feat: handler for timers

1 files changed, 70 insertions, 0 deletions

diff --git a/src/timer.cpp b/src/timer.cpp
new file mode 100644
index 0000000..ccdf176
--- /dev/null
+++ b/src/timer.cpp
@@ -0,0 +1,70 @@
+#include "timer.hpp"
+
+#include <chrono>
+#include <pqxx/pqxx>
+#include <string>
+#include <thread>
+
+#include "config.hpp"
+#include "irc/client.hpp"
+#include "utils/chrono.hpp"
+
+namespace bot {
+  void create_timer_thread(irc::Client *irc_client,
+                           Configuration *configuration) {
+    while (true) {
+      pqxx::connection conn(GET_DATABASE_CONNECTION_URL_POINTER(configuration));
+      pqxx::work *work = new pqxx::work(conn);
+
+      pqxx::result timers = work->exec(
+          "SELECT id, interval_sec, message, channel_id, last_executed_at FROM "
+          "timers");
+
+      for (const auto &timer : timers) {
+        int id = timer[0].as<int>();
+        int interval_sec = timer[1].as<int>();
+        std::string message = timer[2].as<std::string>();
+        int channel_id = timer[3].as<int>();
+
+        // it could be done in sql query
+        std::chrono::system_clock::time_point last_executed_at =
+            utils::chrono::string_to_time_point(timer[4].as<std::string>());
+        auto now = std::chrono::system_clock::now();
+        auto now_time_it = std::chrono::system_clock::to_time_t(now);
+        auto now_tm = std::gmtime(&now_time_it);
+        now = std::chrono::system_clock::from_time_t(std::mktime(now_tm));
+
+        auto difference = std::chrono::duration_cast<std::chrono::seconds>(
+            now - last_executed_at);
+
+        if (difference.count() > interval_sec) {
+          pqxx::result channels =
+              work->exec("SELECT alias_name FROM channels WHERE id = " +
+                         std::to_string(channel_id));
+
+          if (!channels.empty()) {
+            std::string alias_name = channels[0][0].as<std::string>();
+
+            irc_client->say(alias_name, message);
+          }
+
+          work->exec(
+              "UPDATE timers SET last_executed_at = timezone('utc', now()) "
+              "WHERE "
+              "id = " +
+              std::to_string(id));
+
+          work->commit();
+
+          delete work;
+          work = new pqxx::work(conn);
+        }
+      }
+
+      delete work;
+      conn.close();
+
+      std::this_thread::sleep_for(std::chrono::seconds(1));
+    }
+  }
+}