import { AnimationState } from '../../../types';
import type { StateFunctionRuntimeSource } from '../types';

/**
 * battle_feint_step
 *
 * 战斗中的机动切入动作。它把重点放在虚晃、变线与抢身位，
 * 让战斗叙事更偏向灵活切入而不是硬扛伤害。
 */
export const BATTLE_FEINT_STEP_FUNCTION_SOURCE: StateFunctionRuntimeSource = {
  definition: {
    id: 'battle_feint_step',
    state: 'battle',
    category: 'battle',
    text: '战斗：虚晃切入',
    description:
      '通过假动作和变线切入制造破绽，偏向机动技能，伤害适中但更安全。',
    visual: {
      playerAnimation: AnimationState.SKILL1_JUMP,
      playerMoveMeters: 0,
      playerOffsetY: 0,
      playerFacing: 'right',
      scrollWorld: false,
      monsterActionTemplate: '{monster}被晃得节奏发虚，动作明显迟疑',
      monsterAnimation: 'attack',
      monsterMoveMeters: 0,
    },
    effect: {
      damageMultiplier: 1.05,
      incomingDamageMultiplier: 0.8,
      skillWeights: {
        mobility: 5,
        burst: 2.4,
        steady: 2,
        finisher: 1.4,
        projectile: 1.2,
      },
    },
  },
  promptDescription:
    '通过虚晃、变线或切步逼近面前敌人，文案可以自然改写，但仍要保持这是机动切入。',
  documentation: {
    id: 'battle_feint_step',
    domain: 'state',
    title: '战斗：虚晃切入',
    source: 'src/data/functionCatalog/state/battleFeintStep.ts',
    summary: '通过身位变化制造安全破绽的机动战斗 function。',
    detailedDescription:
      '它适合把回合讲成“先骗、再切、再进”的过程，让主角依靠节奏误导和位移逼出敌人的迟疑。',
    trigger: '仅在 battle 状态下参与候选。',
    execution:
      '小幅提高输出，显著降低 incomingDamageMultiplier，并把技能权重偏到 mobility，让系统更愿意选机动型动作。',
    result:
      '适合想稳一点地逼近敌人、减少硬吃反击，或需要围绕灵巧角色塑造打法时使用。',
    state: 'battle',
    category: 'battle',
    active: true,
  },
  runtime: {
    buildSuggestedActionText({ metrics, environment }) {
      if (metrics.monsterHpRatio <= 0.35) {
        return `虚晃切进去收掉${environment.monsterName}`;
      }
      return `借假动作切进${environment.monsterName}身前`;
    },
    getPriority({ metrics }) {
      return metrics.monsterHpRatio <= 0.5 ? 5 : 3;
    },
  },
};