feat: fetch api details from settings

erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.json

@@ -55,15 +55,16 @@
   },
   {
    "fieldname": "result_key",
-   "fieldtype": "Data",
+   "fieldtype": "Table",
    "label": "Result Key",
+   "options": "Currency Exchange Settings Result",
    "reqd": 1
   }
  ],
  "index_web_pages_for_search": 1,
  "issingle": 1,
  "links": [],
- "modified": "2021-09-02 15:18:29.198210",
+ "modified": "2021-09-03 13:21:16.397695",
  "modified_by": "Administrator",
  "module": "Setup",
  "name": "Currency Exchange Settings",

erpnext/setup/doctype/currency_exchange_settings/currency_exchange_settings.py

@@ -9,10 +9,13 @@ class CurrencyExchangeSettings(Document):
 	def validate(self):
 		if len(self.req_params) != 3:
 			frappe.throw(_("Make sure all the three mandatory parameters are filled."))
-		req_params = {
-			'transaction_date': '2021-08-01',
-			'from_currency': 'USD',
-			'to_currency': 'INR'
+		transaction_date = '2021-08-01'
+		from_currency = 'USD'
+		to_currency = 'INR'
+		req_params={
+			"transaction_date": transaction_date,
+			"from_currency": from_currency,
+			"to_currency": to_currency
 		}
 		params = {}
 		for row in self.req_params:
@@ -21,8 +24,14 @@ class CurrencyExchangeSettings(Document):
 				req_params.pop(row.value)
 			except:
 				frappe.throw(_("Make sure all the three mandatory parameters are filled."))
+		for eparam in self.extra_params:
+			params[eparam.key] = eparam.value
 		import requests
-		api_url = self.api_endpoint
+		api_url = self.api_endpoint.format(
+			transaction_date=transaction_date,
+			to_currency=to_currency,
+			from_currency=from_currency
+		)
 		try:
 			response = requests.get(api_url, params=params)
 		except requests.exceptions.RequestException as e:
@@ -30,9 +39,14 @@ class CurrencyExchangeSettings(Document):
 		response.raise_for_status()
 		value = response.json()
 		try:
-			rate = value[str(self.result_key)]
+			for key in self.result_key:
+				value = value[str(key.key).format(
+					transaction_date=transaction_date,
+					to_currency=to_currency, 
+					from_currency=from_currency
+				)]
 		except KeyError:
-			frappe.throw(_("Invalid result key."))
-		if not isinstance(rate, (int, float)):
+			frappe.throw(_("Invalid result key. Response: ") + response.text)
+		if not isinstance(value, (int, float)):
 			frappe.throw(_("Returned exchange rate is neither integer not float."))
-		frappe.msgprint(_("Exchange rate of USD to INR on 01-08-2021 is ") + str(rate))
+		frappe.msgprint(_("Exchange rate of USD to INR on 01-08-2021 is ") + str(value))

erpnext/setup/doctype/currency_exchange_settings_result/currency_exchange_settings_result.json

@@ -0,0 +1,31 @@
+{
+ "actions": [],
+ "creation": "2021-09-03 13:17:22.088259",
+ "doctype": "DocType",
+ "editable_grid": 1,
+ "engine": "InnoDB",
+ "field_order": [
+  "key"
+ ],
+ "fields": [
+  {
+   "fieldname": "key",
+   "fieldtype": "Data",
+   "in_list_view": 1,
+   "label": "Key",
+   "reqd": 1
+  }
+ ],
+ "index_web_pages_for_search": 1,
+ "istable": 1,
+ "links": [],
+ "modified": "2021-09-03 13:17:22.088259",
+ "modified_by": "Administrator",
+ "module": "Setup",
+ "name": "Currency Exchange Settings Result",
+ "owner": "Administrator",
+ "permissions": [],
+ "sort_field": "modified",
+ "sort_order": "DESC",
+ "track_changes": 1
+}

erpnext/setup/doctype/currency_exchange_settings_result/currency_exchange_settings_result.py

@@ -0,0 +1,8 @@
+# Copyright (c) 2021, Frappe Technologies Pvt. Ltd. and contributors
+# For license information, please see license.txt
+
+# import frappe
+from frappe.model.document import Document
+
+class CurrencyExchangeSettingsResult(Document):
+	pass

erpnext/setup/utils.py

@@ -98,15 +98,31 @@ def get_exchange_rate(from_currency, to_currency, transaction_date=None, args=No
 
 		if not value:
 			import requests
-			api_url = "https://api.exchangerate.host/convert"
-			response = requests.get(api_url, params={
-				"date": transaction_date,
-				"from": from_currency,
-				"to": to_currency
-			})
+			settings = frappe.get_single('Currency Exchange Settings')
+			req_params={
+				"transaction_date": transaction_date,
+				"from_currency": from_currency,
+				"to_currency": to_currency
+			}
+			params = {}
+			for row in settings.req_params:
+				params[row.key] = req_params[row.value]
+			for eparam in settings.extra_params:
+				params[eparam.key] = eparam.value
+			response = requests.get(settings.api_endpoint.format(
+				transaction_date=transaction_date,
+				to_currency=to_currency,
+				from_currency=from_currency
+			), params=params)
 			# expire in 6 hours
 			response.raise_for_status()
-			value = response.json()["result"]
+			value = response.json()
+			for res_key in settings.result_key:
+				value = value[str(res_key.key).format(
+					transaction_date=transaction_date,
+					to_currency=to_currency,
+					from_currency=from_currency
+				)]
 			cache.setex(name=key, time=21600, value=flt(value))
 		return flt(value)
 	except Exception: