// 神明系統 - 與 API 整合
import { apiService } from './api-service.js'
import { JIAOBEI_CONFIG } from '../data/jiaobei-config.js'

export class TempleSystem {
  constructor(petSystem, api = apiService, achievementSystem = null) {
    this.petSystem = petSystem
    this.api = api
    this.achievementSystem = achievementSystem
    this.deities = []
  }

  // 初始化（從 API 載入神明資料）
  async initialize() {
    try {
      this.deities = await this.api.getDeities()
      console.log(`[TempleSystem] 載入 ${this.deities.length} 位神明`)
    } catch (error) {
      console.error('[TempleSystem] 載入神明失敗:', error)
      // 降級到本地載入
      const { DEITIES } = await import('../data/deities.js')
      this.deities = DEITIES
    }
  }

  // 獲取所有神明
  getDeities() {
    return [...this.deities]
  }

  // 獲取當前神明
  getCurrentDeity() {
    const state = this.petSystem.getState()
    return this.deities.find(d => d.id === state.currentDeityId) || this.deities[0]
  }

  // 切換神明
  async switchDeity(deityId) {
    const deity = this.deities.find(d => d.id === deityId)
    if (!deity) {
      return { success: false, message: '找不到該神明' }
    }

    await this.petSystem.updateState({ currentDeityId: deityId })

    // 重新計算屬性（新神明的加成）
    this.petSystem.calculateCombatStats()

    // 同步 effective 属性到状态
    await this.petSystem.updateState({
      effectiveStr: this.petSystem.state.effectiveStr,
      effectiveInt: this.petSystem.state.effectiveInt,
      effectiveDex: this.petSystem.state.effectiveDex,
      effectiveLuck: this.petSystem.state.effectiveLuck
    })

    return { success: true, deity }
  }

  // 祈福（每日上限 3 次）
  async pray() {
    const state = this.petSystem.getState()

    if (state.dailyPrayerCount >= 3) {
      return { success: false, message: '今日祈福次數已用完' }
    }

    try {
      const result = await this.api.prayToDeity({
        deityId: state.currentDeityId,
        petState: state
      })

      // 更新好感度
      const currentFavor = state.deityFavors[state.currentDeityId] || 0
      const newFavor = Math.min(100, currentFavor + result.favorIncrease)

      // 檢查是否等級提升或達到滿級
      const deity = this.getCurrentDeity()
      const oldLevel = deity.favorLevelBuffs ? Math.floor(currentFavor / deity.favorLevelBuffs.interval) : 0
      const newLevel = deity.favorLevelBuffs ? Math.floor(newFavor / deity.favorLevelBuffs.interval) : 0
      const levelUp = newLevel > oldLevel
      const reachedMax = currentFavor < 100 && newFavor >= 100

      await this.petSystem.updateState({
        deityFavors: {
          ...state.deityFavors,
          [state.currentDeityId]: newFavor
        },
        dailyPrayerCount: state.dailyPrayerCount + 1
      })

      // 重新計算屬性（好感度變化影響加成）
      this.petSystem.calculateCombatStats()

      // 同步 effective 属性到状态
      await this.petSystem.updateState({
        effectiveStr: this.petSystem.state.effectiveStr,
        effectiveInt: this.petSystem.state.effectiveInt,
        effectiveDex: this.petSystem.state.effectiveDex,
        effectiveLuck: this.petSystem.state.effectiveLuck
      })

      // 獲取神明對話
      const dialogue = deity.dialogues[Math.floor(Math.random() * deity.dialogues.length)]

      // 記錄到成就系統
      if (this.achievementSystem) {
        await this.achievementSystem.recordAction('pray')
        // 檢查神明好感度成就
        await this.achievementSystem.checkAndUnlockAchievements()
      }

      return {
        success: true,
        favorIncrease: result.favorIncrease,
        newFavor,
        oldLevel,
        newLevel,
        levelUp,
        reachedMax,
        dialogue,
        message: result.message,
        deity
      }
    } catch (error) {
      console.error('[TempleSystem] 祈福失敗:', error)
      return { success: false, message: '祈福失敗' }
    }
  }

  // 獲取好感度星級（每 20 點一星）
  getFavorStars(deityId) {
    if (!deityId) return '☆☆☆☆☆'
    const state = this.petSystem.getState()
    if (!state || !state.deityFavors) return '☆☆☆☆☆'
    const favor = state.deityFavors[deityId] || 0
    const stars = Math.floor(favor / 20)
    return '★'.repeat(stars) + '☆'.repeat(5 - stars)
  }

  // 抽籤

  // 求籤（需要三聖筊驗證）
  async drawLot(lotType = 'guanyin_100') {
    const state = this.petSystem.getState()
    const deity = this.getCurrentDeity()

    // 檢查神明是否支持此簽詩
    if (!deity.lotTypes || !deity.lotTypes.includes(lotType)) {
      return {
        success: false,
        message: `${deity.name}不提供${lotType}簽詩`
      }
    }

    try {
      // 載入簽詩資料
      const lots = await this.loadLots(lotType)

      // 隨機抽一支簽
      const randomIndex = Math.floor(Math.random() * lots.length)
      const lot = lots[randomIndex]

