feat: rebuild CSP practice workflow, UX and automation

backend/src/domain/json.cc

@@ -19,6 +19,10 @@ Json::Value ToJson(const Problem& p) {
   j["statement_md"] = p.statement_md;
   j["difficulty"] = p.difficulty;
   j["source"] = p.source;
+  j["statement_url"] = p.statement_url;
+  j["llm_profile_json"] = p.llm_profile_json;
+  j["sample_input"] = p.sample_input;
+  j["sample_output"] = p.sample_output;
   j["created_at"] = Json::Int64(p.created_at);
   return j;
 }
@@ -28,11 +32,18 @@ Json::Value ToJson(const Submission& s) {
   j["id"] = Json::Int64(s.id);
   j["user_id"] = Json::Int64(s.user_id);
   j["problem_id"] = Json::Int64(s.problem_id);
+  if (s.contest_id.has_value()) {
+    j["contest_id"] = Json::Int64(*s.contest_id);
+  } else {
+    j["contest_id"] = Json::nullValue;
+  }
   j["language"] = ToString(s.language);
   j["status"] = ToString(s.status);
   j["score"] = s.score;
   j["time_ms"] = s.time_ms;
   j["memory_kb"] = s.memory_kb;
+  j["compile_log"] = s.compile_log;
+  j["runtime_log"] = s.runtime_log;
   j["created_at"] = Json::Int64(s.created_at);
   return j;
 }
@@ -51,4 +62,42 @@ Json::Value ToJson(const WrongBookItem& w) {
   return j;
 }
 
+Json::Value ToJson(const Contest& c) {
+  Json::Value j;
+  j["id"] = Json::Int64(c.id);
+  j["title"] = c.title;
+  j["starts_at"] = Json::Int64(c.starts_at);
+  j["ends_at"] = Json::Int64(c.ends_at);
+  j["rule_json"] = c.rule_json;
+  return j;
+}
+
+Json::Value ToJson(const KbArticle& a) {
+  Json::Value j;
+  j["id"] = Json::Int64(a.id);
+  j["slug"] = a.slug;
+  j["title"] = a.title;
+  j["content_md"] = a.content_md;
+  j["created_at"] = Json::Int64(a.created_at);
+  return j;
+}
+
+Json::Value ToJson(const GlobalLeaderboardEntry& e) {
+  Json::Value j;
+  j["user_id"] = Json::Int64(e.user_id);
+  j["username"] = e.username;
+  j["rating"] = e.rating;
+  j["created_at"] = Json::Int64(e.created_at);
+  return j;
+}
+
+Json::Value ToJson(const ContestLeaderboardEntry& e) {
+  Json::Value j;
+  j["user_id"] = Json::Int64(e.user_id);
+  j["username"] = e.username;
+  j["solved"] = e.solved;
+  j["penalty_sec"] = Json::Int64(e.penalty_sec);
+  return j;
+}
+
 }  // namespace csp::domain