import { Component, OnInit } from '@angular/core';
import { ActivatedRoute } from '@angular/router';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
import { cloneFilterRules, FilterRule } from 'src/app/data/filter-rule';
import { FILTER_CORRESPONDENT, FILTER_DOCUMENT_TYPE, FILTER_HAS_TAG, FILTER_RULE_TYPES } from 'src/app/data/filter-rule-type';
import { PaperlessCorrespondent } from 'src/app/data/paperless-correspondent';
import { PaperlessDocumentType } from 'src/app/data/paperless-document-type';
import { PaperlessTag } from 'src/app/data/paperless-tag';
import { SavedViewConfig } from 'src/app/data/saved-view-config';
import { DocumentListViewService } from 'src/app/services/document-list-view.service';
import { DOCUMENT_SORT_FIELDS } from 'src/app/services/rest/document.service';
import { SavedViewConfigService } from 'src/app/services/saved-view-config.service';
import { Toast, ToastService } from 'src/app/services/toast.service';
import { SaveViewConfigDialogComponent } from './save-view-config-dialog/save-view-config-dialog.component';

@Component({
  selector: 'app-document-list',
  templateUrl: './document-list.component.html',
  styleUrls: ['./document-list.component.scss']
})
export class DocumentListComponent implements OnInit {

  constructor(
    public list: DocumentListViewService,
    public savedViewConfigService: SavedViewConfigService,
    public route: ActivatedRoute,
    private toastService: ToastService,
    public modalService: NgbModal) { }

  displayMode = 'smallCards' // largeCards, smallCards, details

  filterRules: FilterRule[] = []
  showFilter = false

  getTitle() {
    return this.list.savedViewTitle || "Documents"
  }

  getSortFields() {
    return DOCUMENT_SORT_FIELDS
  }

  saveDisplayMode() {
    localStorage.setItem('document-list:displayMode', this.displayMode)
  }

  ngOnInit(): void {
    if (localStorage.getItem('document-list:displayMode') != null) {
      this.displayMode = localStorage.getItem('document-list:displayMode')
    }
    this.route.paramMap.subscribe(params => {
      if (params.has('id')) {
        this.list.savedView = this.savedViewConfigService.getConfig(params.get('id'))
      } else {
        this.list.savedView = null
      }
      this.filterRules = this.list.filterRules
      this.showFilter = this.filterRules.length > 0
      // prevents temporarily visible results from previous views
      this.list.documents = []
      this.list.reload()
    })
  }

  applyFilterRules() {
    this.list.filterRules = this.filterRules
  }

  loadViewConfig(config: SavedViewConfig) {
    this.filterRules = cloneFilterRules(config.filterRules)
    this.list.load(config)
  }

  saveViewConfig() {
    this.savedViewConfigService.updateConfig(this.list.savedView)
    this.toastService.showToast(Toast.make("Information", `View "${this.list.savedView.title}" saved successfully.`))
  }

  saveViewConfigAs() {
    let modal = this.modalService.open(SaveViewConfigDialogComponent, {backdrop: 'static'})
    modal.componentInstance.saveClicked.subscribe(formValue => {
      this.savedViewConfigService.newConfig({
        title: formValue.title,
        showInDashboard: formValue.showInDashboard,
        showInSideBar: formValue.showInSideBar,
        filterRules: this.list.filterRules,
        sortDirection: this.list.sortDirection,
        sortField: this.list.sortField
      })
      modal.close()
    })
  }

  filterByTag(t: PaperlessTag) {
    let filterRules = this.list.filterRules
    if (filterRules.find(rule => rule.type.id == FILTER_HAS_TAG && rule.value == t.id)) {
      return
    }

    filterRules.push({type: FILTER_RULE_TYPES.find(t => t.id == FILTER_HAS_TAG), value: t.id})
    this.filterRules = filterRules
    this.applyFilterRules()
  }

  filterByCorrespondent(c: PaperlessCorrespondent) {
    let filterRules = this.list.filterRules
    let existing_rule = filterRules.find(rule => rule.type.id == FILTER_CORRESPONDENT)
    if (existing_rule && existing_rule.value == c.id) {
      return
    } else if (existing_rule) {
      existing_rule.value = c.id
    } else {
      filterRules.push({type: FILTER_RULE_TYPES.find(t => t.id == FILTER_CORRESPONDENT), value: c.id})
    }
    this.filterRules = filterRules
    this.applyFilterRules()
  }

  filterByDocumentType(dt: PaperlessDocumentType) {
    let filterRules = this.list.filterRules
    let existing_rule = filterRules.find(rule => rule.type.id == FILTER_DOCUMENT_TYPE)
    if (existing_rule && existing_rule.value == dt.id) {
      return
    } else if (existing_rule) {
      existing_rule.value = dt.id
    } else {
      filterRules.push({type: FILTER_RULE_TYPES.find(t => t.id == FILTER_DOCUMENT_TYPE), value: dt.id})
    }
    this.filterRules = filterRules
    this.applyFilterRules()
  }

}