import { ChangeDetectorRef, Component, EventEmitter, Input, OnInit } from '@angular/core';
import { ToastrService } from 'ngx-toastr';
import { Bu6Model, MyBu6Model } from 'src/app/shared/model/bu6.model';
import { Bu7Model, MyBu7Model } from 'src/app/shared/model/bu7.model';
import { Bu6Service } from 'src/app/shared/services/bu6.service';
import { Bu7Service } from 'src/app/shared/services/bu7.service';
import { FileService } from 'src/app/shared/services/file.service';

interface table {
  currentPage: number,
  page: number[],
  search: string
}
@Component({
  selector: 'app-sub-department-four',
  templateUrl: './sub-department-four.component.html',
  styleUrls: ['./sub-department-four.component.scss']
})
export class SubDepartmentFourComponent implements OnInit {
  bu7List: { check: boolean, data: Bu7Model }[] = []
  bu7ListLoading = false
  bu7: Bu7Model = new MyBu7Model()
  bu7Table: table = {
    currentPage: 1,
    page: Array.from({ length: 1 }, (_, i) => i + 1),
    search: ""
  }

  selectedFile: File | null = null;
  selectedFileName: string = 'กรุณาเลือกไฟล์';

  bu7Modal: table = {
    currentPage: 1,
    page: Array.from({ length: 1 }, (_, i) => i + 1),
    search: ""
  }
  bu6List: Bu6Model[] = []
  bu6: Bu6Model = new MyBu6Model()
  bu6Modal: table = {
    currentPage: 1,
    page: Array.from({ length: 1 }, (_, i) => i + 1),
    search: ""
  }
  currentModal: 'add' | 'edit' | 'delete' = "add"

  numDataListChecked = 0
  isDataListChecked = false
  isDataListCheckedAll = false
  constructor(private bu7Service: Bu7Service,
    private bu6Service: Bu6Service,
    private toastr: ToastrService,
    private cdr: ChangeDetectorRef,
    private fileService: FileService
  ) { }
  ngOnInit(): void {
    this.getBu7List()
    this.getBu6List()
  }

  onFileSelected(event: any) {
    this.selectedFile = event.target.files.length > 0 ? event.target.files[0] : null;
    this.selectedFileName = this.selectedFile?.name || "กรุณาเลือกไฟล์"
  }

  uploadFile() {
    if (!this.selectedFile) {
      alert('กรุณาเลือกไฟล์ก่อนอัปโหลด')
      return
    }
    const formData = new FormData();
    formData.append('file', this.selectedFile);
    this.bu7ListLoading = true
    this.fileService.uploadExcel(formData, 'mbu7').subscribe({
      next: response => {
        if (response.success) {
          this.showAlert(response.message, 'success')
          this.getBu7List()
        } else {
          this.showAlert(response.message, 'error')
          this.bu7ListLoading = false
        }
      }, error: error => {
        this.showAlert(error.message, 'error')
        this.bu7ListLoading = false
      }
    })
  }

  downloadFile() {
    const fileName = 'IMPORT_BU.xlsx'
    this.fileService.downloadTemplate(fileName).subscribe({
      next: response => {
        const url = window.URL.createObjectURL(response);
        const a = document.createElement("a");
        a.href = url;
        a.download = fileName;
        document.body.appendChild(a);
        a.click();
        document.body.removeChild(a);
        window.URL.revokeObjectURL(url);
      }, error: error => {
        this.showAlert(error.message, 'error')
      }
    })

