send back 403 with validation errors

include/data.hpp

@@ -8,9 +8,9 @@ class data : public json {
   fs::path &get_data_path();
   void create_data_directory();
   fs::path get_store_path();
-  json validate(const json &);
 
 public:
   data();
   json process(const json &);
+  json validate(const json &);
 };

src/data.cpp

@@ -42,14 +42,7 @@ void data::create_data_directory() {
 
 fs::path data::get_store_path() { return get_data_path() / "store.json"; }
 
-json data::process(const json &input) {
-  const auto errors = validate(input);
-  if (errors.size() != 0) {
-    return errors;
-  }
-
-  return input;
-}
+json data::process(const json &input) { return input; }
 
 json data::validate(const json &input) {
   const std::string name = input.value("name", "");
@@ -60,16 +53,31 @@ json data::validate(const json &input) {
   const std::unordered_map<std::string, std::string> strings{
       {"name", name}, {"address", address}, {"phone", phone}, {"email", email}};
 
-  json errors = json::array();
+  json errors = json::object({
+      {"name", json::array()},
+      {"address", json::array()},
+      {"phone", json::array()},
+      {"email", json::array()},
+  });
+
+
+  int count = 0;
+
+  const auto add_error = [&](json &field, const std::string &str) {
+    count++;
+    field.push_back(str);
+  };
 
   for (const auto &f : strings) {
+    auto &field = errors[f.first];
+
     if (f.second.size() == 0) {
-      errors.push_back({{f.first, "Missing name."}});
+      add_error(field, "is missing from form.");
     }
     if (f.second.size() >= 255) {
-      errors.push_back({{f.first, "Name is to long."}});
+      add_error(field, "to long to process. 254+");
     }
   }
 
-  return errors;
+  return json{{"errors", errors}, {"count", count}};
 }

src/store.cpp

@@ -78,12 +78,14 @@ int Application::run() {
           return response::not_found(response);
         }
 
-        const auto json_response = dat.process(data);
-
-        if (json_response.is_array()) {
-          return response::bad_request(response, json_response);
+        const auto errors = dat.validate(data);
+        int error_count = errors["count"];
+        if (error_count != 0) {
+          return response::bad_request(response, errors["errors"]);
         }
 
+        const auto json_response = dat.process(data);
+
         response->write(Status::success_created, json_response.dump(),
                         {header_access_control, header_application_data});
       };