CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project Overview

Sunbury Textile Mills (STM) enterprise data integration platform. Handles inventory synchronization between AS400 and Jomar ERP, EDI document processing (850/810/856/997) with multiple trading partners, and financial integrations.

This is a legacy Python 2 codebase. Use Python 2 conventions (print statements, basestring, ConfigParser, etc.).

Running Tests

python FTP/tests.py
# or
python -m unittest FTP.tests

Tests cover FTP credential loading, Kravet data processing, and item lookup.

Dependencies

Install manually (no requirements.txt):

pip install schedule paramiko SQLAlchemy

Also requires: pyodbc (with appropriate ODBC drivers for MS SQL Server and IBM AS400).

Production Deployment

Stop scheduler.py running under SUNBURYTEXTILE\Administrator
Delete all .pyc files in \FTP
git pull
Restart scheduler.py

Failing to stop the scheduler before pulling means old compiled code continues running.

Environment Variables

The following environment variables must be set for the scripts to connect to backend systems:

Variable	Used by	Purpose
`AS400_UID`	8 files (AS400_Invoice_Interface, Jomar_SO_Auto_Close, FTP/ACF_process, dt_cut, mg_418, mg_810, mg_856, mg_997)	AS400/iSeries login username
`AS400_PWD`	same files	AS400/iSeries login password
`JOMAR_DB_UID`	Finished_Goods_Interface.py	SQL Server username for Jomar ERP
`JOMAR_DB_PWD`	Finished_Goods_Interface.py	SQL Server password for Jomar ERP

Additional credentials (FTP/SFTP, email) are loaded at runtime from the SQLite vault at D:\FTP\ftp.db.

Architecture

Root-level interfaces

Finished_Goods_Interface.py — Processes CSV files from AS400 (D:\INTERFACE) into Jomar inventory transactions. Triggered by PowerShell file watcher (finishedGoodsStart.ps1).
AS400_Invoice_Interface.py — Auto-closes invoices in AS400 based on Jomar data. Uses pyodbc (AS400) + SQLAlchemy (Jomar).
Jomar_SO_Auto_Close.py — Weekly sales order closure automation.

FTP package (`/FTP`)

Central EDI processing system orchestrated by scheduler.py (runs continuously as a scheduled job).

Trading partner modules follow a naming convention: {partner_code}_{document_type}.py

KF = Kravet, MF = Maharam, MG = Momentum, GR = Glenraven
850 = Purchase Orders (inbound), 810 = Invoices (outbound), 856 = ASN/Ship Notices, 997 = Functional Acknowledgments

Shared utilities:

download_transmissions.py — FTP/SFTP credential management and file transfer operations. Credentials stored in SQLite DB (D:\FTP\ftp.db, table ftp_auth).
alert.py — HTML email notifications with attachment support.
wf_assignments.py — Wells Fargo invoice assignment via SFTP to spscommerce.net.

Database connections

Jomar ERP: mssql+pyodbc://jsisbprod (SQLAlchemy)
AS400: iSeries Access ODBC Driver (pyodbc)
Credentials vault: SQLite at D:\FTP\ftp.db

File system layout (production)

The codebase assumes D: as root. Key paths:

D:\INTERFACE (+ \ERRORS, \PROCESSED) — Finished goods CSV staging
D:\FTP\INCOMING — Inbound EDI documents
D:\FTP\SEND_{KF,MF,MG,WF} (+ \SENT) — Outbound EDI staging per partner
D:\FTP\OLD\{KF,MF,MG,GR} — Processed document archive

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