feat: apply_gst in batches

lms/lms/doctype/lms_settings/lms_settings.json

@@ -20,10 +20,13 @@
   "allow_student_progress",
   "payment_section",
   "razorpay_key",
-  "default_currency",
-  "column_break_cfcv",
   "razorpay_secret",
   "apply_gst",
+  "column_break_cfcv",
+  "default_currency",
+  "show_usd_equivalent",
+  "apply_rounding",
+  "exception_country",
   "signup_settings_tab",
   "signup_settings_section",
   "terms_of_use",
@@ -231,12 +234,31 @@
    "fieldname": "apply_gst",
    "fieldtype": "Check",
    "label": "Apply GST for India"
+  },
+  {
+   "default": "0",
+   "fieldname": "show_usd_equivalent",
+   "fieldtype": "Check",
+   "label": "Show USD Equivalent"
+  },
+  {
+   "depends_on": "show_usd_equivalent",
+   "fieldname": "exception_country",
+   "fieldtype": "Table MultiSelect",
+   "label": "Maintain Original Currency",
+   "options": "Payment Country"
+  },
+  {
+   "default": "0",
+   "fieldname": "apply_rounding",
+   "fieldtype": "Check",
+   "label": "Apply Rounding on Equivalent"
   }
  ],
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2023-08-29 09:54:48.030823",
+ "modified": "2023-09-11 21:56:39.996898",
  "modified_by": "Administrator",
  "module": "LMS",
  "name": "LMS Settings",

lms/lms/doctype/payment_country/payment_country.js

@@ -0,0 +1,8 @@
+// Copyright (c) 2023, Frappe and contributors
+// For license information, please see license.txt
+
+// frappe.ui.form.on("Payment Country", {
+// 	refresh(frm) {
+
+// 	},
+// });

lms/lms/doctype/payment_country/payment_country.json

@@ -0,0 +1,33 @@
+{
+ "actions": [],
+ "allow_rename": 1,
+ "creation": "2023-09-11 11:53:16.253740",
+ "default_view": "List",
+ "doctype": "DocType",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "country"
+ ],
+ "fields": [
+  {
+   "fieldname": "country",
+   "fieldtype": "Link",
+   "in_list_view": 1,
+   "label": "Country",
+   "options": "Country"
+  }
+ ],
+ "index_web_pages_for_search": 1,
+ "istable": 1,
+ "links": [],
+ "modified": "2023-09-11 12:04:56.048632",
+ "modified_by": "Administrator",
+ "module": "LMS",
+ "name": "Payment Country",
+ "owner": "Administrator",
+ "permissions": [],
+ "sort_field": "modified",
+ "sort_order": "DESC",
+ "states": []
+}

lms/lms/doctype/payment_country/payment_country.py

@@ -0,0 +1,9 @@
+# Copyright (c) 2023, Frappe and contributors
+# For license information, please see license.txt
+
+# import frappe
+from frappe.model.document import Document
+
+
+class PaymentCountry(Document):
+	pass

lms/lms/doctype/payment_country/test_payment_country.py

@@ -0,0 +1,9 @@
+# Copyright (c) 2023, Frappe and Contributors
+# See license.txt
+
+# import frappe
+from frappe.tests.utils import FrappeTestCase
+
+
+class TestPaymentCountry(FrappeTestCase):
+	pass

lms/lms/utils.py

@@ -3,6 +3,8 @@ import string
 import frappe
 import json
 import razorpay
+import requests
+import base64
 from frappe import _
 from frappe.desk.doctype.dashboard_chart.dashboard_chart import get_result
 from frappe.desk.doctype.notification_log.notification_log import make_notification_logs
@@ -830,19 +832,20 @@ def get_upcoming_evals(student, courses):
 
 
 @frappe.whitelist()
-def get_payment_options(doctype, docname, phone):
+def get_payment_options(doctype, docname, phone, country):
 	if not frappe.db.exists(doctype, docname):
 		frappe.throw(_("Invalid document provided."))
 
