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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;
begin: number = 0;
step: number = 10;
existingFlag: boolean = false;
@Input() dataset: Dataset; //dodaj ! potencijalno
@Output() editEvent = new EventEmitter();
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?
resetPagging() {
this.begin = 0;
}
goBack() {
if (this.begin - 10 < 0)
this.begin = 0;
else {
this.begin -= 10;
this.loadExisting();
}
}
goForward() {
this.begin += 10;
if (this.dataset.rowCount < this.begin)
this.begin -= 10;
else
this.loadExisting();
}
clear() {
this.tableData.hasInput = false;
}
getPage() {
return Math.ceil(this.dataset.rowCount / 10)
}
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.existingFlag = false;
this.update();
}
firstInput = false;
update() {
this.firstInput = true;
if (this.files.length < 1) {
this.loadExisting();
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)
this.csvRecords = result.splice(0, 11);
this.colsNumber = result[0].length;
this.rowsNumber = result.length;
this.tableData.data = this.csvRecords;
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);
}
loadExisting() {
this.existingFlag = true;
this.firstInput = false;
this.tableData.hasInput = true;
this.tableData.loaded = false;
this.datasetsService.getDatasetHeader(this.dataset.fileId).subscribe((header: string | undefined) => {
this.datasetsService.getDatasetFilePaging(this.dataset.fileId, this.begin, this.step).subscribe((file: string | undefined) => {
if (file) {
this.tableData.loaded = true;
this.tableData.numRows = this.dataset.rowCount;
this.tableData.numCols = this.dataset.columnInfo.length;
this.tableData.data = this.csv.csvToArray(header + '\n' + file, (this.dataset.delimiter == "razmak") ? " " : (this.dataset.delimiter == "novi red") ? "\t" : this.dataset.delimiter);
}
else {
this.begin -= 10;
this.loadExisting();
}
});
});
}
/*exportAsXLSX():void {
this.excelService.exportAsExcelFile(this.data, 'sample');
}*/
checkAccessible() {
if (this.dataset.isPublic)
this.dataset.accessibleByLink = true;
}
uploadDataset(onSuccess: Function = (dataset: Dataset) => { }, onError: Function = () => { }) {
if (this.files[0] == undefined) {
shared.openDialog("Greška", "Niste izabrali fajl za učitavanje.");
return;
}
return this.datasetsService.uploadData(this.files[0]).subscribe((file) => {
this.dataset._id = "";
this.dataset.fileId = file._id;
this.dataset.uploaderId = shared.userId;
this.datasetsService.addDataset(this.dataset).subscribe((dataset) => {
onSuccess();
}, (error) => {
onError();
}); //kraj addDataset subscribe
}, (error) => {
onError();
}); //kraj uploadData subscribe
}
}
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