feat: re-linking bank accounts with plaid (#23913)

erpnext/erpnext_integrations/doctype/plaid_settings/plaid_connector.py

@@ -29,21 +29,32 @@ class PlaidConnector():
 		response = self.client.Item.public_token.exchange(public_token)
 		access_token = response["access_token"]
 		return access_token
-
-	def get_link_token(self):
-		token_request = {
+	
+	def get_token_request(self, update_mode=False):
+		args = {
 			"client_name": self.client_name,
-			"client_id": self.settings.plaid_client_id,
-			"secret": self.settings.plaid_secret,
-			"products": self.products,
 			# only allow Plaid-supported languages and countries (LAST: Sep-19-2020)
 			"language": frappe.local.lang if frappe.local.lang in ["en", "fr", "es", "nl"] else "en",
-			"country_codes": ["US", "CA", "FR", "IE", "NL", "ES", "GB"],
+			"country_codes": ["US", "CA", "ES", "FR", "GB", "IE", "NL"],
 			"user": {
 				"client_user_id": frappe.generate_hash(frappe.session.user, length=32)
 			}
 		}
 
+		if update_mode:
+			args["access_token"] = self.access_token
+		else:
+			args.update({
+				"client_id": self.settings.plaid_client_id,
+				"secret": self.settings.plaid_secret,
+				"products": self.products,
+			})
+		
+		return args
+
+	def get_link_token(self, update_mode=False):
+		token_request = self.get_token_request(update_mode)
+
 		try:
 			response = self.client.LinkToken.create(token_request)
 		except InvalidRequestError:

erpnext/erpnext_integrations/doctype/plaid_settings/plaid_settings.js

@@ -12,7 +12,7 @@ frappe.ui.form.on('Plaid Settings', {
 
 	refresh: function (frm) {
 		if (frm.doc.enabled) {
-			frm.add_custom_button('Link a new bank account', () => {
+			frm.add_custom_button(__('Link a new bank account'), () => {
 				new erpnext.integrations.plaidLink(frm);
 			});
 		}
@@ -30,10 +30,18 @@ erpnext.integrations.plaidLink = class plaidLink {
 		this.product = ["auth", "transactions"];
 		this.plaid_env = this.frm.doc.plaid_env;
 		this.client_name = frappe.boot.sitename;
-		this.token = await this.frm.call("get_link_token").then(resp => resp.message);
+		this.token = await this.get_link_token();
 		this.init_plaid();
 	}
 
+	async get_link_token() {
+		const token = await this.frm.call("get_link_token").then(resp => resp.message);
+		if (!token) {
+			frappe.throw(__('Cannot retrieve link token. Check Error Log for more information'));
+		}
+		return token;
+	}
+
 	init_plaid() {
 		const me = this;
 		me.loadScript(me.plaidUrl)
@@ -78,8 +86,8 @@ erpnext.integrations.plaidLink = class plaidLink {
 	}
 
 	onScriptError(error) {
-		frappe.msgprint("There was an issue connecting to Plaid's authentication server");
-		frappe.msgprint(error);
+		frappe.msgprint(__("There was an issue connecting to Plaid's authentication server. Check browser console for more information"));
+		console.log(error);
 	}
 
 	plaid_success(token, response) {
@@ -107,4 +115,4 @@ erpnext.integrations.plaidLink = class plaidLink {
 			});
 		}, __("Select a company"), __("Continue"));
 	}
-};
+};

erpnext/erpnext_integrations/doctype/plaid_settings/plaid_settings.py

@@ -239,3 +239,8 @@ def automatic_synchronization():
 				bank=plaid_account.bank,
 				bank_account=plaid_account.name
 			)
+
+@frappe.whitelist()
+def get_link_token_for_update(access_token):
+	plaid = PlaidConnector(access_token)
+	return plaid.get_link_token(update_mode=True)