import { ElMessage } from 'element-plus'
import { IBasicBlog, IBlog, IBlogComment, IBlogNestedComment } from '@/types/blog.ts'
import dayjs from 'dayjs'

/**
 * 粒子特效
 */
export const particlesOptions = {
  background: {
    color: {}
  },
  fpsLimit: 60,
  interactivity: {
    events: {
      // 点击时事件
      onClick: {
        enable: false,
        mode: 'push' // 可用的click模式有: "push", "remove", "repulse", "bubble"。
      },
      // 悬浮时事件
      onHover: {
        enable: true,
        mode: 'grab' // 可用的hover模式有: "grab", "repulse", "bubble"。
      },
      resize: true
    },
    modes: {
      bubble: {
        distance: 400,
        duration: 2,
        opacity: 0.8,
        size: 40
      },
      push: {
        quantity: 4
      },
      repulse: {
        distance: 200,
        duration: 0.4
      }
    }
  },
  particles: {
    color: {
      value: '#000000'
    },
    links: {
      color: '#000000', // '#dedede'。线条颜色。
      distance: 150, // 线条长度
      enable: true, // 是否有线条
      opacity: 0.5, // 线条透明度。
      width: 1 // 线条宽度。
    },
    collisions: {
      enable: false
    },
    move: {
      direction: 'none',
      enable: true,
      outMode: 'bounce',
      random: false,
      speed: 4, // 粒子运动速度。
      straight: false
    },
    number: {
      density: {
        enable: true,
        area: 800
      },
      value: 50 // 粒子数量。
    },
    opacity: {
      value: 0.1 // 粒子透明度。
    },
    shape: {
      type: 'edge' // 可用的粒子外观类型有："circle","edge","triangle", "polygon","star"
    },
    size: {
      random: true,
      value: 5
    }
  },
  detectRetina: true
}

/**
 * 创建鼠标点击爱心特效
 * @param leftPosition 左侧位置
 * @param topPosition 右侧位置
 */
export const createHeartDiv = (leftPosition: number, topPosition: number) => {
  const heart = document.createElement('div')
  document.body.appendChild(heart)
  heart.classList.add('heart')
  heart.style.left = `${leftPosition}px`
  heart.style.top = `${topPosition}px`
  heart.style.animation = 'move 1s normal forwards'
  setTimeout(() => {
    document.body.removeChild(heart)
  }, 1000)
  heart.style.backgroundColor = `rgb(${Math.random() * 255},${Math.random() * 255},${Math.random() * 255})`
}

/**
 * 校验博客上传图片
 * @param files 文件
 */
export const validateBlogImage = (files: File[]): boolean => {
  if (files.length > 1) {
    ElMessage.error('请上传1张图片')
    return false
  }

  const uploadFile = files[0]
  const fileTypeList = ['png', 'jpg', 'jpeg', 'bmp', 'gif', 'webp', 'psd', 'svg', 'tiff']
  if (fileTypeList.indexOf(uploadFile.type.toLowerCase()) !== -1) {
    ElMessage.error('请上传图片文件')
    return false
  }

  const maxFileSize = 5 * 1024 * 1024
  if (uploadFile.size > maxFileSize) {
    ElMessage.error('请上传5M以内的图片')
    return false
  }

  return true
}

export const formatBlogWordCount = (count: number): string => {
  if (!count) {
    return ''
  }

  if (count < 10000) return count.toString()

  const units = ['万', '亿', '兆']
  let unitIndex = -1

  while (count >= 10000 && unitIndex < units.length - 1) {
    count /= 10000
    unitIndex++
  }

  // 保留两位小数，并移除末尾可能的零
  const formattedNum = count.toFixed(2).replace(/\.?0+$/, '')
  return `${formattedNum}${units[unitIndex]}`
}

export const getBlogRunTotalTime = (startDateStr: string):string => {
  const startDate = dayjs(startDateStr)
  const endDate = dayjs() // 当前时间

  // 计算完整时间间隔（年、月、日）
  const years = endDate.diff(startDate, 'year')
  const months = endDate.diff(startDate.add(years, 'year'), 'month')
  const days = endDate.diff(startDate.add(years, 'year').add(months, 'month'), 'day')

  return `${years}年${months}月${days}日`
}

export const getBasicBlog = (blog: IBlog): IBasicBlog => {
  return {
    category: blog.category,
    isGreat: blog.isGreat,
    readDuration: blog.readDuration,
    topValue: blog.topValue,
    wordCount: blog.wordCount,
    visitCount: blog.visitCount,
    createTime: blog.createTime,
    updateTime: blog.updateTime
  }
}

// 扁平化数据转两层嵌套结构
export function flattenToTwoLevel(comments: IBlogComment[]): IBlogNestedComment[] {
  // 创建评论映射表，快速查找评论
  const commentMap = new Map<number, IBlogComment>()
  comments.forEach((comment) => commentMap.set(comment.id, comment))

  // 结果数组
  const result: IBlogNestedComment[] = []

  // 遍历所有评论，构建两层结构
  comments.forEach((comment) => {
    if (comment.parentId === 0) {
      // 顶层评论
      const replies = comments.filter((reply) => reply.parentId === comment.id)
      result.push({ comment, replies })
    }
  })

  return result
}