 	validate_phone_number(phone, True)
 	details = get_details(doctype, docname)
+	details.amount, details.currency = check_multicurrency(details)
+	details.amount, details.gst_applied = apply_gst(details, country)
 
-	razorpay_key = frappe.db.get_single_value("LMS Settings", "razorpay_key")
 	client = get_client()
 	order = create_order(client, details.amount, details.currency)
 
 	options = {
-		"key_id": razorpay_key,
+		"key_id": frappe.db.get_single_value("LMS Settings", "razorpay_key"),
 		"name": frappe.db.get_single_value("Website Settings", "app_name"),
 		"description": _("Payment for {0} course").format(details["title"]),
 		"order_id": order["id"],
@@ -857,6 +860,42 @@ def get_payment_options(doctype, docname, phone):
 	return options
 
 
+def check_multicurrency(amount, currency):
+	show_usd_equivalent = frappe.db.get_single_value("LMS Settings", "show_usd_equivalent")
+	exception_country = frappe.db.get_single_value("LMS Settings", "exception_country")
+	apply_rounding = frappe.db.get_single_value("LMS Settings", "apply_rounding")
+	country = frappe.db.get_value("User", frappe.session.user, "country")
+
+	if not show_usd_equivalent:
+		return
+
+	if currency == "USD":
+		return
+
+	if exception_country and country in exception_country:
+		return
+
+	exchange_rate = get_current_exchange_rate(currency, "USD")
+	amount = amount * exchange_rate
+	currency = "USD"
+
+	if apply_rounding and amount % 100 != 0:
+		amount = amount + 100 - amount % 100
+
+	return amount, currency
+
+
+def apply_gst(amount, country):
+	gst_applied = False
+	apply_gst = frappe.db.get_single_value("LMS Settings", "apply_gst")
+
+	if apply_gst and country == "India":
+		gst_applied = True
+		amount = amount * 1.18
+
+	return amount, gst_applied
+
+
 def get_details(doctype, docname):
 	if doctype == "LMS Course":
 		details = frappe.db.get_value(
@@ -896,8 +935,9 @@ def save_address(address):
 
 
 def get_client():
-	razorpay_key = frappe.db.get_single_value("LMS Settings", "razorpay_key")
-	razorpay_secret = frappe.db.get_single_value("LMS Settings", "razorpay_secret")
+	settings = frappe.get_single("LMS Settings")
+	razorpay_key = settings.razorpay_key
+	razorpay_secret = settings.get_password("razorpay_secret", raise_exception=True)
 
 	if not razorpay_key and not razorpay_secret:
 		frappe.throw(
@@ -946,7 +986,7 @@ def record_payment(address, response, client, doctype, docname):
 	address = frappe._dict(json.loads(address))
 	address_name = save_address(address)
 
-	payment_details = get_payment_details(doctype, docname)
+	payment_details = get_payment_details(doctype, docname, address)
 	payment_doc = frappe.new_doc("LMS Payment")
 	payment_doc.update(
 		{
@@ -966,10 +1006,13 @@ def record_payment(address, response, client, doctype, docname):
 	return payment_doc.name
 
 
-def get_payment_details(doctype, docname):
+def get_payment_details(doctype, docname, address):
 	amount_field = "course_price" if doctype == "LMS Course" else "amount"
 	amount = frappe.db.get_value(doctype, docname, amount_field)
 	currency = frappe.db.get_value(doctype, docname, "currency")
+	apply_gst = frappe.db.get_single_value("LMS Settings", "apply_gst")
+	if apply_gst and address.country == "India":
+		amount = amount * 1.18
 
 	return {
 		"amount": amount,
@@ -999,3 +1042,11 @@ def add_student_to_batch(batchname, payment):
 	)
 	student.save(ignore_permissions=True)
 	return f"/batches/{batchname}"
+
+
+def get_current_exchange_rate(source, target="USD"):
+	url = f"https://api.frankfurter.app/latest?from={source}&to={target}"
+
+	response = requests.request("GET", url)
+	details = response.json()
+	return details["rates"][target]

