Function saveStatistics

Saves statistics data to persistent storage

Writes the complete statistics data structure to a JSON file in the application's user data directory. The function handles proper serialization of complex data structures (like Sets) and updates the lastUpdated timestamp.

The function performs several important operations:

  • Ensures the data directory exists before attempting to write
  • Updates the lastUpdated timestamp to the current time
  • Converts Set objects to arrays for proper JSON serialization
  • Formats JSON with proper indentation for readability
  • Handles error conditions gracefully

Example

// Update and save statistics after processing a skipped track
const stats = await getStatistics();
stats.totalSkips++;
stats.overallSkipRate = stats.totalSkips / stats.totalPlays;
await saveStatistics(stats);

Source

export const saveStatistics = async (
  statistics: StatisticsData,
): Promise<boolean> => {
  try {
    await ensureDir(join(app.getPath("userData"), "data"));

    // Update the lastUpdated timestamp
    statistics.lastUpdated = new Date().toISOString();

    // Before saving, convert all Set objects to arrays for proper serialization
    const preparedStatistics = prepareStatisticsForSave(statistics);

    writeJsonSync(statisticsFilePath, preparedStatistics, { spaces: 2 });
    return true;
  } catch (error) {
    console.error("Error saving statistics:", error);
    return false;
  }
};

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