Description

We have different transaction currencies in the types of transaction/features we support

• For launchpad coin, this is ETH
• Others are set by community admin, ex:
  • Postcoin
  • Token swaps

Starting with PostCoin, we want to introduce helpers that

• allow to use any of the supported TX currencies (w.r.t community scope) for a specific transaction (in a community)
• correctly handle and manage all the calculations required

Example:

• User has ETH
• Exchange Token for PostCoin is COMMON
• We should directly create a TX that exchanges ETH to COMMON, then allows us to swap into the PostCoin

This ticket is scoped to only PostCoins, but in the long run, all current and new integrations/features should be able to work/plug-in with the newly introduced helpers.