Add enhanced debugging for missing endpoints

src/launchpad.cpp

@@ -220,7 +220,16 @@ std::string launchpad::build_full_url(const std::string& endpoint) const {
 
 std::optional<std::string> launchpad::api_get(const std::string& endpoint, const std::map<std::string, std::string>& params) const {
     std::string url = build_full_url(endpoint);
-    if (url.empty()) { return std::nullopt; }
+    if (url.empty()) {
+        std::cerr << "Internal error: please include the following info in a bug report:" << std::endl;
+        if (!params.empty()) {
+            for (const auto& [key, value] : params) {
+                std::cerr << url_encode(key) + "=" + url_encode(value) + "&";
+            }
+            std::cerr << std::endl;
+        }
+        return std::nullopt;
+    }
     if (!params.empty()) {
         url += "?";
         for (const auto& [key, value] : params) {
@@ -292,8 +301,17 @@ std::optional<std::string> launchpad::api_post(
     bool build_endpoint,
     const std::string& token_secret_override
 ) {
+    if (endpoint.empty()) {
+        std::cerr << "Internal error: please include the following info in a bug report:" << std::endl;
+        if (!params.empty()) {
+            for (const auto& [key, value] : params) {
+                std::cerr << url_encode(key) + "=" + url_encode(value) + "&";
+            }
+            std::cerr << std::endl;
+        }
+        return std::nullopt;
+    }
     std::string url = build_endpoint ? build_full_url(endpoint) : endpoint;
-    if (url.empty()) { return std::nullopt; }
 
     CURL* curl = curl_easy_init();
     if (!curl) {