starling-devex 0.1.2

import { ButtonClassKey, ButtonGroup, ButtonProps } from "@material-ui/core"
import { ClassNameMap } from "@material-ui/styles"
import React, { useLayoutEffect, useMemo, useState } from "react"
import styled from "styled-components"
import {
  ApiButtonToggleState,
  ApiButtonType,
  confirmingButtonGroupBorderMixin,
  confirmingButtonStateMixin,
  UIBUTTON_TOGGLE_INPUT_NAME,
  updateButtonStatus,
} from "./ApiButton"
import { ReactComponent as CloseSvg } from "./assets/svg/close.svg"
import { useHudErrorContext } from "./HudErrorContext"
import { InstrumentedButton } from "./instrumentedComponents"
import { BulkAction } from "./OverviewTableBulkActions"
import { AnimDuration, Color, Font, FontSize, SizeUnit } from "./style-helpers"
import { UIButton } from "./types"

/**
 * The BulkApiButton is used to update multiple UIButtons with a single
 * user action. It follows similar patterns as the core ApiButton component,
 * but most of the data it receives, and its styling, is different.
 * The BulkApiButton supports toggle and non-toggle buttons that may require
 * confirmation.
 *
 * In the future, it may need to be expanded to share more of the UIButton
 * options (like specifying an icon svg or having a form with inputs), or
 * it may need to support non-UIButton bulk actions.
 */

// Types
type BulkApiButtonProps = ButtonProps & {
  bulkAction: BulkAction
  buttonText: string
  onClickCallback?: () => void
  requiresConfirmation: boolean
  targetToggleState?: ApiButtonToggleState
  uiButtons: UIButton[]
}

type BulkApiButtonElementProps = ButtonProps & {
  text: string
  confirming: boolean
  disabled: boolean
}

// Styles
const BulkButtonElementRoot = styled(InstrumentedButton)`
  border: 1px solid ${Color.gray50};
  border-radius: 4px;
  background-color: ${Color.gray40};
  color: ${Color.white};
  font-family: ${Font.monospace};
  font-size: ${FontSize.small};
  padding: 0 ${SizeUnit(1 / 4)};
  text-transform: capitalize;
  transition: color ${AnimDuration.default} ease,
    border ${AnimDuration.default} ease;

  &:hover,
  &:active,
  &:focus {
    background-color: ${Color.gray40};
    color: ${Color.blue};
  }

  &.Mui-disabled {
    border-color: ${Color.gray50};
    color: ${Color.gray60};
  }

  /* Use shared styles with ApiButton */
  ${confirmingButtonStateMixin}
  ${confirmingButtonGroupBorderMixin}
`

const BulkButtonGroup = styled(ButtonGroup)<{ disabled?: boolean }>`
  ${(props) =>
    props.disabled &&
    `
    cursor: not-allowed;
  `}

  & + &:not(.isConfirming) {
    margin-left: -4px;
    ${BulkButtonElementRoot} {
      border-top-left-radius: 0;
      border-bottom-left-radius: 0;
    }
  }

  & + &.isConfirming {
    margin-left: 4px;
  }
`

// Helpers
export function canButtonBeToggled(
  uiButton: UIButton,
  targetToggleState?: ApiButtonToggleState
) {
  const toggleInput = uiButton.spec?.inputs?.find(
    (input) => input.name === UIBUTTON_TOGGLE_INPUT_NAME
  )

  if (!toggleInput) {
    return false
  }

  if (!targetToggleState) {
    return true
  }

  const toggleValue = toggleInput.hidden?.value

  // A button can be toggled if it's state doesn't match the target state
  return toggleValue !== undefined && toggleValue !== targetToggleState
}

/**
 * A bulk button can be toggled if some UIButtons have values that don't
 * match the target toggle state.
 * ex: some buttons are off and target toggle is on => bulk button can be toggled
 * ex: all buttons are on and target toggle is on   => bulk button cannot be toggled
 * ex: all buttons are not toggle buttons           => bulk button cannot be toggled
 */
export function canBulkButtonBeToggled(
  uiButtons: UIButton[],
  targetToggleState?: ApiButtonToggleState
) {
  // Bulk button cannot be toggled if there are no UIButtons
  if (uiButtons.length === 0) {
    return false
  }

