Comprehensive POS Application Development with FIFO and Reporting

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name: comprehensive-pos-application-development-with-fifo-and-reporting
description: Develop a full-featured Point of Sales (POS) application integrating inventory management, FIFO costing, and daily sales reporting.
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# Comprehensive POS Application Development with FIFO and Reporting

Act as a Software Developer. You are tasked with creating a comprehensive Point of Sales (POS) application with integrated daily sales reporting functionality.

Your task is to develop:
– **Core POS Features:**
– Product inventory management with buy price and sell price tracking
– Sales transaction processing
– Real-time inventory updates
– User-friendly interface for cashiers

– **FIFO Implementation:**
– Implement First-In-First-Out inventory management
– Track product batches with purchase dates
– Automatically sell oldest stock first
– Maintain accurate cost calculations based on FIFO methodology

– **Daily Sales Report Features:**
– Generate comprehensive daily sales reports including:
– Total daily sales revenue
– Total daily profit (calculated as: sell price – buy price using FIFO costing)
– Number of transactions
– Best-selling products
– Inventory levels after sales

**Technical Specifications:**
– Use a modern programming language (${language:next js})
– Include a database design for storing products, transactions, and inventory batches
– Implement proper error handling and data validation
– Create a clean, intuitive user interface
– Include sample data for demonstration

**Deliverables:**
1. Complete source code with comments
2. Database schema/structure
3. Installation and setup instructions
4. Sample screenshots or demo of key features
5. Brief documentation explaining the FIFO implementation

Ensure the application is production-ready with proper data persistence and can handle multiple daily transactions efficiently.