Implement encoding for path for special characters

CHANGELOG.md

@@ -1,5 +1,8 @@
 # Changelog
 
+### Unreleased
+* Fixed issue where special characters in URL paths (like #) were being treated as URL fragments. Added proper URL encoding for path components in HTTP requests
+
 ### 6.4.0 / 2025-04-30
 * Added support for Notetaker APIs
 * Added support for Notetaker via the calendar and event APIs

lib/nylas/handler/http_client.rb

@@ -231,6 +231,12 @@ def throw_error(response, status_code, headers = nil)
     # @param query [Hash] The query parameters to add to the URL.
     # @return [String] Processed URL, including query params.
     def build_url(url, query = nil)
+      if url
+        base_url, *path_parts = url.split("/")
+        encoded_path = [base_url, *path_parts.map { |part| URI.encode_www_form_component(part) }].join("/")
+        url = encoded_path
+      end
+
       unless query.nil? || query.empty?
         uri = URI.parse(url)
         uri = build_query(uri, query)

spec/nylas/handler/http_client_spec.rb

@@ -219,6 +219,21 @@ class TestHttpClient
 
       expect(final_uri.to_s).to eq("https://test.api.nylas.com/foo?foo=bar&list=a&list=b&list=c&map=key1%3Avalue1&map=key2%3Avalue2")
     end
+
+    it "properly encodes special characters in the path" do
+      uri = "https://test.api.nylas.com/v3/grants/p#weather@group.v.calendar.google.com/calendars"
+      final_uri = http_client.send(:build_url, uri)
+
+      expect(final_uri.to_s).to eq("https://test.api.nylas.com/v3/grants/p%23weather%40group.v.calendar.google.com/calendars")
+    end
+
+    it "properly encodes special characters in the path with query parameters" do
+      uri = "https://test.api.nylas.com/v3/grants/p#weather@group.v.calendar.google.com/calendars"
+      params = { foo: "bar" }
+      final_uri = http_client.send(:build_url, uri, params)
+
+      expect(final_uri.to_s).to eq("https://test.api.nylas.com/v3/grants/p%23weather%40group.v.calendar.google.com/calendars?foo=bar")
+    end
   end
 
   describe "#throw_error" do