From 569cc6cd16cdfcf075cae5326b4c51e571ebb321 Mon Sep 17 00:00:00 2001
From: Arjun Dandagi <arjun.dandagi@walmartlabs.com>
Date: Fri, 2 Oct 2020 21:21:27 +0530
Subject: [PATCH] add support for python module

---
 .gitignore             |  6 ++++
 src/python/__init__.py |  0
 src/python/ifsc.py     | 64 ++++++++++++++++++++++++++++++++++++++++++
 3 files changed, 70 insertions(+)
 create mode 100644 src/python/__init__.py
 create mode 100644 src/python/ifsc.py

diff --git a/.gitignore b/.gitignore
index 42f6d68d..a2ceb61b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -44,3 +44,9 @@ InstalledFiles
 
 # One-off scripts
 *.php
+
+#python
+.idea
+venv
+__pycache__
+.pyc
diff --git a/src/python/__init__.py b/src/python/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/src/python/ifsc.py b/src/python/ifsc.py
new file mode 100644
index 00000000..b415e0c7
--- /dev/null
+++ b/src/python/ifsc.py
@@ -0,0 +1,64 @@
+import requests
+import json
+
+
+class IFSC(object):
+    """ A client for accessing the Razorpay API. """
+
+    """
+        Initializes the Twilio Client
+        sets the BASE_URL
+        :returns IFSC object
+    """
+
+    def __init__(self):
+        self.BASE_URL = 'https://ifsc.razorpay.com/'
+        with open("../IFSC.json") as json_file:
+            self.bankdata = json.loads(json_file.read())
+        pass
+
+    """
+    validate
+    :returns True if the code is valid
+    """
+
+    def validate(self, code: str):
+        if len(code) != 11:
+            return False
+        if code[4] != '0':
+            return False
+        _bankcode = code[0:4].upper()
+        _branchcode = code[5:].upper()
+
+        if not _bankcode in self.bankdata:
+            return False
+
+        _banklist = set(self.bankdata[_bankcode])
+
+        if _branchcode.isdigit():
+            return int(_branchcode) in _banklist
+
+        return _branchcode in _banklist
+
+    """
+    Fetches details for given code
+    :returns response from  razorpay api for ifsc
+    :raises ValueErro for invalid data
+    """
+
+    def fetch_details(self, code: str):
+        _final_URL = self.BASE_URL + code
+
+        if not self.validate(code):
+            raise ValueError(f'provided code is invalid')
+        headers = {
+            'Content-Type': 'application/json',
+        }
+        #https://nedbatchelder.com/blog/200711/rethrowing_exceptions_in_python.html ( gives a full stack trace for exception)
+        try:
+            response = requests.get(_final_URL, headers=headers)
+        except Exception as e:
+            import sys
+            raise sys.exc_info()[1]
+
+        return response.json()