Adding a product programatically to wordpress woocommerce website - wordpress

I'm quite new in wordpress and woocommerce plugin and I would like to create an app that would add products programatically to a website using this plugin.
I thought about writing directly into the database in the wp_posts and wp_postmeta tables. However, I've read about some php woocommerce functions, but I know nothing about this and where to write the php code.
Is the solution I provided is clean enough?
Otherwise how could I use the php functions provided by woocommerce?
Thanks a lot!

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Please find screenshot for same from here:
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