/**
 * 生命事件服务
 * 处理生命事件的增删改查
 */

import { get, post, put, del } from './request.js'
import { streamAiScene } from './aiRuntime.js'

export const getEventList = async () => {
  const response = await get('/lifeEvent/list')
  return response
}

export const getEventPage = async ({ pageNum = 1, pageSize = 10 }) => {
  const response = await get('/lifeEvent/page', { pageNum, pageSize })
  return response
}

export const getEventById = async (id) => {
  const response = await get('/lifeEvent/detail', { id })
  return response
}

export const createEvent = async (eventData) => {
  const requestData = transformToBackendFormat(eventData)
  const response = await post('/lifeEvent/create', requestData)
  return response
}

export const updateEvent = async (eventData) => {
  const requestData = transformToBackendFormat(eventData)
  const response = await put('/lifeEvent/update', requestData)
  return response
}

export const deleteEvent = async (id) => {
  const response = await del('/lifeEvent/delete', { id })
  return response
}

export const assistEventWriting = async (eventData = {}, callbacks = {}) => {
  const result = await streamAiScene({
    sceneCode: 'life_healing',
    inputs: {
      mode: 'life_event_assist',
      prompt: `请帮我优化这段人生事件记录，保留真实细节，让表达更清晰温柔。\n标题：${eventData.title || ''}\n时间：${eventData.time || eventData.eventDateText || ''}\n内容：${eventData.content || ''}`,
      ...eventData
    },
    ...callbacks
  })
  return {
    data: {
      content: result.output,
      tags: eventData.tags || []
    }
  }
}

export const chatAboutEvent = async (eventData = {}) => {
  return post('/lifeEvent/chat-placeholder', eventData)
}

export const shareEvent = async (eventData = {}) => {
  return post('/lifeEvent/share-placeholder', eventData)
}

/**
 * 切换人生事件收藏状态（收藏/取消收藏）
 * @param {string} eventId 事件ID
 * @returns {Promise<{success: boolean, isFavorited: boolean}>}
 */
export const toggleFavoriteEvent = async (eventId) => {
  const res = await post('/lifeEvent/favorite/toggle', { eventId })
  return {
    success: true,
    isFavorited: res.data?.isFavorited ?? false,
    favoriteTime: res.data?.favoriteTime ?? null
  }
}

/**
 * 检查人生事件是否已收藏
 * @param {string} eventId 事件ID
 * @returns {Promise<boolean>}
 */
export const checkFavoriteEvent = async (eventId) => {
  const res = await get('/lifeEvent/favorite/check', { eventId })
  return res.data?.isFavorited ?? false
}

const transformToBackendFormat = (frontendData) => {
  const {
    id,
    title,
    time,
    timeMode = 'date',
    eventDateText,
    endTime,
    content,
    aiFeedback,
    eventType = 'daily_log',
    emotionType,
    emotionScore,
    tags
  } = frontendData

  return {
    id,
    title,
    eventDate: time,
    timeMode,
    eventDateText: eventDateText || time,
    eventEndDate: timeMode === 'range' ? endTime : null,
    content,
    aiReply: aiFeedback,
    eventType,
    emotionType,
    emotionScore,
    tags
  }
}

export const transformToFrontendFormat = (backendData) => {
  if (!backendData) return null

  const {
    id,
    userId,
    title,
    eventDate,
    timeMode,
    eventDateText,
    eventEndDate,
    content,
    aiReply,
    eventType,
    emotionType,
    emotionScore,
    tags,
    createTime
  } = backendData

  return {
    id,
    userId,
    title: title || '',
    time: eventDate ? eventDate.split('T')[0] : '',
    timeMode: timeMode || 'date',
    eventDateText: eventDateText || (eventDate ? eventDate.split('T')[0] : ''),
    endTime: eventEndDate ? eventEndDate.split('T')[0] : '',
    content: content || '',
    aiFeedback: aiReply || '',
    eventType: eventType || 'daily_log',
    emotionType,
    emotionScore,
    tags: tags || [],
    createTime
  }
}

export const transformListToFrontend = (backendList) => {
  if (!Array.isArray(backendList)) return []
  return backendList.map(transformToFrontendFormat)
}

export default {
  getEventList,
  getEventPage,
  getEventById,
  createEvent,
  updateEvent,
  deleteEvent,
  assistEventWriting,
  chatAboutEvent,
  shareEvent,
  toggleFavoriteEvent,
  checkFavoriteEvent,
  transformToFrontendFormat,
  transformListToFrontend
}