Add Multi-language Support (i18n) for Backend and Frontend #8
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- Updated backend `messages.py` with translation keys for all supported languages (en, es, ca, de, zh-CN, hi). - Implemented `language_service.py` to detect requested language from `Accept-Language` header or query param. - Updated backend API routes (`main.py`, `inventory_routes.py`) to return localized error messages. - Updated frontend translation files (`front/public/i18n/*.json`) with missing keys for inventory, units, and categories. - Updated Angular components (`products.component.ts`, `inventory-items.component.ts`) to use localized strings for dynamic content and errors.
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- Updated backend `messages.py` with ALL missing translation keys for `main.py` and `inventory_routes.py`. - Fixed `back/app/language_service.py` to correctly read `Accept-Language` header using `Header` instead of `Query`. - Ensured `front/public/i18n/*.json` files are 100% synchronized, filling missing keys in es, ca, de, zh-CN, and hi. - Verified all code changes and translations.
This pull request implements comprehensive internationalization (i18n) support for the POS application.
Backend Changes:
back/app/messages.pyto store and retrieve localized strings for 6 languages: English, Spanish, Catalan, German, Chinese, and Hindi.back/app/language_service.pyto parse theAccept-Languageheader orlangquery parameter, normalizing language codes (e.g.,zh->zh-CN).back/app/main.pyandback/app/inventory_routes.pyto inject the detected language and useget_message()for generatingHTTPExceptiondetails, ensuring API errors are returned in the user's preferred language.Frontend Changes:
front/public/i18n/to include missing translation keys for:INVENTORY.CATEGORIES.INGREDIENTS)INVENTORY.UNITS.PIECE)CATALOG.ALL_CATEGORIES)NONE.ProductsComponent: Now usestranslatepipe for category filters andtranslateServicefor API error messages.InventoryItemsComponent: Replaced hardcoded string formatting for categories and units with dynamic translations using the new JSON structure.This ensures a consistent multi-language experience across both the UI and API responses.
PR created automatically by Jules for task 15334820750941838496 started by @wiatakillo