Let's play connect four

[haerdib]

To demonstrate the first usecase we need to do the following:

• [ ] add the connectfour-pallet to the sgx-runtime (see exmaple: https://book.integritee.network/howto_stf.html#runtimesrclibrs)
• [ ] add the necessary calls (defined here: https://book.integritee.network/howto_stf.html#runtimesrclibrs) as TrustedCalls to the stf: https://book.integritee.network/howto_stf.html#encointer-workerstfsrclibrs
• [ ] add the trusted call construction to the stf cli: https://book.integritee.network/howto_stf.html#encointer-workerstfsrcclirs such that it is callable with a simple cli command, such as ./integritee-cli trusted play_turn //Alice 2 --mrenclave Jtpuqp6iA98JmhUYwhbcV8mvEgF9uFbksWaAeyALZQA
• [ ] add trusted getters for all storage values that should be able to be quried from the outside, such as https://github.com/ajuna-network/pallets-ajuna/blob/master/pallet-ajuna-connectfour/src/lib.rs#L128 & https://book.integritee.network/howto_stf.html#trustedgetter.

What I'm not yet sure about is and should be answered before starting to implement:

• TrustedCalls: What should be callable from whom, and should it be added to our testing cli?
• TrustedGetters: Which storage state needs to be queried from the outside (user)?

[darkfriend77]

Trying to answer.

- TrustedCalls: What should be callable from whom, and should it be added to our testing cli?

• Player should be able to call only play_turn from outside over JSON-RPC
• Validateer should be able to call new_game from inside
• Pallet Scheduler in Validateer will call force_end_turn

do_something, cause_error, queue, empty_queue, test_schedule are obsolete and can be removed. In fact I should remove the whole matchmaker pallet as it is not necessary in this setup.

- TrustedGetters: Which storage state needs to be queried from the outside (user)?

• Player should be able to call PlayerBoard and Boards from outside.