fix: coupon code application on billing page
This commit is contained in:
Jannat Patel
143
lms/lms/utils.py
143
lms/lms/utils.py
@@ -953,73 +953,6 @@ def get_current_exchange_rate(source, target="USD"):
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return details["rates"][target]
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@frappe.whitelist()
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def apply_coupon(doctype, docname, code, country=None):
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if doctype not in ["LMS Course", "LMS Batch"]:
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frappe.throw(_("Invalid doctype for coupon application."))
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if not code:
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frappe.throw(_("Coupon code is required."))
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summary = get_order_summary(doctype, docname, country)
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base_amount = summary.original_amount
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currency = summary.currency
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coupon_name = frappe.db.get_value("LMS Coupon", {"code": code.strip().upper(), "active": 1}, "name")
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if not coupon_name:
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frappe.throw(_("Invalid or inactive coupon code."))
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coupon = frappe.get_doc("LMS Coupon", coupon_name)
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if coupon.expires_on and getdate(coupon.expires_on) < getdate():
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frappe.throw(_("This coupon has expired."))
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if coupon.usage_limit and cint(coupon.times_redeemed) >= cint(coupon.usage_limit):
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frappe.throw(_("This coupon has reached its usage limit."))
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# check applicability
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applicable = True
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if len(coupon.applicable_items):
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applicable = any(
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(row.reference_doctype == doctype and row.reference_name == docname)
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for row in coupon.applicable_items
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)
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if not applicable:
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frappe.throw(_("This coupon is not applicable to this item."))
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discount_amount = 0
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if coupon.discount_type == "Percent":
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discount_amount = cint(flt(base_amount) * flt(coupon.percent_off) / 100)
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else:
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discount_amount = min(flt(coupon.amount_off), flt(base_amount))
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subtotal = max(flt(base_amount) - flt(discount_amount), 0)
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gst_applied = 0
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final_amount = subtotal
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if currency == "INR":
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final_amount, gst_applied = apply_gst(subtotal, country)
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return {
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"title": summary.title,
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"name": summary.name,
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"currency": currency,
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"original_amount": base_amount,
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"original_amount_formatted": fmt_money(base_amount, 0, currency),
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"discount_amount": discount_amount,
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"discount_amount_formatted": fmt_money(discount_amount, 0, currency),
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"amount": final_amount,
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"gst_applied": gst_applied,
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"gst_amount_formatted": fmt_money(gst_applied, 0, currency) if gst_applied else None,
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"total_amount_formatted": fmt_money(final_amount, 0, currency),
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"coupon": coupon.name,
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"coupon_code": coupon.code,
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"discount_type": coupon.discount_type,
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"discount_percent": coupon.percent_off if coupon.discount_type == "Percent" else None,
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}
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@frappe.whitelist()
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def change_currency(amount, currency, country=None):
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amount = cint(amount)
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@@ -1819,7 +1752,7 @@ def get_discussion_replies(topic):
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@frappe.whitelist()
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def get_order_summary(doctype, docname, country=None):
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def get_order_summary(doctype, docname, coupon=None, country=None):
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if doctype == "LMS Course":
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details = frappe.db.get_value(
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"LMS Course",
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@@ -1856,6 +1789,12 @@ def get_order_summary(doctype, docname, country=None):
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details.original_amount = details.amount
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details.original_amount_formatted = fmt_money(details.amount, 0, details.currency)
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if coupon:
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discount_amount, subtotal = apply_coupon(doctype, docname, coupon, details.amount)
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details.amount = subtotal
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details.discount_amount = discount_amount
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details.discount_amount_formatted = fmt_money(discount_amount, 0, details.currency)
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if details.currency == "INR":
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details.amount, details.gst_applied = apply_gst(details.amount, country)
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details.gst_amount_formatted = fmt_money(details.gst_applied, 0, details.currency)
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@@ -1864,6 +1803,74 @@ def get_order_summary(doctype, docname, country=None):
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return details
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def apply_coupon(doctype, docname, code, base_amount):
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coupon_name = frappe.db.exists("LMS Coupon", {"code": code, "enabled": 1})
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if not coupon_name:
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frappe.throw(_("Invalid or inactive coupon code."))
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coupon = frappe.db.get_value(
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"LMS Coupon",
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coupon_name,
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[
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"expires_on",
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"usage_limit",
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"redemption_count",
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"discount_type",
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"percentage_discount",
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"fixed_amount_discount",
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"name",
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"code",
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],
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as_dict=True,
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)
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validate_coupon(doctype, code, coupon)
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validate_coupon_applicability(doctype, docname, coupon_name)
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discount_amount = calculate_discount_amount(base_amount, coupon)
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subtotal = max(flt(base_amount) - flt(discount_amount), 0)
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return discount_amount, subtotal
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def validate_coupon(doctype, code, coupon):
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if doctype not in ["LMS Course", "LMS Batch"]:
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frappe.throw(_("Invalid doctype for coupon application."))
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if not code:
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frappe.throw(_("Coupon code is required."))
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if coupon.expires_on and getdate(coupon.expires_on) < getdate():
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frappe.throw(_("This coupon has expired."))
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if coupon.usage_limit and cint(coupon.redemption_count) >= cint(coupon.usage_limit):
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frappe.throw(_("This coupon has reached its maximum usage limit."))
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def validate_coupon_applicability(doctype, docname, coupon_name):
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applicable_item = frappe.db.exists(
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"LMS Coupon Item", {"parent": coupon_name, "reference_doctype": doctype, "reference_name": docname}
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)
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if not applicable_item:
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frappe.throw(
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_("This coupon is not applicable to this {0}.").format(
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"Course" if doctype == "LMS Course" else "Batch"
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)
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)
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def calculate_discount_amount(base_amount, coupon):
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discount_amount = 0
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if coupon.discount_type == "Percentage":
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discount_amount = (base_amount * coupon.percentage_discount) / 100
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elif coupon.discount_type == "Fixed Amount":
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discount_amount = base_amount - coupon.fixed_amount_discount
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return discount_amount
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@frappe.whitelist()
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def get_lesson_creation_details(course, chapter, lesson):
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chapter_name = frappe.db.get_value("Chapter Reference", {"parent": course, "idx": chapter}, "chapter")
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