/**
 * 敌人配置
 * Phase 4 数值调整 - 战斗数值平衡
 */

// 敌人配置
export const ENEMY_CONFIG = {
  // ===== Lv.1 敌人 =====
  wild_dog: {
    id: 'wild_dog',
    name: '野狗',
    level: 1,
    baseStats: {
      health: 35,
      attack: 8,
      defense: 2,
      strength: 8,      // 力量，影响攻击
      agility: 6,      // 敏捷，影响闪避（降低EP，提高玩家命中率）
      dexterity: 7,    // 灵巧，影响命中
      intuition: 3,    // 智力，影响AP/EP
      vitality: 8,     // 体质
      speed: 1.2
    },
    derivedStats: {
      ap: 8,
      ep: 6  // 降低EP值，使玩家更容易命中
    },
    expReward: 20,
    skillExpReward: 12,
    drops: [
      { itemId: 'dog_skin', chance: 0.7, count: { min: 1, max: 1 } },
      { itemId: 'healing_herb', chance: 0.15, count: { min: 1, max: 2 } }
    ]
  },

  rat: {
    id: 'rat',
    name: '老鼠',
    level: 1,
    baseStats: {
      health: 20,
      attack: 5,
      defense: 1,
      strength: 5,
      agility: 10,     // 高敏捷，难命中
      dexterity: 6,
      intuition: 2,
      vitality: 5,
      speed: 1.5
    },
    derivedStats: {
      ap: 6,
      ep: 11  // 高闪避，符合老鼠特性
    },
    expReward: 10,
    skillExpReward: 6,
    drops: [
      { itemId: 'healing_herb', chance: 0.2, count: { min: 1, max: 1 } }
    ]
  },

  // ===== Lv.3 敌人 =====
  wolf: {
    id: 'wolf',
    name: '灰狼',
    level: 3,
    baseStats: {
      health: 50,
      attack: 15,
      defense: 5,
      strength: 14,
      agility: 10,
      dexterity: 12,
      intuition: 6,
      vitality: 12,
      speed: 1.3
    },
    derivedStats: {
      ap: 14,
      ep: 11
    },
    expReward: 40,
    skillExpReward: 20,
    drops: [
      { itemId: 'wolf_fang', chance: 0.6, count: { min: 1, max: 2 } },
      { itemId: 'dog_skin', chance: 0.3, count: { min: 1, max: 1 } }
    ]
  },

  bandit: {
    id: 'bandit',
    name: '流浪者',
    level: 3,
    baseStats: {
      health: 60,
      attack: 18,
      defense: 8,
      strength: 16,
      agility: 9,
      dexterity: 14,
      intuition: 8,
      vitality: 15,
      speed: 1.0
    },
    derivedStats: {
      ap: 16,
      ep: 10
    },
    expReward: 50,
    skillExpReward: 25,
    drops: [
      { itemId: 'copper_coin', chance: 0.8, count: { min: 3, max: 8 } },
      { itemId: 'bread', chance: 0.3, count: { min: 1, max: 2 } }
    ]
  },

  // ===== Lv.5 Boss =====
  test_boss: {
    id: 'test_boss',
    name: '流浪狗王',
    level: 5,
    baseStats: {
      health: 250,
      attack: 30,
      defense: 15,
      strength: 25,
      agility: 14,
      dexterity: 20,
      intuition: 12,
      vitality: 25,
      speed: 1.1
    },
    derivedStats: {
      ap: 30,
      ep: 16
    },
    expReward: 200,
    skillExpReward: 80,
    drops: [
      { itemId: 'basement_key', chance: 1.0, count: { min: 1, max: 1 } },
      { itemId: 'dog_skin', chance: 0.5, count: { min: 2, max: 4 } },
      { itemId: 'steel_arm_prosthetic', chance: 0.3, count: { min: 1, max: 1 }, fixedQuality: true }  // 义体掉落
    ],
    isBoss: true
  },

