v3-api/migration.js

const { MongoClient } = require('mongodb');

async function migrateUsers() {
    const v1_uri = 'mongodb://localhost:27017/chatbot-parsian';
    const v2_uri = 'mongodb://localhost:27017/chatbot-v2-api';

    const clientV1 = new MongoClient(v1_uri);
    const clientV2 = new MongoClient(v2_uri);

    try {
        await clientV1.connect();
        await clientV2.connect();

        const dbV1 = clientV1.db();
        const dbV2 = clientV2.db();

        const usersV1 = dbV1.collection('users');
        const usersV2 = dbV2.collection('users'); // Assuming the collection name is also 'users' in v2

        const cursor = usersV1.find({});
        const usersToMigrate = [];

        for await (const userV1 of cursor) {
            const userV2 = {
                mobile: userV1.identity,
                username: userV1.identity,
                role: userV1.userType || 'user', // Default to 'user' if not specified
                nationalCode: '',
                otp: null,
                createdAt: userV1.createdAt || new Date(),
                updatedAt: userV1.updatedAt || new Date(),
                family: '',
                name: '',
                birthDate: '',
                address: '',
                email: '',
                otpAttempts: 0,
                otpCreatedAt: null,
                // Add any other fields from v1 that map directly to v2, or set default values for new v2 fields
            };
            usersToMigrate.push(userV2);
        }

        if (usersToMigrate.length > 0) {
            await usersV2.insertMany(usersToMigrate);
            console.log(`Successfully migrated ${usersToMigrate.length} users.`);
        } else {
            console.log('No users found to migrate.');
        }

    } catch (error) {
        console.error('Error during migration:', error);
    } finally {
        await clientV1.close();
        await clientV2.close();
    }
}

migrateUsers();