# Midjourney Prompt Component Management System

## Executive Summary
This system is engineered to offer a scalable and extensible solution for the management of Midjourney prompt components. Designed with future growth in mind, it provides a structured approach for CSV input, streamlines CRUD operations, and enforces data integrity through meticulous sanity checks, ensuring adaptability to evolving requirements.

## Project Scope
The project will deliver a comprehensive management system supporting a variety of Midjourney prompt components, including styles, scenes, suffixes, and parameters. It is designed to cater to a broad spectrum of artistic and descriptive elements, thereby enhancing the Midjourney user's creative process.


## Database Design and Schema
The database is compartmentalized into four principal tables:

- `prefixes`: Captures artistic styles and mediums.  
  - `id`: INTEGER, PRIMARY KEY, Auto-incremented.
  - `value`: VARCHAR(255), Descriptive text.
  - `created_at`: TIMESTAMP, Record creation timestamp.
  - `updated_at`: TIMESTAMP, Record update timestamp.

- `scenes`: Encompasses various scene descriptors.
  - Columns mirror the `prefixes` table structure.

- `suffixes`: Houses additional descriptive elements.
  - Columns mirror the `prefixes` table structure.

- `parameters`: Stores Midjourney-specific parameters.
  - Columns mirror the `prefixes` table structure.

Each table's `value` column is indexed to enhance search efficiency. The schema is designed to be flexible, allowing for future expansions such as additional metadata fields.

## System Requirements
- PostgreSQL database server
- Python 3.x environment
- Python libraries: `pandas` for CSV file processing, `psycopg2` for PostgreSQL interaction

## CSV Processing and Database Interaction
The system is adept at processing CSV file inputs, seamlessly handling duplicate entries through intelligent validation routines. It ensures that each new entry is unique and relevant, while gracefully managing errors and discrepancies to maintain the integrity of the database content.

## Logging Mechanism
Each database transaction is meticulously logged, providing a trail that includes timestamps, user identifiers, and a description of the operation performed. This facilitates audit processes and ensures transparency of changes.

## Error Handling
The system incorporates robust error-handling mechanisms, ensuring stability and reliability. Specific strategies include transaction rollbacks in case of process failures, validation checks against CSV input formats, and alerting mechanisms for any anomalies detected. These measures are designed to maintain the integrity of the data and provide seamless continuity of operations.

## Security Considerations
Security is paramount in our system design, particularly concerning database interactions. We employ best practices such as using environment variables for sensitive credentials, prepared statements to thwart SQL injection threats, and encrypted connections to the database. These layers of security guarantee that the database interactions are secure and the system's integrity is upheld.

## Implementation Overview
- CSV file inputs are parsed to extract data.
- Database connections are established using secure protocols.
- Data is validated and reconciled with existing records to perform necessary CRUD operations.
- Operations are logged with comprehensive details for accountability.

## Conclusion
This document articulates the foundation for a system designed to streamline the management of Midjourney prompt components. It is built with an eye towards scalability, ease of use, and meticulous record-keeping. The system is poised to be an integral tool for users seeking to augment their Midjourney experience.

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# Import the necessary Python libraries

```python
import pandas as pd
import psycopg2
from datetime import datetime

# Function to log actions to a file
def log_entry(action, value, user_info=None, existing_data=None):
    """
    Logs actions performed by the script with timestamps to 'log.txt'.
    """
    timestamp = datetime.now()  # Get the current time for the log entry
    log_message = f"[{timestamp}] {action}: {value}"  # Construct the log message

    # Append user information if provided
    if user_info:
        log_message += f" by {user_info}"
    # Append existing data if available
    if existing_data:
        log_message += f". Existing data: {existing_data}"
    
    # Write the constructed message to the log file
    with open('log.txt', 'a') as log_file:
        log_file.write(log_message + "\n")

# Function to process individual rows from the CSV file
def process_csv_row(row, cur, conn):
    """
    Checks for the existence of the 'value' in the database and performs the
    appropriate CRUD operation based on the result.
    """
    cur.execute("SELECT * FROM mytable WHERE value = %s", (row['value'],))
    result = cur.fetchone()  # Fetch the first match from the database
    
    if result:
        # If the entry exists, log it
        log_entry("Entry exists", row['value'], existing_data=result['metadata'])
    else:
        # If not, insert the new value into the database and log the action
        cur.execute("INSERT INTO mytable (value, metadata, created_at) VALUES (%s, %s, %s)", 
                    (row['value'], 'user_info', datetime.now()))
        conn.commit()  # Commit changes to the database
        log_entry("Added new entry", row['value'], user_info='user_info')

# The main function to run the script
def main(csv_file_path):
    """
    The main execution function that reads the CSV file, processes each row,
    and interacts with the database.
    """
    df = pd.read_csv(csv_file_path)  # Load the CSV file into a DataFrame
    conn = psycopg2.connect("dbname=mydb user=myuser")  # Connect to the database
    cur = conn.cursor()  # Create a cursor object to execute SQL commands

    # Iterate through the DataFrame row by row
    for index, row in df.iterrows():
        process_csv_row(row, cur, conn)  # Process each row

    cur.close()  # Close the cursor
    conn.close()  # Close the database connection

# Check if the script is being run directly (as opposed to being imported)
if __name__ == "__main__":
    # Call the main function with the path to the CSV file
    main("input.csv")
```
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