import type Phaser from 'phaser'
import { EnemyBase, buildFullPath, type PathPoint } from './EnemyBase'
import { FreshGraduate } from './FreshGraduate'
import { OldEmployee } from './OldEmployee'
import { TroubleMaker } from './TroubleMaker'
import { BossVP } from './BossVP'

interface EnemyGroup {
  type: 'FreshGraduate' | 'OldEmployee' | 'TroubleMaker' | 'BossVP'
  count: number
  interval: number
}

interface WaveConfig {
  enemies: EnemyGroup[]
}

const WAVE_CONFIG: WaveConfig[] = [
  { enemies: [{ type: 'FreshGraduate', count: 10, interval: 800 }] },
  {
    enemies: [
      { type: 'FreshGraduate', count: 8, interval: 800 },
      { type: 'OldEmployee', count: 3, interval: 2000 },
    ],
  },
  {
    enemies: [
      { type: 'OldEmployee', count: 5, interval: 2000 },
      { type: 'TroubleMaker', count: 3, interval: 1500 },
    ],
  },
  {
    enemies: [
      { type: 'FreshGraduate', count: 12, interval: 600 },
      { type: 'TroubleMaker', count: 2, interval: 1500 },
    ],
  },
  {
    enemies: [
      { type: 'OldEmployee', count: 6, interval: 1500 },
      { type: 'TroubleMaker', count: 3, interval: 1500 },
    ],
  },
  {
    enemies: [
      { type: 'BossVP', count: 1, interval: 0 },
      { type: 'OldEmployee', count: 4, interval: 2000 },
    ],
  },
]

export class WaveManager {
  private scene: Phaser.Scene
  private activeEnemies: EnemyBase[] = []
  private pathPoints: PathPoint[]
  private currentWave: number = 0
  private isSpawning: boolean = false
  private onWave3Complete?: () => void
  private onAllWavesComplete?: () => void
  private onDestroyRandomTower?: () => void
  private wave3Completed: boolean = false

  constructor(
    scene: Phaser.Scene,
    onWave3Complete?: () => void,
    onAllWavesComplete?: () => void,
    onDestroyRandomTower?: () => void
  ) {
    this.scene = scene
    this.pathPoints = buildFullPath()
    this.onWave3Complete = onWave3Complete
    this.onAllWavesComplete = onAllWavesComplete
    this.onDestroyRandomTower = onDestroyRandomTower
  }

  get totalWaves(): number {
    return WAVE_CONFIG.length
  }

  startNextWave(): void {
    if (this.isSpawning || this.currentWave >= WAVE_CONFIG.length) return
    const config = WAVE_CONFIG[this.currentWave]
    this.currentWave++
    this.isSpawning = true
    this.spawnWave(config)
  }

  private spawnWave(config: WaveConfig): void {
    // 将所有怪物组展开为按时间排列的生成序列
    const spawnQueue: { type: EnemyGroup['type']; delay: number }[] = []
    for (const group of config.enemies) {
      for (let i = 0; i < group.count; i++) {
        spawnQueue.push({ type: group.type, delay: group.interval * i })
      }
    }
    // 按 delay 升序排列，同时生成
    spawnQueue.sort((a, b) => a.delay - b.delay)

    let completed = 0
    for (const item of spawnQueue) {
      this.scene.time.delayedCall(item.delay, () => {
        this.spawnEnemy(item.type)
        completed++
        if (completed === spawnQueue.length) {
          this.isSpawning = false
        }
      })
    }

    if (spawnQueue.length === 0) this.isSpawning = false
  }

  private spawnEnemy(type: EnemyGroup['type']): EnemyBase {
    let enemy: EnemyBase
    const pts = [...this.pathPoints]

    switch (type) {
      case 'OldEmployee':
        enemy = new OldEmployee(this.scene, pts)
        break
      case 'TroubleMaker':
        enemy = new TroubleMaker(this.scene, pts)
        break
      case 'BossVP':
        enemy = new BossVP(this.scene, pts, this.onDestroyRandomTower)
        break
      default:
        enemy = new FreshGraduate(this.scene, pts)
    }

    // 随机显示语录
    this.scene.time.delayedCall(1000 + Math.random() * 2000, () => {
      if (!enemy.isDead) enemy.showQuote()
    })

    this.activeEnemies.push(enemy)
    return enemy
  }

  update(delta: number): void {
    for (let i = this.activeEnemies.length - 1; i >= 0; i--) {
      const e = this.activeEnemies[i]
      if (e.isDead) {
        this.activeEnemies.splice(i, 1)
        continue
      }
      e.update(delta)
    }

    // 检查第3波完成后触发周报
    if (
      this.currentWave === 3 &&
      !this.isSpawning &&
      this.activeEnemies.length === 0 &&
      !this.wave3Completed
    ) {
      this.wave3Completed = true
      this.onWave3Complete?.()
    }

    // 检查全部波次完成
    if (
      this.currentWave >= WAVE_CONFIG.length &&
      !this.isSpawning &&
      this.activeEnemies.length === 0
    ) {
      this.onAllWavesComplete?.()
    }
  }

  getAllActiveEnemies(): EnemyBase[] {
    return this.activeEnemies
  }

  hasMoreWaves(): boolean {
    return this.currentWave < WAVE_CONFIG.length
  }

  getCurrentWaveNumber(): number {
    return this.currentWave
  }
}