  // ===== Lv.7 敌人 =====
  cave_bat: {
    id: 'cave_bat',
    name: '洞穴蝙蝠',
    level: 7,
    baseStats: {
      health: 40,
      attack: 25,
      defense: 3,
      strength: 20,
      agility: 16,    // 高闪避
      dexterity: 18,
      intuition: 6,
      vitality: 8,
      speed: 1.8
    },
    derivedStats: {
      ap: 22,
      ep: 18  // 高闪避，但不是不可能命中
    },
    expReward: 70,
    skillExpReward: 35,
    drops: [
      { itemId: 'bat_wing', chance: 0.5, count: { min: 1, max: 2 } }
    ]
  },

  // ===== Lv.10 Boss =====
  cave_boss: {
    id: 'cave_boss',
    name: '洞穴领主',
    level: 10,
    baseStats: {
      health: 500,
      attack: 50,
      defense: 25,
      strength: 45,
      agility: 18,
      dexterity: 35,
      intuition: 20,
      vitality: 50,
      speed: 0.9
    },
    derivedStats: {
      ap: 50,
      ep: 22
    },
    expReward: 500,
    skillExpReward: 200,
    drops: [
      { itemId: 'rare_gem', chance: 0.8, count: { min: 1, max: 1 } },
      { itemId: 'iron_sword', chance: 0.3, count: { min: 1, max: 1 } },
      { itemId: 'optical_eye_prosthetic', chance: 0.4, count: { min: 1, max: 1 }, fixedQuality: true },
      { itemId: 'dermal_armor_prosthetic', chance: 0.3, count: { min: 1, max: 1 }, fixedQuality: true }
    ],
    isBoss: true
  }
}

/**
 * 根据区域获取可用的敌人列表
 * @param {String} locationId - 位置ID
 * @returns {Array} 敌人ID列表
 */
export function getEnemiesForLocation(locationId) {
  const locationEnemies = {
    'wild1': ['wild_dog', 'rat'],
    'wild2': ['wolf', 'bandit'],
    'wild3': ['cave_bat', 'wolf'],
    'boss_lair': ['test_boss'],
    'cave_depth': ['cave_bat', 'cave_boss']
  }

  return locationEnemies[locationId] || []
}

/**
 * 获取位置的敌人完整配置
 * @param {String} locationId - 位置ID
 * @returns {Array} 敌人配置对象列表
 */
export function getEnemyConfigsForLocation(locationId) {
  const enemyIds = getEnemiesForLocation(locationId)
  return enemyIds.map(id => ENEMY_CONFIG[id]).filter(Boolean)
}

/**
 * 根据等级获取推荐的敌人
 * @param {Number} playerLevel - 玩家等级
 * @returns {Array} 敌人ID列表
 */
export function getRecommendedEnemies(playerLevel) {
  const enemies = []

  for (const [id, enemy] of Object.entries(ENEMY_CONFIG)) {
    const levelDiff = Math.abs(enemy.level - playerLevel)
    // 推荐等级差在3以内的敌人
    if (levelDiff <= 3 && !enemy.isBoss) {
      enemies.push({ id, levelDiff, enemy })
    }
  }

  // 按等级差排序
  enemies.sort((a, b) => a.levelDiff - b.levelDiff)
  return enemies.map(e => e.id)
}

/**
 * 随机获取位置的一个敌人
 * @param {String} locationId - 位置ID
 * @returns {Object|null} 敌人配置
 */
export function getRandomEnemyForLocation(locationId) {
  const enemyIds = getEnemiesForLocation(locationId)
  if (enemyIds.length === 0) return null

  const randomIndex = Math.floor(Math.random() * enemyIds.length)
  const enemyId = enemyIds[randomIndex]
  return ENEMY_CONFIG[enemyId] || null
}

/**
 * 获取所有敌人列表
 * @returns {Array} 所有敌人ID
 */
export function getAllEnemyIds() {
  return Object.keys(ENEMY_CONFIG)
}

/**
 * 获取Boss列表
 * @returns {Array} Boss敌人ID
 */
export function getBossIds() {
  return Object.entries(ENEMY_CONFIG)
    .filter(([_, config]) => config.isBoss)
    .map(([id, _]) => id)
}