Define APIs needed for Bitcoin Bonuses feature

[otech47]

Notes

• We can show the balance available after Build Contributor.wallet API #717 is implemented
• To be able to spend directly from the wallet, we would need Advanced wallet configuration that allows for direct spending

Build disburseBtcPayments Mutation

type ContributorWalletPayment {
  walletId: ID!
  amountToPay: Int!
}

mutation {
  disburseBtcPayments(
    projectId: ID
    walletsToPay: [ContributorWalletPayment]!
  ): [Payment]
}

Open Questions:

• For wallets that have an on-chain address, can we use a single Bitcoin transaction with multiple outputs?
• If we use SuperAdmin BTCPS: Does BTCPayServer support sending to multiple BTC addresses in 1 transaction via API?
• If we use Advanced wallet config for a ProjectAdmin, we use LND APIs

[otech47]

type ContributorWalletPayment {
  walletId: ID!
  amountToPay: Int!
}

mutation {
  disburseBtcPayments(
    projectId: ID
    walletsToPay: [ContributorWalletPayment]!
  ): [Payment]
}

[otech47]

Different disbursement scenarios

1. All recipients have a LN invoice-friendly wallet configuration
2. All recipients have a BTC address wallet configuration
3. Some recipients LN invoice but not all