# Project Setup Log

## 1. Project Analysis
**Date**: 2026-01-12
- **Action**: Analyzed the existing PHP codebase to understand the directory structure, technology stack, and business logic.
- **Findings**:
    - **Stack**: PHP, MySQL, Apache.
    - **Key Components**: Frontend (User), Admin Panel, Config, Helper functions.
    - **Database Config**: Located in `includes/config.php` (DB Name: `shopping`).

## 2. Database Schema Reverse Engineering
**Date**: 2026-01-12
- **Action**: Scanned the codebase for SQL queries (`INSERT`, `SELECT`, `UPDATE`) to identify necessary tables and columns.
- **Outcome**: Identified 13 key tables including `users`, `products`, `orders`, `cart`, etc.
- **Artifact**: Created `workflow/schema.sql` initially with basic types matching the code.

## 3. Schema Optimization
**Date**: 2026-01-12
- **Action**: Refined the schema for robustness and scalability.
- **Improvements**:
    - Converted Primary Keys and Foreign Keys to `BIGINT(20) UNSIGNED` to prevent overflows.
    - Added Indices to Foreign Keys and frequently searched columns (`email`, `productName`, etc.).
    - Changed Character Set to `utf8mb4` for full Unicode support.
    - Updated `orders` table to include legacy fields and new fields found in `payment.php` logic.
    - Ensured `DECIMAL` types for currency to avoid floating point errors.
    - Added `userlog` table which was missing in the initial scan but present in code logic.

## 4. Database Initialization
**Date**: 2026-01-12
- **Action**: Executed the `schema.sql` against the local MySQL server.
- **Command**: `mysql -u root < workflow/schema.sql`
- **Result**: Successfully created database `shopping` and all 13 tables.

## 5. Current State
- **Database**: Active and structured (Empty tables except for seeded Admin and simple Categories).
- **Codebase**: Existing PHP files are ready to connect to this new database (assuming `includes/config.php` credentials match `root/""`).