lms/www/billing/billing.html

@@ -30,7 +30,7 @@
     <div class="">
         <div class="flex mb-2">
             <div class="field-label">
-                {% set label = "Course Name" if module == "course" else "Batch Name" %}
+                {% set label = "Course" if module == "course" else "Batch" %}
                 {{ _(label) }} : {{ title }}
             </div>
         </div>
@@ -40,6 +40,11 @@
                 {{ _("Total Price: ") }} {{ frappe.utils.fmt_money(amount, 2, currency) }}
             </div>
         </div>
+        {% if gst_applied %}
+        <span class="small mt-2">
+            {{ _("18% GST included") }}
+        </span>
+        {% endif %}
     </div>
 </div>
 {% endmacro %}

lms/www/billing/billing.js

@@ -104,6 +104,7 @@ const generate_payment_link = (e) => {
 			doctype: doctype,
 			docname: docname,
 			phone: address.phone,
+			country: address.country,
 		},
 		callback: (data) => {
 			data.message.handler = (response) => {

lms/www/billing/billing.py

@@ -1,23 +1,30 @@
 import frappe
 from frappe import _
+from lms.lms.utils import check_multicurrency, apply_gst
 
 
 def get_context(context):
 	module = frappe.form_dict.module
 	docname = frappe.form_dict.modulename
+	doctype = "LMS Course" if module == "course" else "LMS Batch"
 
+	context.module = module
+	context.docname = docname
+	context.doctype = doctype
+
+	validate_access(doctype, docname, module)
+	get_billing_details(context)
+	check_multicurrency(context)
+	apply_gst(context)
+
+
+def validate_access(doctype, docname, module):
 	if frappe.session.user == "Guest":
 		raise frappe.PermissionError(_("You are not allowed to access this page."))
 
 	if module not in ["course", "batch"]:
 		raise ValueError(_("Module is incorrect."))
 
-	doctype = "LMS Course" if module == "course" else "LMS Batch"
-	context.module = module
-	context.docname = docname
-	context.doctype = doctype
-	context.apply_gst = frappe.db.get_single_value("LMS Settings", "apply_gst")
-
 	if not frappe.db.exists(doctype, docname):
 		raise ValueError(_("Module Name is incorrect or does not exist."))
 
@@ -35,37 +42,32 @@ def get_context(context):
 		if membership:
 			raise frappe.PermissionError(_("You are already enrolled for this batch."))
 
-	if doctype == "LMS Course":
-		course = frappe.db.get_value(
+
+def get_billing_details(context):
+	if context.doctype == "LMS Course":
+		details = frappe.db.get_value(
 			"LMS Course",
-			docname,
-			["title", "name", "paid_course", "course_price", "currency"],
+			context.docname,
+			["title", "name", "paid_course", "course_price as amount", "currency"],
 			as_dict=True,
 		)
 
-		if not course.paid_course:
+		if not details.paid_course:
 			raise frappe.PermissionError(_("This course is free."))
 
-		context.title = course.title
-		context.amount = course.course_price
-		context.currency = course.currency
-
 	else:
-		batch = frappe.db.get_value(
+		details = frappe.db.get_value(
 			"LMS Batch",
-			docname,
+			context.docname,
 			["title", "name", "paid_batch", "amount", "currency"],
 			as_dict=True,
 		)
 
-		if not batch.paid_batch:
+		if not details.paid_batch:
 			raise frappe.PermissionError(
 				_("To join this batch, please contact the Administrator.")
 			)
 
-		context.title = batch.title
-		context.amount = batch.amount
-		context.currency = batch.currency
-
-	if context.apply_gst:
-		context.gst_amount = context.amount * 1.18
+	context.title = details.title
+	context.amount = details.amount
+	context.currency = details.currency