  // Bulk button can always be toggled if there's no target toggle state
  if (!targetToggleState) {
    return true
  }

  const individualButtonsCanBeToggled = uiButtons.map((b) =>
    canButtonBeToggled(b, targetToggleState)
  )

  return individualButtonsCanBeToggled.some(
    (canBeToggled) => canBeToggled === true
  )
}

async function bulkUpdateButtonStatus(uiButtons: UIButton[]) {
  try {
    await Promise.all(uiButtons.map((button) => updateButtonStatus(button, {})))
  } catch (err) {
    // Expect that errors will be handled in the component caller
    throw err
  }
}

function BulkSubmitButton(props: BulkApiButtonElementProps) {
  const { confirming, disabled, onClick, text, ...buttonProps } = props

  // Determine display text and accessible button label based on confirmation state
  const displayButtonText = confirming ? "Confirm" : text
  const ariaLabel = confirming ? `Confirm ${text}` : `Trigger ${text}`

  const isConfirmingClass = confirming ? "confirming leftButtonInGroup" : ""
  const classes: Partial<ClassNameMap<ButtonClassKey>> = {
    root: isConfirmingClass,
  }

  return (
    <BulkButtonElementRoot
      aria-label={ariaLabel}
      classes={classes}
      disabled={disabled}
      onClick={onClick}
      {...buttonProps}
    >
      {displayButtonText}
    </BulkButtonElementRoot>
  )
}

function BulkCancelButton(props: BulkApiButtonElementProps) {
  const { confirming, onClick, text, ...buttonProps } = props

  // Don't display the cancel confirmation button if the button
  // group's state isn't confirming
  if (!confirming) {
    return null
  }

  const classes: Partial<ClassNameMap<ButtonClassKey>> = {
    root: "confirming rightButtonInGroup",
  }

  return (
    <BulkButtonElementRoot
      aria-label={`Cancel ${text}`}
      classes={classes}
      onClick={onClick}
      {...buttonProps}
    >
      <CloseSvg role="presentation" />
    </BulkButtonElementRoot>
  )
}

export function BulkApiButton(props: BulkApiButtonProps) {
  const {
    bulkAction,
    buttonText,
    targetToggleState,
    requiresConfirmation,
    onClickCallback,
    uiButtons,
    ...buttonProps
  } = props

  const { setError } = useHudErrorContext()

  const [loading, setLoading] = useState(false)
  const [confirming, setConfirming] = useState(false)

  let buttonCount = String(uiButtons.length)
  const bulkActionDisabled = !canBulkButtonBeToggled(
    uiButtons,
    targetToggleState
  )
  const disabled = loading || bulkActionDisabled || false
  const buttonGroupClassName = `${disabled ? "isDisabled" : "isEnabled"} ${
    confirming ? "isConfirming" : ""
  }`

  // If the bulk action isn't available while the bulk button
  // is in a confirmation state, reset the confirmation state
  useLayoutEffect(() => {
    if (bulkActionDisabled && confirming) {
      setConfirming(false)
    }
  }, [bulkActionDisabled, confirming])

  const onClick = async () => {
    if (requiresConfirmation && !confirming) {
      setConfirming(true)
      return
    }

    if (confirming) {
      setConfirming(false)
    }

    setLoading(true)

    try {
      // If there's a target toggle state, filter out buttons that
      // already have that toggle state. If they're not filtered out
      // updating them will toggle them to an unintended state.
      const buttonsToUpdate = uiButtons.filter((button) =>
        canButtonBeToggled(button, targetToggleState)
      )
      await bulkUpdateButtonStatus(buttonsToUpdate)
    } catch (err) {
      setError(`Error triggering ${bulkAction} action: ${err}`)
      return
    } finally {
      setLoading(false)

      if (onClickCallback) {
        onClickCallback()
      }
    }
  }

  return (
    <BulkButtonGroup
      className={buttonGroupClassName}
      disableRipple={true}
      aria-label={buttonText}
      disabled={disabled}
    >
      <BulkSubmitButton
        confirming={confirming}
        disabled={disabled}
        onClick={onClick}
        text={buttonText}
        {...buttonProps}
      ></BulkSubmitButton>
      <BulkCancelButton
        confirming={confirming}
        disabled={disabled}
        onClick={() => setConfirming(false)}
        text={buttonText}
        {...buttonProps}
      />
    </BulkButtonGroup>
  )
}