import { ChangeDetectorRef, Component, OnInit } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { ActivatedRoute, RouterLink } from '@angular/router';
import { Danka } from '../../models/danka';
import { Family } from '../../models/family';
import { Kakocho } from '../../models/kakocho';
import { DankaService } from '../../services/dankaService';
import { FamilyService } from '../../services/family-service';
import { KakochoService } from '../../services/kakocho-service';
import { AppHeader } from '../../share/header/app-header';
import { AppSideMenu } from '../../share/side-menu/app-side-menu';

@Component({
  selector: 'app-search',
  imports: [AppHeader, AppSideMenu, FormsModule, RouterLink],
  templateUrl: './search.html',
  styleUrl: './search.scss',
})
export class Search implements OnInit{
  searchKeyword = '';
  selectedSearchType = 'all';
  searchTypeFilters = [
    { label: 'すべて', value: 'all' },
    { label: '檀家（世帯）', value: 'danka' },
    { label: '家族', value: 'family' },
    { label: '過去帳', value: 'kakocho' },
  ];
  dankaResults: Danka[] = [];
  familyResults: Family[] = [];
  kakochoResults: Kakocho[] = [];
  totalResultCount = 0;
  private searchTimer?: ReturnType<typeof setTimeout>;
  private searchRequestId = 0;

  constructor(
    private dankaService: DankaService,
    private familyService: FamilyService,
    private kakochoService: KakochoService,
    private route: ActivatedRoute,
    private cdr: ChangeDetectorRef,
  ) { }

  ngOnInit(): void {
    const keyword = this.route.snapshot.queryParamMap.get('keyword');

    if (keyword) {
      this.searchKeyword = keyword;
      this.submitSearch();
    }
  }

  //　フィルタータブの選択処理
  changeSearchType(searchType: string): void {
    this.selectedSearchType = searchType;
    this.submitSearch();
  }

  onSearchKeywordChange(keyword: string): void {
    this.searchKeyword = keyword;

    if (this.searchTimer) {
      clearTimeout(this.searchTimer);
    }

    this.searchTimer = setTimeout(() => {
      this.searchAll();
    }, 250);
  }

  submitSearch(): void {
    if (this.searchTimer) {
      clearTimeout(this.searchTimer);
    }

    this.searchAll();
  }

  //　全検索の処理
  async searchAll(): Promise<void> {
    const requestId = ++this.searchRequestId;
    const keyword = this.searchKeyword.trim();
    const searchType = this.selectedSearchType;

    if (keyword === '') {
      this.setSearchResults([], [], [], requestId);
      return;
    }

    const [dankaList, familyList, kakochoList] = await Promise.all([
      this.dankaService.getDankaList(),
      this.familyService.getFamilyList(),
      this.kakochoService.getKakochoList(),
    ]);

    if (requestId !== this.searchRequestId) {
      return;
    }

    let dankaResults: Danka[] = [];
    let familyResults: Family[] = [];
    let kakochoResults: Kakocho[] = [];

    // 檀家検索
    if (searchType === 'all' || searchType === 'danka') {
      dankaResults = dankaList.filter((danka) =>
        this.includesKeyword(danka.householdName, keyword) ||
        this.includesKeyword(danka.householder, keyword) ||
        this.includesKeyword(danka.postalCode, keyword) ||
        this.includesKeyword(danka.address, keyword) ||
        this.getPhones(danka).some(
          (phone) =>
            this.includesKeyword(phone.tel, keyword) ||
            this.includesKeyword(phone.note, keyword)
        )
      );
    }

    // 家族検索
    if (searchType === 'all' || searchType === 'family') {
      familyResults = familyList.filter((family) =>
        this.includesKeyword(family.name, keyword) ||
        this.includesKeyword(family.furigana, keyword) ||
        this.includesKeyword(family.relationship, keyword) ||
        this.includesKeyword(family.birthDate, keyword) ||
        this.includesKeyword(family.note, keyword)
      );
    }

    // 過去帳検索
    if (searchType === 'all' || searchType === 'kakocho') {
      kakochoResults = kakochoList.filter((kakocho) =>
        this.includesKeyword(kakocho.name, keyword) ||
        this.includesKeyword(kakocho.furigana, keyword) ||
        this.includesKeyword(kakocho.relationship, keyword) ||
        this.includesKeyword(kakocho.kaimyo, keyword) ||
        this.includesKeyword(kakocho.deathDate, keyword) ||
        this.includesKeyword(kakocho.ageAtDeath, keyword) ||
        this.includesKeyword(kakocho.note, keyword)
      );
    }

    this.setSearchResults(dankaResults, familyResults, kakochoResults, requestId);
  }

  clearSearch(): void {
    if (this.searchTimer) {
      clearTimeout(this.searchTimer);
    }

    this.searchRequestId++;
    this.searchKeyword = '';
    this.selectedSearchType = 'all';
    this.dankaResults = [];
    this.familyResults = [];
    this.kakochoResults = [];
    this.totalResultCount = 0;
    this.cdr.detectChanges();
  }

  private includesKeyword(value: unknown, keyword: string): boolean {
    return String(value ?? '').includes(keyword);
  }

  private getPhones(danka: Danka) {
    return Array.isArray(danka.phones) ? danka.phones : [];
  }

  private setSearchResults(
    dankaResults: Danka[],
    familyResults: Family[],
    kakochoResults: Kakocho[],
    requestId: number,
  ): void {
    if (requestId !== this.searchRequestId) {
      return;
    }

    this.dankaResults = dankaResults;
    this.familyResults = familyResults;
    this.kakochoResults = kakochoResults;
    this.totalResultCount =
      dankaResults.length +
      familyResults.length +
      kakochoResults.length;
    this.cdr.detectChanges();
  }
}