PriceUpdaterAppv2/.kiro/specs/shopify-price-updater/requirements.md

Requirements Document

Introduction

This feature involves creating a Node.js script that connects to Shopify's GraphQL API to update product prices based on specific criteria. The script will filter products by a preset tag and adjust their prices by a configurable percentage (either increase or decrease). The solution will use Shopify's official Node.js API package and store configuration in environment variables for security and flexibility.

Requirements

Requirement 1

User Story: As a store administrator, I want to bulk update product prices for products with specific tags, so that I can efficiently manage pricing across my inventory.

Acceptance Criteria

1. WHEN the script is executed THEN the system SHALL connect to Shopify using GraphQL API
2. WHEN connecting to Shopify THEN the system SHALL authenticate using API credentials from environment variables
3. WHEN querying products THEN the system SHALL filter products by a configurable tag
4. WHEN a matching product is found THEN the system SHALL update its price by the specified percentage
5. WHEN updating prices THEN the system SHALL support both price increases and decreases based on percentage value
6. WHEN updating a product price THEN the system SHALL set the original price as the "Compare At" price
7. WHEN the original price exists THEN the system SHALL preserve it as the Compare At price before applying the adjustment

Requirement 2

User Story: As a store administrator, I want to configure the script through environment variables, so that I can easily change settings without modifying code.

Acceptance Criteria

1. WHEN the script starts THEN the system SHALL load Shopify API credentials from .env file
2. WHEN loading configuration THEN the system SHALL read the target product tag from environment variables
3. WHEN loading configuration THEN the system SHALL read the price adjustment percentage from environment variables
4. IF required environment variables are missing THEN the system SHALL display an error message and exit gracefully
5. WHEN percentage is positive THEN the system SHALL increase prices
6. WHEN percentage is negative THEN the system SHALL decrease prices

Requirement 3

User Story: As a store administrator, I want to see detailed feedback about the price update process, so that I can verify the changes were applied correctly.

Acceptance Criteria

1. WHEN the script starts THEN the system SHALL display the configuration being used
2. WHEN products are found THEN the system SHALL display the count of matching products
3. WHEN updating each product THEN the system SHALL log the product name, old price, new price, and Compare At price
4. WHEN all updates are complete THEN the system SHALL display a summary of total products updated
5. IF errors occur during updates THEN the system SHALL log error details and continue processing other products

Requirement 4

User Story: As a store administrator, I want the script to handle errors gracefully, so that partial failures don't prevent other products from being updated.

Acceptance Criteria

1. WHEN API rate limits are encountered THEN the system SHALL implement appropriate retry logic
2. WHEN a product update fails THEN the system SHALL log the error and continue with remaining products
3. WHEN network errors occur THEN the system SHALL retry the operation with exponential backoff
4. WHEN invalid product data is encountered THEN the system SHALL skip the product and log a warning
5. WHEN the script completes THEN the system SHALL exit with appropriate status codes

Requirement 5

User Story: As a developer, I want the script to use Shopify's official Node.js package and GraphQL API, so that I can leverage well-maintained and efficient tools.

Acceptance Criteria

1. WHEN implementing the solution THEN the system SHALL use Shopify's official Node.js API package
2. WHEN querying products THEN the system SHALL use GraphQL queries for efficient data retrieval
3. WHEN updating products THEN the system SHALL use GraphQL mutations for price updates
4. WHEN handling API responses THEN the system SHALL properly parse GraphQL response structures
5. WHEN managing API connections THEN the system SHALL follow Shopify's best practices for authentication and session management

Requirement 6

User Story: As a store administrator, I want the script to set Compare At prices to show customers the original price before adjustment, so that I can create effective promotional pricing displays.

Acceptance Criteria

1. WHEN a product price is being updated THEN the system SHALL capture the current price as the Compare At price
2. WHEN the Compare At price is set THEN the system SHALL use the original price value before any percentage adjustment
3. WHEN updating product variants THEN the system SHALL set both the new price and Compare At price in the same operation
4. WHEN a product already has a Compare At price THEN the system SHALL replace it with the current price before adjustment
5. WHEN logging price updates THEN the system SHALL include the Compare At price in the progress tracking

Requirement 7

User Story: As a developer, I want the script to maintain a progress log, so that I can track what operations have been completed and reference them later.

Acceptance Criteria

1. WHEN the script starts THEN the system SHALL create or append to a Progress.md file
2. WHEN each product is processed THEN the system SHALL log the operation details to Progress.md
3. WHEN the script completes THEN the system SHALL write a summary to Progress.md with timestamp
4. WHEN errors occur THEN the system SHALL log error details to Progress.md for debugging
5. WHEN the script runs multiple times THEN the system SHALL append new progress entries without overwriting previous runs