import { Article, Post } from '../config/baseConfig'
import { useData, withBase } from 'vitepress'
export function getTags(post: Post[]) {
  let data: Array<string> = []
  for (let index = 0; index < post.length; index++) {
    const element = post[index]
    const tags = element.frontMatter.tags
    if (tags && tags.length > 0) {
      tags.forEach((item) => {
        data.push(item)
      })
    }
  }
  // data = [...new Set(data)];
  return data.sort()
}
export function initTags(post: Post[]) {
  const data: any = {}
  for (let index = 0; index < post.length; index++) {
    const element = post[index]
    const tags = element.frontMatter.tags
    if (tags && tags.length > 0) {
      tags.forEach((item) => {
        if (data[item]) {
          data[item].push(element)
        } else {
          data[item] = []
          data[item].push(element)
        }
      })
    }
  }
  return data
}
export function searchData(post: Post[], keyword: string) {
  const data: Array<Article> = []
  for (let index = 0; index < post.length; index++) {
    const element = post[index]
    let hasArticle = false
    if (element.frontMatter.title.includes(keyword)) {
      hasArticle = true
    }
    if (element.frontMatter.category.includes(keyword)) {
      hasArticle = true
    }
    if (element.frontMatter.description.includes(keyword)) {
      hasArticle = true
    }
    const tags = element.frontMatter.tags
    if (tags && tags.length > 0) {
      tags.forEach((tag) => {
        if (tag && tag.includes(keyword)) {
          hasArticle = true
        }
      })
    }
    if (hasArticle) {
      data.push(element)
    }
  }
  return data
}
export function initLists(post: Post[], category: string) {
  const data: Array<Article> = []
  for (let index = 0; index < post.length; index++) {
    const element = post[index]
    if (element.frontMatter.category == category) {
      data.push(element)
    }
  }
  return data
}
export function useYearSort(post: Post[]) {
  const data = []
  let year = '0'
  let num = -1
  for (let index = 0; index < post.length; index++) {
    const element = post[index]
    if (element.frontMatter.date) {
      const y = element.frontMatter.date.split('-')[0]
      if (y === year) {
        data[num].push(element)
      } else {
        num++
        data[num] = [] as any
        data[num].push(element)
        year = y
      }
    }
  }
  return data
}

export function getWithBase(url: string) {
  let baseUrl = url
  const { theme } = useData()
  if (theme.value.docRoot) {
    baseUrl = url.replace('/' + theme.value.docRoot + '/', '')
  }
  return withBase(baseUrl)
}