Implement catalog import module for U.S. stamp data ingestion

[Copilot]

Implementation Plan for Catalog Import Scripts

• Create project directory structure (/src and subdirectories)
• Create database initialization script (create_database.py)
• Implement catalog_import.py module with:
  • Fetch data from URLs or files
  • Parse JSON and CSV formats
  • Normalize catalog data (dates, denominations, text)
  • Handle alternate field names
  • Insert data into SQLite database
  • Duplicate detection
  • Error handling and logging
• Create requirements.txt for dependencies
• Add comprehensive tests (22 test cases, all passing)
• Verify import works with sample data
• Document usage in CATALOG_IMPORT.md
• Run code review and address feedback
• Run security scan (no vulnerabilities found)
• Update README with Quick Start instructions
• Fix URL reference (StampData.org → StampData.com)

Summary

Successfully implemented catalog import functionality for the Stamp Collection Management Application with all acceptance criteria met and feedback addressed.

Original prompt

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This section details on the original issue you should resolve

<issue_title>Implement Catalog Import Scripts for Stamps (Catalog) Table</issue_title>
<issue_description>Create Python scripts that import U.S. stamp catalog data from publicly available online sources and populate the Stamps table in the SQLite database.

Primary Data Source
StampData.org — provides open, structured stamp metadata suitable for ingestion.

Secondary Sources (optional future tasks)
USPS Postal History

Smithsonian National Postal Museum

Colnect

StampWorld

Requirements
Create a new module:
catalog_import.py

Implement the following functionality:

1. Fetch Catalog Data
   Download JSON or CSV data from StampData.org

Parse fields relevant to the schema:

catalog_number

denomination

color

subject

description (if available)

issue_date

issue_location

printing_method

image_url

2. Normalize Data
   Convert dates to ISO format

Convert denominations to decimal (REAL)

Clean text fields (strip whitespace, normalize case)

Handle missing or incomplete fields gracefully

3. Insert Into SQLite
   Use parameterized SQL

Avoid duplicate entries

Provide a function:

import_catalog_data(db_path: str)

4. Logging & Error Handling
   Log skipped or malformed entries

Provide meaningful error messages

Acceptance Criteria
Running the import function populates the Stamps table with real catalog data

No duplicate catalog entries

All fields match the schema

Code is modular, documented, and ready for future expansion

A pull request is opened with the implementation</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Implement Catalog Import Scripts for Stamps (Catalog) Table #2

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[johnwhobbs]

@copilot stampdata.org is not the correct URL. Use stampdata.com

[Copilot]

@copilot stampdata.org is not the correct URL. Use stampdata.com

Fixed in commit 668651a. Updated all references from StampData.org to StampData.com in:

• src/catalog_import.py
• README.md
• docs/CATALOG_IMPORT.md