import { Component, OnInit } from '@angular/core';
import { TransactionLogService } from '../shared/services/transaction-log.service';
import { CommonModule } from '@angular/common';
import { TranslateModule } from '@ngx-translate/core';
import { ExcelExportService } from '../shared/services/excel-export.service';
import { TRANSACTION_LOGS_FILE_NAME } from '../utils/app.constants';
import { pageSizeOptions } from '../utils/app.constants';
import { NgSelectModule } from '@ng-select/ng-select';
import { FormsModule, ReactiveFormsModule } from '@angular/forms';
import { TransactionLogFilterPipe } from '../shared/pipes/transactionLogFilter.pipe';
import {TransactionLog} from "../models/user"

@Component({
  selector: 'app-transaction-logs',
  templateUrl: './transaction-logs.component.html',
  providers: [TransactionLogService],
  imports: [CommonModule, TranslateModule, NgSelectModule, FormsModule, ReactiveFormsModule, TransactionLogFilterPipe, ]
})
export class TransactionLogsComponent implements OnInit {
  currentPage: number = 1;
  totalCount: number = 0;
  renewalDataExpanded: boolean = true;
  pageSizeOptions = pageSizeOptions;
  itemsPerPage: number = 5;
  logs: TransactionLog[] = [];
  isLoading = false;
  errorMessage: string = '';
  searchText: string = '';

  constructor(
    private transactionLogService: TransactionLogService,
    private excelExportService: ExcelExportService
  ) {}

  get logs$(){
    return this.transactionLogService.logs$;
  }
  ngOnInit(): void {
    this.transactionLogService.loadLogs();

    this.transactionLogService.logs$.subscribe((logs: TransactionLog[]) => {
      this.logs = logs;
    });

    this.transactionLogService.currentPage$.subscribe((page) => {
      this.currentPage = page;
    });

    this.transactionLogService.totalCount$.subscribe((count) => {
      this.totalCount = count;
    });

    this.transactionLogService.itemsPerPage$.subscribe((size) => {
      this.itemsPerPage = size;
    });    
  }

  onSearch(value: string): void {
  this.searchText = value;
}

  get paginatedLogs(): TransactionLog[] {
    const start = (this.currentPage - 1) * this.itemsPerPage;
    const end = start + this.itemsPerPage;
    return this.logs.slice(start, end);
  }

  exportDataInExcel(){
    this.excelExportService.exportExcel(this.logs, TRANSACTION_LOGS_FILE_NAME)
  }
  getTotalPages(): number {
    return this.transactionLogService.getTotalPages();
  }
  onPageSizeChange(pageSize: number): void {
    this.transactionLogService.setItemsPerPage(pageSize);
  }

  nextPage(): void {
    this.transactionLogService.nextPage();
  }

  previousPage(): void {
    this.transactionLogService.previousPage();
  }

}