      // 記錄到成就系統
      if (this.achievementSystem) {
        await this.achievementSystem.recordAction('drawFortune')
        await this.achievementSystem.checkAndUnlockAchievements()
      }

      // 返回需要擲筊驗證的狀態
      return {
        success: true,
        needVerification: true,
        lot,
        lotType,
        deity: deity.name,
        verificationCount: 0,
        requiredHoly: 3  // 需要三個聖筊
      }
    } catch (error) {
      console.error('[TempleSystem] 抽籤失敗:', error)
      return { success: false, message: '抽籤失敗' }
    }
  }

  // 驗證簽詩（擲筊確認）
  async verifyLot(lotData) {
    // 擲筊
    const jiaobeiResult = await this.throwJiaobei(`求問第${lotData.lot.no}籤`)

    if (jiaobeiResult.result === 'holy') {
      // 聖筊
      const newCount = (lotData.verificationCount || 0) + 1

      if (newCount >= lotData.requiredHoly) {
        // 三聖筊，可以解簽
        return {
          success: true,
          verified: true,
          lot: lotData.lot,
          jiaobeiResult,
          message: `三聖筊！${lotData.deity}允准解籤`
        }
      } else {
        // 還需要更多聖筊
        return {
          success: true,
          verified: false,
          needMore: true,
          verificationCount: newCount,
          requiredHoly: lotData.requiredHoly,
          lot: lotData.lot,
          jiaobeiResult,
          message: `第${newCount}個聖筊，還需${lotData.requiredHoly - newCount}個聖筊`
        }
      }
    } else {
      // 笑筊或陰筊，需要重抽
      return {
        success: true,
        verified: false,
        needRedraw: true,
        jiaobeiResult,
        message: `${jiaobeiResult.result === 'laughing' ? '笑筊' : '陰筊'}，請重新抽籤`
      }
    }
  }

  // 載入簽詩資料
  async loadLots(lotType) {
    if (lotType === 'guanyin_100') {
      const data = await import('../data/guanyin_100_lots.json')
      return data.default || data
    }
    throw new Error(`未知的簽詩類型: ${lotType}`)
  }

  // 擲筊
  async throwJiaobei(question = '') {
    const state = this.petSystem.getState()
    const deity = this.getCurrentDeity()

    try {
      // 計算實際概率
      const probabilities = this.calculateJiaobeiProbabilities()

      // 嘗試使用 API
      const apiResult = await this.api.throwJiaobei({
        petId: state.id,
        deityId: deity.id,
        question,
        probabilities
      })

      // 如果 API 回傳本地降級標記，使用本地邏輯
      if (!apiResult.localFallback) {
        return apiResult
      }
    } catch (error) {
      console.warn('[TempleSystem] 擲筊 API 失敗，使用本地邏輯', error)
    }

    // 本地邏輯
    const probabilities = this.calculateJiaobeiProbabilities()
    const result = this.rollJiaobei(probabilities)

    return {
      success: true,
      result,
      deity: deity.name,
      message: result === 'holy' ? '聖筊' : result === 'laughing' ? '笑筊' : '陰筊',
      probabilities
    }
  }

  // 取得當前神明可用的 lotTypes（可能有多個）
  getCurrentDeityLotTypes() {
    const deity = this.getCurrentDeity()
    // 若未設定則回傳空陣列，避免錯誤
    return deity?.lotTypes ?? []
  }

  // 計算擲筊概率（考慮運勢和好感度）
  calculateJiaobeiProbabilities() {
    const state = this.petSystem.getState()
    const deity = this.getCurrentDeity()

    // 基礎概率
    let { holy, laughing, negative } = JIAOBEI_CONFIG.baseProbability

    // 運勢影響：增加聖筊概率
    const luck = state.luck || 10
    const luckBonus = Math.min(
      luck * JIAOBEI_CONFIG.luckModifier,
      JIAOBEI_CONFIG.maxModifier
    )

    // 好感度影響：減少陰筊概率
    const favor = state.deityFavors[deity.id] || 0
    const favorBonus = Math.min(
      favor * JIAOBEI_CONFIG.favorModifier,
      JIAOBEI_CONFIG.maxModifier
    )

    // 調整概率
    holy += luckBonus + favorBonus / 2
    negative -= favorBonus
    laughing -= luckBonus / 2

    // 確保非負
    holy = Math.max(0.1, holy)
    laughing = Math.max(0.1, laughing)
    negative = Math.max(0.1, negative)

    // 歸一化（確保總和為1）
    const total = holy + laughing + negative

    return {
      holy: holy / total,
      laughing: laughing / total,
      negative: negative / total
    }
  }

  // 投擲筊杯（隨機結果）
  rollJiaobei(probabilities) {
    const rand = Math.random()

    if (rand < probabilities.holy) {
      return 'holy'
    } else if (rand < probabilities.holy + probabilities.laughing) {
      return 'laughing'
    } else {
      return 'negative'
    }
  }

  // Debug: 重置每日祈福次數
  async debugResetDailyPrayer() {
    console.log('[Debug] 重置每日祈福次數')
    await this.petSystem.updateState({ dailyPrayerCount: 0 })
    return { success: true, message: '已重置祈福次數' }
  }
}