refactor: multiple service providers for Currency Exchange rates

erpnext/accounts/doctype/accounts_settings/accounts_settings.js

@@ -4,6 +4,12 @@
 frappe.ui.form.on('Accounts Settings', {
 	refresh: function(frm) {
 
+	},
+	validate_access_key(frm) {
+		frappe.call({
+			doc: frm.doc,
+			method: "validate_access_key"
+		});
 	}
 });
 

erpnext/accounts/doctype/accounts_settings/accounts_settings.json

@@ -46,6 +46,10 @@
   "currency_exchange_section",
   "allow_stale",
   "stale_days",
+  "service_provider",
+  "column_break_eiyok",
+  "access_key",
+  "validate_access_key",
   "report_settings_sb",
   "use_custom_cash_flow"
  ],
@@ -282,32 +286,56 @@
    "label": "Enable Common Party Accounting"
   },
   {
-    "default": "0",
-    "description": "Enabling this will allow creation of multi-currency invoices against single party account in company currency",
-    "fieldname": "allow_multi_currency_invoices_against_single_party_account",
-    "fieldtype": "Check",
-    "label": "Allow multi-currency invoices against single party account"
-   },
-   {
-    "default": "0",
-    "description": "Split Early Payment Discount Loss into Income and Tax Loss",
-    "fieldname": "book_tax_discount_loss",
-    "fieldtype": "Check",
-    "label": "Book Tax Loss on Early Payment Discount"
-   },
-   {
-    "default": "0",
-    "fieldname": "show_taxes_as_table_in_print",
-    "fieldtype": "Check",
-    "label": "Show Taxes as Table in Print"
-   }
+   "default": "0",
+   "description": "Enabling this will allow creation of multi-currency invoices against single party account in company currency",
+   "fieldname": "allow_multi_currency_invoices_against_single_party_account",
+   "fieldtype": "Check",
+   "label": "Allow multi-currency invoices against single party account"
+  },
+  {
+   "default": "0",
+   "description": "Split Early Payment Discount Loss into Income and Tax Loss",
+   "fieldname": "book_tax_discount_loss",
+   "fieldtype": "Check",
+   "label": "Book Tax Loss on Early Payment Discount"
+  },
+  {
+   "default": "0",
+   "fieldname": "show_taxes_as_table_in_print",
+   "fieldtype": "Check",
+   "label": "Show Taxes as Table in Print"
+  },
+  {
+   "default": "frankfurter.app",
+   "fieldname": "service_provider",
+   "fieldtype": "Select",
+   "label": "Service Provider",
+   "options": "frankfurter.app\nexchangerate.host"
+  },
+  {
+   "depends_on": "eval:doc.service_provider == \"exchangerate.host\"",
+   "description": "Access Key is mandatory for exchangerate.host",
+   "fieldname": "access_key",
+   "fieldtype": "Data",
+   "label": "Access Key"
+  },
+  {
+   "depends_on": "eval:doc.service_provider == \"exchangerate.host\"",
+   "fieldname": "validate_access_key",
+   "fieldtype": "Button",
+   "label": "Validate Access Key"
+  },
+  {
+   "fieldname": "column_break_eiyok",
+   "fieldtype": "Column Break"
+  }
  ],
  "icon": "icon-cog",
  "idx": 1,
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2023-06-13 18:47:46.430291",
+ "modified": "2023-10-07 14:20:01.779208",
  "modified_by": "Administrator",
  "module": "Accounts",
  "name": "Accounts Settings",

erpnext/accounts/doctype/accounts_settings/accounts_settings.py

@@ -8,12 +8,43 @@
 from frappe import _
 from frappe.custom.doctype.property_setter.property_setter import make_property_setter
 from frappe.model.document import Document
-from frappe.utils import cint
+from frappe.utils import cint, nowdate
 
 from erpnext.stock.utils import check_pending_reposting
 
 
 class AccountsSettings(Document):
+	@frappe.whitelist()
+	def validate_access_key(self):
+		if self.service_provider == "exchangerate.host":
+			if not self.access_key:
+				frappe.throw(_("Access Key is required for exchangerate.host"))
+			else:
+				import requests
+
+				# Validate access key
+				api_url = "https://api.exchangerate.host/convert"
+				response = requests.get(
+					api_url,
+					params={
+						"access_key": self.access_key,
+						"transaction_date": nowdate(),
+						"amount": 1,
+						"from": "USD",
+						"to": "INR",
+					},
+				)
+				# exchangerate.host return 200 for all requests. Can't rely on it to raise exception
+				if not response.json()["success"]:
+					frappe.throw(
+						title=_("Service Provider Error"),
+						msg=_("Currency exchange rate serivce provider: {0} returned Error. {1}").format(
+							frappe.bold(self.service_provider), response.json()
+						),
+						exc=frappe.ValidationError,
+					)
+				frappe.msgprint(msg=_("Success"), title=_("Access Key Validation"))
+
 	def on_update(self):
 		frappe.clear_cache()
 

erpnext/setup/utils.py

@@ -113,12 +113,30 @@ def get_exchange_rate(from_currency, to_currency, transaction_date=None, args=No
 		if not value:
 			import requests
 
-			api_url = f"https://api.frankfurter.app/{transaction_date}"
-			response = requests.get(api_url, params={"from": from_currency, "to": to_currency})
+			if currency_settings.service_provider == "exchangerate.host":
+				api_url = "https://api.exchangerate.host/convert"
+				response = requests.get(
+					api_url,
+					params={
+						"access_key": currency_settings.access_key,
+						"transaction_date": transaction_date,
+						"amount": 1,
+						"from": from_currency,
+						"to": to_currency,
+					},
+				)
+				# exchangerate.host return 200 for all requests. Can't rely on it to raise exception
+				value = response.json()["result"]
+				if not response.json()["success"]:
+					raise frappe.ValidationError
+
+			else:
+				api_url = f"https://api.frankfurter.app/{transaction_date}"
+				response = requests.get(api_url, params={"from": from_currency, "to": to_currency})
+				value = response.json()["rates"][to_currency]
 
 			# expire in 6 hours
 			response.raise_for_status()
-			value = response.json()["rates"][to_currency]
 			cache.setex(name=key, time=21600, value=flt(value))
 		return flt(value)
 	except Exception: