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import { Component, ElementRef, EventEmitter, Input, Output, ViewChild } from '@angular/core';
import Dataset from 'src/app/_data/Dataset';
import { DatasetsService } from 'src/app/_services/datasets.service';
import { ModelsService } from 'src/app/_services/models.service';
import shared from 'src/app/Shared';
import { DatatableComponent, TableData } from '../datatable/datatable.component';
import { CsvParseService } from 'src/app/_services/csv-parse.service';
import {FormControl, Validators} from '@angular/forms';
@Component({
selector: 'app-form-dataset',
templateUrl: './form-dataset.component.html',
styleUrls: ['./form-dataset.component.css']
})
export class FormDatasetComponent {
@ViewChild(DatatableComponent) datatable!: DatatableComponent;
nameFormControl = new FormControl('', [Validators.required, Validators.email]);
delimiterOptions: Array<string> = [",", ";", "|", "razmak", "novi red"]; //podrazumevano ","
csvRecords: any[] = [];
files: File[] = [];
rowsNumber: number = 0;
colsNumber: number = 0;
@Input() dataset: Dataset; //dodaj ! potencijalno
tableData: TableData = new TableData();
@ViewChild('fileInput') fileInput! : ElementRef
filename: String;
constructor(private modelsService: ModelsService, private datasetsService: DatasetsService, private csv: CsvParseService) {
this.dataset = new Dataset();
this.dataset.delimiter = ',';
this.filename = "";
}
//@ViewChild('fileImportInput', { static: false }) fileImportInput: any; cemu je ovo sluzilo?
changeListener($event: any): void {
this.files = $event.srcElement.files;
if (this.files.length == 0 || this.files[0] == null) {
this.tableData.hasInput = false;
return;
}
else
this.tableData.hasInput = true;
this.filename = this.files[0].name;
this.tableData.loaded = false;
this.update();
}
update() {
if (this.files.length < 1)
return;
const fileReader = new FileReader();
fileReader.onload = (e) => {
if (typeof fileReader.result === 'string') {
const result = this.csv.csvToArray(fileReader.result, (this.dataset.delimiter == "razmak") ? " " : (this.dataset.delimiter == "novi red") ? "\t" : this.dataset.delimiter)
if (this.dataset.hasHeader)
this.csvRecords = result.splice(0, 11);
else
this.csvRecords = result.splice(0, 10);
this.colsNumber = result[0].length;
this.rowsNumber = result.length;
this.tableData.data = this.csvRecords
this.tableData.hasHeader = this.dataset.hasHeader;
this.tableData.loaded = true;
this.tableData.numCols = this.colsNumber;
this.tableData.numRows = this.rowsNumber;
}
}
fileReader.readAsText(this.files[0]);
this.dataset.name = this.filename.slice(0, this.filename.length - 4);
}
checkAccessible() {
if (this.dataset.isPublic)
this.dataset.accessibleByLink = true;
}
uploadDataset() {
if (this.files[0] == undefined) {
shared.openDialog("Greška", "Niste izabrali fajl za učitavanje.");
return;
}
this.modelsService.uploadData(this.files[0]).subscribe((file) => {
//console.log('ADD MODEL: STEP 2 - ADD DATASET WITH FILE ID ' + file._id);
this.dataset._id = "";
this.dataset.fileId = file._id;
this.dataset.uploaderId = shared.userId;
this.datasetsService.addDataset(this.dataset).subscribe((dataset) => {
shared.openDialog("Obaveštenje", "Uspešno ste dodali novi izvor podataka u kolekciju. Molimo sačekajte par trenutaka da se procesira.");
}, (error) => {
shared.openDialog("Neuspeo pokušaj!", "Izvor podataka sa unetim nazivom već postoji u Vašoj kolekciji. Izmenite naziv ili iskoristite postojeći dataset.");
}); //kraj addDataset subscribe
}, (error) => {
}); //kraj uploadData subscribe
}
}
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