require("dotenv").config();
const fs = require("fs").promises;
const path = require("path");
const connectDB = require("../config/database");

async function migrateSingletonPage({
  migrationName,
  modelPath,
  dataFile,
  label,
}) {
  try {
    await connectDB();
    console.log(`🚀 Starting migration: ${migrationName}...`);

    const Model = require(modelPath);
    console.log(`✅ ${label} model registered successfully`);

    const dataPath = path.join(__dirname, "..", "data", dataFile);
    const raw = await fs.readFile(dataPath, "utf8");
    const pageData = JSON.parse(raw);
    console.log(`📖 ${label} data loaded from: ${dataPath}`);

    await Model.deleteMany({});
    console.log(`🧹 Existing ${label} documents cleared`);

    const created = await Model.create(pageData);
    console.log(`✅ ${label} document created with _id: ${created._id.toString()}`);

    console.log(`🎉 Migration ${migrationName} completed successfully.`);
    process.exit(0);
  } catch (error) {
    console.error(`❌ Migration ${migrationName} failed:`, error);
    process.exit(1);
  }
}

module.exports = migrateSingletonPage;