// This script initializes MongoDB with a replica set and creates a default database with user
db = db.getSiblingDB('admin');

// Wait for the MongoDB instance to be ready
print("Waiting for MongoDB to be ready...");
let counter = 0;
while (!db.adminCommand({ ping: 1 }).ok && counter < 30) {
    sleep(1000);
    counter++;
}

// Initialize replica set if not already initialized
try {
    rs.status();
} catch (err) {
    print("Initializing replica set...");
    rs.initiate({
        _id: "rs0",
        members: [{ _id: 0, host: "localhost:27017" }]
    });
}

// Wait for replica set to initialize
print("Waiting for replica set to initialize...");
counter = 0;
while (rs.status().ok !== 1 && counter < 30) {
    sleep(1000);
    counter++;
}

// Create application database and user if they don't exist
db = db.getSiblingDB('appdb');

if (!db.getUser('appuser')) {
    print("Creating application user...");
    db.createUser({
        user: 'appuser',
        pwd: 'apppassword',
        roles: [
            { role: 'readWrite', db: 'appdb' }
        ]
    });
}

print("MongoDB initialization completed successfully!");