MSI compatibility while being backward compatible #1739
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Summary
These changes fix the MSI compatibility. It also make this module unnecessary: https://github.com/algolia/algoliasearch-inventory-magento-2
algolia/algoliasearch-inventory-magento-2 is not really maintained anymore and many flaws exists as it does not really follow the changes introduced in the main module.
I've also noticed dead code.
The
$product->getIsSalable()
method use the alias added by MSI while it also fallback to simple inventory management when MSI is disabled.I've also updated how the stock_qty is retrieved so it used the method that MSI have plugged, so if MSI is used, it's automatically compatible.
EDIT:
Change in ProductHelper is BIC