  }

  getBu7List() {
    this.bu7ListLoading = true
    this.bu7Service.getList().subscribe({
      next: response => {
        this.bu7List = response.map(x => ({ check: false, data: new MyBu7Model(x) }))
        this.bu7ListLoading = false
        this.onBu7TableSearchChange()
        this.isDataListCheckedAll = false
        this.dataListCheckAll()
        this.cdr.detectChanges()
      }, error: error => {
        this.bu7ListLoading = false
        this.cdr.detectChanges()
      }
    })
  }
  onBu7TableSearchChange() {
    this.bu7Table.currentPage = 1
    this.bu7Table.page = Array.from({ length: Math.ceil(this.filterBu7Table().length / 10) }, (_, i) => i + 1);
    this.dataListCheck()
  }
  filterBu7Table() {
    return this.bu7List.filter(x => {
      const data = x.data
      return data.bu7id.toLowerCase().includes(this.bu7Table.search.toLowerCase()) ||
        data.tdesc.toLowerCase().includes(this.bu7Table.search.toLowerCase()) ||
        data.edesc.toLowerCase().includes(this.bu7Table.search.toLowerCase())
    })
  }
  selectBu7(bu7?: Bu7Model) {
    this.bu7 = new MyBu7Model(bu7 || {})
    this.selectBu6()
    if (this.bu7.parent) {
      this.bu6Service.getById(this.bu7.parent).subscribe(response => {
        this.bu6 = new MyBu6Model(response)
        this.cdr.detectChanges()
      })
    }
  }
  onBu7ModalSearchChange() {
    this.bu7Modal.currentPage = 1
    this.bu7Modal.page = Array.from({ length: Math.ceil(this.filterBu7Modal().length / 10) }, (_, i) => i + 1);
  }
  filterBu7Modal() {
    return this.bu7List.filter(x => {
      const data = x.data
      return data.bu7id.toLowerCase().includes(this.bu7Table.search.toLowerCase()) ||
        data.tdesc.toLowerCase().includes(this.bu7Table.search.toLowerCase()) ||
        data.edesc.toLowerCase().includes(this.bu7Table.search.toLowerCase())
    })
  }
  addBu7() {
    this.bu7ListLoading = true
    this.bu7Service.post({ ...this.bu7, parent: this.bu6.bu6id }).subscribe({
      next: response => {
        if (response.success) {
          this.showAlert(response.message, 'success')
          this.getBu7List()
        } else {
          this.showAlert(response.message, 'error')
          this.bu7ListLoading = false
        }
      }, error: error => {
        this.showAlert(error.message, 'error')
        this.bu7ListLoading = false
      }
    })
  }
  deleteBu7() {
    this.bu7ListLoading = true
    const body = this.bu7List.filter(x => x.check).map(x => new MyBu7Model(x.data))
    this.bu7Service.delete(body).subscribe({
      next: response => {
        if (response.success) {
          this.showAlert(response.message, 'success')
          this.getBu7List()
        } else {
          this.showAlert(response.message, 'error')
          this.bu7ListLoading = false
        }
      }, error: error => {
        this.showAlert(error.message, 'error')
        this.bu7ListLoading = false
      }
    })
  }

  getBu6List() {
    this.bu6Service.getList().subscribe(response => {
      this.bu6List = response.map(x => new MyBu6Model(x))
      this.onBu6ModalSearchChange()
    })
  }
  onBu6ModalSearchChange() {
    this.bu6Modal.currentPage = 1
    this.bu6Modal.page = Array.from({ length: Math.ceil(this.filterBu6Modal().length / 10) }, (_, i) => i + 1);
  }
  bu6idChange() {
    const bu6 = this.bu6List.find(x => x.bu6id == this.bu6.bu6id)
    this.selectBu6(bu6 || new MyBu6Model({ bu6id: this.bu6.bu6id }))
  }
  filterBu6Modal() {
    return this.bu6List.filter(x => x.bu6id.toLowerCase().includes(this.bu6Modal.search.toLowerCase()) ||
      x.tdesc.toLowerCase().includes(this.bu6Modal.search.toLowerCase()) ||
      x.edesc.toLowerCase().includes(this.bu6Modal.search.toLowerCase()))
  }
  selectBu6(bu6?: Bu6Model) {
    this.bu6 = new MyBu6Model(bu6 || {})
  }

  showAlert(text: string, type: 'success' | 'error') {
    this.toastr[type](text, 'แจ้งเตือน', {
      timeOut: 3000,
      positionClass: 'toast-top-right',
    })
  }

  dataListCheckAll() {
    const selectAll = this.isDataListCheckedAll;
    this.filterBu7Table().forEach(x => x.check = selectAll);
    this.dataListCheck();
  }

  dataListCheck() {
    const dataCheck = this.filterBu7Table();
    this.isDataListCheckedAll = dataCheck.length ? dataCheck.every(x => x.check) : false;
    this.numDataListChecked = this.bu7List.filter(x => x.check).length
    this.isDataListChecked = Boolean(this.numDataListChecked)
  }
}