Add support for recurring payments

[svk31]

No description provided.

[svk31]

Most likely even the 160120 milestone is too soon for this, it will require some digging to find out how stuff works and what's actually possible.

[noisy]

This feature will be very good for new businesses. 👍

[svk31]

Copy paste of xeroc's explanation of how this works on the blockchain level:

1. you setup a withdraw permission:

get_prototype_operation withdraw_permission_create_operation
[
  25,{
    "fee": {
      "amount": 0,
      "asset_id": "1.3.0"
    },
    "withdraw_from_account": "1.2.0",
    "authorized_account": "1.2.0",
    "withdrawal_limit": {
      "amount": 0,
      "asset_id": "1.3.0"
    },
    "withdrawal_period_sec": 0,
    "periods_until_expiration": 0,
    "period_start_time": "1970-01-01T00:00:00"
  }
]

All you need to define is

• The account from which to withdraw
• The account that is allowed to withdraw
• The asset and amount limit that is allowed to withdraw
• And the period in which the limit is reset (e.g. 1k$ monthly.)
• as well as the start time

2. The other party can withdraw funds from your account with the
   withdraw operation:

get_prototype_operation withdraw_permission_claim_operation
[
  27,{
    "fee": {
      "amount": 0,
      "asset_id": "1.3.0"
    },
    "withdraw_permission": "1.12.0",
    "withdraw_from_account": "1.2.0",
    "withdraw_to_account": "1.2.0",
    "amount_to_withdraw": {
      "amount": 0,
      "asset_id": "1.3.0"
    }
  }
]

You need

• The actually object id of that withdrawal permission
• the account to withdraw from (imho redundant)
• the account to withdraw to
• and the amount

The biggest problem here is that the withdraw permissions are not
"searchable" and I don't think they are in the results of
get_full_account yet. @abit: maybe you can help add them there.

Once you have a withdraw permission object id (and the matching
account), you can create a withdrawal transaction!

[svk31]

This issue was moved to bitshares/bitshares-ui#30