exports.sendOtp = async (req, res) => {
  try {
    const { phone, name, otpToUse, verificationLink, isExisting } = req.body;

    if (!phone || !otpToUse) {
      return res.status(400).json({ success: false, message: 'Phone and OTP required' });
    }

    // Mock WhatsApp API call
    console.log(`[WhatsApp Mock] Sending OTP ${otpToUse} to ${phone}`);
    console.log(`[WhatsApp Mock] Verification Link: ${verificationLink}`);
    
    // In production, use axios to call the real WhatsApp provider API here.
    /*
    await axios.post(process.env.WHATSAPP_API_URL, {
      to: phone,
      type: "template",
      template: { ... }
    }, {
      headers: { 'Authorization': `Bearer ${process.env.WHATSAPP_API_KEY}` }
    });
    */

    res.json({ success: true, message: 'OTP sent via WhatsApp successfully' });
  } catch (error) {
    console.error('Error sending WhatsApp OTP:', error);
    res.status(500).json({ success: false, message: 'Failed to send OTP' });
  }
};

exports.sendReport = async (req, res) => {
  try {
    const { phone, name, overallScore, origin } = req.body;

    if (!phone || overallScore === undefined) {
      return res.status(400).json({ success: false, message: 'Phone and overallScore required' });
    }

    // Mock WhatsApp API call
    console.log(`[WhatsApp Mock] Sending Report (Score: ${overallScore}) to ${phone}`);
    
    res.json({ success: true, message: 'Report sent via WhatsApp successfully' });
  } catch (error) {
    console.error('Error sending WhatsApp Report:', error);
    res.status(500).json({ success: false, message: 'Failed to send report' });
  }
};