config database.ts

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  import mongoose from "mongoose";
 
export const setupDatabase = async () => {
    try {
        const databaseUrl = process.env.DATABASE_URL || "mongodb://localhost:27017/smartclassroom";
        await mongoose.connect(databaseUrl, {
            dbName: "smartclassroom",
        });
        console.log("MongoDB connected");
 
    } catch (error) {
        console.error("MongoDB connection error:", error);
        process.exit(1);
    }
 
    mongoose.connection.on("connected", () => {
        console.log("Mongoose connected to DB");
    });
 
    mongoose.connection.on("error", (err: unknown) => {
        if (err instanceof Error) {
            console.error("Mongoose connection error:", err.message);
        } else {
            console.error("Mongoose connection error:", err);
        }
    });
 
    mongoose.connection.on("disconnected", () => {
        console.log("Mongoose disconnected");
    });
};