd.data?.createNote?.id;
          if (noteId) {
            await fetch(`${TWENTY_CRM_URL}/rest/noteTargets`, {
              method: 'POST', headers, body: JSON.stringify({ noteId, personId }),
            });
          }
        }
      }
      console.log(`CRM lead created: ${personId} (${fullName})`);
      // Create opportunity in NEW stage
      const oppBody = { name: `${fullName} — ${(need || 'Contact form').substring(0, 50)}`, stage: 'NEW' };
      if (companyId) oppBody.companyId = companyId;
      if (personId) oppBody.pointOfContactId = personId;
      await fetch(`${TWENTY_CRM_URL}/rest/opportunities`, {
        method: 'POST', headers, body: JSON.stringify(oppBody),
      });
    }
  } catch (err) {
    console.error('CRM error:', err.message);
  }
}

app.post('/api/contact', async (req, res) => {
  const { fullName, workEmail, companyName, jobTitle, automationNeed, phoneNumber } = req.body;

  if (!fullName || !workEmail) {
    return res.status(400).json({ error: 'Missing required fields' });
  }

  try {
    const response = await fetch('https://api.resend.com/emails', {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${process.env.RESEND_API_KEY}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        from: 'AImpress Website <noreply@ai-impress.com>',
        to: ['hello@ai-impress.com'],
        subject: `New lead: ${fullName} — ${companyName || 'N/A'}`,
        html: `
          <h2>New Contact Form Submission</h2>
          <p><strong>Name:</strong> ${fullName}</p>
          <p><strong>Email:</strong> ${workEmail}</p>
          <p><strong>Company:</strong> ${companyName || 'N/A'}</p>
          <p><strong>Job Title:</strong> ${jobTitle || 'N/A'}</p>
          <p><strong>Automation Need:</strong> ${automationNeed || 'N/A'}</p>
          <p><strong>Phone:</strong> ${phoneNumber || 'N/A'}</p>
        `,
      }),
    });

    if (!response.ok) {
      const err = await response.text();
      console.error('Resend error:', err);
      return res.status(502).json({ error: 'Email delivery failed' });
    }

    // Create lead in CRM (async, don't block response)
    createLeadInCRM({ fullName, workEmail, companyName, jobTitle, phoneNumber, need: automationNeed, source: 'Contact form' });

    res.json({ ok: true });
  } catch (err) {
    console.error('Email error:', err);
    res.status(500).json({ error: 'Internal error' });
  }
});

app.post('/api/quote', async (req, res) => {
  const { fullName, workEmail, companyName, jobTitle, phoneNumber, service, projectDescription } = req.body;

  if (!fullName || !workEmail || !service || !projectDescription) {
    return res.status(400).json({ error: 'Missing required fields' });
  }

  try {
    const response = await fetch('https://api.resend.com/emails', {
      method: 'POST',
      headers: {
        'Authorization': `Bearer ${process.env.RESEND_API_KEY}`,
        'Content-Type': 'application/json',
      },
      body: JSON.stringify({
        from: 'AImpress Website <noreply@ai-impress.com>',
        to: ['hello@ai-impress.com'],
        subject: `Quote request: ${fullName} — ${service}`,
        html: `
          <h2>New Quote Request</h2>
          <p><strong>Name:</strong> ${fullName}</p>
          <p><strong>Email:</strong> ${workEmail}</p>
          <p><strong>Company:</strong> ${companyName || 'N/A'}</p>
          <p><strong>Job Title:</strong> ${jobTitle || 'N/A'}</p>
          <p><strong>Phone:</strong> ${phoneNumber || 'N/A'}</p>
          <hr>
          <p><strong>Service:</strong> ${service}</p>
          <p><strong>Project Description:</strong></p>
          <p>${projectDescription.replace(/\n/g, '<br>')}</p>
        `,
      }),
    });

    if (!response.ok) {
      const err = await response.text();
      console.error('Resend error:', err);
      return res.status(502).json({ error: 'Email delivery failed' });
    }

    // Create lead in CRM (async, don't block response)
    createLeadInCRM({ fullName, workEmail, companyName, jobTitle, phoneNumber, need: `${service}: ${projectDescription}`, source: 'Quote request' });

    res.json({ ok: true });
  } catch (err) {
    console.error('Email error:', err);
    res.status(500).json({ error: 'Internal error' });
  }
});

app.listen(3001, () => console.log('Email API listening on :3001'));