/**
 * 即时多巴胺反馈触发引擎
 * 判定何时触发什么反馈，协调 Toast/Milestone 组件
 */

import { getRandomText, getIcon, getSound, formatText } from './feedback-presets.js'

// 存储外部注册的回调
var _toastCallback = null
var _celebrationCallback = null

/**
 * 注册反馈组件回调
 * @param {Function} toastFn - 接收 {text, icon, sound} 触发 Toast
 * @param {Function} celebrationFn - 接收 {title, subtitle} 触发全屏庆祝
 */
function registerCallbacks(toastFn, celebrationFn) {
  _toastCallback = toastFn
  _celebrationCallback = celebrationFn
}

/**
 * 触发即时反馈（L1）
 * @param {string} scene - 场景编码: micro_action/checkin/exercise/sleep/water/milestone_7/first_use/comeback
 * @param {Object} vars - 模板变量，如 {minutes: 20}
 */
function trigger(scene, vars) {
  var text = getRandomText(scene)
  var icon = getIcon(scene)
  var sound = getSound(scene)
  var formatted = formatText(text, vars)

  // 判断是否为里程碑（需要全屏庆祝）
  if (scene && scene.indexOf('milestone_') === 0) {
    var days = scene.replace('milestone_', '')
    var titles = {
      '3': '连续3天！',
      '7': '连续一周！',
      '14': '连续14天！',
      '21': '连续21天！',
      '30': '连续一个月！'
    }
    if (_celebrationCallback) {
      _celebrationCallback({
        title: titles[days] || '里程碑达成！',
        subtitle: formatted
      })
    }
  } else {
    // 普通反馈：Toast
    if (_toastCallback) {
      _toastCallback({
        text: formatted,
        icon: icon,
        sound: sound
      })
    }
  }
}

export { registerCallbacks, trigger }