import type { Document } from '@/repositories/Document';
import { fetchFile } from '@/repositories/Document'
import { formatSize, formatUnixDate } from '@/utils';
import { defineStore } from 'pinia';
import { localeIncludes } from 'locale-includes'

type FileData = { id: string, mtime: number, size: number, dir: DirectoryData};
type DirectoryData = {
  [filename: string]: FileData;
};
export type FileStructure = {id: string, mtime: number, size: number, dir: DirectoryData};
type User = {
  isOpenLoginModal: boolean,
  isLoggedIn : boolean,
}

export type DocumentStore = {
  root: FileStructure,
  document: Document[],
  loading: boolean,
  uploadingDocuments: Array<{key: number, name: string, progress: number}>,
  uploadCount: number,
  wsWatch: WebSocket | undefined,
  wsUpload: WebSocket | undefined,
  selectedDocuments: Document[],
  user: User,
  error: string,
}

export const useDocumentStore = defineStore({
  id: 'documents',
  state: (): DocumentStore => ({
    root: {} as FileStructure,
    document: [] as Document[],
    loading: true as boolean,
    uploadingDocuments: [],
    uploadCount: 0 as number,
    wsWatch: undefined,
    wsUpload: undefined,
    selectedDocuments: [] as Document[],
    error: '' as string,
    user: { isLoggedIn: false, isOpenLoginModal: false } as User
  }),

  actions: {
    updateTable(matched: DirectoryData) {
      // Transform data
      const dataMapped  = []
      for (const [name, attr] of Object.entries(matched)) {
        const {id, size, mtime, dir} = attr
        const element: Document = {
          name,
          key: id,
          size,
          sizedisp: formatSize(size),
          mtime,
          modified: formatUnixDate(mtime),
          type: dir === undefined ? 'folder-file' : 'folder',
        }
        dataMapped.push(element)
      }
      // Pre sort directory entries folders first then files, names in natural ordering
      dataMapped.sort((a, b) => a.type === b.type ? a.name.localeCompare(b.name) : a.type === "folder" ? -1 : 1)
      this.document = dataMapped
      this.loading = false;
    },
    setFilter(filter: string){
      function traverseDir(data: FileStructure, path: string){
        if (data.dir === undefined) return
        for (const [name, attr] of Object.entries(data.dir)) {
          const fullname = `${path}/${name}`
          if (localeIncludes(name, filter, {usage: "search", sensitivity: "base"})) {
            matched[fullname.slice(1)] = attr  // No initial slash on name
          }
          traverseDir(attr, fullname)
        }
      }
      this.loading = true
      const matched = {}
      traverseDir(this.root, "")
      this.updateTable(matched)
    },
    setActualDocument(location: string){
      location = decodeURIComponent(location)
      this.loading = true
      let data = this.root
      const actualDirArr = []
      try {
        // Navigate to target folder
        for (const dirname of location.split('/').slice(1)) {
          if (!dirname) continue
          actualDirArr.push(dirname)
          data = data.dir[dirname]
        }
      } catch (error) {
        console.error("Cannot show requested folder", location, actualDirArr.join('/'), error)
      }
      if (data.dir === undefined) {
        // Target folder not available
        this.document = []
        this.loading = false  // ???
        return
      }
      this.updateTable(data.dir)
    },
    async setActualDocumentFile(path: string){
      this.loading = true;
      const file = await fetchFile(path)
      this.document = [file];
      this.loading = false;
    },
    setSelectedDocuments(document: Document[]){
      this.selectedDocuments = document
    },
    deleteDocument(document: Document){
      this.document = this.document.filter(e => document.key !== e.key)
      this.selectedDocuments = this.selectedDocuments.filter(e => document.key !== e.key)
    },
    updateUploadingDocuments(key: number, progress: number){
      for (const d of this.uploadingDocuments) {
        if(d.key === key) d.progress = progress
      }
    },
    pushUploadingDocuments(name: string){
      this.uploadCount++;
      const document = {
        key: this.uploadCount,
        name: name,
        progress: 0
      }
      this.uploadingDocuments.push(document)
      return document
    },
    deleteUploadingDocument(key: number){
      this.uploadingDocuments = this.uploadingDocuments.filter((e)=> e.key !== key)
    },
    getNextDocumentInRoute(direction: number, path: string){
      const locations = path.split('/').slice(1)
      locations.pop()
      let data = this.root
      const actualDirArr = []
      // Get data target location
      locations.forEach(location => {
        // location = decodeURIComponent(location)
        if(data && data.dir){
          for (const key in data.dir) {
            if(key === location) data  = data.dir[key]
          }
        }
      })
      //Store in a temporary array
      for (const key in data.dir) {
        actualDirArr.push({
          name: key,
          content: data.dir[key]
        })
      }
      const actualFileName = decodeURIComponent(this.mainDocument[0].name).split('/').pop()
      let index = actualDirArr.findIndex(e => e.name === actualFileName)

      if(index < 1 && direction === -1 ){
        index = actualDirArr.length -1
      }else if(index >= actualDirArr.length - 1 && direction === 1){
        index = 0
      }else {
        index = index + direction
      }
      return actualDirArr[index].name
    },
    updateModified() {
      for (const d of this.document) {
        if ("mtime" in d) d.modified = formatUnixDate(d.mtime)
      }
    },
  },
  getters: {
    mainDocument(): Document[] {
      return this.document;
    },
    rootSize(): number | undefined {
      if(this.root) return this.root.size
    },
    rootMain(): DirectoryData | undefined {
      if(this.root) return this.root.dir
    },
    isUserLogged(): boolean{
      return this.user.isLoggedIn
    }
  },
});