feat: add daily tasks and fix /admin139 admin entry

backend/include/csp/controllers/me_controller.h

@@ -10,6 +10,10 @@ class MeController : public drogon::HttpController<MeController> {
  public:
   METHOD_LIST_BEGIN
   ADD_METHOD_TO(MeController::profile, "/api/v1/me", drogon::Get);
+  ADD_METHOD_TO(MeController::listRedeemItems, "/api/v1/me/redeem/items", drogon::Get);
+  ADD_METHOD_TO(MeController::listRedeemRecords, "/api/v1/me/redeem/records", drogon::Get);
+  ADD_METHOD_TO(MeController::createRedeemRecord, "/api/v1/me/redeem/records", drogon::Post);
+  ADD_METHOD_TO(MeController::listDailyTasks, "/api/v1/me/daily-tasks", drogon::Get);
   ADD_METHOD_TO(MeController::listWrongBook, "/api/v1/me/wrong-book", drogon::Get);
   ADD_METHOD_TO(MeController::upsertWrongBookNote, "/api/v1/me/wrong-book/{1}", drogon::Patch);
   ADD_METHOD_TO(MeController::deleteWrongBookItem, "/api/v1/me/wrong-book/{1}", drogon::Delete);
@@ -18,6 +22,18 @@ class MeController : public drogon::HttpController<MeController> {
   void profile(const drogon::HttpRequestPtr& req,
                std::function<void(const drogon::HttpResponsePtr&)>&& cb);
 
+  void listRedeemItems(const drogon::HttpRequestPtr& req,
+                       std::function<void(const drogon::HttpResponsePtr&)>&& cb);
+
+  void listRedeemRecords(const drogon::HttpRequestPtr& req,
+                         std::function<void(const drogon::HttpResponsePtr&)>&& cb);
+
+  void createRedeemRecord(const drogon::HttpRequestPtr& req,
+                          std::function<void(const drogon::HttpResponsePtr&)>&& cb);
+
+  void listDailyTasks(const drogon::HttpRequestPtr& req,
+                      std::function<void(const drogon::HttpResponsePtr&)>&& cb);
+
   void listWrongBook(const drogon::HttpRequestPtr& req,
                      std::function<void(const drogon::HttpResponsePtr&)>&& cb);
 

backend/include/csp/services/daily_task_service.h

@@ -0,0 +1,40 @@
+#pragma once
+
+#include "csp/db/sqlite_db.h"
+
+#include <cstdint>
+#include <string>
+#include <vector>
+
+namespace csp::services {
+
+struct DailyTaskItem {
+  std::string code;
+  std::string title;
+  std::string description;
+  int reward = 1;
+  bool completed = false;
+  int64_t completed_at = 0;
+};
+
+class DailyTaskService {
+ public:
+  static constexpr const char* kTaskLoginCheckin = "login_checkin";
+  static constexpr const char* kTaskDailySubmit = "daily_submit";
+  static constexpr const char* kTaskFirstAc = "first_ac";
+  static constexpr const char* kTaskCodeQuality = "code_quality";
+
+  explicit DailyTaskService(db::SqliteDb& db) : db_(db) {}
+
+  std::string CurrentDayKey() const;
+  std::vector<DailyTaskItem> ListTodayTasks(int64_t user_id) const;
+
+  // Returns true when the task is completed for the first time today
+  // (and reward is granted), false when already completed.
+  bool CompleteTaskIfFirstToday(int64_t user_id, const std::string& task_code);
+
+ private:
+  db::SqliteDb& db_;
+};
+
+}  // namespace csp::services