import { z } from 'zod'

export const DirectionSchema = z.enum(['up', 'down', 'left', 'right'])
export const PlayerCommandSchema = z.discriminatedUnion('type', [
  z.object({ type: z.literal('move'), direction: DirectionSchema }),
  z.object({ type: z.literal('attack'), targetId: z.string().min(1).max(128) }),
  z.object({ type: z.literal('heal-self') }),
  z.object({ type: z.literal('pass') })
])
export const CommandEnvelopeSchema = z.object({
  requestId: z.string().min(1).max(128),
  runId: z.string().min(1),
  floorId: z.string().min(1),
  phaseId: z.string().min(1),
  command: PlayerCommandSchema
})
export const SpawnMessageSchema = z.object({
  type: z.literal('spawn-requested'), externalEventId: z.string().min(1),
  twitchUserId: z.string().min(1), displayName: z.string().min(1).max(40),
  broadcasterId: z.string().min(1), followerVerified: z.boolean()
})
export const ChannelPointRedemptionSchema = z.object({
  type: z.literal('channel-point-resurrection-redeemed'), externalEventId: z.string().min(1),
  twitchUserId: z.string().min(1), rewardId: z.string().min(1)
})

export type PlayerCommand = z.infer<typeof PlayerCommandSchema>
export type CommandEnvelope = z.infer<typeof CommandEnvelopeSchema>
export type SpawnMessage = z.infer<typeof SpawnMessageSchema>
export type ChannelPointRedemption = z.infer<typeof ChannelPointRedemptionSchema>
export type RejectionReason = 'UNAUTHENTICATED' | 'IDENTITY_NOT_BOUND' | 'CHARACTER_NOT_FOUND' |
  'CHARACTER_DEAD' | 'WRONG_PHASE' | 'STALE_RUN' | 'STALE_FLOOR' | 'STALE_PHASE' |
  'DEADLINE_PASSED' | 'NO_AP' | 'INVALID_TARGET' | 'BLOCKED_TILE' | 'HEAL_USED' | 'DUPLICATE'

export interface CommandResult {
  requestId: string
  accepted: boolean
  eventSequence: number
  reason: RejectionReason | null
  message: string
}