###A Production Ready Firebase cloud function to handle Paytm Transaction Token Generation
Just make a HTTP request from the client side and receive a Paytm Transaction Token.
It follows the docs of Initiate Transaction API
The HTTP request should contain Paytm Merchant ID - MID, ORDER_ID, TXN_Amount, Customer ID, mode.
| Params | Type | Required |
|---|---|---|
| MID | String | Yes |
| ORDER_ID | String | Yes |
| TXN_AMOUNT | String | Yes |
| CUST_ID | String | Yes |
| CALLBACK_URL | String | Optional |
| mode | String | Optional |