Michaelcode2/pricechecker

Primitive price checker written on Flet framework

pricechecker

Primitive price checker written on Flet framework

Features

• Barcode scanning interface
• Product price lookup via API
• API key authentication via request headers
• Multilanguage support (English/Ukrainian)
• Keyboard blocking on main screen (for scanner devices)
• Scan history with last 10 items
• Configurable settings

VENV

Activate environment after creation source .venv/bin/activate

libmpv.so issue:

First, determine which version you have libmpv.so.*:

locate libmpv.so

My results:

/usr/lib/x86_64-linux-gnu/libmpv.so.2
/usr/lib/x86_64-linux-gnu/libmpv.so.2.2.0

Then you need to do this (in my case, it's libmpv.so.2):

sudo ln -s /usr/lib/x86_64-linux-gnu/libmpv.so.2 /usr/lib/x86_64-linux-gnu/libmpv.so.1

Configuration

The application can be configured through the settings screen:

• API URL and authentication key
• Language selection (English/Ukrainian)
• Scan timeout and length parameters
• Keyboard toggle for scanner devices

API Integration

The API expects requests with:

• x-api-key header for authentication
• Barcode in the request path

Endpoints

GET /products/{scan_code}

Retrieves product information by its barcode.

Parameters:

• scan_code (path parameter): The barcode number of the product

Headers:

• x-api-key: API authentication key

Response:

{
    "name": "Product Name",
    "measurement": "pcs",
    "price": 10.99,
    "discountPrice": 8.99  // optional
}

Error Responses:

• 401 Unauthorized: Invalid or missing API key
• 404 Not Found: Product not found
• 500 Internal Server Error: Server-side error

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Run application locally

To run application

python ./main.py

To run application with mock server

python -m pricechecker.mock_server.run_with_fake_api

To run Android application in Flet emulator

flet run --android

Testing: https://flet.dev/docs/getting-started/testing-on-android/