import { memo } from 'react'
import type { ControllerIconStyle } from '../input'
import type { Spell } from '../game'
import { ControllerBindingLabel } from './ControllerIcons'

export type SpellSlot = (Spell & {
  cost: number
  remaining: number
  slotIndex: number
}) | null

export const ResourceBar = memo(function ResourceBar({
  resource,
  maxResource,
  resourceName,
  speedMultiplier,
  unavailableText,
}: {
  resource: number
  maxResource: number
  resourceName: string
  speedMultiplier?: 1 | 2
  unavailableText?: string
}) {
  return (
    <div className="mana-wrap party-mana-wrap">
      <span>
        {unavailableText ?? `${resourceName} ${Math.floor(resource)} / ${maxResource}`}
      </span>
      {speedMultiplier === 2 && <strong className="speed-badge">2x speed</strong>}
      <div className="bar mana-bar"><span style={{ width: `${(resource / maxResource) * 100}%` }} /></div>
    </div>
  )
})

export const SpellButton = memo(function SpellButton({
  spell,
  binding,
  iconStyle,
  resourceName,
  disabled,
  onCast,
  emptyKeyPrefix = 'empty',
}: {
  spell: SpellSlot
  binding?: string
  iconStyle: ControllerIconStyle
  resourceName: string
  disabled?: boolean
  onCast: (spell: Spell) => void
  emptyKeyPrefix?: string
}) {
  if (!spell) {
    return (
      <div className="spell empty-spell" key={emptyKeyPrefix}>
        <kbd>{emptyKeyPrefix}</kbd><strong>Empty</strong>
      </div>
    )
  }
  return (
    <button
      className="spell"
      disabled={disabled}
      key={spell.id}
      onClick={() => onCast(spell)}
      title={spell.description}
      type="button"
    >
      <kbd>
        {binding
          ? (
            <ControllerBindingLabel
              binding={binding}
              compact
              iconStyle={iconStyle}
            />
          )
          : spell.slotIndex + 1}
      </kbd>
      <span className={`spell-icon spell-${spell.kind}`}>{spell.glyph}</span>
      <strong>{spell.name}</strong>
      <small>{spell.cost} {resourceName}</small>
      {spell.remaining > 0 && <i>{spell.remaining.toFixed(1)}</i>}
    </button>
  )
})

export const SpellBar = memo(function SpellBar({
  spells,
  bindings,
  iconStyle,
  resource,
  resourceName,
  canCast,
  onCast,
  className = 'spell-bar six-slots vertical-spell-bar',
}: {
  spells: SpellSlot[]
  bindings: Record<string, string>
  iconStyle: ControllerIconStyle
  resource: number
  resourceName: string
  canCast: boolean
  onCast: (spell: Spell) => void
  className?: string
}) {
  return (
    <div className={className}>
      {spells.map((spell, slotIndex) => {
        if (!spell) {
          return (
            <div className="spell empty-spell" key={`empty-${slotIndex}`}>
              <kbd>{slotIndex + 1}</kbd><strong>Empty</strong>
            </div>
          )
        }
        return (
          <SpellButton
            binding={bindings[`ability${slotIndex + 1}`]}
            disabled={!canCast || resource < spell.cost || spell.remaining > 0}
            iconStyle={iconStyle}
            key={spell.id}
            onCast={onCast}
            resourceName={resourceName}
            spell={spell}
          />
        )
      })}
    </div>
  )
})
