stabilized app

src/stockagemanager.h

@@ -0,0 +1,59 @@
+#pragma once
+
+#include "worker.h"
+#include <thread>
+#include <atomic>
+
+class StockageManager : public Worker {
+public:
+    explicit StockageManager(ConnectionPool &pool, MessageBroker &broker);
+    ~StockageManager() override;
+
+protected:
+    void run() override;
+
+private:
+    void addLocalStocks();
+    std::vector<int> getTownIds();
+    void addStockForTown(int townId);
+
+    std::atomic<bool> addStocksRunning{true};
+    std::thread addStocksThread;
+
+    static constexpr const char *QUERY_GET_TOWNS = R"(
+        SELECT fdr.id
+        from falukant_data.region fdr
+        join falukant_type.region ftr
+          on ftr.id = fdr.region_type_id
+        where ftr.label_tr = 'city'
+    )";
+
+    static constexpr const char *QUERY_INSERT_STOCK = R"(
+        INSERT INTO falukant_data.buyable_stock (region_id, stock_type_id, quantity)
+        SELECT
+            $1 AS region_id,
+            s.id      AS stock_type_id,
+            GREATEST(1, ROUND(RANDOM() * 5 * COUNT(br.id))) AS quantity
+        FROM
+            falukant_data.branch        AS br
+          CROSS JOIN
+            falukant_type.stock         AS s
+        WHERE
+            br.region_id = $1
+        GROUP BY
+            s.id
+        ORDER BY
+            RANDOM()
+        LIMIT
+            GREATEST(
+              ROUND(RANDOM() * (SELECT COUNT(id) FROM falukant_type.stock)),
+              1
+            );
+    )";
+
+    static constexpr const char *QUERY_CLEANUP_STOCK = R"(
+        delete from falukant_data.buyable_stock
+        where quantity <= 0
+    )";
+    void cleanupBuyableSotck();
+};