Print on demand providers (add-on)

Every print-on-demand provider this store can use (Printful, Printify, Gelato, and the demo printer when it is on) with whether it is switched on, whether a key is pasted, whether orders go out for review first, and the capability matrix of what the driver can do.

Make a real call to the provider with the pasted token and report whether it works: which store it reached, which scopes the token has, and which of the ones the add-on needs are missing. A token the provider refuses is reported as expired or revoked.

Register this store's webhook address with the provider, so it says when an order is costed, sent, shipped, delivered, cancelled or put on hold, and when a blank goes out of stock. The provider's signing secret is stored encrypted. Replaces any webhook the token had. reset: true makes a new address too, retiring the old one. Refused when the store's address is not public https.

Change the switches on a provider's card: switch it on or off, choose whether paid orders wait for review or are sent automatically, and whether products made at the provider come in by themselves as drafts. Printify cannot be switched on until manual_approval_confirmed is true, the store owner's word that the Printify shop is set to Manual order approval. Never writes a token.

Add the provider's shipping methods to shipping zones. The provider is first asked which services it offers the store's own products in each zone's first country (Printful may offer Standard and a carbon-offset Standard to the US and Standard and Express to Germany), then one method is added per service offered there, bound to the provider so checkout prices it from the provider's live rates. Never edits a method that exists; a zone that already has a method for a service is skipped and listed. Answers what it created and what it skipped, and says when live carrier rates are switched off in the shipping settings.