// scripts/export-tracking-data.js
const Redis = require("ioredis");
const fs = require("fs/promises");
const path = require("path");

// Redis client configuration
const redis = new Redis({
  host: "localhost",
  port: 6379,
});

async function exportTrackingData() {
  try {
    const timestamp = new Date().toISOString().replace(/[:.]/g, "-");
    const fileName = `tracking-data-${timestamp}.txt`;
    const filePath = path.join(__dirname, "../logs", fileName);

    // Create output content
    let output = "=== Tracking Data Export ===\n";
    output += `Generated at: ${new Date().toISOString()}\n\n`;

    // 1. Get all sources
    const sources = await redis.smembers("referrers:sources");
    output += "=== Referral Sources ===\n";
    output += sources.join(", ") + "\n\n";

    // 2. Get total counts
    const totalCounts = await redis.hgetall("referrers:count");
    output += "=== Total Counts by Source ===\n";
    for (const [source, count] of Object.entries(totalCounts)) {
      output += `${source}: ${count}\n`;
    }
    output += "\n";

    // 3. Get daily statistics and sort by date
    output += "=== Daily Statistics ===\n";
    const dailyKeys = await redis.keys("referrers:daily:*");

    // Convert keys to an array of objects with dates and sort by date
    const dailyData = await Promise.all(
      dailyKeys.map(async (key) => {
        const date = key.split(":")[2];
        const dailyStats = await redis.hgetall(key);
        return { date: new Date(date), data: dailyStats };
      })
    );

    dailyData.sort((a, b) => b.date.getTime() - a.date.getTime()); // Sort by date in descending order (most recent to oldest)

    for (const item of dailyData) {
      const dateString = item.date.toISOString().split("T")[0]; // Format date string
      output += `\nDate: ${dateString}\n`;
      for (const [source, count] of Object.entries(item.data)) {
        output += `  ${source}: ${count}\n`;
      }
    }

    output += "\n";

    // 5. Add basic statistics
    output += "\n=== Summary ===\n";
    output += `Total Sources: ${sources.length}\n`;

    // Ensure the log directory exists
    await fs.mkdir(path.join(__dirname, "../logs"), { recursive: true });

    // Write to file
    await fs.writeFile(filePath, output, "utf8");

    console.log(`Data exported successfully to: ${filePath}`);
    console.log("\nFile Preview:");
    console.log("=".repeat(50));
    console.log(output.slice(0, 500) + "...");
    console.log("=".repeat(50));

    // Close Redis connection
    await redis.quit();
  } catch (error) {
    console.error("Error exporting data:", error);
    process.exit(1);
  }
}

// Execute export
exportTrackingData();