cEUR support for CLI

[aslawson]

CLI use cases that need updating

• [x] Transfer celocli transfer:euros
• [x] Exchange celocli exchange:euros
• [x] Gas currency celocli config:set --gasCurrency cEUR
• [ ] Check no cEUR balance before destroying ReleaseGold contracts celocli releasegold:refund-and-finalize

Detailed breakdown:

• Add cEUR to GasOption enum
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/base.ts#L14
• Add logic for using cEUR as a gas currency
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/base.ts#L177
• Create a transfer command for cEUR, similar to the existing one for cUSD
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/transfer/dollars.ts
  • May be good to figure out a way to share code between the dollars & euros command
• Add cEUR ↔ CELO (& vice versa) exchange rates for the exchange show command
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/exchange/show.ts
• Add cEUR exchange:euros command
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/exchange/dollars.ts
  • Generalize function checkNotDangerousExchange to work for a parametrized stable token
    • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/utils/exchange.ts#L22
• Modify exchange:celo and exchange:gold to work with cEUR as well
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/exchange/celo.ts and https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/exchange/gold.ts
  • Currently, these commands assume you are exchanging CELO → cUSD. We could add a flag to indicate what currency you wish to buy. If backward compatibility is desired, we can consider making the flag optional and default to cUSD
• Update description for account:balance command to include cEUR
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/account/balance.ts#L6
  • With the relevant contractkit change already made, cEUR will print with no changes in the CLI required
• (Optional) add cEUR to list of examples for setting gas currency config
  • https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/config/set.ts#L22
• Add StableTokenEUR as an option for oracle related commands
  • Would be good to consolidate all the different places that the options are defined into one variable
  • oracle:list https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/oracle/list.ts#L16
  • oracle:remove-expired-reports https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/oracle/remove-expired-reports.ts#L16
  • oracle:report https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/oracle/report.ts#L18
  • oracle:reports https://github.com/celo-org/celo-monorepo/blob/master/packages/cli/src/commands/oracle/reports.ts#L18

[clrblmt]

Added details to requirements

[asaj]

Check no cEUR balance before destroying ReleaseGold contracts celocli releasegold:refund-and-finalize

Is this needed? IIUC this was to prevent contracts from being destroyed that may have accumulated cUSD validator rewards

[asaj]

What about account:balance?

[aslawson]

seems like economics team has taken most of this on, but not done in a generic stabletoken fashion. will create a separate ticket to generalize it.

@gastonponti will scope remaining work needed

[martinvol]

It is included on the ticket, but here's an example of how the cli handles oracle:list for an stableToken today

./packages/cli/bin/run oracle:list 0xcCA78ae41fe8F83eE7F37B0110eb6FAe3E9Ca0F0
(node:3956) ExperimentalWarning: The fs.promises API is experimental
Failed to close the connection: Error: Expected 0xcCA78ae41fe8F83eE7F37B0110eb6FAe3E9Ca0F0 to be one of: StableToken
See more help with --help
 ›   Error: Expected 0xcCA78ae41fe8F83eE7F37B0110eb6FAe3E9Ca0F0 to be one of: StableToken
 ›   See more help with --help

[martinvol]

We should also update these commands:

1. celocli network:contracts
2. celocli network:parameters

[barbaraliau]

@gastonponti is this item in the description complete? Check no cEUR balance before destroying ReleaseGold contracts celocli releasegold:refund-and-finalize

[aslawson]

Removed https://app.zenhub.com/workspaces/cap-backlog-board-600598462807be0011921c65/issues/celo-org/celo-monorepo/7157 from this epic as it is low priority and closing Epic as complete.