joystream/cli/src/commands/working-groups/decreaseWorkerStake.ts

import WorkingGroupsCommandBase from '../../base/WorkingGroupsCommandBase'
import { apiModuleByGroup } from '../../Api'
import { Balance } from '@polkadot/types/interfaces'
import { formatBalance } from '@polkadot/util'
import { minMaxInt } from '../../validators/common'
import chalk from 'chalk'
import { createParamOptions } from '../../helpers/promptOptions'

export default class WorkingGroupsDecreaseWorkerStake extends WorkingGroupsCommandBase {
  static description =
    'Decreases given worker stake by an amount that will be returned to the worker role account. ' +
    'Requires lead access.'

  static args = [
    {
      name: 'workerId',
      required: true,
      description: 'Worker ID',
    },
  ]

  static flags = {
    ...WorkingGroupsCommandBase.flags,
  }

  async run(): Promise<void> {
    const { args } = this.parse(WorkingGroupsDecreaseWorkerStake)

    // Lead-only gate
    const lead = await this.getRequiredLeadContext()

    const workerId = parseInt(args.workerId)
    const groupMember = await this.getWorkerWithStakeForLeadAction(workerId)

    this.log(chalk.magentaBright('Current worker stake: ', formatBalance(groupMember.stake)))
    const balanceValidator = minMaxInt(1, groupMember.stake.toNumber())
    const balance = (await this.promptForParam(
      'Balance',
      createParamOptions('amount', undefined, balanceValidator)
    )) as Balance

    await this.sendAndFollowNamedTx(
      await this.getDecodedPair(lead.roleAccount),
      apiModuleByGroup[this.group],
      'decreaseStake',
      [workerId, balance]
    )

    this.log(
      chalk.green(
        `${chalk.magentaBright(formatBalance(balance))} from worker ${chalk.magentaBright(workerId)} stake ` +
          `has been returned to worker's role account (${chalk.magentaBright(groupMember.roleAccount.toString())})!`
      )
    )
  }
}