Rewrite electricity-logger to use an sqlite3 database

src/electricity-logger/database.cpp

@@ -0,0 +1,60 @@
+#include <electricity/logger/database.hpp>
+#include <exception>
+#include <iomanip>
+#include <spdlog/spdlog.h>
+#include <sstream>
+#include <util/date.hpp>
+
+sqlite3 * OpenDatabase(std::string const & databaseFilePath)
+{
+    sqlite3 * connectionPtr;
+    if(sqlite3_open(databaseFilePath.c_str(), &connectionPtr) != SQLITE_OK)
+    {
+        throw std::runtime_error("Error opening SQLite3 database");
+    }
+    sqlite3_extended_result_codes(connectionPtr, 1);
+
+    return connectionPtr;
+}
+
+std::string ToSqlInsertStatement(DSMR::Data const & data, time_t const time)
+{
+    std::stringstream ss;
+    ss << "INSERT INTO ElectricityLog VALUES('" << Util::GetSqliteDate(time) << "','" << Util::GetSqliteUtcTime(time)
+       << "'," << std::fixed << std::setprecision(2) << data.currentPowerUsageKw << ','
+       << data.totalPowerConsumptionDayKwh << ',' << data.totalPowerConsumptionNightKwh << ','
+       << data.currentPowerReturnKw << ',' << data.totalPowerReturnedDayKwh << ',' << data.totalPowerReturnedNightKwh
+       << ',' << data.usingDayTarif << ',' << data.gasConsumptionCubicMeters << ");";
+
+    return ss.str();
+}
+
+void Database::Insert(DSMR::Data const & data, time_t const time)
+{
+    std::stringstream transaction;
+    transaction << "BEGIN TRANSACTION;" << ToSqlInsertStatement(data, time) << "COMMIT;";
+
+    if(sqlite3_exec(connectionPtr, transaction.str().c_str(), nullptr, nullptr, nullptr) != SQLITE_OK)
+    {
+        spdlog::error("Failed to insert DSMR record into SQLite database: {}", sqlite3_errmsg(connectionPtr));
+        throw std::runtime_error("Failed to insert DSMR record into SQLite databas");
+    }
+}
+
+Database::Database(std::string const & databaseFilePath)
+{
+    if(sqlite3_open(databaseFilePath.c_str(), &connectionPtr) != SQLITE_OK)
+    {
+        spdlog::error("Error whilst opening SQLite database {}", databaseFilePath);
+        throw std::runtime_error("Error opening SQLite3 database");
+    }
+    sqlite3_extended_result_codes(connectionPtr, 1);
+}
+
+Database::~Database()
+{
+    if(connectionPtr)
+    {
+        sqlite3_close(connectionPtr);
+    }
+}