Pipeline: Add LLM and mocked user generation to the pipeline (#230)

tooling/pipeline/src/data_generation/mock/generate_user.cc

@@ -1,22 +1,31 @@
 /**
  * @file data_generation/mock/generate_user.cc
- * @brief Generates deterministic mock user profiles by hashing locale values
- * into predefined username and bio collections.
+ * @brief Generates deterministic mock user profiles by hashing city, persona,
+ * and sampled name into predefined username and bio collections.
  */
 
-#include <functional>
-#include <string>
 #include <string_view>
 
 #include "data_generation/mock_generator.h"
 
-UserResult MockGenerator::GenerateUser(const std::string& locale) {
-  const size_t hash = std::hash<std::string>{}(locale);
+UserResult MockGenerator::GenerateUser(const EnrichedCity& city,
+                                       const UserPersona& persona,
+                                       const Name& name) {
+  const size_t hash = DeterministicHash(city.location, persona, name);
 
-  UserResult result;
   const std::string_view username = kUsernames[hash % kUsernames.size()];
   const std::string_view bio = kBios[hash / kBioHashStride % kBios.size()];
-  result.username = username;
-  result.bio = bio;
-  return result;
+  const float activity_weight =
+      static_cast<float>(hash / kActivityWeightHashStride %
+                         kActivityWeightHashRange) /
+      static_cast<float>(kActivityWeightHashRange);
+
+  return {
+      .first_name = name.first_name,
+      .last_name = name.last_name,
+      .gender = name.gender,
+      .username = std::string(username),
+      .bio = std::string(bio),
+      .activity_weight = activity_weight,
+  };
 }