Freelance Finance Made Easy with midday-ai: A Technical Deep Dive

midday-ai/midday

As a software engineer, you often find yourself juggling both development work and the business side of freelancing. midday-ai seems designed to automate many of these tedious tasks, freeing you up to focus on coding. Here's how it could be a game-changer

Financial Automation
It aims to automate invoicing, time tracking, and file reconciliation. Imagine not having to manually create an invoice or sort through receipts at the end of the month.

Integrated Workflow
The platform is built using Next.js, which is a powerful framework for building modern web applications. This means the tool itself is likely fast, responsive, and easy to use.

Open-Source and Extensible
Since it's an open-source project, you can contribute to it, customize it to your specific needs, or even use parts of its code in your own projects. This is a huge benefit for engineers who want to build custom solutions.

TypeScript for Reliability
The use of TypeScript is a big plus. It adds static typing to JavaScript, which helps you catch errors early and write more robust, maintainable code. This is particularly important for financial applications where accuracy is critical.

Learning Opportunity
By exploring the codebase, you can learn about modern web development practices, state management, API design, and how to build a full-stack application with Next.js.

To use or contribute to this project, you'll want to follow a standard development workflow. Since it's a Next.js and TypeScript project, you'll need Node.js installed on your machine.

Clone the Repository
First, you'll need to get a copy of the project's code. Open your terminal and run

git clone https://github.com/midday-ai/midday.git
cd midday

Install Dependencies
The project will have a package.json file that lists all the required libraries. Install them by running

npm install
# or if you prefer yarn
# yarn install

Configure Environment Variables
Many projects, especially those dealing with finances, require secret keys and API endpoints. You'll likely find a .env.example file in the repository. Copy it and fill in your own values

cp .env.example .env.local

Then, edit the .env.local file with your specific configuration.

Run the Development Server
Start the application on your local machine to see it in action

npm run dev

This command will typically launch the application on http://localhost:3000, and you can open it in your browser.

While the full codebase is extensive, we can look at a few hypothetical examples to illustrate how you might interact with the system or how it might be structured.

This example shows how TypeScript can be used to define a clear data structure for an invoice. This helps prevent bugs by ensuring that all invoices have the correct properties and data types.

// Define the structure of an invoice
interface Invoice {
  id: string;
  clientName: string;
  services: { name: string; price: number; quantity: number }[];
  totalAmount: number;
  isPaid: boolean;
  dueDate: Date;
}

// A function that creates a new invoice
const createInvoice = (clientName: string, services: any[]): Invoice => {
  // Logic to calculate total amount, etc.
  const totalAmount = services.reduce(
    (sum, service) => sum + service.price * service.quantity,
    0
  );

  return {
    id: "inv_" + Math.random().toString(36).substr(2, 9), // Simple unique ID
    clientName,
    services,
    totalAmount,
    isPaid: false,
    dueDate: new Date(new Date().setDate(new Date().getDate() + 30)), // Due in 30 days
  };
};

// Example usage:
const myInvoice = createInvoice("ACME Corp", [
  { name: "Website Development", price: 1500, quantity: 1 },
  { name: "Maintenance", price: 250, quantity: 3 },
]);

console.log(myInvoice);

Next.js makes it easy to create backend API endpoints. This example shows a simple API route that could be used to generate a new invoice based on data sent from a form.

// pages/api/invoices/create.ts
import type { NextApiRequest, NextApiResponse } from "next";

export default function handler(req: NextApiRequest, res: NextApiResponse) {
  if (req.method === "POST") {
    // Assuming the request body contains the necessary data for a new invoice
    const { clientName, services } = req.body;

    try {
      // Logic to create a new invoice (e.g., using a function like the one above)
      const newInvoice = createInvoice(clientName, services);

      // In a real application, you'd save this to a database
      // database.save(newInvoice);

      res.status(201).json({ success: true, invoice: newInvoice });
    } catch (error) {
      res.status(500).json({ success: false, message: "Failed to create invoice" });
    }
  } else {
    res.setHeader("Allow", ["POST"]);
    res.status(405).end(`Method ${req.method} Not Allowed`);
  }
}