async function initiateTransaction(req, res) {
try {
const {
method,
phone,
token,
merchanttrace = TRACE-${Date.now()},
reference,
amount,
additionalinfo,
authemail,
authphone,
authname,
tokenize = false
} = req.body;
console.log('Request body received:', req.body);
// Enhanced validation
if (!method || !reference || !amount) {
console.log('Validation Error: Required fields missing');
return res.status(400).json({
success: false,
error: 'Required fields missing: method, reference, and amount are mandatory'
});
}
console.log('Validation passed: method, reference, and amount');
// Validate payment method
const validMethods = ['zimswitch', 'vmc', 'ecocash', 'onemoney', 'innbucks', 'paygo'];
if (!validMethods.includes(method)) {
console.log(`Validation Error: Invalid payment method - ${method}`);
return res.status(400).json({
success: false,
error: `Invalid payment method. Must be one of: ${validMethods.join(', ')}`
});
}
console.log('Payment method validated:', method);
// Validate phone number for mobile money methods
if (['ecocash', 'onemoney'].includes(method) && (!phone || !/^263[7|8]\d{8}$/.test(phone))) {
console.log('Validation Error: Valid phone number required for mobile money payments');
return res.status(400).json({
success: false,
error: 'Valid phone number required for mobile money payments'
});
}
console.log('Phone number validated:', phone);
// Validate token for card payments
if (['vmc', 'zimswitch'].includes(method) && token && token.length < 32) {
console.log('Validation Error: Invalid card token');
return res.status(400).json({
success: false,
error: 'Invalid card token'
});
}
console.log('Token validated:', token);
const fields = {
id: 19806,
reference,
amount,
additionalinfo: additionalinfo || reference,
returnurl: "http://www.google.com/search?q=returnurl",
resulturl: "http://www.google.com/search?q=resulturl",
authemail: authemail || '',
authphone: authphone || phone || '',
authname: authname || '',
method,
phone: phone || '',
status: 'Message'
};
console.log('Fields prepared for hash generation:', fields);
// Generate hash
fields.hash = generateHash(fields, 'f23a9773-9a0d-42b4-8c08-c708ee92135e');
console.log('Hash generated:', fields.hash);
console.log('Request sent to Paynow:', fields);
const response = await axios.post(
`https://www.paynow.co.zw/interface/initiatetransaction`,
fields,
{
headers: {
'Content-Type': 'application/x-www-form-urlencoded'
}
}
);
console.log('Response from Paynow:', response.data);
const responseData = parsePaynowResponse(response.data);
console.log('Parsed Paynow response:', responseData);
if (responseData.status.toLowerCase() === 'error') {
console.log('Error in Paynow response:', responseData.error);
return res.status(400).json({
success: false,
error: responseData.error
});
}
// Format response based on payment method
const formattedResponse = formatPaymentResponse(method, responseData);
return res.status(200).json(formattedResponse);
} catch (error) {
console.error('Transaction initiation error:', error);
return res.status(500).json({
success: false,
error: 'Payment initiation failed. Please try again.'
});
}
}
this is my node.js controller
function generateHash(fields, integrationKey) {
const concatenatedValues =
`${fields.id}${fields.reference}${fields.amount}${fields.additionalinfo}${fields.returnurl}${fields.resulturl}${fields.status}`;
console.log('>>>>>>>>>>>>>>>>>'+concatenatedValues);
const stringToHash = concatenatedValues + integrationKey;
console.log('>>>>>>adding_key>>>>>>>>>>>'+stringToHash);
const hash = crypto.createHash('sha512').update(stringToHash).digest('hex').toUpperCase();
return hash;
}
this is my generate hash i am still getting the error .My credentials are correct